[llvm] r368657 - [SimplifyLibCalls] Add dereferenceable bytes from known callsites
Dávid Bolvanský via llvm-commits
llvm-commits at lists.llvm.org
Tue Aug 13 09:24:19 PDT 2019
But probably I will fix it using your suggestion - we dont need nonnull to get defer(40).
Dňa 13. 8. 2019 o 18:21 užívateľ Dávid Bolvanský <david.bolvansky at gmail.com> napísal:
> D53342 *
>
> Odoslané z iPhonu
>
> Dňa 13. 8. 2019 o 18:20 užívateľ Dávid Bolvanský <david.bolvansky at gmail.com> napísal:
>
>> Do you mean deref_or_null(40) -> deref(16)?
>> Yes, I was thinking about it but it will be solved soon (after I land noalias annotation patch, I can work on D52242 again since tommorow) in “nonnull” annotation patch. I think it will solve this problem..
>>
>> deref_or_null(40) + infered nonnull => deref(40).
>>
>> Or you mean something else?
>>
>> Odoslané z iPhonu
>>
>> Dňa 13. 8. 2019 o 18:14 užívateľ Philip Reames <listmail at philipreames.com> napísal:
>>
>>> In rare cases, it looks like this could loose information. I think what you actually want would be the max of the original deref information, and the length.
>>>
>>> Philip
>>>
>>>> On 8/13/19 2:11 AM, David Bolvansky via llvm-commits wrote:
>>>> Author: xbolva00
>>>> Date: Tue Aug 13 02:11:49 2019
>>>> New Revision: 368657
>>>>
>>>> URL: http://llvm.org/viewvc/llvm-project?rev=368657&view=rev
>>>> Log:
>>>> [SimplifyLibCalls] Add dereferenceable bytes from known callsites
>>>>
>>>> Summary:
>>>> int mm(char *a, char *b) {
>>>> return memcmp(a,b,16);
>>>> }
>>>>
>>>> Currently:
>>>> define dso_local i32 @mm(i8* nocapture readonly %a, i8* nocapture readonly %b) local_unnamed_addr #1 {
>>>> entry:
>>>> %call = tail call i32 @memcmp(i8* %a, i8* %b, i64 16)
>>>> ret i32 %call
>>>> }
>>>>
>>>> After patch:
>>>> define dso_local i32 @mm(i8* nocapture readonly %a, i8* nocapture readonly %b) local_unnamed_addr #1 {
>>>> entry:
>>>> %call = tail call i32 @memcmp(i8* dereferenceable(16) %a, i8* dereferenceable(16) %b, i64 16)
>>>> ret i32 %call
>>>> }
>>>>
>>>>
>>>>
>>>>
>>>> Reviewers: jdoerfert, efriedma
>>>>
>>>> Reviewed By: jdoerfert
>>>>
>>>> Subscribers: javed.absar, spatel, llvm-commits
>>>>
>>>> Tags: #llvm
>>>>
>>>> Differential Revision: https://reviews.llvm.org/D66079
>>>>
>>>> Added:
>>>> llvm/trunk/test/Transforms/InstCombine/mem-deref-bytes.ll
>>>> Modified:
>>>> llvm/trunk/include/llvm/Transforms/Utils/SimplifyLibCalls.h
>>>> llvm/trunk/lib/Transforms/Utils/SimplifyLibCalls.cpp
>>>> llvm/trunk/test/Analysis/TypeBasedAliasAnalysis/memcpyopt.ll
>>>> llvm/trunk/test/Transforms/InstCombine/ARM/strcmp.ll
>>>> llvm/trunk/test/Transforms/InstCombine/align-addr.ll
>>>> llvm/trunk/test/Transforms/InstCombine/memchr.ll
>>>> llvm/trunk/test/Transforms/InstCombine/memcmp-constant-fold.ll
>>>> llvm/trunk/test/Transforms/InstCombine/memcpy-from-global.ll
>>>> llvm/trunk/test/Transforms/InstCombine/memcpy-to-load.ll
>>>> llvm/trunk/test/Transforms/InstCombine/memcpy.ll
>>>> llvm/trunk/test/Transforms/InstCombine/memcpy_chk-1.ll
>>>> llvm/trunk/test/Transforms/InstCombine/memmove_chk-1.ll
>>>> llvm/trunk/test/Transforms/InstCombine/memset_chk-1.ll
>>>> llvm/trunk/test/Transforms/InstCombine/objsize.ll
>>>> llvm/trunk/test/Transforms/InstCombine/sprintf-1.ll
>>>> llvm/trunk/test/Transforms/InstCombine/stpcpy_chk-1.ll
>>>> llvm/trunk/test/Transforms/InstCombine/strcmp-1.ll
>>>> llvm/trunk/test/Transforms/InstCombine/strcmp-memcmp.ll
>>>> llvm/trunk/test/Transforms/InstCombine/strcpy_chk-1.ll
>>>> llvm/trunk/test/Transforms/InstCombine/strncpy_chk-1.ll
>>>> llvm/trunk/test/Transforms/MemCpyOpt/memcpy-to-memset-with-lifetimes.ll
>>>>
>>>> Modified: llvm/trunk/include/llvm/Transforms/Utils/SimplifyLibCalls.h
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Transforms/Utils/SimplifyLibCalls.h?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/include/llvm/Transforms/Utils/SimplifyLibCalls.h (original)
>>>> +++ llvm/trunk/include/llvm/Transforms/Utils/SimplifyLibCalls.h Tue Aug 13 02:11:49 2019
>>>> @@ -167,9 +167,9 @@ private:
>>>> Value *optimizeMemCmp(CallInst *CI, IRBuilder<> &B);
>>>> Value *optimizeBCmp(CallInst *CI, IRBuilder<> &B);
>>>> Value *optimizeMemCmpBCmpCommon(CallInst *CI, IRBuilder<> &B);
>>>> - Value *optimizeMemCpy(CallInst *CI, IRBuilder<> &B);
>>>> - Value *optimizeMemMove(CallInst *CI, IRBuilder<> &B);
>>>> - Value *optimizeMemSet(CallInst *CI, IRBuilder<> &B);
>>>> + Value *optimizeMemCpy(CallInst *CI, IRBuilder<> &B, bool isIntrinsic = false);
>>>> + Value *optimizeMemMove(CallInst *CI, IRBuilder<> &B, bool isIntrinsic = false);
>>>> + Value *optimizeMemSet(CallInst *CI, IRBuilder<> &B, bool isIntrinsic = false);
>>>> Value *optimizeRealloc(CallInst *CI, IRBuilder<> &B);
>>>> Value *optimizeWcslen(CallInst *CI, IRBuilder<> &B);
>>>> // Wrapper for all String/Memory Library Call Optimizations
>>>>
>>>> Modified: llvm/trunk/lib/Transforms/Utils/SimplifyLibCalls.cpp
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Utils/SimplifyLibCalls.cpp?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/lib/Transforms/Utils/SimplifyLibCalls.cpp (original)
>>>> +++ llvm/trunk/lib/Transforms/Utils/SimplifyLibCalls.cpp Tue Aug 13 02:11:49 2019
>>>> @@ -186,6 +186,20 @@ static bool canTransformToMemCmp(CallIns
>>>> return true;
>>>> }
>>>> +static void annotateDereferenceableBytes(CallInst *CI,
>>>> + ArrayRef<unsigned> ArgNos,
>>>> + uint64_t DerefBytes) {
>>>> + for (unsigned ArgNo : ArgNos) {
>>>> + if (CI->getDereferenceableBytes(ArgNo + AttributeList::FirstArgIndex) <
>>>> + DerefBytes) {
>>>> + CI->removeParamAttr(ArgNo, Attribute::Dereferenceable);
>>>> + CI->removeParamAttr(ArgNo, Attribute::DereferenceableOrNull);
>>>> + CI->addParamAttr(ArgNo, Attribute::getWithDereferenceableBytes(
>>>> + CI->getContext(), DerefBytes));
>>>> + }
>>>> + }
>>>> +}
>>>> +
>>>> //===----------------------------------------------------------------------===//
>>>> // String and Memory Library Call Optimizations
>>>> //===----------------------------------------------------------------------===//
>>>> @@ -765,9 +779,11 @@ Value *LibCallSimplifier::optimizeMemChr
>>>> ConstantInt *LenC = dyn_cast<ConstantInt>(CI->getArgOperand(2));
>>>> // memchr(x, y, 0) -> null
>>>> - if (LenC && LenC->isZero())
>>>> - return Constant::getNullValue(CI->getType());
>>>> -
>>>> + if (LenC) {
>>>> + if (LenC->isZero())
>>>> + return Constant::getNullValue(CI->getType());
>>>> + annotateDereferenceableBytes(CI, {0}, LenC->getZExtValue());
>>>> + }
>>>> // From now on we need at least constant length and string.
>>>> StringRef Str;
>>>> if (!LenC || !getConstantStringInfo(SrcStr, Str, 0, /*TrimAtNul=*/false))
>>>> @@ -926,10 +942,12 @@ Value *LibCallSimplifier::optimizeMemCmp
>>>> return Constant::getNullValue(CI->getType());
>>>> // Handle constant lengths.
>>>> - if (ConstantInt *LenC = dyn_cast<ConstantInt>(Size))
>>>> + if (ConstantInt *LenC = dyn_cast<ConstantInt>(Size)) {
>>>> if (Value *Res = optimizeMemCmpConstantSize(CI, LHS, RHS,
>>>> LenC->getZExtValue(), B, DL))
>>>> return Res;
>>>> + annotateDereferenceableBytes(CI, {0, 1}, LenC->getZExtValue());
>>>> + }
>>>> return nullptr;
>>>> }
>>>> @@ -955,18 +973,31 @@ Value *LibCallSimplifier::optimizeBCmp(C
>>>> return optimizeMemCmpBCmpCommon(CI, B);
>>>> }
>>>> -Value *LibCallSimplifier::optimizeMemCpy(CallInst *CI, IRBuilder<> &B) {
>>>> +Value *LibCallSimplifier::optimizeMemCpy(CallInst *CI, IRBuilder<> &B,
>>>> + bool isIntrinsic) {
>>>> + Value *Size = CI->getArgOperand(2);
>>>> + if (ConstantInt *LenC = dyn_cast<ConstantInt>(Size))
>>>> + annotateDereferenceableBytes(CI, {0, 1}, LenC->getZExtValue());
>>>> +
>>>> + if (isIntrinsic)
>>>> + return nullptr;
>>>> +
>>>> // memcpy(x, y, n) -> llvm.memcpy(align 1 x, align 1 y, n)
>>>> - B.CreateMemCpy(CI->getArgOperand(0), 1, CI->getArgOperand(1), 1,
>>>> - CI->getArgOperand(2));
>>>> + B.CreateMemCpy(CI->getArgOperand(0), 1, CI->getArgOperand(1), 1, Size);
>>>> return CI->getArgOperand(0);
>>>> }
>>>> -Value *LibCallSimplifier::optimizeMemMove(CallInst *CI, IRBuilder<> &B) {
>>>> +Value *LibCallSimplifier::optimizeMemMove(CallInst *CI, IRBuilder<> &B, bool isIntrinsic) {
>>>> + Value *Size = CI->getArgOperand(2);
>>>> + if (ConstantInt *LenC = dyn_cast<ConstantInt>(Size))
>>>> + annotateDereferenceableBytes(CI, {0, 1}, LenC->getZExtValue());
>>>> +
>>>> + if (isIntrinsic)
>>>> + return nullptr;
>>>> +
>>>> // memmove(x, y, n) -> llvm.memmove(align 1 x, align 1 y, n)
>>>> - B.CreateMemMove(CI->getArgOperand(0), 1, CI->getArgOperand(1), 1,
>>>> - CI->getArgOperand(2));
>>>> - return CI->getArgOperand(0);
>>>> + B.CreateMemMove( CI->getArgOperand(0), 1, CI->getArgOperand(1), 1, Size);
>>>> + return CI->getArgOperand(0);
>>>> }
>>>> /// Fold memset[_chk](malloc(n), 0, n) --> calloc(1, n).
>>>> @@ -1015,13 +1046,21 @@ Value *LibCallSimplifier::foldMallocMems
>>>> return Calloc;
>>>> }
>>>> -Value *LibCallSimplifier::optimizeMemSet(CallInst *CI, IRBuilder<> &B) {
>>>> +Value *LibCallSimplifier::optimizeMemSet(CallInst *CI, IRBuilder<> &B,
>>>> + bool isIntrinsic) {
>>>> + Value *Size = CI->getArgOperand(2);
>>>> + if (ConstantInt *LenC = dyn_cast<ConstantInt>(Size))
>>>> + annotateDereferenceableBytes(CI, {0}, LenC->getZExtValue());
>>>> +
>>>> + if (isIntrinsic)
>>>> + return nullptr;
>>>> +
>>>> if (auto *Calloc = foldMallocMemset(CI, B))
>>>> return Calloc;
>>>> // memset(p, v, n) -> llvm.memset(align 1 p, v, n)
>>>> Value *Val = B.CreateIntCast(CI->getArgOperand(1), B.getInt8Ty(), false);
>>>> - B.CreateMemSet(CI->getArgOperand(0), Val, CI->getArgOperand(2), 1);
>>>> + B.CreateMemSet(CI->getArgOperand(0), Val, Size, 1);
>>>> return CI->getArgOperand(0);
>>>> }
>>>> @@ -2710,6 +2749,12 @@ Value *LibCallSimplifier::optimizeCall(C
>>>> case Intrinsic::sqrt:
>>>> return optimizeSqrt(CI, Builder);
>>>> // TODO: Use foldMallocMemset() with memset intrinsic.
>>>> + case Intrinsic::memset:
>>>> + return optimizeMemSet(CI, Builder, true);
>>>> + case Intrinsic::memcpy:
>>>> + return optimizeMemCpy(CI, Builder, true);
>>>> + case Intrinsic::memmove:
>>>> + return optimizeMemMove(CI, Builder, true);
>>>> default:
>>>> return nullptr;
>>>> }
>>>>
>>>> Modified: llvm/trunk/test/Analysis/TypeBasedAliasAnalysis/memcpyopt.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/TypeBasedAliasAnalysis/memcpyopt.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Analysis/TypeBasedAliasAnalysis/memcpyopt.ll (original)
>>>> +++ llvm/trunk/test/Analysis/TypeBasedAliasAnalysis/memcpyopt.ll Tue Aug 13 02:11:49 2019
>>>> @@ -6,7 +6,7 @@ target datalayout = "e-p:64:64:64"
>>>> ; it has a TBAA tag which declares that it is unrelated.
>>>> ; CHECK: @foo
>>>> -; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 %p, i8* align 1 %q, i64 16, i1 false), !tbaa !0
>>>> +; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 dereferenceable(16) %p, i8* align 1 dereferenceable(16) %q, i64 16, i1 false), !tbaa !0
>>>> ; CHECK-NEXT: store i8 2, i8* %s, align 1, !tbaa [[TAGA:!.*]]
>>>> ; CHECK-NEXT: ret void
>>>> define void @foo(i8* nocapture %p, i8* nocapture %q, i8* nocapture %s) nounwind {
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/ARM/strcmp.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/ARM/strcmp.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/ARM/strcmp.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/ARM/strcmp.ll Tue Aug 13 02:11:49 2019
>>>> @@ -1,3 +1,4 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> ; Test that the strcmp library call simplifier works correctly.
>>>> ; RUN: opt < %s -instcombine -S | FileCheck %s
>>>> @@ -13,10 +14,11 @@ declare i32 @strcmp(i8*, i8*)
>>>> ; strcmp("", x) -> -*x
>>>> define arm_aapcscc i32 @test1(i8* %str2) {
>>>> ; CHECK-LABEL: @test1(
>>>> -; CHECK: %strcmpload = load i8, i8* %str
>>>> -; CHECK: %1 = zext i8 %strcmpload to i32
>>>> -; CHECK: %2 = sub nsw i32 0, %1
>>>> -; CHECK: ret i32 %2
>>>> +; CHECK-NEXT: [[STRCMPLOAD:%.*]] = load i8, i8* [[STR2:%.*]], align 1
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[STRCMPLOAD]] to i32
>>>> +; CHECK-NEXT: [[TMP2:%.*]] = sub nsw i32 0, [[TMP1]]
>>>> +; CHECK-NEXT: ret i32 [[TMP2]]
>>>> +;
>>>> %str1 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
>>>> %temp1 = call arm_apcscc i32 @strcmp(i8* %str1, i8* %str2)
>>>> @@ -27,9 +29,10 @@ define arm_aapcscc i32 @test1(i8* %str2)
>>>> ; strcmp(x, "") -> *x
>>>> define arm_aapcscc i32 @test2(i8* %str1) {
>>>> ; CHECK-LABEL: @test2(
>>>> -; CHECK: %strcmpload = load i8, i8* %str
>>>> -; CHECK: %1 = zext i8 %strcmpload to i32
>>>> -; CHECK: ret i32 %1
>>>> +; CHECK-NEXT: [[STRCMPLOAD:%.*]] = load i8, i8* [[STR1:%.*]], align 1
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[STRCMPLOAD]] to i32
>>>> +; CHECK-NEXT: ret i32 [[TMP1]]
>>>> +;
>>>> %str2 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
>>>> %temp1 = call arm_aapcscc i32 @strcmp(i8* %str1, i8* %str2)
>>>> @@ -39,7 +42,8 @@ define arm_aapcscc i32 @test2(i8* %str1)
>>>> ; strcmp(x, y) -> cnst
>>>> define arm_aapcscc i32 @test3() {
>>>> ; CHECK-LABEL: @test3(
>>>> -; CHECK: ret i32 -1
>>>> +; CHECK-NEXT: ret i32 -1
>>>> +;
>>>> %str1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
>>>> %str2 = getelementptr inbounds [6 x i8], [6 x i8]* @hello, i32 0, i32 0
>>>> @@ -49,7 +53,8 @@ define arm_aapcscc i32 @test3() {
>>>> define arm_aapcscc i32 @test4() {
>>>> ; CHECK-LABEL: @test4(
>>>> -; CHECK: ret i32 1
>>>> +; CHECK-NEXT: ret i32 1
>>>> +;
>>>> %str1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
>>>> %str2 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
>>>> @@ -61,8 +66,10 @@ define arm_aapcscc i32 @test4() {
>>>> ; (This transform is rather difficult to trigger in a useful manner)
>>>> define arm_aapcscc i32 @test5(i1 %b) {
>>>> ; CHECK-LABEL: @test5(
>>>> -; CHECK: %memcmp = call i32 @memcmp(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i32 0, i32 0), i8* %str2, i32 5)
>>>> -; CHECK: ret i32 %memcmp
>>>> +; CHECK-NEXT: [[STR2:%.*]] = select i1 [[B:%.*]], i8* getelementptr inbounds ([5 x i8], [5 x i8]* @hell, i32 0, i32 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @bell, i32 0, i32 0)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(5) getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i32 0, i32 0), i8* dereferenceable(5) [[STR2]], i32 5)
>>>> +; CHECK-NEXT: ret i32 [[MEMCMP]]
>>>> +;
>>>> %str1 = getelementptr inbounds [6 x i8], [6 x i8]* @hello, i32 0, i32 0
>>>> %temp1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
>>>> @@ -75,7 +82,8 @@ define arm_aapcscc i32 @test5(i1 %b) {
>>>> ; strcmp(x,x) -> 0
>>>> define arm_aapcscc i32 @test6(i8* %str) {
>>>> ; CHECK-LABEL: @test6(
>>>> -; CHECK: ret i32 0
>>>> +; CHECK-NEXT: ret i32 0
>>>> +;
>>>> %temp1 = call arm_aapcscc i32 @strcmp(i8* %str, i8* %str)
>>>> ret i32 %temp1
>>>> @@ -84,10 +92,11 @@ define arm_aapcscc i32 @test6(i8* %str)
>>>> ; strcmp("", x) -> -*x
>>>> define arm_aapcs_vfpcc i32 @test1_vfp(i8* %str2) {
>>>> ; CHECK-LABEL: @test1_vfp(
>>>> -; CHECK: %strcmpload = load i8, i8* %str
>>>> -; CHECK: %1 = zext i8 %strcmpload to i32
>>>> -; CHECK: %2 = sub nsw i32 0, %1
>>>> -; CHECK: ret i32 %2
>>>> +; CHECK-NEXT: [[STRCMPLOAD:%.*]] = load i8, i8* [[STR2:%.*]], align 1
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[STRCMPLOAD]] to i32
>>>> +; CHECK-NEXT: [[TMP2:%.*]] = sub nsw i32 0, [[TMP1]]
>>>> +; CHECK-NEXT: ret i32 [[TMP2]]
>>>> +;
>>>> %str1 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
>>>> %temp1 = call arm_aapcs_vfpcc i32 @strcmp(i8* %str1, i8* %str2)
>>>> @@ -98,9 +107,10 @@ define arm_aapcs_vfpcc i32 @test1_vfp(i8
>>>> ; strcmp(x, "") -> *x
>>>> define arm_aapcs_vfpcc i32 @test2_vfp(i8* %str1) {
>>>> ; CHECK-LABEL: @test2_vfp(
>>>> -; CHECK: %strcmpload = load i8, i8* %str
>>>> -; CHECK: %1 = zext i8 %strcmpload to i32
>>>> -; CHECK: ret i32 %1
>>>> +; CHECK-NEXT: [[STRCMPLOAD:%.*]] = load i8, i8* [[STR1:%.*]], align 1
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[STRCMPLOAD]] to i32
>>>> +; CHECK-NEXT: ret i32 [[TMP1]]
>>>> +;
>>>> %str2 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
>>>> %temp1 = call arm_aapcs_vfpcc i32 @strcmp(i8* %str1, i8* %str2)
>>>> @@ -110,7 +120,8 @@ define arm_aapcs_vfpcc i32 @test2_vfp(i8
>>>> ; strcmp(x, y) -> cnst
>>>> define arm_aapcs_vfpcc i32 @test3_vfp() {
>>>> ; CHECK-LABEL: @test3_vfp(
>>>> -; CHECK: ret i32 -1
>>>> +; CHECK-NEXT: ret i32 -1
>>>> +;
>>>> %str1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
>>>> %str2 = getelementptr inbounds [6 x i8], [6 x i8]* @hello, i32 0, i32 0
>>>> @@ -120,7 +131,8 @@ define arm_aapcs_vfpcc i32 @test3_vfp()
>>>> define arm_aapcs_vfpcc i32 @test4_vfp() {
>>>> ; CHECK-LABEL: @test4_vfp(
>>>> -; CHECK: ret i32 1
>>>> +; CHECK-NEXT: ret i32 1
>>>> +;
>>>> %str1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
>>>> %str2 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
>>>> @@ -132,8 +144,10 @@ define arm_aapcs_vfpcc i32 @test4_vfp()
>>>> ; (This transform is rather difficult to trigger in a useful manner)
>>>> define arm_aapcs_vfpcc i32 @test5_vfp(i1 %b) {
>>>> ; CHECK-LABEL: @test5_vfp(
>>>> -; CHECK: %memcmp = call i32 @memcmp(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i32 0, i32 0), i8* %str2, i32 5)
>>>> -; CHECK: ret i32 %memcmp
>>>> +; CHECK-NEXT: [[STR2:%.*]] = select i1 [[B:%.*]], i8* getelementptr inbounds ([5 x i8], [5 x i8]* @hell, i32 0, i32 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @bell, i32 0, i32 0)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(5) getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i32 0, i32 0), i8* dereferenceable(5) [[STR2]], i32 5)
>>>> +; CHECK-NEXT: ret i32 [[MEMCMP]]
>>>> +;
>>>> %str1 = getelementptr inbounds [6 x i8], [6 x i8]* @hello, i32 0, i32 0
>>>> %temp1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
>>>> @@ -146,7 +160,8 @@ define arm_aapcs_vfpcc i32 @test5_vfp(i1
>>>> ; strcmp(x,x) -> 0
>>>> define arm_aapcs_vfpcc i32 @test6_vfp(i8* %str) {
>>>> ; CHECK-LABEL: @test6_vfp(
>>>> -; CHECK: ret i32 0
>>>> +; CHECK-NEXT: ret i32 0
>>>> +;
>>>> %temp1 = call arm_aapcs_vfpcc i32 @strcmp(i8* %str, i8* %str)
>>>> ret i32 %temp1
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/align-addr.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/align-addr.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/align-addr.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/align-addr.ll Tue Aug 13 02:11:49 2019
>>>> @@ -1,13 +1,33 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> ; RUN: opt < %s -instcombine -S | FileCheck %s
>>>> target datalayout = "E-p:64:64:64-p1:32:32:32-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
>>>> ; Instcombine should be able to prove vector alignment in the
>>>> ; presence of a few mild address computation tricks.
