[llvm] r318323 - [InstCombine] trunc (binop X, C) --> binop (trunc X, C')
David Blaikie via llvm-commits
llvm-commits at lists.llvm.org
Thu Dec 7 19:38:14 PST 2017
Haven't looked too far yet, but here's my current repro:
typedef struct {
int a;
char b[]
} c;
d;
e(c *f) {
int g, h = g = f;
d = 0;
for (; d < h; d++)
f->b[d + 1] = f->b[d] + g;
}
clang -cc1 -emit-obj -triple x86_64-linux-gnu -target-feature +sse4.2 -O2
-w -fsanitize=memory -vectorize-loops -o /dev/null foo.ii -x c
Appears to run forever/a long time.
Interestingly, a nearby test case seems to fail with or without the patch:
typedef struct {
int a;
char b[]
} c;
d;
e(c *f) {
int g = f;
for (; d; d++)
f->b[d + 1] = f->b[d] + g;
}
So I guess this might be one of those unfortunate cases of an optimization
causing further exposure to an existing bug, but still..
On Thu, Dec 7, 2017 at 1:56 PM Sanjay Patel <spatel at rotateright.com> wrote:
> Thanks for letting me know.
>
> This might be a good time to check out (though I haven't gotten to it yet):
> https://github.com/rutgers-apl/alive-loops
>
> This was mentioned on llvm-dev:
> http://lists.llvm.org/pipermail/llvm-dev/2017-September/117466.html
>
> On Thu, Dec 7, 2017 at 12:48 PM, Chandler Carruth <chandlerc at gmail.com>
> wrote:
>
>> FYI, we've root caused an compile timeout to this revision. It seems
>> quite likely this is fighting another instcombine.
>>
>> We're still working on a test case, but wanted to go ahead and give a
>> heads-up in case you can spot the place where we reverse this transform.
>>
>>
>> On Wed, Nov 15, 2017 at 8:12 PM Sanjay Patel via llvm-commits <
>> llvm-commits at lists.llvm.org> wrote:
>>
>>> Author: spatel
>>> Date: Wed Nov 15 11:12:01 2017
>>> New Revision: 318323
>>>
>>> URL: http://llvm.org/viewvc/llvm-project?rev=318323&view=rev
>>> Log:
>>> [InstCombine] trunc (binop X, C) --> binop (trunc X, C')
>>>
>>> Note that one-use and shouldChangeType() are checked ahead of the switch.
>>>
>>> Without the narrowing folds, we can produce inferior vector code as
>>> shown in PR35299:
>>> https://bugs.llvm.org/show_bug.cgi?id=35299
>>>
>>>
>>> Modified:
>>> llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp
>>> llvm/trunk/test/Transforms/InstCombine/pr33765.ll
>>> llvm/trunk/test/Transforms/InstCombine/trunc-binop-ext.ll
>>>
>>> Modified: llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp
>>> URL:
>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp?rev=318323&r1=318322&r2=318323&view=diff
>>>
>>> ==============================================================================
>>> --- llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp (original)
>>> +++ llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp Wed Nov
