[llvm] eee0352 - [LICM] Regenerate test checks (NFC)
Nikita Popov via llvm-commits
llvm-commits at lists.llvm.org
Mon Nov 29 12:28:47 PST 2021
Author: Nikita Popov
Date: 2021-11-29T21:28:33+01:00
New Revision: eee035235ebd76b0e1b62f6dec989874a3102233
URL: https://github.com/llvm/llvm-project/commit/eee035235ebd76b0e1b62f6dec989874a3102233
DIFF: https://github.com/llvm/llvm-project/commit/eee035235ebd76b0e1b62f6dec989874a3102233.diff
LOG: [LICM] Regenerate test checks (NFC)
Added:
Modified:
llvm/test/Transforms/LICM/scalar-promote-memmodel.ll
llvm/test/Transforms/LICM/scalar-promote.ll
Removed:
################################################################################
diff --git a/llvm/test/Transforms/LICM/scalar-promote-memmodel.ll b/llvm/test/Transforms/LICM/scalar-promote-memmodel.ll
index e858a251f649d..c3bae731fb6bc 100644
--- a/llvm/test/Transforms/LICM/scalar-promote-memmodel.ll
+++ b/llvm/test/Transforms/LICM/scalar-promote-memmodel.ll
@@ -1,3 +1,4 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -basic-aa -licm -S | FileCheck %s
; RUN: opt -aa-pipeline=tbaa,basic-aa -passes='require<aa>,require<targetir>,require<scalar-evolution>,require<opt-remark-emit>,loop-mssa(licm)' -S %s | FileCheck %s
@@ -7,6 +8,27 @@
@g = common global i32 0, align 4
define void @bar(i32 %n, i32 %b) nounwind uwtable ssp {
+; CHECK-LABEL: @bar(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[B:%.*]], 0
+; CHECK-NEXT: br label [[FOR_COND:%.*]]
+; CHECK: for.cond:
+; CHECK-NEXT: [[I_0:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC5:%.*]], [[FOR_INC:%.*]] ]
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I_0]], [[N:%.*]]
+; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_END:%.*]]
+; CHECK: for.body:
+; CHECK-NEXT: br i1 [[TOBOOL]], label [[FOR_INC]], label [[IF_THEN:%.*]]
+; CHECK: if.then:
+; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* @g, align 4
+; CHECK-NEXT: [[INC:%.*]] = add nsw i32 [[TMP3]], 1
+; CHECK-NEXT: store i32 [[INC]], i32* @g, align 4
+; CHECK-NEXT: br label [[FOR_INC]]
+; CHECK: for.inc:
+; CHECK-NEXT: [[INC5]] = add nsw i32 [[I_0]], 1
+; CHECK-NEXT: br label [[FOR_COND]]
+; CHECK: for.end:
+; CHECK-NEXT: ret void
+;
entry:
br label %for.cond
@@ -25,9 +47,6 @@ if.then: ; preds = %for.body
store i32 %inc, i32* @g, align 4
br label %for.inc
-; CHECK: load i32, i32*
-; CHECK-NEXT: add
-; CHECK-NEXT: store i32
for.inc: ; preds = %for.body, %if.then
%inc5 = add nsw i32 %i.0, 1
diff --git a/llvm/test/Transforms/LICM/scalar-promote.ll b/llvm/test/Transforms/LICM/scalar-promote.ll
index f2c82b9579c98..290e990f85133 100644
--- a/llvm/test/Transforms/LICM/scalar-promote.ll
+++ b/llvm/test/Transforms/LICM/scalar-promote.ll
@@ -1,3 +1,4 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -basic-aa -tbaa -licm -S | FileCheck %s
; RUN: opt -aa-pipeline=tbaa,basic-aa -passes='require<aa>,require<targetir>,require<scalar-evolution>,require<opt-remark-emit>,loop-mssa(licm)' -S %s | FileCheck %s
target datalayout = "E-p:64:64:64-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"
@@ -5,13 +6,24 @@ target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:1
@X = global i32 7 ; <i32*> [#uses=4]
define void @test1(i32 %i) {
+; CHECK-LABEL: @test1(
+; CHECK-NEXT: Entry:
+; CHECK-NEXT: [[X_PROMOTED:%.*]] = load i32, i32* @X, align 4
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: Loop:
+; CHECK-NEXT: [[X21:%.*]] = phi i32 [ [[X_PROMOTED]], [[ENTRY:%.*]] ], [ [[X2:%.*]], [[LOOP]] ]