>>>> -; CHECK-LABEL: @test0(
>>>> -; CHECK: align 16
>>>> -
>>>> define void @test0(i8* %b, i64 %n, i64 %u, i64 %y) nounwind {
>>>> +; CHECK-LABEL: @test0(
>>>> +; CHECK-NEXT: entry:
>>>> +; CHECK-NEXT: [[C:%.*]] = ptrtoint i8* [[B:%.*]] to i64
>>>> +; CHECK-NEXT: [[D:%.*]] = and i64 [[C]], -16
>>>> +; CHECK-NEXT: [[E:%.*]] = inttoptr i64 [[D]] to double*
>>>> +; CHECK-NEXT: [[V:%.*]] = shl i64 [[U:%.*]], 1
>>>> +; CHECK-NEXT: [[Z:%.*]] = and i64 [[Y:%.*]], -2
>>>> +; CHECK-NEXT: [[T1421:%.*]] = icmp eq i64 [[N:%.*]], 0
>>>> +; CHECK-NEXT: br i1 [[T1421]], label [[RETURN:%.*]], label [[BB:%.*]]
>>>> +; CHECK: bb:
>>>> +; CHECK-NEXT: [[I:%.*]] = phi i64 [ [[INDVAR_NEXT:%.*]], [[BB]] ], [ 20, [[ENTRY:%.*]] ]
>>>> +; CHECK-NEXT: [[J:%.*]] = mul i64 [[I]], [[V]]
>>>> +; CHECK-NEXT: [[H:%.*]] = add i64 [[J]], [[Z]]
>>>> +; CHECK-NEXT: [[T8:%.*]] = getelementptr double, double* [[E]], i64 [[H]]
>>>> +; CHECK-NEXT: [[P:%.*]] = bitcast double* [[T8]] to <2 x double>*
>>>> +; CHECK-NEXT: store <2 x double> zeroinitializer, <2 x double>* [[P]], align 16
>>>> +; CHECK-NEXT: [[INDVAR_NEXT]] = add i64 [[I]], 1
>>>> +; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INDVAR_NEXT]], [[N]]
>>>> +; CHECK-NEXT: br i1 [[EXITCOND]], label [[RETURN]], label [[BB]]
>>>> +; CHECK: return:
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> entry:
>>>> %c = ptrtoint i8* %b to i64
>>>> %d = and i64 %c, -16
>>>> @@ -35,24 +55,26 @@ return:
>>>> ; When we see a unaligned load from an insufficiently aligned global or
>>>> ; alloca, increase the alignment of the load, turning it into an aligned load.
>>>> -; CHECK-LABEL: @test1(
>>>> -; CHECK: tmp = load
>>>> -; CHECK: GLOBAL{{.*}}align 16
>>>> -
>>>> @GLOBAL = internal global [4 x i32] zeroinitializer
>>>> define <16 x i8> @test1(<2 x i64> %x) {
>>>> +; CHECK-LABEL: @test1(
>>>> +; CHECK-NEXT: entry:
>>>> +; CHECK-NEXT: [[TMP:%.*]] = load <16 x i8>, <16 x i8>* bitcast ([4 x i32]* @GLOBAL to <16 x i8>*), align 16
>>>> +; CHECK-NEXT: ret <16 x i8> [[TMP]]
>>>> +;
>>>> entry:
>>>> - %tmp = load <16 x i8>, <16 x i8>* bitcast ([4 x i32]* @GLOBAL to <16 x i8>*), align 1
>>>> - ret <16 x i8> %tmp
>>>> + %tmp = load <16 x i8>, <16 x i8>* bitcast ([4 x i32]* @GLOBAL to <16 x i8>*), align 1
>>>> + ret <16 x i8> %tmp
>>>> }
>>>> @GLOBAL_as1 = internal addrspace(1) global [4 x i32] zeroinitializer
>>>> define <16 x i8> @test1_as1(<2 x i64> %x) {
>>>> ; CHECK-LABEL: @test1_as1(
>>>> -; CHECK: tmp = load
>>>> -; CHECK: GLOBAL_as1{{.*}}align 16
>>>> +; CHECK-NEXT: [[TMP:%.*]] = load <16 x i8>, <16 x i8> addrspace(1)* bitcast ([4 x i32] addrspace(1)* @GLOBAL_as1 to <16 x i8> addrspace(1)*), align 16
>>>> +; CHECK-NEXT: ret <16 x i8> [[TMP]]
>>>> +;
>>>> %tmp = load <16 x i8>, <16 x i8> addrspace(1)* bitcast ([4 x i32] addrspace(1)* @GLOBAL_as1 to <16 x i8> addrspace(1)*), align 1
>>>> ret <16 x i8> %tmp
>>>> }
>>>> @@ -61,8 +83,9 @@ define <16 x i8> @test1_as1(<2 x i64> %x
>>>> define <16 x i8> @test1_as1_gep(<2 x i64> %x) {
>>>> ; CHECK-LABEL: @test1_as1_gep(
>>>> -; CHECK: tmp = load
>>>> -; CHECK: GLOBAL_as1_gep{{.*}}align 16
>>>> +; CHECK-NEXT: [[TMP:%.*]] = load <16 x i8>, <16 x i8> addrspace(1)* bitcast (i32 addrspace(1)* getelementptr inbounds ([8 x i32], [8 x i32] addrspace(1)* @GLOBAL_as1_gep, i32 0, i32 4) to <16 x i8> addrspace(1)*), align 16
>>>> +; CHECK-NEXT: ret <16 x i8> [[TMP]]
>>>> +;
>>>> %tmp = load <16 x i8>, <16 x i8> addrspace(1)* bitcast (i32 addrspace(1)* getelementptr ([8 x i32], [8 x i32] addrspace(1)* @GLOBAL_as1_gep, i16 0, i16 4) to <16 x i8> addrspace(1)*), align 1
>>>> ret <16 x i8> %tmp
>>>> }
>>>> @@ -70,11 +93,12 @@ define <16 x i8> @test1_as1_gep(<2 x i64
>>>> ; When a load or store lacks an explicit alignment, add one.
>>>> -; CHECK-LABEL: @test2(
>>>> -; CHECK: load double, double* %p, align 8
>>>> -; CHECK: store double %n, double* %p, align 8
>>>> -
>>>> define double @test2(double* %p, double %n) nounwind {
>>>> +; CHECK-LABEL: @test2(
>>>> +; CHECK-NEXT: [[T:%.*]] = load double, double* [[P:%.*]], align 8
>>>> +; CHECK-NEXT: store double [[N:%.*]], double* [[P]], align 8
>>>> +; CHECK-NEXT: ret double [[T]]
>>>> +;
>>>> %t = load double, double* %p
>>>> store double %n, double* %p
>>>> ret double %t
>>>> @@ -89,9 +113,13 @@ declare void @use(i8*)
>>>> define void @test3(%struct.s* sret %a4) {
>>>> ; Check that the alignment is bumped up the alignment of the sret type.
>>>> ; CHECK-LABEL: @test3(
>>>> +; CHECK-NEXT: [[A4_CAST:%.*]] = bitcast %struct.s* [[A4:%.*]] to i8*
>>>> +; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 dereferenceable(16) [[A4_CAST]], i8 0, i64 16, i1 false)
>>>> +; CHECK-NEXT: call void @use(i8* [[A4_CAST]])
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> %a4.cast = bitcast %struct.s* %a4 to i8*
>>>> call void @llvm.memset.p0i8.i64(i8* %a4.cast, i8 0, i64 16, i1 false)
>>>> -; CHECK: call void @llvm.memset.p0i8.i64(i8* align 4 %a4.cast, i8 0, i64 16, i1 false)
>>>> call void @use(i8* %a4.cast)
>>>> ret void
>>>> }
>>>>
>>>> Added: llvm/trunk/test/Transforms/InstCombine/mem-deref-bytes.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/mem-deref-bytes.ll?rev=368657&view=auto
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/mem-deref-bytes.ll (added)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/mem-deref-bytes.ll Tue Aug 13 02:11:49 2019
>>>> @@ -0,0 +1,127 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> +; RUN: opt -instcombine -S < %s | FileCheck %s
>>>> +
>>>> +declare i32 @memcmp(i8* nocapture, i8* nocapture, i64)
>>>> +declare i8* @memcpy(i8* nocapture, i8* nocapture, i64)
>>>> +declare i8* @memmove(i8* nocapture, i8* nocapture, i64)
>>>> +declare i8* @memset(i8* nocapture, i8, i64)
>>>> +declare i8* @memchr(i8* nocapture, i32, i64)
>>>> +declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1)
>>>> +declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1)
>>>> +declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1)
>>>> +
>>>> +define i32 @memcmp_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) {
>>>> +; CHECK-LABEL: @memcmp_const_size_set_deref(
>>>> +; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(16) [[D:%.*]], i8* dereferenceable(16) [[S:%.*]], i64 16)
>>>> +; CHECK-NEXT: ret i32 [[CALL]]
>>>> +;
>>>> + %call = tail call i32 @memcmp(i8* %d, i8* %s, i64 16)
>>>> + ret i32 %call
>>>> +}
>>>> +
>>>> +define i32 @memcmp_const_size_update_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) {
>>>> +; CHECK-LABEL: @memcmp_const_size_update_deref(
>>>> +; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(16) [[D:%.*]], i8* dereferenceable(16) [[S:%.*]], i64 16)
>>>> +; CHECK-NEXT: ret i32 [[CALL]]
>>>> +;
>>>> + %call = tail call i32 @memcmp(i8* dereferenceable(4) %d, i8* dereferenceable(8) %s, i64 16)
>>>> + ret i32 %call
>>>> +}
>>>> +
>>>> +define i32 @memcmp_const_size_update_deref2(i8* nocapture readonly %d, i8* nocapture readonly %s) {
>>>> +; CHECK-LABEL: @memcmp_const_size_update_deref2(
>>>> +; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(16) [[D:%.*]], i8* dereferenceable(16) [[S:%.*]], i64 16)
>>>> +; CHECK-NEXT: ret i32 [[CALL]]
>>>> +;
>>>> + %call = tail call i32 @memcmp(i8* %d, i8* dereferenceable_or_null(8) %s, i64 16)
>>>> + ret i32 %call
>>>> +}
>>>> +
>>>> +define i32 @memcmp_const_size_no_update_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) {
>>>> +; CHECK-LABEL: @memcmp_const_size_no_update_deref(
>>>> +; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(40) [[D:%.*]], i8* dereferenceable(16) [[S:%.*]], i64 16)
>>>> +; CHECK-NEXT: ret i32 [[CALL]]
>>>> +;
>>>> + %call = tail call i32 @memcmp(i8* dereferenceable(40) %d, i8* %s, i64 16)
>>>> + ret i32 %call
>>>> +}
>>>> +
>>>> +define i32 @memcmp_const_size_no_update_deref2(i8* nocapture readonly %d, i8* nocapture readonly %s) {
>>>> +; CHECK-LABEL: @memcmp_const_size_no_update_deref2(
>>>> +; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(16) [[D:%.*]], i8* dereferenceable(16) [[S:%.*]], i64 16)
>>>> +; CHECK-NEXT: ret i32 [[CALL]]
>>>> +;
>>>> + %call = tail call i32 @memcmp(i8* dereferenceable_or_null(40) %d, i8* %s, i64 16)
>>>> + ret i32 %call
>>>> +}
>>>> +
>>>> +define i32 @memcmp_nonconst_size(i8* nocapture readonly %d, i8* nocapture readonly %s, i64 %n) {
>>>> +; CHECK-LABEL: @memcmp_nonconst_size(
>>>> +; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* [[D:%.*]], i8* [[S:%.*]], i64 [[N:%.*]])
>>>> +; CHECK-NEXT: ret i32 [[CALL]]
>>>> +;
>>>> + %call = tail call i32 @memcmp(i8* %d, i8* %s, i64 %n)
>>>> + ret i32 %call
>>>> +}
>>>> +
>>>> +define i8* @memcpy_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) {
>>>> +; CHECK-LABEL: @memcpy_const_size_set_deref(
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 dereferenceable(64) [[D:%.*]], i8* align 1 dereferenceable(64) [[S:%.*]], i64 64, i1 false)
>>>> +; CHECK-NEXT: ret i8* [[D]]
>>>> +;
>>>> + %call = tail call i8* @memcpy(i8* %d, i8* %s, i64 64)
>>>> + ret i8* %call
>>>> +}
>>>> +
>>>> +define i8* @memmove_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) {
>>>> +; CHECK-LABEL: @memmove_const_size_set_deref(
>>>> +; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i64(i8* align 1 dereferenceable(64) [[D:%.*]], i8* align 1 dereferenceable(64) [[S:%.*]], i64 64, i1 false)
>>>> +; CHECK-NEXT: ret i8* [[D]]
>>>> +;
>>>> + %call = tail call i8* @memmove(i8* %d, i8* %s, i64 64)
>>>> + ret i8* %call
>>>> +}
>>>> +
>>>> +define i8* @memset_const_size_set_deref(i8* nocapture readonly %s, i8 %c) {
>>>> +; CHECK-LABEL: @memset_const_size_set_deref(
>>>> +; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 1 dereferenceable(64) [[S:%.*]], i8 [[C:%.*]], i64 64, i1 false)
>>>> +; CHECK-NEXT: ret i8* [[S]]
>>>> +;
>>>> + %call = tail call i8* @memset(i8* %s, i8 %c, i64 64)
>>>> + ret i8* %call
>>>> +}
>>>> +
>>>> +define i8* @memchr_const_size_set_deref(i8* nocapture readonly %s, i32 %c) {
>>>> +; CHECK-LABEL: @memchr_const_size_set_deref(
>>>> +; CHECK-NEXT: [[CALL:%.*]] = tail call i8* @memchr(i8* dereferenceable(64) [[S:%.*]], i32 [[C:%.*]], i64 64)
>>>> +; CHECK-NEXT: ret i8* [[CALL]]
>>>> +;
>>>> + %call = tail call i8* @memchr(i8* %s, i32 %c, i64 64)
>>>> + ret i8* %call
>>>> +}
>>>> +
>>>> +define i8* @llvm_memcpy_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) {
>>>> +; CHECK-LABEL: @llvm_memcpy_const_size_set_deref(
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 dereferenceable(16) [[D:%.*]], i8* align 1 dereferenceable(16) [[S:%.*]], i64 16, i1 false)
>>>> +; CHECK-NEXT: ret i8* [[D]]
>>>> +;
>>>> + call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 %d, i8* align 1 %s, i64 16, i1 false)
>>>> + ret i8* %d
>>>> +}
>>>> +
>>>> +define i8* @llvm_memmove_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) {
>>>> +; CHECK-LABEL: @llvm_memmove_const_size_set_deref(
>>>> +; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i64(i8* align 1 dereferenceable(16) [[D:%.*]], i8* align 1 dereferenceable(16) [[S:%.*]], i64 16, i1 false)
>>>> +; CHECK-NEXT: ret i8* [[D]]
>>>> +;
>>>> + call void @llvm.memmove.p0i8.p0i8.i64(i8* align 1 %d, i8* align 1 %s, i64 16, i1 false)
>>>> + ret i8* %d
>>>> +}
>>>> +define i8* @llvm_memset_const_size_set_deref(i8* nocapture readonly %s, i8 %c) {
>>>> +; CHECK-LABEL: @llvm_memset_const_size_set_deref(
>>>> +; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 1 dereferenceable(16) [[S:%.*]], i8 [[C:%.*]], i64 16, i1 false)
>>>> +; CHECK-NEXT: ret i8* [[S]]
>>>> +;
>>>> + call void @llvm.memset.p0i8.i64(i8* align 1 %s, i8 %c, i64 16, i1 false)
>>>> + ret i8* %s
>>>> +}
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/memchr.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/memchr.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/memchr.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/memchr.ll Tue Aug 13 02:11:49 2019
>>>> @@ -50,7 +50,7 @@ define void @test3() {
>>>> define void @test4(i32 %chr) {
>>>> ; CHECK-LABEL: @test4(
>>>> -; CHECK-NEXT: [[DST:%.*]] = call i8* @memchr(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @hello, i32 0, i32 0), i32 [[CHR:%.*]], i32 14)
>>>> +; CHECK-NEXT: [[DST:%.*]] = call i8* @memchr(i8* dereferenceable(14) getelementptr inbounds ([14 x i8], [14 x i8]* @hello, i32 0, i32 0), i32 [[CHR:%.*]], i32 14)
>>>> ; CHECK-NEXT: store i8* [[DST]], i8** @chp, align 4
>>>> ; CHECK-NEXT: ret void
>>>> ;
>>>> @@ -148,7 +148,7 @@ define i1 @test11(i32 %C) {
>>>> ; No 64 bits here
>>>> define i1 @test12(i32 %C) {
>>>> ; CHECK-LABEL: @test12(
>>>> -; CHECK-NEXT: [[DST:%.*]] = call i8* @memchr(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @spaces, i32 0, i32 0), i32 [[C:%.*]], i32 3)
>>>> +; CHECK-NEXT: [[DST:%.*]] = call i8* @memchr(i8* dereferenceable(3) getelementptr inbounds ([4 x i8], [4 x i8]* @spaces, i32 0, i32 0), i32 [[C:%.*]], i32 3)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8* [[DST]], null
>>>> ; CHECK-NEXT: ret i1 [[CMP]]
>>>> ;
>>>> @@ -185,7 +185,7 @@ define i1 @test14(i32 %C) {
>>>> define i1 @test15(i32 %C) {
>>>> ; CHECK-LABEL: @test15(
>>>> -; CHECK-NEXT: [[DST:%.*]] = call i8* @memchr(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @negative, i32 0, i32 0), i32 [[C:%.*]], i32 3)
>>>> +; CHECK-NEXT: [[DST:%.*]] = call i8* @memchr(i8* dereferenceable(3) getelementptr inbounds ([3 x i8], [3 x i8]* @negative, i32 0, i32 0), i32 [[C:%.*]], i32 3)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8* [[DST]], null
>>>> ; CHECK-NEXT: ret i1 [[CMP]]
>>>> ;
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/memcmp-constant-fold.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/memcmp-constant-fold.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/memcmp-constant-fold.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/memcmp-constant-fold.ll Tue Aug 13 02:11:49 2019