>>> 15 11:12:01 2017
>>> @@ -545,6 +545,8 @@ Instruction *InstCombiner::narrowBinOp(T
>>> if (!match(Trunc.getOperand(0), m_OneUse(m_BinOp(BinOp))))
>>> return nullptr;
>>>
>>> + Value *BinOp0 = BinOp->getOperand(0);
>>> + Value *BinOp1 = BinOp->getOperand(1);
>>> switch (BinOp->getOpcode()) {
>>> case Instruction::And:
>>> case Instruction::Or:
>>> @@ -552,20 +554,31 @@ Instruction *InstCombiner::narrowBinOp(T
>>> case Instruction::Add:
>>> case Instruction::Mul: {
>>> Constant *C;
>>> - if (match(BinOp->getOperand(1), m_Constant(C))) {
>>> + if (match(BinOp1, m_Constant(C))) {
>>> // trunc (binop X, C) --> binop (trunc X, C')
>>> Constant *NarrowC = ConstantExpr::getTrunc(C, DestTy);
>>> - Value *TruncX = Builder.CreateTrunc(BinOp->getOperand(0), DestTy);
>>> + Value *TruncX = Builder.CreateTrunc(BinOp0, DestTy);
>>> return BinaryOperator::Create(BinOp->getOpcode(), TruncX,
>>> NarrowC);
>>> }
>>> + Value *X;
>>> + if (match(BinOp0, m_ZExtOrSExt(m_Value(X))) && X->getType() ==
>>> DestTy) {
>>> + // trunc (binop (ext X), Y) --> binop X, (trunc Y)
>>> + Value *NarrowOp1 = Builder.CreateTrunc(BinOp1, DestTy);
>>> + return BinaryOperator::Create(BinOp->getOpcode(), X, NarrowOp1);
>>> + }
>>> + if (match(BinOp1, m_ZExtOrSExt(m_Value(X))) && X->getType() ==
>>> DestTy) {
>>> + // trunc (binop Y, (ext X)) --> binop (trunc Y), X
>>> + Value *NarrowOp0 = Builder.CreateTrunc(BinOp0, DestTy);
>>> + return BinaryOperator::Create(BinOp->getOpcode(), NarrowOp0, X);
>>> + }
>>> break;
>>> }
>>> case Instruction::Sub: {
>>> Constant *C;
>>> - if (match(BinOp->getOperand(0), m_Constant(C))) {
>>> + if (match(BinOp0, m_Constant(C))) {
>>> // trunc (binop C, X) --> binop (trunc C', X)
>>> Constant *NarrowC = ConstantExpr::getTrunc(C, DestTy);
>>> - Value *TruncX = Builder.CreateTrunc(BinOp->getOperand(1), DestTy);
>>> + Value *TruncX = Builder.CreateTrunc(BinOp1, DestTy);
>>> return BinaryOperator::Create(BinOp->getOpcode(), NarrowC,
>>> TruncX);
>>> }
>>> break;
>>>
>>> Modified: llvm/trunk/test/Transforms/InstCombine/pr33765.ll
>>> URL:
>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/pr33765.ll?rev=318323&r1=318322&r2=318323&view=diff
>>>
>>> ==============================================================================
>>> --- llvm/trunk/test/Transforms/InstCombine/pr33765.ll (original)
>>> +++ llvm/trunk/test/Transforms/InstCombine/pr33765.ll Wed Nov 15
>>> 11:12:01 2017
>>> @@ -10,9 +10,8 @@ define void @patatino(i8 %beth) {
>>> ; CHECK: if.then9:
>>> ; CHECK-NEXT: [[MUL:%.*]] = mul nuw nsw i32 [[CONV]], [[CONV]]
>>> ; CHECK-NEXT: [[TINKY:%.*]] = load i16, i16* @glob, align 2
>>> -; CHECK-NEXT: [[CONV131:%.*]] = zext i16 [[TINKY]] to i32