+; CHECK-NEXT: [[J:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[NEXT:%.*]], [[LOOP]] ]
+; CHECK-NEXT: [[X2]] = add i32 [[X21]], 1
+; CHECK-NEXT: [[NEXT]] = add i32 [[J]], 1
+; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[NEXT]], 0
+; CHECK-NEXT: br i1 [[COND]], label [[OUT:%.*]], label [[LOOP]]
+; CHECK: Out:
+; CHECK-NEXT: [[X2_LCSSA:%.*]] = phi i32 [ [[X2]], [[LOOP]] ]
+; CHECK-NEXT: store i32 [[X2_LCSSA]], i32* @X, align 4
+; CHECK-NEXT: ret void
+;
Entry:
br label %Loop
-; CHECK-LABEL: @test1(
-; CHECK: Entry:
-; CHECK-NEXT: load i32, i32* @X
-; CHECK-NEXT: br label %Loop
-
Loop: ; preds = %Loop, %0
%j = phi i32 [ 0, %Entry ], [ %Next, %Loop ] ; <i32> [#uses=1]
@@ -24,20 +36,24 @@ Loop: ; preds = %Loop, %0
Out:
ret void
-; CHECK: Out:
-; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %x2
-; CHECK-NEXT: store i32 %[[LCSSAPHI]], i32* @X
-; CHECK-NEXT: ret void
-
}
define void @test2(i32 %i) {
+; CHECK-LABEL: @test2(
+; CHECK-NEXT: Entry:
+; CHECK-NEXT: [[DOTPROMOTED:%.*]] = load i32, i32* getelementptr inbounds (i32, i32* @X, i64 1), align 4
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: Loop:
+; CHECK-NEXT: [[V1:%.*]] = phi i32 [ [[V:%.*]], [[LOOP]] ], [ [[DOTPROMOTED]], [[ENTRY:%.*]] ]
+; CHECK-NEXT: [[V]] = add i32 [[V1]], 1
+; CHECK-NEXT: br i1 false, label [[LOOP]], label [[EXIT:%.*]]
+; CHECK: Exit:
+; CHECK-NEXT: [[V_LCSSA:%.*]] = phi i32 [ [[V]], [[LOOP]] ]
+; CHECK-NEXT: store i32 [[V_LCSSA]], i32* getelementptr inbounds (i32, i32* @X, i64 1), align 4
+; CHECK-NEXT: ret void
+;
Entry:
br label %Loop
-; CHECK-LABEL: @test2(
-; CHECK: Entry:
-; CHECK-NEXT: %.promoted = load i32, i32* getelementptr inbounds (i32, i32* @X, i64 1)
-; CHECK-NEXT: br label %Loop
Loop: ; preds = %Loop, %0
%X1 = getelementptr i32, i32* @X, i64 1 ; <i32*> [#uses=1]
@@ -49,39 +65,45 @@ Loop: ; preds = %Loop, %0
Exit: ; preds = %Loop
ret void
-; CHECK: Exit:
-; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %V
-; CHECK-NEXT: store i32 %[[LCSSAPHI]], i32* getelementptr inbounds (i32, i32* @X, i64 1)
-; CHECK-NEXT: ret void
}
-
-
define void @test3(i32 %i) {
; CHECK-LABEL: @test3(
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: Loop:
+; CHECK-NEXT: [[X:%.*]] = load volatile i32, i32* @X, align 4
+; CHECK-NEXT: [[X2:%.*]] = add i32 [[X]], 1
+; CHECK-NEXT: store i32 [[X2]], i32* @X, align 4
+; CHECK-NEXT: br i1 true, label [[OUT:%.*]], label [[LOOP]]
+; CHECK: Out:
+; CHECK-NEXT: ret void
+;
br label %Loop
Loop:
- ; Should not promote this to a register
+ ; Should not promote this to a register
%x = load volatile i32, i32* @X
%x2 = add i32 %x, 1
store i32 %x2, i32* @X
br i1 true, label %Out, label %Loop
-; CHECK: Loop:
-; CHECK-NEXT: load volatile
-
Out: ; preds = %Loop
ret void
}
+; Should not promote this to a register
define void @test3b(i32 %i) {
; CHECK-LABEL: @test3b(
-; CHECK-LABEL: Loop:
-; CHECK: store volatile
-; CHECK-LABEL: Out:
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: Loop:
+; CHECK-NEXT: [[X:%.*]] = load i32, i32* @X, align 4
+; CHECK-NEXT: [[X2:%.*]] = add i32 [[X]], 1
+; CHECK-NEXT: store volatile i32 [[X2]], i32* @X, align 4
+; CHECK-NEXT: br i1 true, label [[OUT:%.*]], label [[LOOP]]
+; CHECK: Out:
+; CHECK-NEXT: ret void
+;
br label %Loop
Loop:
- ; Should not promote this to a register
%x = load i32, i32* @X
%x2 = add i32 %x, 1
store volatile i32 %x2, i32* @X
@@ -92,8 +114,36 @@ Out: ; preds = %Loop
}
; PR8041
+; Should have promoted 'handle2' accesses.