>>>> @@ -1,3 +1,4 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> ; RUN: opt < %s -instcombine -S -data-layout=e-n32 | FileCheck %s --check-prefix=ALL --check-prefix=LE
>>>> ; RUN: opt < %s -instcombine -S -data-layout=E-n32 | FileCheck %s --check-prefix=ALL --check-prefix=BE
>>>> @@ -9,13 +10,13 @@ declare i32 @memcmp(i8*, i8*, i64)
>>>> define i1 @memcmp_4bytes_unaligned_constant_i8(i8* align 4 %x) {
>>>> ; LE-LABEL: @memcmp_4bytes_unaligned_constant_i8(
>>>> -; LE-NEXT: [[TMP1:%.*]] = bitcast i8* %x to i32*
>>>> +; LE-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i32*
>>>> ; LE-NEXT: [[LHSV:%.*]] = load i32, i32* [[TMP1]], align 4
>>>> ; LE-NEXT: [[TMP2:%.*]] = icmp eq i32 [[LHSV]], 16777216
>>>> ; LE-NEXT: ret i1 [[TMP2]]
>>>> ;
>>>> ; BE-LABEL: @memcmp_4bytes_unaligned_constant_i8(
>>>> -; BE-NEXT: [[TMP1:%.*]] = bitcast i8* %x to i32*
>>>> +; BE-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i32*
>>>> ; BE-NEXT: [[LHSV:%.*]] = load i32, i32* [[TMP1]], align 4
>>>> ; BE-NEXT: [[TMP2:%.*]] = icmp eq i32 [[LHSV]], 1
>>>> ; BE-NEXT: ret i1 [[TMP2]]
>>>> @@ -32,13 +33,13 @@ define i1 @memcmp_4bytes_unaligned_const
>>>> define i1 @memcmp_4bytes_unaligned_constant_i16(i8* align 4 %x) {
>>>> ; LE-LABEL: @memcmp_4bytes_unaligned_constant_i16(
>>>> -; LE-NEXT: [[TMP1:%.*]] = bitcast i8* %x to i32*
>>>> +; LE-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i32*
>>>> ; LE-NEXT: [[RHSV:%.*]] = load i32, i32* [[TMP1]], align 4
>>>> ; LE-NEXT: [[TMP2:%.*]] = icmp eq i32 [[RHSV]], 131073
>>>> ; LE-NEXT: ret i1 [[TMP2]]
>>>> ;
>>>> ; BE-LABEL: @memcmp_4bytes_unaligned_constant_i16(
>>>> -; BE-NEXT: [[TMP1:%.*]] = bitcast i8* %x to i32*
>>>> +; BE-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i32*
>>>> ; BE-NEXT: [[RHSV:%.*]] = load i32, i32* [[TMP1]], align 4
>>>> ; BE-NEXT: [[TMP2:%.*]] = icmp eq i32 [[RHSV]], 65538
>>>> ; BE-NEXT: ret i1 [[TMP2]]
>>>> @@ -54,7 +55,7 @@ define i1 @memcmp_4bytes_unaligned_const
>>>> define i1 @memcmp_3bytes_aligned_constant_i32(i8* align 4 %x) {
>>>> ; ALL-LABEL: @memcmp_3bytes_aligned_constant_i32(
>>>> -; ALL-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* bitcast (i32* getelementptr inbounds ([2 x i32], [2 x i32]* @intbuf, i64 0, i64 1) to i8*), i8* bitcast ([2 x i32]* @intbuf to i8*), i64 3)
>>>> +; ALL-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(3) bitcast (i32* getelementptr inbounds ([2 x i32], [2 x i32]* @intbuf, i64 0, i64 1) to i8*), i8* dereferenceable(3) bitcast ([2 x i32]* @intbuf to i8*), i64 3)
>>>> ; ALL-NEXT: [[CMPEQ0:%.*]] = icmp eq i32 [[CALL]], 0
>>>> ; ALL-NEXT: ret i1 [[CMPEQ0]]
>>>> ;
>>>> @@ -67,7 +68,7 @@ define i1 @memcmp_3bytes_aligned_constan
>>>> define i1 @memcmp_4bytes_one_unaligned_i8(i8* align 4 %x, i8* align 1 %y) {
>>>> ; ALL-LABEL: @memcmp_4bytes_one_unaligned_i8(
>>>> -; ALL-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* %x, i8* %y, i64 4)
>>>> +; ALL-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(4) [[X:%.*]], i8* dereferenceable(4) [[Y:%.*]], i64 4)
>>>> ; ALL-NEXT: [[CMPEQ0:%.*]] = icmp eq i32 [[CALL]], 0
>>>> ; ALL-NEXT: ret i1 [[CMPEQ0]]
>>>> ;
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/memcpy-from-global.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/memcpy-from-global.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/memcpy-from-global.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/memcpy-from-global.ll Tue Aug 13 02:11:49 2019
>>>> @@ -1,39 +1,66 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> ; RUN: opt < %s -instcombine -S | FileCheck %s
>>>> target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64"
>>>> @C.0.1248 = internal constant [128 x float] [ float -1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00 ], align 32 ; <[128 x float]*> [#uses=1]
>>>> define float @test1(i32 %hash, float %x, float %y, float %z, float %w) {
>>>> -entry:
>>>> - %lookupTable = alloca [128 x float], align 16 ; <[128 x float]*> [#uses=5]
>>>> - %lookupTable1 = bitcast [128 x float]* %lookupTable to i8* ; <i8*> [#uses=1]
>>>> - call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 %lookupTable1, i8* align 16 bitcast ([128 x float]* @C.0.1248 to i8*), i64 512, i1 false)
>>>> -
>>>> ; CHECK-LABEL: @test1(
>>>> -; CHECK-NOT: alloca
>>>> -; CHECK-NOT: call{{.*}}@llvm.memcpy
>>>> -
>>>> - %tmp3 = shl i32 %hash, 2 ; <i32> [#uses=1]
>>>> - %tmp5 = and i32 %tmp3, 124 ; <i32> [#uses=4]
>>>> - %tmp753 = getelementptr [128 x float], [128 x float]* %lookupTable, i32 0, i32 %tmp5 ; <float*> [#uses=1]
>>>> - %tmp9 = load float, float* %tmp753 ; <float> [#uses=1]
>>>> - %tmp11 = fmul float %tmp9, %x ; <float> [#uses=1]
>>>> - %tmp13 = fadd float %tmp11, 0.000000e+00 ; <float> [#uses=1]
>>>> - %tmp17.sum52 = or i32 %tmp5, 1 ; <i32> [#uses=1]
>>>> - %tmp1851 = getelementptr [128 x float], [128 x float]* %lookupTable, i32 0, i32 %tmp17.sum52 ; <float*> [#uses=1]
>>>> - %tmp19 = load float, float* %tmp1851 ; <float> [#uses=1]
>>>> - %tmp21 = fmul float %tmp19, %y ; <float> [#uses=1]
>>>> - %tmp23 = fadd float %tmp21, %tmp13 ; <float> [#uses=1]
>>>> - %tmp27.sum50 = or i32 %tmp5, 2 ; <i32> [#uses=1]
>>>> - %tmp2849 = getelementptr [128 x float], [128 x float]* %lookupTable, i32 0, i32 %tmp27.sum50 ; <float*> [#uses=1]
>>>> - %tmp29 = load float, float* %tmp2849 ; <float> [#uses=1]
>>>> - %tmp31 = fmul float %tmp29, %z ; <float> [#uses=1]
>>>> - %tmp33 = fadd float %tmp31, %tmp23 ; <float> [#uses=1]
>>>> - %tmp37.sum48 = or i32 %tmp5, 3 ; <i32> [#uses=1]
>>>> - %tmp3847 = getelementptr [128 x float], [128 x float]* %lookupTable, i32 0, i32 %tmp37.sum48 ; <float*> [#uses=1]
>>>> - %tmp39 = load float, float* %tmp3847 ; <float> [#uses=1]
>>>> - %tmp41 = fmul float %tmp39, %w ; <float> [#uses=1]
>>>> - %tmp43 = fadd float %tmp41, %tmp33 ; <float> [#uses=1]
>>>> - ret float %tmp43
>>>> +; CHECK-NEXT: entry:
>>>> +; CHECK-NEXT: [[TMP3:%.*]] = shl i32 [[HASH:%.*]], 2
>>>> +; CHECK-NEXT: [[TMP5:%.*]] = and i32 [[TMP3]], 124
>>>> +; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[TMP5]] to i64
>>>> +; CHECK-NEXT: [[TMP753:%.*]] = getelementptr [128 x float], [128 x float]* @C.0.1248, i64 0, i64 [[TMP0]]
>>>> +; CHECK-NEXT: [[TMP9:%.*]] = load float, float* [[TMP753]], align 16
>>>> +; CHECK-NEXT: [[TMP11:%.*]] = fmul float [[TMP9]], [[X:%.*]]
>>>> +; CHECK-NEXT: [[TMP13:%.*]] = fadd float [[TMP11]], 0.000000e+00
>>>> +; CHECK-NEXT: [[TMP17_SUM52:%.*]] = or i32 [[TMP5]], 1
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = zext i32 [[TMP17_SUM52]] to i64
>>>> +; CHECK-NEXT: [[TMP1851:%.*]] = getelementptr [128 x float], [128 x float]* @C.0.1248, i64 0, i64 [[TMP1]]
>>>> +; CHECK-NEXT: [[TMP19:%.*]] = load float, float* [[TMP1851]], align 4
>>>> +; CHECK-NEXT: [[TMP21:%.*]] = fmul float [[TMP19]], [[Y:%.*]]
>>>> +; CHECK-NEXT: [[TMP23:%.*]] = fadd float [[TMP21]], [[TMP13]]
>>>> +; CHECK-NEXT: [[TMP27_SUM50:%.*]] = or i32 [[TMP5]], 2
>>>> +; CHECK-NEXT: [[TMP2:%.*]] = zext i32 [[TMP27_SUM50]] to i64
>>>> +; CHECK-NEXT: [[TMP2849:%.*]] = getelementptr [128 x float], [128 x float]* @C.0.1248, i64 0, i64 [[TMP2]]
>>>> +; CHECK-NEXT: [[TMP29:%.*]] = load float, float* [[TMP2849]], align 8
>>>> +; CHECK-NEXT: [[TMP31:%.*]] = fmul float [[TMP29]], [[Z:%.*]]
>>>> +; CHECK-NEXT: [[TMP33:%.*]] = fadd float [[TMP31]], [[TMP23]]
>>>> +; CHECK-NEXT: [[TMP37_SUM48:%.*]] = or i32 [[TMP5]], 3
>>>> +; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[TMP37_SUM48]] to i64
>>>> +; CHECK-NEXT: [[TMP3847:%.*]] = getelementptr [128 x float], [128 x float]* @C.0.1248, i64 0, i64 [[TMP3]]
>>>> +; CHECK-NEXT: [[TMP39:%.*]] = load float, float* [[TMP3847]], align 4
>>>> +; CHECK-NEXT: [[TMP41:%.*]] = fmul float [[TMP39]], [[W:%.*]]
>>>> +; CHECK-NEXT: [[TMP43:%.*]] = fadd float [[TMP41]], [[TMP33]]
>>>> +; CHECK-NEXT: ret float [[TMP43]]
>>>> +;
>>>> +entry:
>>>> + %lookupTable = alloca [128 x float], align 16 ; <[128 x float]*> [#uses=5]
>>>> + %lookupTable1 = bitcast [128 x float]* %lookupTable to i8* ; <i8*> [#uses=1]
>>>> + call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 %lookupTable1, i8* align 16 bitcast ([128 x float]* @C.0.1248 to i8*), i64 512, i1 false)
>>>> +
>>>> +
>>>> + %tmp3 = shl i32 %hash, 2 ; <i32> [#uses=1]
>>>> + %tmp5 = and i32 %tmp3, 124 ; <i32> [#uses=4]
>>>> + %tmp753 = getelementptr [128 x float], [128 x float]* %lookupTable, i32 0, i32 %tmp5 ; <float*> [#uses=1]
>>>> + %tmp9 = load float, float* %tmp753 ; <float> [#uses=1]
>>>> + %tmp11 = fmul float %tmp9, %x ; <float> [#uses=1]
>>>> + %tmp13 = fadd float %tmp11, 0.000000e+00 ; <float> [#uses=1]
>>>> + %tmp17.sum52 = or i32 %tmp5, 1 ; <i32> [#uses=1]
>>>> + %tmp1851 = getelementptr [128 x float], [128 x float]* %lookupTable, i32 0, i32 %tmp17.sum52 ; <float*> [#uses=1]
>>>> + %tmp19 = load float, float* %tmp1851 ; <float> [#uses=1]
>>>> + %tmp21 = fmul float %tmp19, %y ; <float> [#uses=1]
>>>> + %tmp23 = fadd float %tmp21, %tmp13 ; <float> [#uses=1]
>>>> + %tmp27.sum50 = or i32 %tmp5, 2 ; <i32> [#uses=1]
>>>> + %tmp2849 = getelementptr [128 x float], [128 x float]* %lookupTable, i32 0, i32 %tmp27.sum50 ; <float*> [#uses=1]
>>>> + %tmp29 = load float, float* %tmp2849 ; <float> [#uses=1]
>>>> + %tmp31 = fmul float %tmp29, %z ; <float> [#uses=1]
>>>> + %tmp33 = fadd float %tmp31, %tmp23 ; <float> [#uses=1]
>>>> + %tmp37.sum48 = or i32 %tmp5, 3 ; <i32> [#uses=1]
>>>> + %tmp3847 = getelementptr [128 x float], [128 x float]* %lookupTable, i32 0, i32 %tmp37.sum48 ; <float*> [#uses=1]
>>>> + %tmp39 = load float, float* %tmp3847 ; <float> [#uses=1]
>>>> + %tmp41 = fmul float %tmp39, %w ; <float> [#uses=1]
>>>> + %tmp43 = fadd float %tmp41, %tmp33 ; <float> [#uses=1]
>>>> + ret float %tmp43
>>>> }
>>>> declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) nounwind
>>>> @@ -48,19 +75,22 @@ declare void @llvm.memcpy.p1i8.p1i8.i64(
>>>> @H = constant [2 x %U] zeroinitializer, align 16
>>>> define void @test2() {
>>>> +; CHECK-LABEL: @test2(
>>>> +; CHECK-NEXT: [[B1:%.*]] = alloca [124 x i8], align 8
>>>> +; CHECK-NEXT: [[B1_SUB:%.*]] = getelementptr inbounds [124 x i8], [124 x i8]* [[B1]], i64 0, i64 0
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 8 dereferenceable(124) [[B1_SUB]], i8* align 16 dereferenceable(124) getelementptr inbounds (%T, %T* @G, i64 0, i32 0), i64 124, i1 false)
>>>> +; CHECK-NEXT: call void @bar(i8* nonnull [[B1_SUB]])
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> %A = alloca %T
>>>> %B = alloca %T
>>>> %a = bitcast %T* %A to i8*
>>>> %b = bitcast %T* %B to i8*
>>>> -; CHECK-LABEL: @test2(
>>>> ; %A alloca is deleted
>>>> -; CHECK-NEXT: alloca [124 x i8]
>>>> -; CHECK-NEXT: getelementptr inbounds [124 x i8], [124 x i8]*
>>>> ; use @G instead of %A
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 8 %{{.*}}, i8* align 16 getelementptr inbounds (%T, %T* @G, i64 0, i32 0)
>>>> call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %a, i8* align 4 bitcast (%T* @G to i8*), i64 124, i1 false)
>>>> call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %b, i8* align 4 %a, i64 124, i1 false)
>>>> call void @bar(i8* %b)
>>>> @@ -68,19 +98,22 @@ define void @test2() {
>>>> }
>>>> define void @test2_no_null_opt() #0 {
>>>> +; CHECK-LABEL: @test2_no_null_opt(
>>>> +; CHECK-NEXT: [[B1:%.*]] = alloca [124 x i8], align 8
>>>> +; CHECK-NEXT: [[B1_SUB:%.*]] = getelementptr inbounds [124 x i8], [124 x i8]* [[B1]], i64 0, i64 0
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 dereferenceable(124) [[B1_SUB]], i8* align 16 dereferenceable(124) getelementptr inbounds (%T, %T* @G, i64 0, i32 0), i64 124, i1 false)
>>>> +; CHECK-NEXT: call void @bar(i8* [[B1_SUB]])
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> %A = alloca %T
>>>> %B = alloca %T
>>>> %a = bitcast %T* %A to i8*
>>>> %b = bitcast %T* %B to i8*
>>>> -; CHECK-LABEL: @test2_no_null_opt(
>>>> ; %A alloca is deleted
>>>> -; CHECK-NEXT: alloca [124 x i8]
>>>> -; CHECK-NEXT: getelementptr inbounds [124 x i8], [124 x i8]*
>>>> ; use @G instead of %A
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %{{.*}}, i8* align 16 getelementptr inbounds (%T, %T* @G, i64 0, i32 0)
>>>> call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %a, i8* align 4 bitcast (%T* @G to i8*), i64 124, i1 false)
>>>> call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %b, i8* align 4 %a, i64 124, i1 false)
>>>> call void @bar(i8* %b)
>>>> @@ -88,22 +121,25 @@ define void @test2_no_null_opt() #0 {
>>>> }
>>>> define void @test2_addrspacecast() {
>>>> +; CHECK-LABEL: @test2_addrspacecast(
>>>> +; CHECK-NEXT: [[B1:%.*]] = alloca [124 x i8], align 8
>>>> +; CHECK-NEXT: [[B1_SUB:%.*]] = getelementptr inbounds [124 x i8], [124 x i8]* [[B1]], i64 0, i64 0
>>>> +; CHECK-NEXT: [[B:%.*]] = addrspacecast i8* [[B1_SUB]] to i8 addrspace(1)*
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p1i8.p1i8.i64(i8 addrspace(1)* align 4 dereferenceable(124) [[B]], i8 addrspace(1)* align 4 dereferenceable(124) addrspacecast (i8* getelementptr inbounds (%T, %T* @G, i64 0, i32 0) to i8 addrspace(1)*), i64 124, i1 false)
>>>> +; CHECK-NEXT: call void @bar_as1(i8 addrspace(1)* [[B]])
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> %A = alloca %T
>>>> %B = alloca %T
>>>> %a = addrspacecast %T* %A to i8 addrspace(1)*
>>>> %b = addrspacecast %T* %B to i8 addrspace(1)*
>>>> -; CHECK-LABEL: @test2_addrspacecast(
>>>> ; %A alloca is deleted
>>>> ; This doesn't exactly match what test2 does, because folding the type
>>>> ; cast into the alloca doesn't work for the addrspacecast yet.