>>> -; CHECK-NEXT: [[AND:%.*]] = and i32 [[MUL]], [[CONV131]]
>>> -; CHECK-NEXT: [[CONV14:%.*]] = trunc i32 [[AND]] to i16
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[MUL]] to i16
>>> +; CHECK-NEXT: [[CONV14:%.*]] = and i16 [[TINKY]], [[TMP1]]
>>> ; CHECK-NEXT: store i16 [[CONV14]], i16* @glob, align 2
>>> ; CHECK-NEXT: ret void
>>> ;
>>>
>>> Modified: llvm/trunk/test/Transforms/InstCombine/trunc-binop-ext.ll
>>> URL:
>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/trunc-binop-ext.ll?rev=318323&r1=318322&r2=318323&view=diff
>>>
>>> ==============================================================================
>>> --- llvm/trunk/test/Transforms/InstCombine/trunc-binop-ext.ll (original)
>>> +++ llvm/trunk/test/Transforms/InstCombine/trunc-binop-ext.ll Wed Nov 15
>>> 11:12:01 2017
>>> @@ -2,9 +2,8 @@
>>>
>>> define i16 @narrow_sext_and(i16 %x16, i32 %y32) {
>>> ; CHECK-LABEL: @narrow_sext_and(
>>> -; CHECK-NEXT: [[X321:%.*]] = zext i16 %x16 to i32
>>> -; CHECK-NEXT: [[B:%.*]] = and i32 [[X321]], %y32
>>> -; CHECK-NEXT: [[R:%.*]] = trunc i32 [[B]] to i16
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 %y32 to i16
>>> +; CHECK-NEXT: [[R:%.*]] = and i16 [[TMP1]], %x16
>>> ; CHECK-NEXT: ret i16 [[R]]
>>> ;
>>> %x32 = sext i16 %x16 to i32
>>> @@ -15,9 +14,8 @@ define i16 @narrow_sext_and(i16 %x16, i3
>>>
>>> define i16 @narrow_zext_and(i16 %x16, i32 %y32) {
>>> ; CHECK-LABEL: @narrow_zext_and(
>>> -; CHECK-NEXT: [[X32:%.*]] = zext i16 %x16 to i32
>>> -; CHECK-NEXT: [[B:%.*]] = and i32 [[X32]], %y32
>>> -; CHECK-NEXT: [[R:%.*]] = trunc i32 [[B]] to i16
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 %y32 to i16
>>> +; CHECK-NEXT: [[R:%.*]] = and i16 [[TMP1]], %x16
>>> ; CHECK-NEXT: ret i16 [[R]]
>>> ;
>>> %x32 = zext i16 %x16 to i32
>>> @@ -28,9 +26,8 @@ define i16 @narrow_zext_and(i16 %x16, i3
>>>
>>> define i16 @narrow_sext_or(i16 %x16, i32 %y32) {
>>> ; CHECK-LABEL: @narrow_sext_or(
>>> -; CHECK-NEXT: [[X321:%.*]] = zext i16 %x16 to i32
>>> -; CHECK-NEXT: [[B:%.*]] = or i32 [[X321]], %y32
>>> -; CHECK-NEXT: [[R:%.*]] = trunc i32 [[B]] to i16
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 %y32 to i16
>>> +; CHECK-NEXT: [[R:%.*]] = or i16 [[TMP1]], %x16
>>> ; CHECK-NEXT: ret i16 [[R]]
>>> ;
>>> %x32 = sext i16 %x16 to i32
>>> @@ -41,9 +38,8 @@ define i16 @narrow_sext_or(i16 %x16, i32
>>>
>>> define i16 @narrow_zext_or(i16 %x16, i32 %y32) {
>>> ; CHECK-LABEL: @narrow_zext_or(
>>> -; CHECK-NEXT: [[X32:%.*]] = zext i16 %x16 to i32
>>> -; CHECK-NEXT: [[B:%.*]] = or i32 [[X32]], %y32
>>> -; CHECK-NEXT: [[R:%.*]] = trunc i32 [[B]] to i16
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 %y32 to i16
>>> +; CHECK-NEXT: [[R:%.*]] = or i16 [[TMP1]], %x16