+; Should not have promoted offsetx1 loads.
define void @test4(i8* %x, i8 %n) {
; CHECK-LABEL: @test4(
+; CHECK-NEXT: [[HANDLE1:%.*]] = alloca i8*, align 8
+; CHECK-NEXT: [[HANDLE2:%.*]] = alloca i8*, align 8
+; CHECK-NEXT: store i8* [[X:%.*]], i8** [[HANDLE1]], align 8
+; CHECK-NEXT: [[TMP:%.*]] = getelementptr i8, i8* [[X]], i64 8
+; CHECK-NEXT: [[OFFSETX1:%.*]] = load i8*, i8** [[HANDLE1]], align 8
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: br label [[SUBLOOP:%.*]]
+; CHECK: subloop:
+; CHECK-NEXT: [[NEWOFFSETX21:%.*]] = phi i8* [ [[TMP]], [[LOOP]] ], [ [[NEWOFFSETX2:%.*]], [[SUBLOOP]] ]
+; CHECK-NEXT: [[COUNT:%.*]] = phi i8 [ 0, [[LOOP]] ], [ [[NEXTCOUNT:%.*]], [[SUBLOOP]] ]
+; CHECK-NEXT: store i8 [[N:%.*]], i8* [[NEWOFFSETX21]], align 1
+; CHECK-NEXT: [[NEWOFFSETX2]] = getelementptr i8, i8* [[NEWOFFSETX21]], i64 -1
+; CHECK-NEXT: [[NEXTCOUNT]] = add i8 [[COUNT]], 1
+; CHECK-NEXT: [[INNEREXITCOND:%.*]] = icmp sge i8 [[NEXTCOUNT]], 8
+; CHECK-NEXT: br i1 [[INNEREXITCOND]], label [[INNEREXIT:%.*]], label [[SUBLOOP]]
+; CHECK: innerexit:
+; CHECK-NEXT: [[NEWOFFSETX2_LCSSA:%.*]] = phi i8* [ [[NEWOFFSETX2]], [[SUBLOOP]] ]
+; CHECK-NEXT: [[VAL:%.*]] = load i8, i8* [[OFFSETX1]], align 1
+; CHECK-NEXT: [[COND:%.*]] = icmp eq i8 [[VAL]], [[N]]
+; CHECK-NEXT: br i1 [[COND]], label [[EXIT:%.*]], label [[LOOP]]
+; CHECK: exit:
+; CHECK-NEXT: [[NEWOFFSETX2_LCSSA_LCSSA:%.*]] = phi i8* [ [[NEWOFFSETX2_LCSSA]], [[INNEREXIT]] ]
+; CHECK-NEXT: store i8* [[NEWOFFSETX2_LCSSA_LCSSA]], i8** [[HANDLE2]], align 8
+; CHECK-NEXT: ret void
+;
%handle1 = alloca i8*
%handle2 = alloca i8*
store i8* %x, i8** %handle1
@@ -114,38 +164,36 @@ subloop:
%innerexitcond = icmp sge i8 %nextcount, 8
br i1 %innerexitcond, label %innerexit, label %subloop
-; Should have promoted 'handle2' accesses.
-; CHECK: subloop:
-; CHECK-NEXT: phi i8* [
-; CHECK-NEXT: %count = phi i8 [
-; CHECK-NEXT: store i8 %n
-; CHECK-NOT: store
-; CHECK: br i1
-
innerexit:
%offsetx1 = load i8*, i8** %handle1
%val = load i8, i8* %offsetx1
%cond = icmp eq i8 %val, %n
br i1 %cond, label %exit, label %loop
-; Should not have promoted offsetx1 loads.