>>>> -; CHECK-NEXT: alloca [124 x i8]
>>>> -; CHECK-NEXT: getelementptr
>>>> -; CHECK-NEXT: addrspacecast
>>>> ; use @G instead of %A
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p1i8.p1i8.i64(i8 addrspace(1)* align 4 %{{.*}},
>>>> call void @llvm.memcpy.p1i8.p0i8.i64(i8 addrspace(1)* align 4 %a, i8* align 4 bitcast (%T* @G to i8*), i64 124, i1 false)
>>>> call void @llvm.memcpy.p1i8.p1i8.i64(i8 addrspace(1)* align 4 %b, i8 addrspace(1)* align 4 %a, i64 124, i1 false)
>>>> call void @bar_as1(i8 addrspace(1)* %b)
>>>> @@ -116,45 +152,53 @@ declare void @bar_as1(i8 addrspace(1)*)
>>>> ;; Should be able to eliminate the alloca.
>>>> define void @test3() {
>>>> +; CHECK-LABEL: @test3(
>>>> +; CHECK-NEXT: call void @bar(i8* getelementptr inbounds (%T, %T* @G, i64 0, i32 0)) #2
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> %A = alloca %T
>>>> %a = bitcast %T* %A to i8*
>>>> call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %a, i8* align 4 bitcast (%T* @G to i8*), i64 124, i1 false)
>>>> call void @bar(i8* %a) readonly
>>>> -; CHECK-LABEL: @test3(
>>>> -; CHECK-NEXT: call void @bar(i8* getelementptr inbounds (%T, %T* @G, i64 0, i32 0))
>>>> ret void
>>>> }
>>>> define void @test3_addrspacecast() {
>>>> +; CHECK-LABEL: @test3_addrspacecast(
>>>> +; CHECK-NEXT: call void @bar(i8* getelementptr inbounds (%T, %T* @G, i64 0, i32 0)) #2
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> %A = alloca %T
>>>> %a = bitcast %T* %A to i8*
>>>> call void @llvm.memcpy.p0i8.p1i8.i64(i8* align 4 %a, i8 addrspace(1)* align 4 addrspacecast (%T* @G to i8 addrspace(1)*), i64 124, i1 false)
>>>> call void @bar(i8* %a) readonly
>>>> -; CHECK-LABEL: @test3_addrspacecast(
>>>> -; CHECK-NEXT: call void @bar(i8* getelementptr inbounds (%T, %T* @G, i64 0, i32 0))
>>>> ret void
>>>> }
>>>> define void @test4() {
>>>> +; CHECK-LABEL: @test4(
>>>> +; CHECK-NEXT: call void @baz(i8* byval getelementptr inbounds (%T, %T* @G, i64 0, i32 0))
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> %A = alloca %T
>>>> %a = bitcast %T* %A to i8*
>>>> call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %a, i8* align 4 bitcast (%T* @G to i8*), i64 124, i1 false)
>>>> call void @baz(i8* byval %a)
>>>> -; CHECK-LABEL: @test4(
>>>> -; CHECK-NEXT: call void @baz(i8* byval getelementptr inbounds (%T, %T* @G, i64 0, i32 0))
>>>> ret void
>>>> }
>>>> declare void @llvm.lifetime.start.p0i8(i64, i8*)
>>>> define void @test5() {
>>>> +; CHECK-LABEL: @test5(
>>>> +; CHECK-NEXT: call void @baz(i8* byval getelementptr inbounds (%T, %T* @G, i64 0, i32 0))
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> %A = alloca %T
>>>> %a = bitcast %T* %A to i8*
>>>> call void @llvm.lifetime.start.p0i8(i64 -1, i8* %a)
>>>> call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %a, i8* align 4 bitcast (%T* @G to i8*), i64 124, i1 false)
>>>> call void @baz(i8* byval %a)
>>>> -; CHECK-LABEL: @test5(
>>>> -; CHECK-NEXT: call void @baz(i8* byval getelementptr inbounds (%T, %T* @G, i64 0, i32 0))
>>>> ret void
>>>> }
>>>> @@ -163,65 +207,81 @@ declare void @baz(i8* byval)
>>>> define void @test6() {
>>>> +; CHECK-LABEL: @test6(
>>>> +; CHECK-NEXT: call void @bar(i8* bitcast ([2 x %U]* @H to i8*)) #2
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> %A = alloca %U, align 16
>>>> %a = bitcast %U* %A to i8*
>>>> call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 %a, i8* align 16 bitcast ([2 x %U]* @H to i8*), i64 20, i1 false)
>>>> call void @bar(i8* %a) readonly
>>>> -; CHECK-LABEL: @test6(
>>>> -; CHECK-NEXT: call void @bar(i8* bitcast ([2 x %U]* @H to i8*))
>>>> ret void
>>>> }
>>>> define void @test7() {
>>>> +; CHECK-LABEL: @test7(
>>>> +; CHECK-NEXT: call void @bar(i8* bitcast ([2 x %U]* @H to i8*)) #2
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> %A = alloca %U, align 16
>>>> %a = bitcast %U* %A to i8*
>>>> call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %a, i8* align 4 bitcast (%U* getelementptr ([2 x %U], [2 x %U]* @H, i64 0, i32 0) to i8*), i64 20, i1 false)
>>>> call void @bar(i8* %a) readonly
>>>> -; CHECK-LABEL: @test7(
>>>> -; CHECK-NEXT: call void @bar(i8* bitcast ([2 x %U]* @H to i8*))
>>>> ret void
>>>> }
>>>> define void @test8() {
>>>> - %A = alloca %U, align 16
>>>> - %a = bitcast %U* %A to i8*
>>>> +; CHECK-LABEL: @test8(
>>>> +; CHECK-NEXT: [[AL:%.*]] = alloca [[U:%.*]], align 16
>>>> +; CHECK-NEXT: [[A:%.*]] = bitcast %U* [[AL]] to i8*
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 16 dereferenceable(20) [[A]], i8* align 4 dereferenceable(20) bitcast (%U* getelementptr inbounds ([2 x %U], [2 x %U]* @H, i64 0, i64 1) to i8*), i64 20, i1 false)
>>>> +; CHECK-NEXT: call void @bar(i8* nonnull [[A]]) #2
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> + %al = alloca %U, align 16
>>>> + %a = bitcast %U* %al to i8*
>>>> call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %a, i8* align 4 bitcast (%U* getelementptr ([2 x %U], [2 x %U]* @H, i64 0, i32 1) to i8*), i64 20, i1 false)
>>>> call void @bar(i8* %a) readonly
>>>> -; CHECK-LABEL: @test8(
>>>> -; CHECK: llvm.memcpy
>>>> -; CHECK: bar
>>>> ret void
>>>> }
>>>> define void @test8_addrspacecast() {
>>>> - %A = alloca %U, align 16
>>>> - %a = bitcast %U* %A to i8*
>>>> +; CHECK-LABEL: @test8_addrspacecast(
>>>> +; CHECK-NEXT: [[AL:%.*]] = alloca [[U:%.*]], align 16
>>>> +; CHECK-NEXT: [[A:%.*]] = bitcast %U* [[AL]] to i8*
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p1i8.i64(i8* nonnull align 16 dereferenceable(20) [[A]], i8 addrspace(1)* align 4 dereferenceable(20) addrspacecast (i8* bitcast (%U* getelementptr inbounds ([2 x %U], [2 x %U]* @H, i64 0, i64 1) to i8*) to i8 addrspace(1)*), i64 20, i1 false)
>>>> +; CHECK-NEXT: call void @bar(i8* nonnull [[A]]) #2
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> + %Al = alloca %U, align 16
>>>> + %a = bitcast %U* %Al to i8*
>>>> call void @llvm.memcpy.p0i8.p1i8.i64(i8* align 4 %a, i8 addrspace(1)* align 4 addrspacecast (%U* getelementptr ([2 x %U], [2 x %U]* @H, i64 0, i32 1) to i8 addrspace(1)*), i64 20, i1 false)
>>>> call void @bar(i8* %a) readonly
>>>> -; CHECK-LABEL: @test8_addrspacecast(
>>>> -; CHECK: llvm.memcpy
>>>> -; CHECK: bar
>>>> ret void
>>>> }
>>>> define void @test9() {
>>>> +; CHECK-LABEL: @test9(
>>>> +; CHECK-NEXT: call void @bar(i8* bitcast (%U* getelementptr inbounds ([2 x %U], [2 x %U]* @H, i64 0, i64 1) to i8*)) #2
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> %A = alloca %U, align 4
>>>> %a = bitcast %U* %A to i8*
>>>> call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %a, i8* align 4 bitcast (%U* getelementptr ([2 x %U], [2 x %U]* @H, i64 0, i32 1) to i8*), i64 20, i1 false)
>>>> call void @bar(i8* %a) readonly
>>>> -; CHECK-LABEL: @test9(
>>>> -; CHECK-NEXT: call void @bar(i8* bitcast (%U* getelementptr inbounds ([2 x %U], [2 x %U]* @H, i64 0, i64 1) to i8*))
>>>> ret void
>>>> }
>>>> define void @test9_addrspacecast() {
>>>> +; CHECK-LABEL: @test9_addrspacecast(
>>>> +; CHECK-NEXT: call void @bar(i8* bitcast (%U* getelementptr inbounds ([2 x %U], [2 x %U]* @H, i64 0, i64 1) to i8*)) #2
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> %A = alloca %U, align 4
>>>> %a = bitcast %U* %A to i8*
>>>> call void @llvm.memcpy.p0i8.p1i8.i64(i8* align 4 %a, i8 addrspace(1)* align 4 addrspacecast (%U* getelementptr ([2 x %U], [2 x %U]* @H, i64 0, i32 1) to i8 addrspace(1)*), i64 20, i1 false)
>>>> call void @bar(i8* %a) readonly
>>>> -; CHECK-LABEL: @test9_addrspacecast(
>>>> -; CHECK-NEXT: call void @bar(i8* bitcast (%U* getelementptr inbounds ([2 x %U], [2 x %U]* @H, i64 0, i64 1) to i8*))
>>>> ret void
>>>> }
>>>> @@ -231,8 +291,13 @@ define void @test9_addrspacecast() {
>>>> ; Should not replace alloca with global because of size mismatch.
>>>> define void @test9_small_global() {
>>>> ; CHECK-LABEL: @test9_small_global(
>>>> -; CHECK-NOT: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}}@bbb,{{.*}}@_ZL3KKK,
>>>> -; CHECK: alloca [1000000 x i8]
>>>> +; CHECK-NEXT: entry:
>>>> +; CHECK-NEXT: [[CC:%.*]] = alloca [1000000 x i8], align 16
>>>> +; CHECK-NEXT: [[ARRAYDECAY:%.*]] = getelementptr inbounds [1000000 x i8], [1000000 x i8]* [[CC]], i64 0, i64 0
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 16 dereferenceable(3) [[ARRAYDECAY]], i8* align 16 dereferenceable(3) getelementptr inbounds ([3 x i8], [3 x i8]* @_ZL3KKK, i64 0, i64 0), i64 3, i1 false)
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 dereferenceable(1000000) getelementptr inbounds ([1000000 x i8], [1000000 x i8]* @bbb, i64 0, i64 0), i8* nonnull align 16 dereferenceable(1000000) [[ARRAYDECAY]], i64 1000000, i1 false)
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> entry:
>>>> %cc = alloca [1000000 x i8], align 16
>>>> %cc.0..sroa_idx = getelementptr inbounds [1000000 x i8], [1000000 x i8]* %cc, i64 0, i64 0
>>>> @@ -245,8 +310,10 @@ entry:
>>>> ; Should replace alloca with global as they have exactly the same size.
>>>> define void @test10_same_global() {
>>>> ; CHECK-LABEL: @test10_same_global(
>>>> -; CHECK-NOT: alloca
>>>> -; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}}@bbb,{{.*}}@_ZL3KKK,{{.*}}, i64 3,
>>>> +; CHECK-NEXT: entry:
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 dereferenceable(3) getelementptr inbounds ([1000000 x i8], [1000000 x i8]* @bbb, i64 0, i64 0), i8* align 16 dereferenceable(3) getelementptr inbounds ([3 x i8], [3 x i8]* @_ZL3KKK, i64 0, i64 0), i64 3, i1 false)
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> entry:
>>>> %cc = alloca [3 x i8], align 1
>>>> %cc.0..sroa_idx = getelementptr inbounds [3 x i8], [3 x i8]* %cc, i64 0, i64 0
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/memcpy-to-load.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/memcpy-to-load.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/memcpy-to-load.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/memcpy-to-load.ll Tue Aug 13 02:11:49 2019
>>>> @@ -34,7 +34,7 @@ define void @copy_2_bytes(i8* %d, i8* %s
>>>> define void @copy_3_bytes(i8* %d, i8* %s) {
>>>> ; ALL-LABEL: @copy_3_bytes(
>>>> -; ALL-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 [[D:%.*]], i8* align 1 [[S:%.*]], i32 3, i1 false)
>>>> +; ALL-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 dereferenceable(3) [[D:%.*]], i8* align 1 dereferenceable(3) [[S:%.*]], i32 3, i1 false)
>>>> ; ALL-NEXT: ret void
>>>> ;
>>>> call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %s, i32 3, i1 false)
>>>> @@ -57,7 +57,7 @@ define void @copy_4_bytes(i8* %d, i8* %s
>>>> define void @copy_5_bytes(i8* %d, i8* %s) {
>>>> ; ALL-LABEL: @copy_5_bytes(
>>>> -; ALL-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 [[D:%.*]], i8* align 1 [[S:%.*]], i32 5, i1 false)
>>>> +; ALL-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 dereferenceable(5) [[D:%.*]], i8* align 1 dereferenceable(5) [[S:%.*]], i32 5, i1 false)
>>>> ; ALL-NEXT: ret void
>>>> ;
>>>> call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %s, i32 5, i1 false)
>>>> @@ -78,7 +78,7 @@ define void @copy_8_bytes(i8* %d, i8* %s
>>>> define void @copy_16_bytes(i8* %d, i8* %s) {
>>>> ; ALL-LABEL: @copy_16_bytes(
>>>> -; ALL-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 [[D:%.*]], i8* align 1 [[S:%.*]], i32 16, i1 false)
>>>> +; ALL-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 dereferenceable(16) [[D:%.*]], i8* align 1 dereferenceable(16) [[S:%.*]], i32 16, i1 false)
>>>> ; ALL-NEXT: ret void
>>>> ;
>>>> call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %s, i32 16, i1 false)
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/memcpy.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/memcpy.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/memcpy.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/memcpy.ll Tue Aug 13 02:11:49 2019
>>>> @@ -29,7 +29,7 @@ define void @test2(i8* %a) {
>>>> define void @test3(i8* %d, i8* %s) {
>>>> ; CHECK-LABEL: @test3(
>>>> -; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 [[D:%.*]], i8* align 4 [[S:%.*]], i64 17179869184, i1 false)
>>>> +; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 dereferenceable(17179869184) [[D:%.*]], i8* align 4 dereferenceable(17179869184) [[S:%.*]], i64 17179869184, i1 false)
>>>> ; CHECK-NEXT: ret void
>>>> ;
>>>> tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %d, i8* align 4 %s, i64 17179869184, i1 false)
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/memcpy_chk-1.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/memcpy_chk-1.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/memcpy_chk-1.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/memcpy_chk-1.ll Tue Aug 13 02:11:49 2019
>>>> @@ -1,3 +1,4 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> ; Test lib call simplification of __memcpy_chk calls with various values
>>>> ; for dstlen and len.
>>>> ;
>>>> @@ -17,22 +18,22 @@ target datalayout = "e-p:64:64:64-i1:8:8
>>>> define i8* @test_simplify1() {
>>>> ; CHECK-LABEL: @test_simplify1(
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 dereferenceable(1824) bitcast (%struct.T1* @t1 to i8*), i8* align 4 dereferenceable(1824) bitcast (%struct.T2* @t2 to i8*), i64 1824, i1 false)
>>>> +; CHECK-NEXT: ret i8* bitcast (%struct.T1* @t1 to i8*)
>>>> +;
>>>> %dst = bitcast %struct.T1* @t1 to i8*
>>>> %src = bitcast %struct.T2* @t2 to i8*
>>>> -
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 bitcast (%struct.T1* @t1 to i8*), i8* align 4 bitcast (%struct.T2* @t2 to i8*), i64 1824, i1 false)
>>>> -; CHECK-NEXT: ret i8* bitcast (%struct.T1* @t1 to i8*)
>>>> %ret = call i8* @__memcpy_chk(i8* %dst, i8* %src, i64 1824, i64 1824)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_simplify2() {
>>>> ; CHECK-LABEL: @test_simplify2(
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 dereferenceable(1824) bitcast (%struct.T1* @t1 to i8*), i8* align 4 dereferenceable(1824) bitcast (%struct.T3* @t3 to i8*), i64 1824, i1 false)
>>>> +; CHECK-NEXT: ret i8* bitcast (%struct.T1* @t1 to i8*)
>>>> +;
>>>> %dst = bitcast %struct.T1* @t1 to i8*
>>>> %src = bitcast %struct.T3* @t3 to i8*
>>>> -
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 bitcast (%struct.T1* @t1 to i8*), i8* align 4 bitcast (%struct.T3* @t3 to i8*), i64 1824, i1 false)
>>>> -; CHECK-NEXT: ret i8* bitcast (%struct.T1* @t1 to i8*)
>>>> %ret = call i8* @__memcpy_chk(i8* %dst, i8* %src, i64 1824, i64 2848)
>>>> ret i8* %ret
>>>> }
>>>> @@ -41,36 +42,35 @@ define i8* @test_simplify2() {
>>>> define i8* @test_no_simplify1() {
>>>> ; CHECK-LABEL: @test_no_simplify1(
>>>> +; CHECK-NEXT: [[RET:%.*]] = call i8* @__memcpy_chk(i8* bitcast (%struct.T3* @t3 to i8*), i8* bitcast (%struct.T1* @t1 to i8*), i64 2848, i64 1824)
>>>> +; CHECK-NEXT: ret i8* [[RET]]
>>>> +;
>>>> %dst = bitcast %struct.T3* @t3 to i8*
>>>> %src = bitcast %struct.T1* @t1 to i8*
>>>> -
>>>> -; CHECK-NEXT: %ret = call i8* @__memcpy_chk(i8* bitcast (%struct.T3* @t3 to i8*), i8* bitcast (%struct.T1* @t1 to i8*), i64 2848, i64 1824)
>>>> -; CHECK-NEXT: ret i8* %ret
>>>> %ret = call i8* @__memcpy_chk(i8* %dst, i8* %src, i64 2848, i64 1824)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_no_simplify2() {
>>>> ; CHECK-LABEL: @test_no_simplify2(
>>>> +; CHECK-NEXT: [[RET:%.*]] = call i8* @__memcpy_chk(i8* bitcast (%struct.T1* @t1 to i8*), i8* bitcast (%struct.T2* @t2 to i8*), i64 1024, i64 0)
>>>> +; CHECK-NEXT: ret i8* [[RET]]
>>>> +;
>>>> %dst = bitcast %struct.T1* @t1 to i8*
>>>> %src = bitcast %struct.T2* @t2 to i8*
>>>> -
>>>> -; CHECK-NEXT: %ret = call i8* @__memcpy_chk(i8* bitcast (%struct.T1* @t1 to i8*), i8* bitcast (%struct.T2* @t2 to i8*), i64 1024, i64 0)
>>>> -; CHECK-NEXT: ret i8* %ret
>>>> %ret = call i8* @__memcpy_chk(i8* %dst, i8* %src, i64 1024, i64 0)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_simplify_return_indcall(i8* ()* %alloc) {
>>>> ; CHECK-LABEL: @test_simplify_return_indcall(
>>>> +; CHECK-NEXT: [[DST:%.*]] = call i8* [[ALLOC:%.*]]()
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 dereferenceable(1824) [[DST]], i8* align 4 dereferenceable(1824) bitcast (%struct.T2* @t2 to i8*), i64 1824, i1 false)
>>>> +; CHECK-NEXT: ret i8* [[DST]]
>>>> +;
>>>> %src = bitcast %struct.T2* @t2 to i8*
>>>> -
>>>> -; CHECK-NEXT: %dst = call i8* %alloc()
>>>> %dst = call i8* %alloc()
>>>> -
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64
>>>> %ret = call i8* @__memcpy_chk(i8* %dst, i8* %src, i64 1824, i64 1824)
>>>> -; CHECK-NEXT: ret i8* %dst
>>>> ret i8* %ret
>>>> }
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/memmove_chk-1.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/memmove_chk-1.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/memmove_chk-1.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/memmove_chk-1.ll Tue Aug 13 02:11:49 2019
>>>> @@ -1,3 +1,4 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> ; Test lib call simplification of __memmove_chk calls with various values
>>>> ; for dstlen and len.