>>> ; CHECK-NEXT: ret i16 [[R]]
>>> ;
>>> %x32 = zext i16 %x16 to i32
>>> @@ -54,9 +50,8 @@ define i16 @narrow_zext_or(i16 %x16, i32
>>>
>>> define i16 @narrow_sext_xor(i16 %x16, i32 %y32) {
>>> ; CHECK-LABEL: @narrow_sext_xor(
>>> -; CHECK-NEXT: [[X321:%.*]] = zext i16 %x16 to i32
>>> -; CHECK-NEXT: [[B:%.*]] = xor i32 [[X321]], %y32
>>> -; CHECK-NEXT: [[R:%.*]] = trunc i32 [[B]] to i16
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 %y32 to i16
>>> +; CHECK-NEXT: [[R:%.*]] = xor i16 [[TMP1]], %x16
>>> ; CHECK-NEXT: ret i16 [[R]]
>>> ;
>>> %x32 = sext i16 %x16 to i32
>>> @@ -67,9 +62,8 @@ define i16 @narrow_sext_xor(i16 %x16, i3
>>>
>>> define i16 @narrow_zext_xor(i16 %x16, i32 %y32) {
>>> ; CHECK-LABEL: @narrow_zext_xor(
>>> -; CHECK-NEXT: [[X32:%.*]] = zext i16 %x16 to i32
>>> -; CHECK-NEXT: [[B:%.*]] = xor i32 [[X32]], %y32
>>> -; CHECK-NEXT: [[R:%.*]] = trunc i32 [[B]] to i16
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 %y32 to i16
>>> +; CHECK-NEXT: [[R:%.*]] = xor i16 [[TMP1]], %x16
>>> ; CHECK-NEXT: ret i16 [[R]]
>>> ;
>>> %x32 = zext i16 %x16 to i32
>>> @@ -80,9 +74,8 @@ define i16 @narrow_zext_xor(i16 %x16, i3
>>>
>>> define i16 @narrow_sext_add(i16 %x16, i32 %y32) {
>>> ; CHECK-LABEL: @narrow_sext_add(
>>> -; CHECK-NEXT: [[X321:%.*]] = zext i16 %x16 to i32
>>> -; CHECK-NEXT: [[B:%.*]] = add i32 [[X321]], %y32
>>> -; CHECK-NEXT: [[R:%.*]] = trunc i32 [[B]] to i16
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 %y32 to i16
>>> +; CHECK-NEXT: [[R:%.*]] = add i16 [[TMP1]], %x16
>>> ; CHECK-NEXT: ret i16 [[R]]
>>> ;
>>> %x32 = sext i16 %x16 to i32
>>> @@ -93,9 +86,8 @@ define i16 @narrow_sext_add(i16 %x16, i3
>>>
>>> define i16 @narrow_zext_add(i16 %x16, i32 %y32) {
>>> ; CHECK-LABEL: @narrow_zext_add(
>>> -; CHECK-NEXT: [[X32:%.*]] = zext i16 %x16 to i32
>>> -; CHECK-NEXT: [[B:%.*]] = add i32 [[X32]], %y32
>>> -; CHECK-NEXT: [[R:%.*]] = trunc i32 [[B]] to i16
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 %y32 to i16
>>> +; CHECK-NEXT: [[R:%.*]] = add i16 [[TMP1]], %x16
>>> ; CHECK-NEXT: ret i16 [[R]]
>>> ;
>>> %x32 = zext i16 %x16 to i32
>>> @@ -106,9 +98,8 @@ define i16 @narrow_zext_add(i16 %x16, i3
>>>
>>> define i16 @narrow_sext_mul(i16 %x16, i32 %y32) {
>>> ; CHECK-LABEL: @narrow_sext_mul(
>>> -; CHECK-NEXT: [[X32:%.*]] = sext i16 %x16 to i32
>>> -; CHECK-NEXT: [[B:%.*]] = mul i32 [[X32]], %y32
>>> -; CHECK-NEXT: [[R:%.*]] = trunc i32 [[B]] to i16
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 %y32 to i16
>>> +; CHECK-NEXT: [[R:%.*]] = mul i16 [[TMP1]], %x16
>>> ; CHECK-NEXT: ret i16 [[R]]
>>> ;
>>> %x32 = sext i16 %x16 to i32
>>> @@ -119,9 +110,8 @@ define i16 @narrow_sext_mul(i16 %x16, i3
>>>