-; CHECK: innerexit:
-; CHECK: %val = load i8, i8* %offsetx1
-; CHECK: %cond = icmp eq i8 %val, %n
-; CHECK: br i1 %cond, label %exit, label %loop
-
exit:
ret void
}
define void @test5(i32 %i, i32** noalias %P2) {
+; CHECK-LABEL: @test5(
+; CHECK-NEXT: Entry:
+; CHECK-NEXT: [[X_PROMOTED:%.*]] = load i32, i32* @X, align 4
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: Loop:
+; CHECK-NEXT: [[X21:%.*]] = phi i32 [ [[X_PROMOTED]], [[ENTRY:%.*]] ], [ [[X2:%.*]], [[LOOP]] ]
+; CHECK-NEXT: [[J:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[NEXT:%.*]], [[LOOP]] ]
+; CHECK-NEXT: [[X2]] = add i32 [[X21]], 1
+; CHECK-NEXT: store atomic i32* @X, i32** [[P2:%.*]] monotonic, align 8
+; CHECK-NEXT: [[NEXT]] = add i32 [[J]], 1
+; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[NEXT]], 0
+; CHECK-NEXT: br i1 [[COND]], label [[OUT:%.*]], label [[LOOP]]
+; CHECK: Out:
+; CHECK-NEXT: [[X2_LCSSA:%.*]] = phi i32 [ [[X2]], [[LOOP]] ]
+; CHECK-NEXT: store i32 [[X2_LCSSA]], i32* @X, align 4
+; CHECK-NEXT: ret void
+;
Entry:
br label %Loop
-; CHECK-LABEL: @test5(
-; CHECK: Entry:
-; CHECK-NEXT: load i32, i32* @X
-; CHECK-NEXT: br label %Loop
-
Loop: ; preds = %Loop, %0
%j = phi i32 [ 0, %Entry ], [ %Next, %Loop ] ; <i32> [#uses=1]
@@ -153,7 +201,7 @@ Loop: ; preds = %Loop, %0
%x2 = add i32 %x, 1 ; <i32> [#uses=1]
store i32 %x2, i32* @X
- store atomic i32* @X, i32** %P2 monotonic, align 8
+ store atomic i32* @X, i32** %P2 monotonic, align 8
%Next = add i32 %j, 1 ; <i32> [#uses=2]
%cond = icmp eq i32 %Next, 0 ; <i1> [#uses=1]
@@ -161,16 +209,36 @@ Loop: ; preds = %Loop, %0
Out:
ret void
-; CHECK: Out:
-; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %x2
-; CHECK-NEXT: store i32 %[[LCSSAPHI]], i32* @X
-; CHECK-NEXT: ret void
}
; PR14753 - Preserve TBAA tags when promoting values in a loop.
define void @test6(i32 %n, float* nocapture %a, i32* %gi) {
+; CHECK-LABEL: @test6(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: store i32 0, i32* [[GI:%.*]], align 4, !tbaa [[TBAA0:![0-9]+]]
+; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 0, [[N:%.*]]
+; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
+; CHECK: for.body.lr.ph:
+; CHECK-NEXT: [[GI_PROMOTED:%.*]] = load i32, i32* [[GI]], align 4, !tbaa [[TBAA0]]
+; CHECK-NEXT: br label [[FOR_BODY:%.*]]
+; CHECK: for.body:
+; CHECK-NEXT: [[INC1:%.*]] = phi i32 [ [[GI_PROMOTED]], [[FOR_BODY_LR_PH]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
+; CHECK-NEXT: [[STOREMERGE2:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[INC]], [[FOR_BODY]] ]
+; CHECK-NEXT: [[IDXPROM:%.*]] = sext i32 [[STOREMERGE2]] to i64
+; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[IDXPROM]]
+; CHECK-NEXT: store float 0.000000e+00, float* [[ARRAYIDX]], align 4, !tbaa [[TBAA4:![0-9]+]]
+; CHECK-NEXT: [[INC]] = add nsw i32 [[INC1]], 1
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[INC]], [[N]]
+; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_FOR_END_CRIT_EDGE:%.*]]
+; CHECK: for.cond.for.end_crit_edge:
+; CHECK-NEXT: [[INC_LCSSA:%.*]] = phi i32 [ [[INC]], [[FOR_BODY]] ]
+; CHECK-NEXT: store i32 [[INC_LCSSA]], i32* [[GI]], align 4, !tbaa [[TBAA0]]
+; CHECK-NEXT: br label [[FOR_END]]
+; CHECK: for.end:
+; CHECK-NEXT: ret void
+;
entry:
store i32 0, i32* %gi, align 4, !tbaa !0
%cmp1 = icmp slt i32 0, %n
@@ -196,11 +264,6 @@ for.cond.for.end_crit_edge: ; preds = %for.body
for.end: ; preds = %for.cond.for.end_crit_edge, %entry
ret void
-; CHECK: for.body.lr.ph:
-; CHECK-NEXT: %gi.promoted = load i32, i32* %gi, align 4, !tbaa !0
-; CHECK: for.cond.for.end_crit_edge:
-; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %inc
-; CHECK-NEXT: store i32 %[[LCSSAPHI]], i32* %gi, align 4, !tbaa !0
}
declare i32 @opaque(i32) argmemonly
@@ -209,16 +272,24 @@ declare void @capture(i32*)
; We can promote even if opaque may throw.