>>>> ;
>>>> @@ -17,22 +18,24 @@ target datalayout = "e-p:64:64:64-i1:8:8
>>>> define i8* @test_simplify1() {
>>>> ; CHECK-LABEL: @test_simplify1(
>>>> +; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i64(i8* align 4 dereferenceable(1824) bitcast (%struct.T1* @t1 to i8*), i8* align 4 dereferenceable(1824) bitcast (%struct.T2* @t2 to i8*), i64 1824, i1 false)
>>>> +; CHECK-NEXT: ret i8* bitcast (%struct.T1* @t1 to i8*)
>>>> +;
>>>> %dst = bitcast %struct.T1* @t1 to i8*
>>>> %src = bitcast %struct.T2* @t2 to i8*
>>>> -; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i64(i8* align 4 bitcast (%struct.T1* @t1 to i8*), i8* align 4 bitcast (%struct.T2* @t2 to i8*), i64 1824, i1 false)
>>>> -; CHECK-NEXT: ret i8* bitcast (%struct.T1* @t1 to i8*)
>>>> %ret = call i8* @__memmove_chk(i8* %dst, i8* %src, i64 1824, i64 1824)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_simplify2() {
>>>> ; CHECK-LABEL: @test_simplify2(
>>>> +; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i64(i8* align 4 dereferenceable(1824) bitcast (%struct.T1* @t1 to i8*), i8* align 4 dereferenceable(1824) bitcast (%struct.T3* @t3 to i8*), i64 1824, i1 false)
>>>> +; CHECK-NEXT: ret i8* bitcast (%struct.T1* @t1 to i8*)
>>>> +;
>>>> %dst = bitcast %struct.T1* @t1 to i8*
>>>> %src = bitcast %struct.T3* @t3 to i8*
>>>> -; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i64(i8* align 4 bitcast (%struct.T1* @t1 to i8*), i8* align 4 bitcast (%struct.T3* @t3 to i8*), i64 1824, i1 false)
>>>> -; CHECK-NEXT: ret i8* bitcast (%struct.T1* @t1 to i8*)
>>>> %ret = call i8* @__memmove_chk(i8* %dst, i8* %src, i64 1824, i64 2848)
>>>> ret i8* %ret
>>>> }
>>>> @@ -41,22 +44,24 @@ define i8* @test_simplify2() {
>>>> define i8* @test_no_simplify1() {
>>>> ; CHECK-LABEL: @test_no_simplify1(
>>>> +; CHECK-NEXT: [[RET:%.*]] = call i8* @__memmove_chk(i8* bitcast (%struct.T3* @t3 to i8*), i8* bitcast (%struct.T1* @t1 to i8*), i64 2848, i64 1824)
>>>> +; CHECK-NEXT: ret i8* [[RET]]
>>>> +;
>>>> %dst = bitcast %struct.T3* @t3 to i8*
>>>> %src = bitcast %struct.T1* @t1 to i8*
>>>> -; CHECK-NEXT: %ret = call i8* @__memmove_chk(i8* bitcast (%struct.T3* @t3 to i8*), i8* bitcast (%struct.T1* @t1 to i8*), i64 2848, i64 1824)
>>>> -; CHECK-NEXT: ret i8* %ret
>>>> %ret = call i8* @__memmove_chk(i8* %dst, i8* %src, i64 2848, i64 1824)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_no_simplify2() {
>>>> ; CHECK-LABEL: @test_no_simplify2(
>>>> +; CHECK-NEXT: [[RET:%.*]] = call i8* @__memmove_chk(i8* bitcast (%struct.T1* @t1 to i8*), i8* bitcast (%struct.T2* @t2 to i8*), i64 1024, i64 0)
>>>> +; CHECK-NEXT: ret i8* [[RET]]
>>>> +;
>>>> %dst = bitcast %struct.T1* @t1 to i8*
>>>> %src = bitcast %struct.T2* @t2 to i8*
>>>> -; CHECK-NEXT: %ret = call i8* @__memmove_chk(i8* bitcast (%struct.T1* @t1 to i8*), i8* bitcast (%struct.T2* @t2 to i8*), i64 1024, i64 0)
>>>> -; CHECK-NEXT: ret i8* %ret
>>>> %ret = call i8* @__memmove_chk(i8* %dst, i8* %src, i64 1024, i64 0)
>>>> ret i8* %ret
>>>> }
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/memset_chk-1.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/memset_chk-1.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/memset_chk-1.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/memset_chk-1.ll Tue Aug 13 02:11:49 2019
>>>> @@ -1,3 +1,4 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> ; Test lib call simplification of __memset_chk calls with various values
>>>> ; for dstlen and len.
>>>> ;
>>>> @@ -13,30 +14,33 @@ target datalayout = "e-p:64:64:64-i1:8:8
>>>> define i8* @test_simplify1() {
>>>> ; CHECK-LABEL: @test_simplify1(
>>>> +; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 dereferenceable(1824) bitcast (%struct.T* @t to i8*), i8 0, i64 1824, i1 false)
>>>> +; CHECK-NEXT: ret i8* bitcast (%struct.T* @t to i8*)
>>>> +;
>>>> %dst = bitcast %struct.T* @t to i8*
>>>> -; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 bitcast (%struct.T* @t to i8*), i8 0, i64 1824, i1 false)
>>>> -; CHECK-NEXT: ret i8* bitcast (%struct.T* @t to i8*)
>>>> %ret = call i8* @__memset_chk(i8* %dst, i32 0, i64 1824, i64 1824)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_simplify2() {
>>>> ; CHECK-LABEL: @test_simplify2(
>>>> +; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 dereferenceable(1824) bitcast (%struct.T* @t to i8*), i8 0, i64 1824, i1 false)
>>>> +; CHECK-NEXT: ret i8* bitcast (%struct.T* @t to i8*)
>>>> +;
>>>> %dst = bitcast %struct.T* @t to i8*
>>>> -; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 bitcast (%struct.T* @t to i8*), i8 0, i64 1824, i1 false)
>>>> -; CHECK-NEXT: ret i8* bitcast (%struct.T* @t to i8*)
>>>> %ret = call i8* @__memset_chk(i8* %dst, i32 0, i64 1824, i64 3648)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_simplify3() {
>>>> ; CHECK-LABEL: @test_simplify3(
>>>> +; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 dereferenceable(1824) bitcast (%struct.T* @t to i8*), i8 0, i64 1824, i1 false)
>>>> +; CHECK-NEXT: ret i8* bitcast (%struct.T* @t to i8*)
>>>> +;
>>>> %dst = bitcast %struct.T* @t to i8*
>>>> -; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 bitcast (%struct.T* @t to i8*), i8 0, i64 1824, i1 false)
>>>> -; CHECK-NEXT: ret i8* bitcast (%struct.T* @t to i8*)
>>>> %ret = call i8* @__memset_chk(i8* %dst, i32 0, i64 1824, i64 -1)
>>>> ret i8* %ret
>>>> }
>>>> @@ -45,41 +49,55 @@ define i8* @test_simplify3() {
>>>> define i8* @test_no_simplify1() {
>>>> ; CHECK-LABEL: @test_no_simplify1(
>>>> +; CHECK-NEXT: [[RET:%.*]] = call i8* @__memset_chk(i8* bitcast (%struct.T* @t to i8*), i32 0, i64 1824, i64 400)
>>>> +; CHECK-NEXT: ret i8* [[RET]]
>>>> +;
>>>> %dst = bitcast %struct.T* @t to i8*
>>>> -; CHECK-NEXT: %ret = call i8* @__memset_chk(i8* bitcast (%struct.T* @t to i8*), i32 0, i64 1824, i64 400)
>>>> -; CHECK-NEXT: ret i8* %ret
>>>> %ret = call i8* @__memset_chk(i8* %dst, i32 0, i64 1824, i64 400)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_no_simplify2() {
>>>> ; CHECK-LABEL: @test_no_simplify2(
>>>> +; CHECK-NEXT: [[RET:%.*]] = call i8* @__memset_chk(i8* bitcast (%struct.T* @t to i8*), i32 0, i64 1824, i64 0)
>>>> +; CHECK-NEXT: ret i8* [[RET]]
>>>> +;
>>>> %dst = bitcast %struct.T* @t to i8*
>>>> -; CHECK-NEXT: %ret = call i8* @__memset_chk(i8* bitcast (%struct.T* @t to i8*), i32 0, i64 1824, i64 0)
>>>> -; CHECK-NEXT: ret i8* %ret
>>>> %ret = call i8* @__memset_chk(i8* %dst, i32 0, i64 1824, i64 0)
>>>> ret i8* %ret
>>>> }
>>>> ; Test that RAUW in SimplifyLibCalls for __memset_chk generates valid IR
>>>> define i32 @test_rauw(i8* %a, i8* %b, i8** %c) {
>>>> -; CHECK-LABEL: test_rauw
>>>> +; CHECK-LABEL: @test_rauw(
>>>> +; CHECK-NEXT: entry:
>>>> +; CHECK-NEXT: [[CALL49:%.*]] = call i64 @strlen(i8* [[A:%.*]])
>>>> +; CHECK-NEXT: [[ADD180:%.*]] = add i64 [[CALL49]], 1
>>>> +; CHECK-NEXT: [[YO107:%.*]] = call i64 @llvm.objectsize.i64.p0i8(i8* [[B:%.*]], i1 false, i1 false, i1 false)
>>>> +; CHECK-NEXT: [[CALL50:%.*]] = call i8* @__memmove_chk(i8* [[B]], i8* [[A]], i64 [[ADD180]], i64 [[YO107]])
>>>> +; CHECK-NEXT: [[STRLEN:%.*]] = call i64 @strlen(i8* [[B]])
>>>> +; CHECK-NEXT: [[STRCHR2:%.*]] = getelementptr i8, i8* [[B]], i64 [[STRLEN]]
>>>> +; CHECK-NEXT: [[TMP0:%.*]] = bitcast i8** [[C:%.*]] to i64*
>>>> +; CHECK-NEXT: [[D1:%.*]] = load i64, i64* [[TMP0]], align 8
>>>> +; CHECK-NEXT: [[SUB183:%.*]] = ptrtoint i8* [[B]] to i64
>>>> +; CHECK-NEXT: [[SUB184:%.*]] = sub i64 [[D1]], [[SUB183]]
>>>> +; CHECK-NEXT: [[ADD52_I_I:%.*]] = add nsw i64 [[SUB184]], 1
>>>> +; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 1 [[STRCHR2]], i8 0, i64 [[ADD52_I_I]], i1 false)
>>>> +; CHECK-NEXT: ret i32 4
>>>> +;
>>>> entry:
>>>> %call49 = call i64 @strlen(i8* %a)
>>>> %add180 = add i64 %call49, 1
>>>> %yo107 = call i64 @llvm.objectsize.i64.p0i8(i8* %b, i1 false, i1 false, i1 false)
>>>> %call50 = call i8* @__memmove_chk(i8* %b, i8* %a, i64 %add180, i64 %yo107)
>>>> -; CHECK: %strlen = call i64 @strlen(i8* %b)
>>>> -; CHECK-NEXT: %strchr2 = getelementptr i8, i8* %b, i64 %strlen
>>>> %call51i = call i8* @strrchr(i8* %b, i32 0)
>>>> %d = load i8*, i8** %c, align 8
>>>> %sub182 = ptrtoint i8* %d to i64
>>>> %sub183 = ptrtoint i8* %b to i64
>>>> %sub184 = sub i64 %sub182, %sub183
>>>> %add52.i.i = add nsw i64 %sub184, 1
>>>> -; CHECK: call void @llvm.memset.p0i8.i64(i8* align 1 %strchr2
>>>> %call185 = call i8* @__memset_chk(i8* %call51i, i32 0, i64 %add52.i.i, i64 -1)
>>>> ret i32 4
>>>> }
>>>> @@ -94,6 +112,20 @@ declare i8* @__memset_chk(i8*, i32, i64,
>>>> ; FIXME: memset(malloc(x), 0, x) -> calloc(1, x)
>>>> define float* @pr25892(i64 %size) #0 {
>>>> +; CHECK-LABEL: @pr25892(
>>>> +; CHECK-NEXT: entry:
>>>> +; CHECK-NEXT: [[CALL:%.*]] = tail call i8* @malloc(i64 [[SIZE:%.*]]) #3
>>>> +; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8* [[CALL]], null
>>>> +; CHECK-NEXT: br i1 [[CMP]], label [[CLEANUP:%.*]], label [[IF_END:%.*]]
>>>> +; CHECK: if.end:
>>>> +; CHECK-NEXT: [[BC:%.*]] = bitcast i8* [[CALL]] to float*
>>>> +; CHECK-NEXT: [[CALL2:%.*]] = tail call i64 @llvm.objectsize.i64.p0i8(i8* nonnull [[CALL]], i1 false, i1 false, i1 false)
>>>> +; CHECK-NEXT: [[CALL3:%.*]] = tail call i8* @__memset_chk(i8* nonnull [[CALL]], i32 0, i64 [[SIZE]], i64 [[CALL2]]) #3
>>>> +; CHECK-NEXT: br label [[CLEANUP]]
>>>> +; CHECK: cleanup:
>>>> +; CHECK-NEXT: [[RETVAL_0:%.*]] = phi float* [ [[BC]], [[IF_END]] ], [ null, [[ENTRY:%.*]] ]
>>>> +; CHECK-NEXT: ret float* [[RETVAL_0]]
>>>> +;
>>>> entry:
>>>> %call = tail call i8* @malloc(i64 %size) #1
>>>> %cmp = icmp eq i8* %call, null
>>>> @@ -107,19 +139,6 @@ cleanup:
>>>> %retval.0 = phi float* [ %bc, %if.end ], [ null, %entry ]
>>>> ret float* %retval.0
>>>> -; CHECK-LABEL: @pr25892(
>>>> -; CHECK: entry:
>>>> -; CHECK-NEXT: %call = tail call i8* @malloc(i64 %size)
>>>> -; CHECK-NEXT: %cmp = icmp eq i8* %call, null
>>>> -; CHECK-NEXT: br i1 %cmp, label %cleanup, label %if.end
>>>> -; CHECK: if.end:
>>>> -; CHECK-NEXT: %bc = bitcast i8* %call to float*
>>>> -; CHECK-NEXT: %call2 = tail call i64 @llvm.objectsize.i64.p0i8(i8* nonnull %call, i1 false, i1 false, i1 false)
>>>> -; CHECK-NEXT: %call3 = tail call i8* @__memset_chk(i8* nonnull %call, i32 0, i64 %size, i64 %call2)
>>>> -; CHECK-NEXT: br label %cleanup
>>>> -; CHECK: cleanup:
>>>> -; CHECK-NEXT: %retval.0 = phi float* [ %bc, %if.end ], [ null, %entry ]
>>>> -; CHECK-NEXT: ret float* %retval.0
>>>> }
>>>> declare noalias i8* @malloc(i64) #1
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/objsize.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/objsize.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/objsize.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/objsize.ll Tue Aug 13 02:11:49 2019
>>>> @@ -1,3 +1,4 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> ; Test a pile of objectsize bounds checking.
>>>> ; RUN: opt < %s -instcombine -S | FileCheck %s
>>>> ; We need target data to get the sizes of the arrays and structures.