>>> define i16 @narrow_zext_mul(i16 %x16, i32 %y32) {
>>> ; CHECK-LABEL: @narrow_zext_mul(
>>> -; CHECK-NEXT: [[X32:%.*]] = zext i16 %x16 to i32
>>> -; CHECK-NEXT: [[B:%.*]] = mul i32 [[X32]], %y32
>>> -; CHECK-NEXT: [[R:%.*]] = trunc i32 [[B]] to i16
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 %y32 to i16
>>> +; CHECK-NEXT: [[R:%.*]] = mul i16 [[TMP1]], %x16
>>> ; CHECK-NEXT: ret i16 [[R]]
>>> ;
>>> %x32 = zext i16 %x16 to i32
>>> @@ -130,15 +120,14 @@ define i16 @narrow_zext_mul(i16 %x16, i3
>>> ret i16 %r
>>> }
>>>
>>> -; Verify that the commuted patterns work. The div is to ensure that
>>> complexity-based
>>> +; Verify that the commuted patterns work. The div is to ensure that
>>> complexity-based
>>> ; canonicalization doesn't swap the binop operands. Use vector types to
>>> show those work too.
>>>
>>> define <2 x i16> @narrow_sext_and_commute(<2 x i16> %x16, <2 x i32>
>>> %y32) {
>>> ; CHECK-LABEL: @narrow_sext_and_commute(
>>> ; CHECK-NEXT: [[Y32OP0:%.*]] = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> -; CHECK-NEXT: [[X321:%.*]] = zext <2 x i16> %x16 to <2 x i32>
>>> -; CHECK-NEXT: [[B:%.*]] = and <2 x i32> [[Y32OP0]], [[X321]]
>>> -; CHECK-NEXT: [[R:%.*]] = trunc <2 x i32> [[B]] to <2 x i16>
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i32> [[Y32OP0]] to <2 x i16>
>>> +; CHECK-NEXT: [[R:%.*]] = and <2 x i16> [[TMP1]], %x16
>>> ; CHECK-NEXT: ret <2 x i16> [[R]]
>>> ;
>>> %y32op0 = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> @@ -151,9 +140,8 @@ define <2 x i16> @narrow_sext_and_commut
>>> define <2 x i16> @narrow_zext_and_commute(<2 x i16> %x16, <2 x i32>
>>> %y32) {
>>> ; CHECK-LABEL: @narrow_zext_and_commute(
>>> ; CHECK-NEXT: [[Y32OP0:%.*]] = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> -; CHECK-NEXT: [[X32:%.*]] = zext <2 x i16> %x16 to <2 x i32>
>>> -; CHECK-NEXT: [[B:%.*]] = and <2 x i32> [[Y32OP0]], [[X32]]
>>> -; CHECK-NEXT: [[R:%.*]] = trunc <2 x i32> [[B]] to <2 x i16>
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i32> [[Y32OP0]] to <2 x i16>
>>> +; CHECK-NEXT: [[R:%.*]] = and <2 x i16> [[TMP1]], %x16
>>> ; CHECK-NEXT: ret <2 x i16> [[R]]
>>> ;
>>> %y32op0 = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> @@ -166,9 +154,8 @@ define <2 x i16> @narrow_zext_and_commut
>>> define <2 x i16> @narrow_sext_or_commute(<2 x i16> %x16, <2 x i32>
>>> %y32) {
>>> ; CHECK-LABEL: @narrow_sext_or_commute(
>>> ; CHECK-NEXT: [[Y32OP0:%.*]] = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> -; CHECK-NEXT: [[X321:%.*]] = zext <2 x i16> %x16 to <2 x i32>
>>> -; CHECK-NEXT: [[B:%.*]] = or <2 x i32> [[Y32OP0]], [[X321]]
>>> -; CHECK-NEXT: [[R:%.*]] = trunc <2 x i32> [[B]] to <2 x i16>