define i32 @test7() {
; CHECK-LABEL: @test7(
-; CHECK: entry:
-; CHECK-NEXT: %local = alloca
-; CHECK-NEXT: call void @capture(i32* %local)
-; CHECK-NEXT: load i32, i32* %local
-; CHECK-NEXT: br label %loop
-; CHECK: exit:
-; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %x2, %loop ]
-; CHECK-NEXT: store i32 %[[LCSSAPHI]], i32* %local
-; CHECK-NEXT: %ret = load i32, i32* %local
-; CHECK-NEXT: ret i32 %ret
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[LOCAL:%.*]] = alloca i32, align 4
+; CHECK-NEXT: call void @capture(i32* [[LOCAL]])
+; CHECK-NEXT: [[LOCAL_PROMOTED:%.*]] = load i32, i32* [[LOCAL]], align 4
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[X21:%.*]] = phi i32 [ [[LOCAL_PROMOTED]], [[ENTRY:%.*]] ], [ [[X2:%.*]], [[LOOP]] ]
+; CHECK-NEXT: [[J:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[NEXT:%.*]], [[LOOP]] ]
+; CHECK-NEXT: [[X2]] = call i32 @opaque(i32 [[X21]])
+; CHECK-NEXT: [[NEXT]] = add i32 [[J]], 1
+; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[NEXT]], 0
+; CHECK-NEXT: br i1 [[COND]], label [[EXIT:%.*]], label [[LOOP]]
+; CHECK: exit:
+; CHECK-NEXT: [[X2_LCSSA:%.*]] = phi i32 [ [[X2]], [[LOOP]] ]
+; CHECK-NEXT: store i32 [[X2_LCSSA]], i32* [[LOCAL]], align 4
+; CHECK-NEXT: [[RET:%.*]] = load i32, i32* [[LOCAL]], align 4
+; CHECK-NEXT: ret i32 [[RET]]
+;
entry:
%local = alloca i32
call void @capture(i32* %local)
@@ -241,19 +312,30 @@ exit:
; Make sure we don't promote if the store is really control-flow dependent.
define i32 @test7bad() {
; CHECK-LABEL: @test7bad(
-; CHECK: entry:
-; CHECK-NEXT: %local = alloca
-; CHECK-NEXT: call void @capture(i32* %local)
-; CHECK-NEXT: br label %loop
-; CHECK: if:
-; CHECK-NEXT: store i32 %x2, i32* %local
-; CHECK-NEXT: br label %else
-; CHECK: exit:
-; CHECK-NEXT: %ret = load i32, i32* %local
-; CHECK-NEXT: ret i32 %ret
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[LOCAL:%.*]] = alloca i32, align 4
+; CHECK-NEXT: call void @capture(i32* [[LOCAL]])
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[J:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[NEXT:%.*]], [[ELSE:%.*]] ]
+; CHECK-NEXT: [[X:%.*]] = load i32, i32* [[LOCAL]], align 4
+; CHECK-NEXT: [[X2:%.*]] = call i32 @opaque(i32 [[X]])
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X2]], 0
+; CHECK-NEXT: br i1 [[CMP]], label [[IF:%.*]], label [[ELSE]]
+; CHECK: if:
+; CHECK-NEXT: store i32 [[X2]], i32* [[LOCAL]], align 4
+; CHECK-NEXT: br label [[ELSE]]
+; CHECK: else:
+; CHECK-NEXT: [[NEXT]] = add i32 [[J]], 1
+; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[NEXT]], 0
+; CHECK-NEXT: br i1 [[COND]], label [[EXIT:%.*]], label [[LOOP]]
+; CHECK: exit:
+; CHECK-NEXT: [[RET:%.*]] = load i32, i32* [[LOCAL]], align 4
+; CHECK-NEXT: ret i32 [[RET]]
+;
entry:
%local = alloca i32
- call void @capture(i32* %local)
+ call void @capture(i32* %local)
br label %loop
loop:
%j = phi i32 [ 0, %entry ], [ %next, %else ]
@@ -262,7 +344,7 @@ loop:
%cmp = icmp eq i32 %x2, 0
br i1 %cmp, label %if, label %else
-if:
+if:
store i32 %x2, i32* %local
br label %else
@@ -281,25 +363,34 @@ exit:
; doesn't block us, because %local is always dereferenceable.