>>>> @@ -7,18 +8,27 @@ target datalayout = "e-p:32:32:32-i1:8:8
>>>> @.str = private constant [8 x i8] c"abcdefg\00" ; <[8 x i8]*>
>>>> define i32 @foo() nounwind {
>>>> ; CHECK-LABEL: @foo(
>>>> -; CHECK-NEXT: ret i32 60
>>>> +; CHECK-NEXT: ret i32 60
>>>> +;
>>>> %1 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
>>>> ret i32 %1
>>>> }
>>>> define i8* @bar() nounwind {
>>>> ; CHECK-LABEL: @bar(
>>>> +; CHECK-NEXT: entry:
>>>> +; CHECK-NEXT: [[RETVAL:%.*]] = alloca i8*, align 4
>>>> +; CHECK-NEXT: br i1 true, label [[COND_TRUE:%.*]], label [[COND_FALSE:%.*]]
>>>> +; CHECK: cond.true:
>>>> +; CHECK-NEXT: [[TMP0:%.*]] = load i8*, i8** [[RETVAL]], align 4
>>>> +; CHECK-NEXT: ret i8* [[TMP0]]
>>>> +; CHECK: cond.false:
>>>> +; CHECK-NEXT: ret i8* undef
>>>> +;
>>>> entry:
>>>> %retval = alloca i8*
>>>> %0 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
>>>> %cmp = icmp ne i32 %0, -1
>>>> -; CHECK: br i1 true
>>>> br i1 %cmp, label %cond.true, label %cond.false
>>>> cond.true:
>>>> @@ -32,7 +42,8 @@ cond.false:
>>>> define i32 @f() nounwind {
>>>> ; CHECK-LABEL: @f(
>>>> -; CHECK-NEXT: ret i32 0
>>>> +; CHECK-NEXT: ret i32 0
>>>> +;
>>>> %1 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr ([60 x i8], [60 x i8]* @a, i32 1, i32 0), i1 false, i1 false, i1 false)
>>>> ret i32 %1
>>>> }
>>>> @@ -41,7 +52,10 @@ define i32 @f() nounwind {
>>>> define i1 @baz() nounwind {
>>>> ; CHECK-LABEL: @baz(
>>>> -; CHECK-NEXT: objectsize
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = tail call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([0 x i8], [0 x i8]* @window, i32 0, i32 0), i1 false, i1 false, i1 false)
>>>> +; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP1]], -1
>>>> +; CHECK-NEXT: ret i1 [[TMP2]]
>>>> +;
>>>> %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([0 x i8], [0 x i8]* @window, i32 0, i32 0), i1 false, i1 false, i1 false)
>>>> %2 = icmp eq i32 %1, -1
>>>> ret i1 %2
>>>> @@ -49,7 +63,15 @@ define i1 @baz() nounwind {
>>>> define void @test1(i8* %q, i32 %x) nounwind noinline {
>>>> ; CHECK-LABEL: @test1(
>>>> -; CHECK: objectsize.i32.p0i8
>>>> +; CHECK-NEXT: entry:
>>>> +; CHECK-NEXT: [[TMP0:%.*]] = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([0 x i8], [0 x i8]* @window, i32 0, i32 10), i1 false, i1 false, i1 false)
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i32 [[TMP0]], -1
>>>> +; CHECK-NEXT: br i1 [[TMP1]], label %"47", label %"46"
>>>> +; CHECK: "46":
>>>> +; CHECK-NEXT: unreachable
>>>> +; CHECK: "47":
>>>> +; CHECK-NEXT: unreachable
>>>> +;
>>>> entry:
>>>> %0 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([0 x i8], [0 x i8]* @window, i32 0, i32 10), i1 false, i1 false, i1 false) ; <i64> [#uses=1]
>>>> %1 = icmp eq i32 %0, -1 ; <i1> [#uses=1]
>>>> @@ -66,7 +88,8 @@ entry:
>>>> 101, i32 102, i32 103, i32 0], align 4
>>>> define i32 @test2() nounwind {
>>>> ; CHECK-LABEL: @test2(
>>>> -; CHECK-NEXT: ret i32 34
>>>> +; CHECK-NEXT: ret i32 34
>>>> +;
>>>> %1 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr (i8, i8* bitcast ([9 x i32]* @.str5 to i8*), i32 2), i1 false, i1 false, i1 false)
>>>> ret i32 %1
>>>> }
>>>> @@ -84,6 +107,14 @@ declare i8* @__inline_memcpy_chk(i8*, i8
>>>> define void @test3() nounwind {
>>>> ; CHECK-LABEL: @test3(
>>>> +; CHECK-NEXT: entry:
>>>> +; CHECK-NEXT: br i1 undef, label [[BB11:%.*]], label [[BB12:%.*]]
>>>> +; CHECK: bb11:
>>>> +; CHECK-NEXT: unreachable
>>>> +; CHECK: bb12:
>>>> +; CHECK-NEXT: [[TMP0:%.*]] = call i8* @__inline_memcpy_chk(i8* bitcast (float* getelementptr inbounds ([480 x float], [480 x float]* @array, i32 0, i32 1) to i8*), i8* undef, i32 512) #3
>>>> +; CHECK-NEXT: unreachable
>>>> +;
>>>> entry:
>>>> br i1 undef, label %bb11, label %bb12
>>>> @@ -92,14 +123,12 @@ bb11:
>>>> %1 = bitcast float* %0 to i8* ; <i8*> [#uses=1]
>>>> %2 = call i32 @llvm.objectsize.i32.p0i8(i8* %1, i1 false, i1 false, i1 false) ; <i32> [#uses=1]
>>>> %3 = call i8* @__memcpy_chk(i8* undef, i8* undef, i32 512, i32 %2) nounwind ; <i8*> [#uses=0]
>>>> -; CHECK: unreachable
>>>> unreachable
>>>> bb12:
>>>> %4 = getelementptr inbounds float, float* getelementptr inbounds ([480 x float], [480 x float]* @array, i32 0, i32 128), i32 -127 ; <float*> [#uses=1]
>>>> %5 = bitcast float* %4 to i8* ; <i8*> [#uses=1]
>>>> %6 = call i8* @__inline_memcpy_chk(i8* %5, i8* undef, i32 512) nounwind inlinehint ; <i8*> [#uses=0]
>>>> -; CHECK: @__inline_memcpy_chk
>>>> unreachable
>>>> }
>>>> @@ -109,12 +138,18 @@ bb12:
>>>> define i32 @test4(i8** %esc) nounwind ssp {
>>>> ; CHECK-LABEL: @test4(
>>>> +; CHECK-NEXT: entry:
>>>> +; CHECK-NEXT: [[TMP0:%.*]] = alloca [[STRUCT_DATA:%.*]], align 8
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = bitcast %struct.data* [[TMP0]] to i8*
>>>> +; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* nonnull align 8 dereferenceable(1824) [[TMP1]], i8 0, i32 1824, i1 false)
>>>> +; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8** [[ESC:%.*]] to %struct.data**
>>>> +; CHECK-NEXT: store %struct.data* [[TMP0]], %struct.data** [[TMP2]], align 4
>>>> +; CHECK-NEXT: ret i32 0
>>>> +;
>>>> entry:
>>>> %0 = alloca %struct.data, align 8
>>>> %1 = bitcast %struct.data* %0 to i8*
>>>> %2 = call i32 @llvm.objectsize.i32.p0i8(i8* %1, i1 false, i1 false, i1 false) nounwind
>>>> -; CHECK-NOT: @llvm.objectsize
>>>> -; CHECK: @llvm.memset.p0i8.i32(i8* nonnull align 8 %1, i8 0, i32 1824, i1 false)
>>>> %3 = call i8* @__memset_chk(i8* %1, i32 0, i32 1824, i32 %2) nounwind
>>>> store i8* %1, i8** %esc
>>>> ret i32 0
>>>> @@ -125,24 +160,32 @@ entry:
>>>> define i8* @test5(i32 %n) nounwind ssp {
>>>> ; CHECK-LABEL: @test5(
>>>> +; CHECK-NEXT: entry:
>>>> +; CHECK-NEXT: [[TMP0:%.*]] = tail call noalias i8* @malloc(i32 20) #0
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = load i8*, i8** @s, align 8
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 dereferenceable(10) [[TMP0]], i8* align 1 dereferenceable(10) [[TMP1]], i32 10, i1 false)
>>>> +; CHECK-NEXT: ret i8* [[TMP0]]
>>>> +;
>>>> entry:
>>>> %0 = tail call noalias i8* @malloc(i32 20) nounwind
>>>> %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %0, i1 false, i1 false, i1 false)
>>>> %2 = load i8*, i8** @s, align 8
>>>> -; CHECK-NOT: @llvm.objectsize
>>>> -; CHECK: @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %0, i8* align 1 %1, i32 10, i1 false)
>>>> %3 = tail call i8* @__memcpy_chk(i8* %0, i8* %2, i32 10, i32 %1) nounwind
>>>> ret i8* %0
>>>> }
>>>> define void @test6(i32 %n) nounwind ssp {
>>>> ; CHECK-LABEL: @test6(
>>>> +; CHECK-NEXT: entry:
>>>> +; CHECK-NEXT: [[TMP0:%.*]] = tail call noalias i8* @malloc(i32 20) #0
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = load i8*, i8** @s, align 8
>>>> +; CHECK-NEXT: [[TMP2:%.*]] = tail call i8* @__memcpy_chk(i8* [[TMP0]], i8* [[TMP1]], i32 30, i32 20) #0
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> entry:
>>>> %0 = tail call noalias i8* @malloc(i32 20) nounwind
>>>> %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %0, i1 false, i1 false, i1 false)
>>>> %2 = load i8*, i8** @s, align 8
>>>> -; CHECK-NOT: @llvm.objectsize
>>>> -; CHECK: @__memcpy_chk(i8* %0, i8* %1, i32 30, i32 20)
>>>> %3 = tail call i8* @__memcpy_chk(i8* %0, i8* %2, i32 30, i32 %1) nounwind
>>>> ret void
>>>> }
>>>> @@ -153,11 +196,14 @@ declare noalias i8* @malloc(i32) nounwin
>>>> define i32 @test7(i8** %esc) {
>>>> ; CHECK-LABEL: @test7(
>>>> +; CHECK-NEXT: [[ALLOC:%.*]] = call noalias i8* @malloc(i32 48) #0
>>>> +; CHECK-NEXT: store i8* [[ALLOC]], i8** [[ESC:%.*]], align 4
>>>> +; CHECK-NEXT: ret i32 32
>>>> +;
>>>> %alloc = call noalias i8* @malloc(i32 48) nounwind
>>>> store i8* %alloc, i8** %esc
>>>> %gep = getelementptr inbounds i8, i8* %alloc, i32 16
>>>> %objsize = call i32 @llvm.objectsize.i32.p0i8(i8* %gep, i1 false, i1 false, i1 false) nounwind readonly
>>>> -; CHECK: ret i32 32
>>>> ret i32 %objsize
>>>> }
>>>> @@ -165,67 +211,86 @@ declare noalias i8* @calloc(i32, i32) no
>>>> define i32 @test8(i8** %esc) {
>>>> ; CHECK-LABEL: @test8(
>>>> +; CHECK-NEXT: [[ALLOC:%.*]] = call noalias i8* @calloc(i32 5, i32 7) #0
>>>> +; CHECK-NEXT: store i8* [[ALLOC]], i8** [[ESC:%.*]], align 4
>>>> +; CHECK-NEXT: ret i32 30
>>>> +;
>>>> %alloc = call noalias i8* @calloc(i32 5, i32 7) nounwind
>>>> store i8* %alloc, i8** %esc
>>>> %gep = getelementptr inbounds i8, i8* %alloc, i32 5
>>>> %objsize = call i32 @llvm.objectsize.i32.p0i8(i8* %gep, i1 false, i1 false, i1 false) nounwind readonly
>>>> -; CHECK: ret i32 30
>>>> ret i32 %objsize
>>>> }
>>>> declare noalias i8* @strdup(i8* nocapture) nounwind
>>>> declare noalias i8* @strndup(i8* nocapture, i32) nounwind
>>>> -; CHECK-LABEL: @test9(
>>>> define i32 @test9(i8** %esc) {
>>>> +; CHECK-LABEL: @test9(
>>>> +; CHECK-NEXT: [[CALL:%.*]] = tail call i8* @strdup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i32 0, i32 0)) #0
>>>> +; CHECK-NEXT: store i8* [[CALL]], i8** [[ESC:%.*]], align 8
>>>> +; CHECK-NEXT: ret i32 8
>>>> +;
>>>> %call = tail call i8* @strdup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0)) nounwind
>>>> store i8* %call, i8** %esc, align 8
>>>> %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
>>>> -; CHECK: ret i32 8
>>>> ret i32 %1
>>>> }
>>>> -; CHECK-LABEL: @test10(
>>>> define i32 @test10(i8** %esc) {
>>>> +; CHECK-LABEL: @test10(
>>>> +; CHECK-NEXT: [[CALL:%.*]] = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i32 0, i32 0), i32 3) #0
>>>> +; CHECK-NEXT: store i8* [[CALL]], i8** [[ESC:%.*]], align 8
>>>> +; CHECK-NEXT: ret i32 4
>>>> +;
>>>> %call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 3) nounwind
>>>> store i8* %call, i8** %esc, align 8
>>>> %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
>>>> -; CHECK: ret i32 4
>>>> ret i32 %1
>>>> }
>>>> -; CHECK-LABEL: @test11(
>>>> define i32 @test11(i8** %esc) {
>>>> +; CHECK-LABEL: @test11(
>>>> +; CHECK-NEXT: [[CALL:%.*]] = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i32 0, i32 0), i32 7) #0
>>>> +; CHECK-NEXT: store i8* [[CALL]], i8** [[ESC:%.*]], align 8
>>>> +; CHECK-NEXT: ret i32 8
>>>> +;
>>>> %call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 7) nounwind
>>>> store i8* %call, i8** %esc, align 8
>>>> %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
>>>> -; CHECK: ret i32 8
>>>> ret i32 %1
>>>> }
>>>> -; CHECK-LABEL: @test12(
>>>> define i32 @test12(i8** %esc) {
>>>> +; CHECK-LABEL: @test12(
>>>> +; CHECK-NEXT: [[CALL:%.*]] = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i32 0, i32 0), i32 8) #0
>>>> +; CHECK-NEXT: store i8* [[CALL]], i8** [[ESC:%.*]], align 8
>>>> +; CHECK-NEXT: ret i32 8
>>>> +;
>>>> %call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 8) nounwind
>>>> store i8* %call, i8** %esc, align 8
>>>> %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
>>>> -; CHECK: ret i32 8
>>>> ret i32 %1
>>>> }
>>>> -; CHECK-LABEL: @test13(
>>>> define i32 @test13(i8** %esc) {
>>>> +; CHECK-LABEL: @test13(
>>>> +; CHECK-NEXT: [[CALL:%.*]] = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i32 0, i32 0), i32 57) #0
>>>> +; CHECK-NEXT: store i8* [[CALL]], i8** [[ESC:%.*]], align 8
>>>> +; CHECK-NEXT: ret i32 8
>>>> +;
>>>> %call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 57) nounwind
>>>> store i8* %call, i8** %esc, align 8
>>>> %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
>>>> -; CHECK: ret i32 8
>>>> ret i32 %1
>>>> }
>>>> @globalalias = internal alias [60 x i8], [60 x i8]* @a
>>>> -; CHECK-LABEL: @test18(
>>>> -; CHECK-NEXT: ret i32 60
>>>> define i32 @test18() {
>>>> +; CHECK-LABEL: @test18(
>>>> +; CHECK-NEXT: ret i32 60
>>>> +;
>>>> %bc = bitcast [60 x i8]* @globalalias to i8*
>>>> %1 = call i32 @llvm.objectsize.i32.p0i8(i8* %bc, i1 false, i1 false, i1 false)
>>>> ret i32 %1
>>>> @@ -233,71 +298,87 @@ define i32 @test18() {
>>>> @globalalias2 = weak alias [60 x i8], [60 x i8]* @a
>>>> -; CHECK-LABEL: @test19(
>>>> -; CHECK: llvm.objectsize
>>>> define i32 @test19() {
>>>> +; CHECK-LABEL: @test19(
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @globalalias2, i32 0, i32 0), i1 false, i1 false, i1 false)
>>>> +; CHECK-NEXT: ret i32 [[TMP1]]
>>>> +;
>>>> %bc = bitcast [60 x i8]* @globalalias2 to i8*
>>>> %1 = call i32 @llvm.objectsize.i32.p0i8(i8* %bc, i1 false, i1 false, i1 false)
>>>> ret i32 %1
>>>> }
>>>> -; CHECK-LABEL: @test20(
>>>> -; CHECK: ret i32 0
>>>> define i32 @test20() {
>>>> +; CHECK-LABEL: @test20(
>>>> +; CHECK-NEXT: ret i32 0
>>>> +;
>>>> %1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 false, i1 false, i1 false)
>>>> ret i32 %1
>>>> }
>>>> -; CHECK-LABEL: @test21(
>>>> -; CHECK: ret i32 0
>>>> define i32 @test21() {
>>>> +; CHECK-LABEL: @test21(
>>>> +; CHECK-NEXT: ret i32 0
>>>> +;
>>>> %1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 true, i1 false, i1 false)
>>>> ret i32 %1
>>>> }
>>>> -; CHECK-LABEL: @test22(
>>>> -; CHECK: llvm.objectsize
>>>> define i32 @test22() {
>>>> +; CHECK-LABEL: @test22(
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 false, i1 true, i1 false)
>>>> +; CHECK-NEXT: ret i32 [[TMP1]]
>>>> +;
>>>> %1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 false, i1 true, i1 false)
>>>> ret i32 %1
>>>> }
>>>> -; CHECK-LABEL: @test23(
>>>> -; CHECK: llvm.objectsize
>>>> define i32 @test23() {
>>>> +; CHECK-LABEL: @test23(
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 true, i1 true, i1 false)
>>>> +; CHECK-NEXT: ret i32 [[TMP1]]
>>>> +;
>>>> %1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 true, i1 true, i1 false)
>>>> ret i32 %1
>>>> }
>>>> ; 1 is an arbitrary non-zero address space.
>>>> -; CHECK-LABEL: @test24(
>>>> -; CHECK: llvm.objectsize
>>>> define i32 @test24() {
>>>> +; CHECK-LABEL: @test24(
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 false, i1 false, i1 false)
>>>> +; CHECK-NEXT: ret i32 [[TMP1]]
>>>> +;
>>>> %1 = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 false,
>>>> - i1 false, i1 false)
>>>> + i1 false, i1 false)
>>>> ret i32 %1
>>>> }
>>>> -; CHECK-LABEL: @test25(
>>>> -; CHECK: llvm.objectsize
>>>> define i32 @test25() {
>>>> +; CHECK-LABEL: @test25(
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 true, i1 false, i1 false)
>>>> +; CHECK-NEXT: ret i32 [[TMP1]]
>>>> +;
>>>> %1 = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 true,
>>>> - i1 false, i1 false)
>>>> + i1 false, i1 false)
>>>> ret i32 %1
>>>> }
>>>> -; CHECK-LABEL: @test26(
>>>> -; CHECK: llvm.objectsize
>>>> define i32 @test26() {
>>>> +; CHECK-LABEL: @test26(
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 false, i1 true, i1 false)
>>>> +; CHECK-NEXT: ret i32 [[TMP1]]
>>>> +;
>>>> %1 = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 false,
>>>> - i1 true, i1 false)
>>>> + i1 true, i1 false)
>>>> ret i32 %1
>>>> }
>>>> -; CHECK-LABEL: @test27(
>>>> -; CHECK: llvm.objectsize
>>>> define i32 @test27() {
>>>> +; CHECK-LABEL: @test27(
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 true, i1 true, i1 false)
>>>> +; CHECK-NEXT: ret i32 [[TMP1]]
>>>> +;
>>>> %1 = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 true,
>>>> - i1 true, i1 false)
>>>> + i1 true, i1 false)
>>>> ret i32 %1
>>>> }
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/sprintf-1.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/sprintf-1.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/sprintf-1.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/sprintf-1.ll Tue Aug 13 02:11:49 2019
>>>> @@ -1,3 +1,4 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> ; Test that the sprintf library call simplifier works correctly.
>>>> ;
>>>> ; RUN: opt < %s -instcombine -S | FileCheck %s
>>>> @@ -20,81 +21,125 @@ declare i32 @sprintf(i8*, i8*, ...)
>>>> define void @test_simplify1(i8* %dst) {
>>>> ; CHECK-LABEL: @test_simplify1(
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 dereferenceable(13) [[DST:%.*]], i8* align 1 dereferenceable(13) getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0), i32 13, i1 false)
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> +; CHECK-IPRINTF-LABEL: @test_simplify1(
>>>> +; CHECK-IPRINTF-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 dereferenceable(13) [[DST:%.*]], i8* align 1 dereferenceable(13) getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0), i32 13, i1 false)
>>>> +; CHECK-IPRINTF-NEXT: ret void
>>>> +;
>>>> %fmt = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0
>>>> call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt)
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %dst, i8* align 1 getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0), i32 13, i1 false)
>>>> ret void
>>>> -; CHECK-NEXT: ret void
>>>> }
>>>> define void @test_simplify2(i8* %dst) {
>>>> ; CHECK-LABEL: @test_simplify2(
>>>> +; CHECK-NEXT: store i8 0, i8* [[DST:%.*]], align 1
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> +; CHECK-IPRINTF-LABEL: @test_simplify2(
>>>> +; CHECK-IPRINTF-NEXT: store i8 0, i8* [[DST:%.*]], align 1
>>>> +; CHECK-IPRINTF-NEXT: ret void
>>>> +;
>>>> %fmt = getelementptr [1 x i8], [1 x i8]* @null, i32 0, i32 0
>>>> call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt)
>>>> -; CHECK-NEXT: store i8 0, i8* %dst, align 1
>>>> ret void
>>>> -; CHECK-NEXT: ret void
>>>> }
>>>> define void @test_simplify3(i8* %dst) {
>>>> ; CHECK-LABEL: @test_simplify3(
>>>> +; CHECK-NEXT: store i8 0, i8* [[DST:%.*]], align 1
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> +; CHECK-IPRINTF-LABEL: @test_simplify3(
>>>> +; CHECK-IPRINTF-NEXT: store i8 0, i8* [[DST:%.*]], align 1
>>>> +; CHECK-IPRINTF-NEXT: ret void
>>>> +;
>>>> %fmt = getelementptr [7 x i8], [7 x i8]* @null_hello, i32 0, i32 0
>>>> call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt)
>>>> -; CHECK-NEXT: store i8 0, i8* %dst, align 1
>>>> ret void
>>>> -; CHECK-NEXT: ret void
>>>> }
>>>> ; Check sprintf(dst, "%c", chr) -> *(i8*)dst = chr; *((i8*)dst + 1) = 0.
>>>> define void @test_simplify4(i8* %dst) {
>>>> ; CHECK-LABEL: @test_simplify4(
>>>> +; CHECK-NEXT: store i8 104, i8* [[DST:%.*]], align 1
>>>> +; CHECK-NEXT: [[NUL:%.*]] = getelementptr i8, i8* [[DST]], i32 1
>>>> +; CHECK-NEXT: store i8 0, i8* [[NUL]], align 1
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> +; CHECK-IPRINTF-LABEL: @test_simplify4(
>>>> +; CHECK-IPRINTF-NEXT: store i8 104, i8* [[DST:%.*]], align 1
>>>> +; CHECK-IPRINTF-NEXT: [[NUL:%.*]] = getelementptr i8, i8* [[DST]], i32 1
>>>> +; CHECK-IPRINTF-NEXT: store i8 0, i8* [[NUL]], align 1
>>>> +; CHECK-IPRINTF-NEXT: ret void
>>>> +;
>>>> %fmt = getelementptr [3 x i8], [3 x i8]* @percent_c, i32 0, i32 0
>>>> call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8 104)
>>>> -; CHECK-NEXT: store i8 104, i8* %dst, align 1
>>>> -; CHECK-NEXT: [[NUL:%[a-z0-9]+]] = getelementptr i8, i8* %dst, i32 1
>>>> -; CHECK-NEXT: store i8 0, i8* [[NUL]], align 1
>>>> ret void
>>>> -; CHECK-NEXT: ret void
>>>> }
>>>> ; Check sprintf(dst, "%s", str) -> llvm.memcpy(dest, str, strlen(str) + 1, 1).