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i32> [[Y32OP0]] to <2 x i16>
>>> +; CHECK-NEXT: [[R:%.*]] = or <2 x i16> [[TMP1]], %x16
>>> ; CHECK-NEXT: ret <2 x i16> [[R]]
>>> ;
>>> %y32op0 = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> @@ -181,9 +168,8 @@ define <2 x i16> @narrow_sext_or_commute
>>> define <2 x i16> @narrow_zext_or_commute(<2 x i16> %x16, <2 x i32>
>>> %y32) {
>>> ; CHECK-LABEL: @narrow_zext_or_commute(
>>> ; CHECK-NEXT: [[Y32OP0:%.*]] = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> -; CHECK-NEXT: [[X32:%.*]] = zext <2 x i16> %x16 to <2 x i32>
>>> -; CHECK-NEXT: [[B:%.*]] = or <2 x i32> [[Y32OP0]], [[X32]]
>>> -; CHECK-NEXT: [[R:%.*]] = trunc <2 x i32> [[B]] to <2 x i16>
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i32> [[Y32OP0]] to <2 x i16>
>>> +; CHECK-NEXT: [[R:%.*]] = or <2 x i16> [[TMP1]], %x16
>>> ; CHECK-NEXT: ret <2 x i16> [[R]]
>>> ;
>>> %y32op0 = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> @@ -196,9 +182,8 @@ define <2 x i16> @narrow_zext_or_commute
>>> define <2 x i16> @narrow_sext_xor_commute(<2 x i16> %x16, <2 x i32>
>>> %y32) {
>>> ; CHECK-LABEL: @narrow_sext_xor_commute(
>>> ; CHECK-NEXT: [[Y32OP0:%.*]] = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> -; CHECK-NEXT: [[X321:%.*]] = zext <2 x i16> %x16 to <2 x i32>
>>> -; CHECK-NEXT: [[B:%.*]] = xor <2 x i32> [[Y32OP0]], [[X321]]
>>> -; CHECK-NEXT: [[R:%.*]] = trunc <2 x i32> [[B]] to <2 x i16>
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i32> [[Y32OP0]] to <2 x i16>
>>> +; CHECK-NEXT: [[R:%.*]] = xor <2 x i16> [[TMP1]], %x16
>>> ; CHECK-NEXT: ret <2 x i16> [[R]]
>>> ;
>>> %y32op0 = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> @@ -211,9 +196,8 @@ define <2 x i16> @narrow_sext_xor_commut
>>> define <2 x i16> @narrow_zext_xor_commute(<2 x i16> %x16, <2 x i32>
>>> %y32) {
>>> ; CHECK-LABEL: @narrow_zext_xor_commute(
>>> ; CHECK-NEXT: [[Y32OP0:%.*]] = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> -; CHECK-NEXT: [[X32:%.*]] = zext <2 x i16> %x16 to <2 x i32>
>>> -; CHECK-NEXT: [[B:%.*]] = xor <2 x i32> [[Y32OP0]], [[X32]]
>>> -; CHECK-NEXT: [[R:%.*]] = trunc <2 x i32> [[B]] to <2 x i16>
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i32> [[Y32OP0]] to <2 x i16>
>>> +; CHECK-NEXT: [[R:%.*]] = xor <2 x i16> [[TMP1]], %x16
>>> ; CHECK-NEXT: ret <2 x i16> [[R]]
>>> ;
>>> %y32op0 = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> @@ -226,9 +210,8 @@ define <2 x i16> @narrow_zext_xor_commut
>>> define <2 x i16> @narrow_sext_add_commute(<2 x i16> %x16, <2 x i32>
>>> %y32) {
>>> ; CHECK-LABEL: @narrow_sext_add_commute(
>>> ; CHECK-NEXT: [[Y32OP0:%.*]] = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> -; CHECK-NEXT: [[X321:%.*]] = zext <2 x i16> %x16 to <2 x i32>