>>>> define void @test_simplify5(i8* %dst, i8* %str) {
>>>> ; CHECK-LABEL: @test_simplify5(
>>>> +; CHECK-NEXT: [[STRLEN:%.*]] = call i32 @strlen(i8* [[STR:%.*]])
>>>> +; CHECK-NEXT: [[LENINC:%.*]] = add i32 [[STRLEN]], 1
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 [[DST:%.*]], i8* align 1 [[STR]], i32 [[LENINC]], i1 false)
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> +; CHECK-IPRINTF-LABEL: @test_simplify5(
>>>> +; CHECK-IPRINTF-NEXT: [[STRLEN:%.*]] = call i32 @strlen(i8* [[STR:%.*]])
>>>> +; CHECK-IPRINTF-NEXT: [[LENINC:%.*]] = add i32 [[STRLEN]], 1
>>>> +; CHECK-IPRINTF-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 [[DST:%.*]], i8* align 1 [[STR]], i32 [[LENINC]], i1 false)
>>>> +; CHECK-IPRINTF-NEXT: ret void
>>>> +;
>>>> %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0
>>>> call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str)
>>>> -; CHECK-NEXT: [[STRLEN:%[a-z0-9]+]] = call i32 @strlen(i8* %str)
>>>> -; CHECK-NEXT: [[LENINC:%[a-z0-9]+]] = add i32 [[STRLEN]], 1
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %dst, i8* align 1 %str, i32 [[LENINC]], i1 false)
>>>> ret void
>>>> -; CHECK-NEXT: ret void
>>>> }
>>>> ; Check sprintf(dst, format, ...) -> siprintf(str, format, ...) if no floating.
>>>> define void @test_simplify6(i8* %dst) {
>>>> +; CHECK-LABEL: @test_simplify6(
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* [[DST:%.*]], i8* getelementptr inbounds ([3 x i8], [3 x i8]* @percent_d, i32 0, i32 0), i32 187)
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> ; CHECK-IPRINTF-LABEL: @test_simplify6(
>>>> +; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @siprintf(i8* [[DST:%.*]], i8* getelementptr inbounds ([3 x i8], [3 x i8]* @percent_d, i32 0, i32 0), i32 187)
>>>> +; CHECK-IPRINTF-NEXT: ret void
>>>> +;
>>>> %fmt = getelementptr [3 x i8], [3 x i8]* @percent_d, i32 0, i32 0
>>>> call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i32 187)
>>>> -; CHECK-IPRINTF-NEXT: call i32 (i8*, i8*, ...) @siprintf(i8* %dst, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @percent_d, i32 0, i32 0), i32 187)
>>>> ret void
>>>> -; CHECK-IPRINTF-NEXT: ret void
>>>> }
>>>> define void @test_no_simplify1(i8* %dst) {
>>>> +; CHECK-LABEL: @test_no_simplify1(
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* [[DST:%.*]], i8* getelementptr inbounds ([3 x i8], [3 x i8]* @percent_f, i32 0, i32 0), double 1.870000e+00)
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> ; CHECK-IPRINTF-LABEL: @test_no_simplify1(
>>>> +; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* [[DST:%.*]], i8* getelementptr inbounds ([3 x i8], [3 x i8]* @percent_f, i32 0, i32 0), double 1.870000e+00)
>>>> +; CHECK-IPRINTF-NEXT: ret void
>>>> +;
>>>> %fmt = getelementptr [3 x i8], [3 x i8]* @percent_f, i32 0, i32 0
>>>> call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, double 1.87)
>>>> -; CHECK-IPRINTF-NEXT: call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @percent_f, i32 0, i32 0), double 1.870000e+00)
>>>> ret void
>>>> -; CHECK-IPRINTF-NEXT: ret void
>>>> }
>>>> define void @test_no_simplify2(i8* %dst, i8* %fmt, double %d) {
>>>> ; CHECK-LABEL: @test_no_simplify2(
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* [[DST:%.*]], i8* [[FMT:%.*]], double [[D:%.*]])
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> +; CHECK-IPRINTF-LABEL: @test_no_simplify2(
>>>> +; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* [[DST:%.*]], i8* [[FMT:%.*]], double [[D:%.*]])
>>>> +; CHECK-IPRINTF-NEXT: ret void
>>>> +;
>>>> call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, double %d)
>>>> -; CHECK-NEXT: call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, double %d)
>>>> ret void
>>>> -; CHECK-NEXT: ret void
>>>> }
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/stpcpy_chk-1.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/stpcpy_chk-1.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/stpcpy_chk-1.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/stpcpy_chk-1.ll Tue Aug 13 02:11:49 2019
>>>> @@ -1,3 +1,4 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> ; Test lib call simplification of __stpcpy_chk calls with various values
>>>> ; for src, dst, and slen.
>>>> ;
>>>> @@ -13,33 +14,36 @@ target datalayout = "e-p:32:32:32-i1:8:8
>>>> define i8* @test_simplify1() {
>>>> ; CHECK-LABEL: @test_simplify1(
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 dereferenceable(12) getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 dereferenceable(12) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> +; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 11)
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [12 x i8], [12 x i8]* @.str, i32 0, i32 0
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> -; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 11)
>>>> %ret = call i8* @__stpcpy_chk(i8* %dst, i8* %src, i32 60)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_simplify2() {
>>>> ; CHECK-LABEL: @test_simplify2(
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 dereferenceable(12) getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 dereferenceable(12) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> +; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 11)
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [12 x i8], [12 x i8]* @.str, i32 0, i32 0
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> -; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 11)
>>>> %ret = call i8* @__stpcpy_chk(i8* %dst, i8* %src, i32 12)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_simplify3() {
>>>> ; CHECK-LABEL: @test_simplify3(
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 dereferenceable(12) getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 dereferenceable(12) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> +; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 11)
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [12 x i8], [12 x i8]* @.str, i32 0, i32 0
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> -; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 11)
>>>> %ret = call i8* @__stpcpy_chk(i8* %dst, i8* %src, i32 -1)
>>>> ret i8* %ret
>>>> }
>>>> @@ -48,11 +52,12 @@ define i8* @test_simplify3() {
>>>> define i8* @test_simplify4() {
>>>> ; CHECK-LABEL: @test_simplify4(
>>>> +; CHECK-NEXT: [[STPCPY:%.*]] = call i8* @stpcpy(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @b, i32 0, i32 0))
>>>> +; CHECK-NEXT: ret i8* [[STPCPY]]
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [60 x i8], [60 x i8]* @b, i32 0, i32 0
>>>> -; CHECK-NEXT: %stpcpy = call i8* @stpcpy(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @b, i32 0, i32 0))
>>>> -; CHECK-NEXT: ret i8* %stpcpy
>>>> %ret = call i8* @__stpcpy_chk(i8* %dst, i8* %src, i32 -1)
>>>> ret i8* %ret
>>>> }
>>>> @@ -61,12 +66,13 @@ define i8* @test_simplify4() {
>>>> define i8* @test_simplify5() {
>>>> ; CHECK-LABEL: @test_simplify5(
>>>> +; CHECK-NEXT: [[LEN:%.*]] = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = call i8* @__memcpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i32 [[LEN]])
>>>> +; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 11)
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [12 x i8], [12 x i8]* @.str, i32 0, i32 0
>>>> -; CHECK-NEXT: %len = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
>>>> -; CHECK-NEXT: %1 = call i8* @__memcpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i32 %len)
>>>> -; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 11)
>>>> %len = call i32 @llvm.objectsize.i32.p0i8(i8* %dst, i1 false, i1 false, i1 false)
>>>> %ret = call i8* @__stpcpy_chk(i8* %dst, i8* %src, i32 %len)
>>>> ret i8* %ret
>>>> @@ -76,11 +82,12 @@ define i8* @test_simplify5() {
>>>> define i8* @test_simplify6() {
>>>> ; CHECK-LABEL: @test_simplify6(
>>>> +; CHECK-NEXT: [[STRLEN:%.*]] = call i32 @strlen(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0))
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 [[STRLEN]]
>>>> +; CHECK-NEXT: ret i8* [[TMP1]]
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> -; CHECK-NEXT: %strlen = call i32 @strlen(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0))
>>>> -; CHECK-NEXT: %1 = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 %strlen
>>>> -; CHECK-NEXT: ret i8* %1
>>>> %len = call i32 @llvm.objectsize.i32.p0i8(i8* %dst, i1 false, i1 false, i1 false)
>>>> %ret = call i8* @__stpcpy_chk(i8* %dst, i8* %dst, i32 %len)
>>>> ret i8* %ret
>>>> @@ -90,11 +97,12 @@ define i8* @test_simplify6() {
>>>> define i8* @test_no_simplify1() {
>>>> ; CHECK-LABEL: @test_no_simplify1(
>>>> +; CHECK-NEXT: [[RET:%.*]] = call i8* @__stpcpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @b, i32 0, i32 0), i32 8)
>>>> +; CHECK-NEXT: ret i8* [[RET]]
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [60 x i8], [60 x i8]* @b, i32 0, i32 0
>>>> -; CHECK-NEXT: %ret = call i8* @__stpcpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @b, i32 0, i32 0), i32 8)
>>>> -; CHECK-NEXT: ret i8* %ret
>>>> %ret = call i8* @__stpcpy_chk(i8* %dst, i8* %src, i32 8)
>>>> ret i8* %ret
>>>> }
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/strcmp-1.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/strcmp-1.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/strcmp-1.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/strcmp-1.ll Tue Aug 13 02:11:49 2019
>>>> @@ -1,3 +1,4 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> ; Test that the strcmp library call simplifier works correctly.
>>>> ; RUN: opt < %s -instcombine -S | FileCheck %s --check-prefix=NOBCMP
>>>> ; RUN: opt < %s -instcombine -mtriple=unknown-unknown-linux-gnu -S | FileCheck %s --check-prefix=BCMP
>>>> @@ -18,7 +19,18 @@ define i32 @test1(i8* %str2) {
>>>> ; CHECK: %1 = zext i8 %strcmpload to i32
>>>> ; CHECK: %2 = sub nsw i32 0, %1
>>>> ; CHECK: ret i32 %2
>>>> -
>>>> +; NOBCMP-LABEL: @test1(
>>>> +; NOBCMP-NEXT: [[STRCMPLOAD:%.*]] = load i8, i8* [[STR2:%.*]], align 1
>>>> +; NOBCMP-NEXT: [[TMP1:%.*]] = zext i8 [[STRCMPLOAD]] to i32
>>>> +; NOBCMP-NEXT: [[TMP2:%.*]] = sub nsw i32 0, [[TMP1]]
>>>> +; NOBCMP-NEXT: ret i32 [[TMP2]]
>>>> +;
>>>> +; BCMP-LABEL: @test1(
>>>> +; BCMP-NEXT: [[STRCMPLOAD:%.*]] = load i8, i8* [[STR2:%.*]], align 1
>>>> +; BCMP-NEXT: [[TMP1:%.*]] = zext i8 [[STRCMPLOAD]] to i32
>>>> +; BCMP-NEXT: [[TMP2:%.*]] = sub nsw i32 0, [[TMP1]]
>>>> +; BCMP-NEXT: ret i32 [[TMP2]]
>>>> +;
>>>> %str1 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
>>>> %temp1 = call i32 @strcmp(i8* %str1, i8* %str2)
>>>> ret i32 %temp1
>>>> @@ -31,7 +43,16 @@ define i32 @test2(i8* %str1) {
>>>> ; CHECK: %strcmpload = load i8, i8* %str
>>>> ; CHECK: %1 = zext i8 %strcmpload to i32
>>>> ; CHECK: ret i32 %1
>>>> -
>>>> +; NOBCMP-LABEL: @test2(
>>>> +; NOBCMP-NEXT: [[STRCMPLOAD:%.*]] = load i8, i8* [[STR1:%.*]], align 1
>>>> +; NOBCMP-NEXT: [[TMP1:%.*]] = zext i8 [[STRCMPLOAD]] to i32
>>>> +; NOBCMP-NEXT: ret i32 [[TMP1]]
>>>> +;
>>>> +; BCMP-LABEL: @test2(
>>>> +; BCMP-NEXT: [[STRCMPLOAD:%.*]] = load i8, i8* [[STR1:%.*]], align 1
>>>> +; BCMP-NEXT: [[TMP1:%.*]] = zext i8 [[STRCMPLOAD]] to i32
>>>> +; BCMP-NEXT: ret i32 [[TMP1]]
>>>> +;
>>>> %str2 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
>>>> %temp1 = call i32 @strcmp(i8* %str1, i8* %str2)
>>>> ret i32 %temp1
>>>> @@ -41,7 +62,12 @@ define i32 @test2(i8* %str1) {
>>>> define i32 @test3() {
>>>> ; CHECK-LABEL: @test3(
>>>> ; CHECK: ret i32 -1
>>>> -
>>>> +; NOBCMP-LABEL: @test3(
>>>> +; NOBCMP-NEXT: ret i32 -1
>>>> +;
>>>> +; BCMP-LABEL: @test3(
>>>> +; BCMP-NEXT: ret i32 -1
>>>> +;
>>>> %str1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
>>>> %str2 = getelementptr inbounds [6 x i8], [6 x i8]* @hello, i32 0, i32 0
>>>> %temp1 = call i32 @strcmp(i8* %str1, i8* %str2)
>>>> @@ -51,7 +77,12 @@ define i32 @test3() {
>>>> define i32 @test4() {
>>>> ; CHECK-LABEL: @test4(
>>>> ; CHECK: ret i32 1
>>>> -
>>>> +; NOBCMP-LABEL: @test4(
>>>> +; NOBCMP-NEXT: ret i32 1
>>>> +;
>>>> +; BCMP-LABEL: @test4(
>>>> +; BCMP-NEXT: ret i32 1
>>>> +;
>>>> %str1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
>>>> %str2 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
>>>> %temp1 = call i32 @strcmp(i8* %str1, i8* %str2)
>>>> @@ -64,7 +95,16 @@ define i32 @test5(i1 %b) {
>>>> ; CHECK-LABEL: @test5(
>>>> ; CHECK: %memcmp = call i32 @memcmp(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i32 0, i32 0), i8* %str2, i32 5)
>>>> ; CHECK: ret i32 %memcmp
>>>> -
>>>> +; NOBCMP-LABEL: @test5(
>>>> +; NOBCMP-NEXT: [[STR2:%.*]] = select i1 [[B:%.*]], i8* getelementptr inbounds ([5 x i8], [5 x i8]* @hell, i32 0, i32 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @bell, i32 0, i32 0)
>>>> +; NOBCMP-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(5) getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i32 0, i32 0), i8* dereferenceable(5) [[STR2]], i32 5)
>>>> +; NOBCMP-NEXT: ret i32 [[MEMCMP]]
>>>> +;
>>>> +; BCMP-LABEL: @test5(
>>>> +; BCMP-NEXT: [[STR2:%.*]] = select i1 [[B:%.*]], i8* getelementptr inbounds ([5 x i8], [5 x i8]* @hell, i32 0, i32 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @bell, i32 0, i32 0)
>>>> +; BCMP-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(5) getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i32 0, i32 0), i8* dereferenceable(5) [[STR2]], i32 5)
>>>> +; BCMP-NEXT: ret i32 [[MEMCMP]]
>>>> +;
>>>> %str1 = getelementptr inbounds [6 x i8], [6 x i8]* @hello, i32 0, i32 0
>>>> %temp1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
>>>> %temp2 = getelementptr inbounds [5 x i8], [5 x i8]* @bell, i32 0, i32 0
>>>> @@ -77,22 +117,31 @@ define i32 @test5(i1 %b) {
>>>> define i32 @test6(i8* %str) {
>>>> ; CHECK-LABEL: @test6(
>>>> ; CHECK: ret i32 0
>>>> -
>>>> +; NOBCMP-LABEL: @test6(
>>>> +; NOBCMP-NEXT: ret i32 0
>>>> +;
>>>> +; BCMP-LABEL: @test6(
>>>> +; BCMP-NEXT: ret i32 0
>>>> +;
>>>> %temp1 = call i32 @strcmp(i8* %str, i8* %str)
>>>> ret i32 %temp1
>>>> }
>>>> ; strcmp(x, y) == 0 -> bcmp(x, y, <known length>)
>>>> define i1 @test7(i1 %b) {
>>>> +; NOBCMP-LABEL: @test7(
>>>> +; NOBCMP-NEXT: [[STR2:%.*]] = select i1 [[B:%.*]], i8* getelementptr inbounds ([5 x i8], [5 x i8]* @hell, i32 0, i32 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @bell, i32 0, i32 0)
>>>> +; NOBCMP-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(5) getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i32 0, i32 0), i8* dereferenceable(5) [[STR2]], i32 5)
>>>> +; NOBCMP-NEXT: [[RES:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> +; NOBCMP-NEXT: ret i1 [[RES]]
>>>> +;
>>>> ; BCMP-LABEL: @test7(
>>>> -; BCMP: %bcmp = call i32 @bcmp(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i32 0, i32 0), i8* %str2, i32 5)
>>>> -; BCMP: %res = icmp eq i32 %bcmp, 0
>>>> -; BCMP: ret i1 %res
>>>> +; BCMP-NEXT: [[STR2:%.*]] = select i1 [[B:%.*]], i8* getelementptr inbounds ([5 x i8], [5 x i8]* @hell, i32 0, i32 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @bell, i32 0, i32 0)
>>>> +; BCMP-NEXT: [[BCMP:%.*]] = call i32 @bcmp(i8* dereferenceable(5) getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i32 0, i32 0), i8* dereferenceable(5) [[STR2]], i32 5)
>>>> +; BCMP-NEXT: [[RES:%.*]] = icmp eq i32 [[BCMP]], 0
>>>> +; BCMP-NEXT: ret i1 [[RES]]
>>>> +;
>>>> -; NOBCMP-LABEL: @test7(
>>>> -; NOBCMP: %memcmp = call i32 @memcmp(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i32 0, i32 0), i8* %str2, i32 5)
>>>> -; NOBCMP: %res = icmp eq i32 %memcmp, 0
>>>> -; NOBCMP: ret i1 %res
>>>> %str1 = getelementptr inbounds [6 x i8], [6 x i8]* @hello, i32 0, i32 0
>>>> %temp1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/strcmp-memcmp.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/strcmp-memcmp.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/strcmp-memcmp.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/strcmp-memcmp.ll Tue Aug 13 02:11:49 2019
>>>> @@ -11,7 +11,7 @@ declare void @use(i32)
>>>> define i32 @strcmp_memcmp([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strcmp_memcmp(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull [[STRING]], i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull dereferenceable(4) [[STRING]], i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -28,7 +28,7 @@ declare i32 @strcmp(i8* nocapture, i8* n
>>>> define i32 @strcmp_memcmp2([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strcmp_memcmp2(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull [[STRING]], i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull dereferenceable(4) [[STRING]], i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -43,7 +43,7 @@ define i32 @strcmp_memcmp2([12 x i8]* de
>>>> define i32 @strcmp_memcmp3([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strcmp_memcmp3(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull [[STRING]], i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull dereferenceable(4) [[STRING]], i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -58,7 +58,7 @@ define i32 @strcmp_memcmp3([12 x i8]* de
>>>> define i32 @strcmp_memcmp4([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strcmp_memcmp4(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull [[STRING]], i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull dereferenceable(4) [[STRING]], i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -73,7 +73,7 @@ define i32 @strcmp_memcmp4([12 x i8]* de
>>>> define i32 @strcmp_memcmp5([5 x i8]* dereferenceable (5) %buf) {
>>>> ; CHECK-LABEL: @strcmp_memcmp5(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [5 x i8], [5 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull [[STRING]], i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull dereferenceable(4) [[STRING]], i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -88,7 +88,7 @@ define i32 @strcmp_memcmp5([5 x i8]* der
>>>> define i32 @strcmp_memcmp6([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strcmp_memcmp6(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull [[STRING]], i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull dereferenceable(4) [[STRING]], i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -103,7 +103,7 @@ define i32 @strcmp_memcmp6([12 x i8]* de
>>>> define i32 @strcmp_memcmp7([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strcmp_memcmp7(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull [[STRING]], i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull dereferenceable(4) [[STRING]], i64 4)
>>>> ; CHECK-NEXT: [[MEMCMP_LOBIT:%.*]] = lshr i32 [[MEMCMP]], 31
>>>> ; CHECK-NEXT: ret i32 [[MEMCMP_LOBIT]]
>>>> ;
>>>> @@ -117,7 +117,7 @@ define i32 @strcmp_memcmp7([12 x i8]* de
>>>> define i32 @strcmp_memcmp8([4 x i8]* dereferenceable (4) %buf) {
>>>> ; CHECK-LABEL: @strcmp_memcmp8(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [4 x i8], [4 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull [[STRING]], i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull dereferenceable(4) [[STRING]], i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -132,7 +132,7 @@ define i32 @strcmp_memcmp8([4 x i8]* der
>>>> define i32 @strcmp_memcmp9([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strcmp_memcmp9(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull [[STRING]], i8* getelementptr inbounds ([8 x i8], [8 x i8]* @abc, i64 0, i64 0), i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull dereferenceable(4) [[STRING]], i8* dereferenceable(4) getelementptr inbounds ([8 x i8], [8 x i8]* @abc, i64 0, i64 0), i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -148,7 +148,7 @@ define i32 @strcmp_memcmp9([12 x i8]* de
>>>> define i32 @strncmp_memcmp([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strncmp_memcmp(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull [[STRING]], i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 2)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull dereferenceable(2) [[STRING]], i8* dereferenceable(2) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 2)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -165,7 +165,7 @@ declare i32 @strncmp(i8* nocapture, i8*
>>>> define i32 @strncmp_memcmp2([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strncmp_memcmp2(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull [[STRING]], i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull dereferenceable(4) [[STRING]], i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -180,7 +180,7 @@ define i32 @strncmp_memcmp2([12 x i8]* d
>>>> define i32 @strncmp_memcmp3([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strncmp_memcmp3(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull [[STRING]], i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull dereferenceable(4) [[STRING]], i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -195,7 +195,7 @@ define i32 @strncmp_memcmp3([12 x i8]* d
>>>> define i32 @strncmp_memcmp4([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strncmp_memcmp4(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull [[STRING]], i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull dereferenceable(4) [[STRING]], i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -210,7 +210,7 @@ define i32 @strncmp_memcmp4([12 x i8]* d
>>>> define i32 @strncmp_memcmp5([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strncmp_memcmp5(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull [[STRING]], i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull dereferenceable(4) [[STRING]], i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -226,7 +226,7 @@ define i32 @strncmp_memcmp5([12 x i8]* d
>>>> define i32 @strncmp_memcmp6([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strncmp_memcmp6(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull [[STRING]], i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull dereferenceable(4) [[STRING]], i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -241,7 +241,7 @@ define i32 @strncmp_memcmp6([12 x i8]* d
>>>> define i32 @strncmp_memcmp7([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strncmp_memcmp7(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull [[STRING]], i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull dereferenceable(4) [[STRING]], i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -256,7 +256,7 @@ define i32 @strncmp_memcmp7([12 x i8]* d
>>>> define i32 @strncmp_memcmp8([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strncmp_memcmp8(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull [[STRING]], i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 3)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull dereferenceable(3) [[STRING]], i8* dereferenceable(3) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i64 3)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -271,7 +271,7 @@ define i32 @strncmp_memcmp8([12 x i8]* d
>>>> define i32 @strncmp_memcmp9([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strncmp_memcmp9(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull [[STRING]], i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull dereferenceable(4) [[STRING]], i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -286,7 +286,7 @@ define i32 @strncmp_memcmp9([12 x i8]* d
>>>> define i32 @strncmp_memcmp10([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strncmp_memcmp10(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull [[STRING]], i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull dereferenceable(4) [[STRING]], i64 4)
>>>> ; CHECK-NEXT: [[MEMCMP_LOBIT:%.*]] = lshr i32 [[MEMCMP]], 31
>>>> ; CHECK-NEXT: ret i32 [[MEMCMP_LOBIT]]
>>>> ;
>>>> @@ -300,7 +300,7 @@ define i32 @strncmp_memcmp10([12 x i8]*
>>>> define i32 @strncmp_memcmp11([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strncmp_memcmp11(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull [[STRING]], i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull dereferenceable(4) [[STRING]], i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -315,7 +315,7 @@ define i32 @strncmp_memcmp11([12 x i8]*
>>>> define i32 @strncmp_memcmp12([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strncmp_memcmp12(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull [[STRING]], i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @key, i64 0, i64 0), i8* nonnull dereferenceable(4) [[STRING]], i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -330,7 +330,7 @@ define i32 @strncmp_memcmp12([12 x i8]*
>>>> define i32 @strncmp_memcmp13([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strncmp_memcmp13(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull [[STRING]], i8* getelementptr inbounds ([8 x i8], [8 x i8]* @abc, i64 0, i64 0), i64 2)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull dereferenceable(2) [[STRING]], i8* dereferenceable(2) getelementptr inbounds ([8 x i8], [8 x i8]* @abc, i64 0, i64 0), i64 2)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>> @@ -345,7 +345,7 @@ define i32 @strncmp_memcmp13([12 x i8]*
>>>> define i32 @strncmp_memcmp14([12 x i8]* dereferenceable (12) %buf) {
>>>> ; CHECK-LABEL: @strncmp_memcmp14(
>>>> ; CHECK-NEXT: [[STRING:%.*]] = getelementptr inbounds [12 x i8], [12 x i8]* [[BUF:%.*]], i64 0, i64 0
>>>> -; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull [[STRING]], i8* getelementptr inbounds ([8 x i8], [8 x i8]* @abc, i64 0, i64 0), i64 4)
>>>> +; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* nonnull dereferenceable(4) [[STRING]], i8* dereferenceable(4) getelementptr inbounds ([8 x i8], [8 x i8]* @abc, i64 0, i64 0), i64 4)
>>>> ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[MEMCMP]], 0
>>>> ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
>>>> ; CHECK-NEXT: ret i32 [[CONV]]
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/strcpy_chk-1.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/strcpy_chk-1.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/strcpy_chk-1.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/strcpy_chk-1.ll Tue Aug 13 02:11:49 2019
>>>> @@ -1,3 +1,4 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> ; Test lib call simplification of __strcpy_chk calls with various values
>>>> ; for src, dst, and slen.
>>>> ;
>>>> @@ -13,33 +14,36 @@ target datalayout = "e-p:32:32:32-i1:8:8
>>>> define i8* @test_simplify1() {
>>>> ; CHECK-LABEL: @test_simplify1(
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 dereferenceable(12) getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 dereferenceable(12) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> +; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0)
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [12 x i8], [12 x i8]* @.str, i32 0, i32 0
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> -; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0)
>>>> %ret = call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 60)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_simplify2() {
>>>> ; CHECK-LABEL: @test_simplify2(
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 dereferenceable(12) getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 dereferenceable(12) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> +; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0)
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [12 x i8], [12 x i8]* @.str, i32 0, i32 0
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> -; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0)
>>>> %ret = call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 12)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_simplify3() {
>>>> ; CHECK-LABEL: @test_simplify3(
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 dereferenceable(12) getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 dereferenceable(12) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> +; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0)
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [12 x i8], [12 x i8]* @.str, i32 0, i32 0
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> -; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0)
>>>> %ret = call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 -1)
>>>> ret i8* %ret
>>>> }
>>>> @@ -48,11 +52,12 @@ define i8* @test_simplify3() {
>>>> define i8* @test_simplify4() {
>>>> ; CHECK-LABEL: @test_simplify4(
>>>> +; CHECK-NEXT: [[STRCPY:%.*]] = call i8* @strcpy(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @b, i32 0, i32 0))
>>>> +; CHECK-NEXT: ret i8* [[STRCPY]]
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [60 x i8], [60 x i8]* @b, i32 0, i32 0
>>>> -; CHECK-NEXT: %strcpy = call i8* @strcpy(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @b, i32 0, i32 0))
>>>> -; CHECK-NEXT: ret i8* %strcpy
>>>> %ret = call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 -1)
>>>> ret i8* %ret
>>>> }
>>>> @@ -61,12 +66,13 @@ define i8* @test_simplify4() {
>>>> define i8* @test_simplify5() {
>>>> ; CHECK-LABEL: @test_simplify5(
>>>> +; CHECK-NEXT: [[LEN:%.*]] = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
>>>> +; CHECK-NEXT: [[TMP1:%.*]] = call i8* @__memcpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i32 [[LEN]])
>>>> +; CHECK-NEXT: ret i8* [[TMP1]]
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [12 x i8], [12 x i8]* @.str, i32 0, i32 0
>>>> -; CHECK-NEXT: %len = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
>>>> -; CHECK-NEXT: %1 = call i8* @__memcpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i32 %len)
>>>> -; CHECK-NEXT: ret i8* %1
>>>> %len = call i32 @llvm.objectsize.i32.p0i8(i8* %dst, i1 false, i1 false, i1 false)
>>>> %ret = call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 %len)
>>>> ret i8* %ret
>>>> @@ -76,11 +82,12 @@ define i8* @test_simplify5() {
>>>> define i8* @test_simplify6() {
>>>> ; CHECK-LABEL: @test_simplify6(
>>>> +; CHECK-NEXT: [[LEN:%.*]] = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
>>>> +; CHECK-NEXT: [[RET:%.*]] = call i8* @__strcpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i32 [[LEN]])
>>>> +; CHECK-NEXT: ret i8* [[RET]]
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> -; CHECK-NEXT: %len = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
>>>> -; CHECK-NEXT: %ret = call i8* @__strcpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i32 %len)
>>>> -; CHECK-NEXT: ret i8* %ret
>>>> %len = call i32 @llvm.objectsize.i32.p0i8(i8* %dst, i1 false, i1 false, i1 false)
>>>> %ret = call i8* @__strcpy_chk(i8* %dst, i8* %dst, i32 %len)
>>>> ret i8* %ret
>>>> @@ -90,11 +97,12 @@ define i8* @test_simplify6() {
>>>> define i8* @test_no_simplify1() {
>>>> ; CHECK-LABEL: @test_no_simplify1(
>>>> +; CHECK-NEXT: [[RET:%.*]] = call i8* @__strcpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @b, i32 0, i32 0), i32 8)
>>>> +; CHECK-NEXT: ret i8* [[RET]]
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [60 x i8], [60 x i8]* @b, i32 0, i32 0
>>>> -; CHECK-NEXT: %ret = call i8* @__strcpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @b, i32 0, i32 0), i32 8)
>>>> -; CHECK-NEXT: ret i8* %ret
>>>> %ret = call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 8)
>>>> ret i8* %ret
>>>> }
>>>>
>>>> Modified: llvm/trunk/test/Transforms/InstCombine/strncpy_chk-1.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/strncpy_chk-1.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/InstCombine/strncpy_chk-1.ll (original)
>>>> +++ llvm/trunk/test/Transforms/InstCombine/strncpy_chk-1.ll Tue Aug 13 02:11:49 2019
>>>> @@ -1,3 +1,4 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> ; Test lib call simplification of __strncpy_chk calls with various values
>>>> ; for len and dstlen.
>>>> ;
>>>> @@ -13,33 +14,36 @@ target datalayout = "e-p:32:32:32-i1:8:8
>>>> define i8* @test_simplify1() {
>>>> ; CHECK-LABEL: @test_simplify1(
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 dereferenceable(12) getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 dereferenceable(12) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> +; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0)
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [12 x i8], [12 x i8]* @.str, i32 0, i32 0
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> -; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0)
>>>> %ret = call i8* @__strncpy_chk(i8* %dst, i8* %src, i32 12, i32 60)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_simplify2() {
>>>> ; CHECK-LABEL: @test_simplify2(
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 dereferenceable(12) getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 dereferenceable(12) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> +; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0)
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [12 x i8], [12 x i8]* @.str, i32 0, i32 0
>>>> -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* align 1 getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 12, i1 false)
>>>> -; CHECK-NEXT: ret i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0)
>>>> %ret = call i8* @__strncpy_chk(i8* %dst, i8* %src, i32 12, i32 12)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_simplify3() {
>>>> ; CHECK-LABEL: @test_simplify3(
>>>> +; CHECK-NEXT: [[STRNCPY:%.*]] = call i8* @strncpy(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @b, i32 0, i32 0), i32 12)
>>>> +; CHECK-NEXT: ret i8* [[STRNCPY]]
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [60 x i8], [60 x i8]* @b, i32 0, i32 0
>>>> -; CHECK-NEXT: %strncpy = call i8* @strncpy(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @b, i32 0, i32 0), i32 12)
>>>> -; CHECK-NEXT: ret i8* %strncpy
>>>> %ret = call i8* @__strncpy_chk(i8* %dst, i8* %src, i32 12, i32 60)
>>>> ret i8* %ret
>>>> }
>>>> @@ -48,22 +52,24 @@ define i8* @test_simplify3() {
>>>> define i8* @test_no_simplify1() {
>>>> ; CHECK-LABEL: @test_no_simplify1(
>>>> +; CHECK-NEXT: [[RET:%.*]] = call i8* @__strncpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 8, i32 4)
>>>> +; CHECK-NEXT: ret i8* [[RET]]
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [12 x i8], [12 x i8]* @.str, i32 0, i32 0
>>>> -; CHECK-NEXT: %ret = call i8* @__strncpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 8, i32 4)
>>>> -; CHECK-NEXT: ret i8* %ret
>>>> %ret = call i8* @__strncpy_chk(i8* %dst, i8* %src, i32 8, i32 4)
>>>> ret i8* %ret
>>>> }
>>>> define i8* @test_no_simplify2() {
>>>> ; CHECK-LABEL: @test_no_simplify2(
>>>> +; CHECK-NEXT: [[RET:%.*]] = call i8* @__strncpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @b, i32 0, i32 0), i32 8, i32 0)
>>>> +; CHECK-NEXT: ret i8* [[RET]]
>>>> +;
>>>> %dst = getelementptr inbounds [60 x i8], [60 x i8]* @a, i32 0, i32 0
>>>> %src = getelementptr inbounds [60 x i8], [60 x i8]* @b, i32 0, i32 0
>>>> -; CHECK-NEXT: %ret = call i8* @__strncpy_chk(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @b, i32 0, i32 0), i32 8, i32 0)
>>>> -; CHECK-NEXT: ret i8* %ret
>>>> %ret = call i8* @__strncpy_chk(i8* %dst, i8* %src, i32 8, i32 0)
>>>> ret i8* %ret
>>>> }
>>>>
>>>> Modified: llvm/trunk/test/Transforms/MemCpyOpt/memcpy-to-memset-with-lifetimes.ll
>>>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/MemCpyOpt/memcpy-to-memset-with-lifetimes.ll?rev=368657&r1=368656&r2=368657&view=diff
>>>> ==============================================================================
>>>> --- llvm/trunk/test/Transforms/MemCpyOpt/memcpy-to-memset-with-lifetimes.ll (original)
>>>> +++ llvm/trunk/test/Transforms/MemCpyOpt/memcpy-to-memset-with-lifetimes.ll Tue Aug 13 02:11:49 2019
>>>> @@ -1,9 +1,16 @@
>>>> +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
>>>> ; RUN: opt -basicaa -memcpyopt -instcombine -S < %s | FileCheck %s
>>>> target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
>>>> target triple = "x86_64-unknown-linux-gnu"
>>>> define void @foo([8 x i64]* noalias nocapture sret dereferenceable(64) %sret) {
>>>> +; CHECK-LABEL: @foo(
>>>> +; CHECK-NEXT: entry-block:
>>>> +; CHECK-NEXT: [[SRET1:%.*]] = bitcast [8 x i64]* [[SRET:%.*]] to i8*
>>>> +; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* nonnull align 8 dereferenceable(64) [[SRET1]], i8 0, i64 64, i1 false)
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> entry-block:
>>>> %a = alloca [8 x i64], align 8
>>>> %a.cast = bitcast [8 x i64]* %a to i8*
>>>> @@ -14,14 +21,23 @@ entry-block:
>>>> call void @llvm.lifetime.end.p0i8(i64 64, i8* %a.cast)
>>>> ret void
>>>> -; CHECK-LABEL: @foo(
>>>> -; CHECK: %[[sret_cast:[^=]+]] = bitcast [8 x i64]* %sret to i8*
>>>> -; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* nonnull align 8 %[[sret_cast]], i8 0, i64 64
>>>> -; CHECK-NOT: call void @llvm.memcpy
>>>> -; CHECK: ret void
>>>> }
>>>> define void @bar([8 x i64]* noalias nocapture sret dereferenceable(64) %sret, [8 x i64]* noalias nocapture dereferenceable(64) %out) {
>>>> +; CHECK-LABEL: @bar(
>>>> +; CHECK-NEXT: entry-block:
>>>> +; CHECK-NEXT: [[A:%.*]] = alloca [8 x i64], align 8
>>>> +; CHECK-NEXT: [[A_CAST:%.*]] = bitcast [8 x i64]* [[A]] to i8*
>>>> +; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 64, i8* nonnull [[A_CAST]])
>>>> +; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* nonnull align 8 dereferenceable(64) [[A_CAST]], i8 0, i64 64, i1 false)
>>>> +; CHECK-NEXT: [[SRET_CAST:%.*]] = bitcast [8 x i64]* [[SRET:%.*]] to i8*
>>>> +; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* nonnull align 8 dereferenceable(64) [[SRET_CAST]], i8 0, i64 64, i1 false)
>>>> +; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* nonnull align 8 dereferenceable(32) [[A_CAST]], i8 42, i64 32, i1 false)
>>>> +; CHECK-NEXT: [[OUT_CAST:%.*]] = bitcast [8 x i64]* [[OUT:%.*]] to i8*
>>>> +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 8 dereferenceable(64) [[OUT_CAST]], i8* nonnull align 8 dereferenceable(64) [[A_CAST]], i64 64, i1 false)
>>>> +; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 64, i8* nonnull [[A_CAST]])
>>>> +; CHECK-NEXT: ret void
>>>> +;
>>>> entry-block:
>>>> %a = alloca [8 x i64], align 8
>>>> %a.cast = bitcast [8 x i64]* %a to i8*
>>>> @@ -35,17 +51,6 @@ entry-block:
>>>> call void @llvm.lifetime.end.p0i8(i64 64, i8* %a.cast)
>>>> ret void
>>>> -; CHECK-LABEL: @bar(
>>>> -; CHECK: %[[a:[^=]+]] = alloca [8 x i64]
>>>> -; CHECK: %[[a_cast:[^=]+]] = bitcast [8 x i64]* %[[a]] to i8*
>>>> -; CHECK: call void @llvm.memset.p0i8.i64(i8* nonnull align 8 %[[a_cast]], i8 0, i64 64
>>>> -; CHECK: %[[sret_cast:[^=]+]] = bitcast [8 x i64]* %sret to i8*
>>>> -; CHECK: call void @llvm.memset.p0i8.i64(i8* nonnull align 8 %[[sret_cast]], i8 0, i64 64
>>>> -; CHECK: call void @llvm.memset.p0i8.i64(i8* nonnull align 8 %[[a_cast]], i8 42, i64 32
>>>> -; CHECK: %[[out_cast:[^=]+]] = bitcast [8 x i64]* %out to i8*
>>>> -; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 8 %[[out_cast]], i8* nonnull align 8 %[[a_cast]], i64 64
>>>> -; CHECK-NOT: call void @llvm.memcpy
>>>> -; CHECK: ret void
>>>> }
>>>> declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind
>>>>
>>>>
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