>>> -; CHECK-NEXT: [[B:%.*]] = add <2 x i32> [[Y32OP0]], [[X321]]
>>> -; CHECK-NEXT: [[R:%.*]] = trunc <2 x i32> [[B]] to <2 x i16>
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i32> [[Y32OP0]] to <2 x i16>
>>> +; CHECK-NEXT: [[R:%.*]] = add <2 x i16> [[TMP1]], %x16
>>> ; CHECK-NEXT: ret <2 x i16> [[R]]
>>> ;
>>> %y32op0 = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> @@ -241,9 +224,8 @@ define <2 x i16> @narrow_sext_add_commut
>>> define <2 x i16> @narrow_zext_add_commute(<2 x i16> %x16, <2 x i32>
>>> %y32) {
>>> ; CHECK-LABEL: @narrow_zext_add_commute(
>>> ; CHECK-NEXT: [[Y32OP0:%.*]] = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> -; CHECK-NEXT: [[X32:%.*]] = zext <2 x i16> %x16 to <2 x i32>
>>> -; CHECK-NEXT: [[B:%.*]] = add <2 x i32> [[Y32OP0]], [[X32]]
>>> -; CHECK-NEXT: [[R:%.*]] = trunc <2 x i32> [[B]] to <2 x i16>
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i32> [[Y32OP0]] to <2 x i16>
>>> +; CHECK-NEXT: [[R:%.*]] = add <2 x i16> [[TMP1]], %x16
>>> ; CHECK-NEXT: ret <2 x i16> [[R]]
>>> ;
>>> %y32op0 = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> @@ -256,9 +238,8 @@ define <2 x i16> @narrow_zext_add_commut
>>> define <2 x i16> @narrow_sext_mul_commute(<2 x i16> %x16, <2 x i32>
>>> %y32) {
>>> ; CHECK-LABEL: @narrow_sext_mul_commute(
>>> ; CHECK-NEXT: [[Y32OP0:%.*]] = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> -; CHECK-NEXT: [[X32:%.*]] = sext <2 x i16> %x16 to <2 x i32>
>>> -; CHECK-NEXT: [[B:%.*]] = mul <2 x i32> [[Y32OP0]], [[X32]]
>>> -; CHECK-NEXT: [[R:%.*]] = trunc <2 x i32> [[B]] to <2 x i16>
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i32> [[Y32OP0]] to <2 x i16>
>>> +; CHECK-NEXT: [[R:%.*]] = mul <2 x i16> [[TMP1]], %x16
>>> ; CHECK-NEXT: ret <2 x i16> [[R]]
>>> ;
>>> %y32op0 = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> @@ -271,9 +252,8 @@ define <2 x i16> @narrow_sext_mul_commut
>>> define <2 x i16> @narrow_zext_mul_commute(<2 x i16> %x16, <2 x i32>
>>> %y32) {
>>> ; CHECK-LABEL: @narrow_zext_mul_commute(
>>> ; CHECK-NEXT: [[Y32OP0:%.*]] = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>> -; CHECK-NEXT: [[X32:%.*]] = zext <2 x i16> %x16 to <2 x i32>
>>> -; CHECK-NEXT: [[B:%.*]] = mul <2 x i32> [[Y32OP0]], [[X32]]
>>> -; CHECK-NEXT: [[R:%.*]] = trunc <2 x i32> [[B]] to <2 x i16>
>>> +; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i32> [[Y32OP0]] to <2 x i16>
>>> +; CHECK-NEXT: [[R:%.*]] = mul <2 x i16> [[TMP1]], %x16
>>> ; CHECK-NEXT: ret <2 x i16> [[R]]
>>> ;
>>> %y32op0 = sdiv <2 x i32> %y32, <i32 7, i32 -17>
>>>
>>>
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>>>
>>
>
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