define i32 @test8() {
; CHECK-LABEL: @test8(
-; CHECK: entry:
-; CHECK-NEXT: %local = alloca
-; CHECK-NEXT: call void @capture(i32* %local)
-; CHECK-NEXT: load i32, i32* %local
-; CHECK-NEXT: br label %loop
-; CHECK: exit:
-; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %x2, %loop ]
-; CHECK-NEXT: store i32 %[[LCSSAPHI]], i32* %local
-; CHECK-NEXT: %ret = load i32, i32* %local
-; CHECK-NEXT: ret i32 %ret
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[LOCAL:%.*]] = alloca i32, align 4
+; CHECK-NEXT: call void @capture(i32* [[LOCAL]])
+; CHECK-NEXT: [[LOCAL_PROMOTED:%.*]] = load i32, i32* [[LOCAL]], align 4
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[X21:%.*]] = phi i32 [ [[LOCAL_PROMOTED]], [[ENTRY:%.*]] ], [ [[X2:%.*]], [[LOOP]] ]
+; CHECK-NEXT: [[J:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[NEXT:%.*]], [[LOOP]] ]
+; CHECK-NEXT: [[THROWAWAY:%.*]] = call i32 @opaque(i32 [[J]])
+; CHECK-NEXT: [[X2]] = call i32 @opaque(i32 [[X21]])
+; CHECK-NEXT: [[NEXT]] = add i32 [[J]], 1
+; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[NEXT]], 0
+; CHECK-NEXT: br i1 [[COND]], label [[EXIT:%.*]], label [[LOOP]]
+; CHECK: exit:
+; CHECK-NEXT: [[X2_LCSSA:%.*]] = phi i32 [ [[X2]], [[LOOP]] ]
+; CHECK-NEXT: store i32 [[X2_LCSSA]], i32* [[LOCAL]], align 4
+; CHECK-NEXT: [[RET:%.*]] = load i32, i32* [[LOCAL]], align 4
+; CHECK-NEXT: ret i32 [[RET]]
+;
entry:
%local = alloca i32
- call void @capture(i32* %local)
+ call void @capture(i32* %local)
br label %loop
loop:
%j = phi i32 [ 0, %entry ], [ %next, %loop ]
%throwaway = call i32 @opaque(i32 %j)
- %x = load i32, i32* %local
+ %x = load i32, i32* %local
%x2 = call i32 @opaque(i32 %x)
store i32 %x2, i32* %local
%next = add i32 %j, 1
@@ -317,28 +408,42 @@ exit:
; dereferenceable
define i32 @test9() {
; CHECK-LABEL: @test9(
-; CHECK: entry:
-; CHECK-NEXT: %local = alloca
-; CHECK-NEXT: call void @capture(i32* %local)
-; CHECK-NEXT: load i32, i32* %local
-; CHECK-NEXT: br label %loop
-; CHECK: exit:
-; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %x2, %else ]
-; CHECK-NEXT: store i32 %[[LCSSAPHI]], i32* %local
-; CHECK-NEXT: %ret = load i32, i32* %local
-; CHECK-NEXT: ret i32 %ret
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[LOCAL:%.*]] = alloca i32, align 4
+; CHECK-NEXT: call void @capture(i32* [[LOCAL]])
+; CHECK-NEXT: [[LOCAL_PROMOTED:%.*]] = load i32, i32* [[LOCAL]], align 4
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[X21:%.*]] = phi i32 [ [[LOCAL_PROMOTED]], [[ENTRY:%.*]] ], [ [[X2:%.*]], [[ELSE:%.*]] ]
+; CHECK-NEXT: [[J:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[NEXT:%.*]], [[ELSE]] ]
+; CHECK-NEXT: [[J2:%.*]] = call i32 @opaque(i32 [[J]])
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[J2]], 0
+; CHECK-NEXT: br i1 [[CMP]], label [[IF:%.*]], label [[ELSE]]
+; CHECK: if:
+; CHECK-NEXT: br label [[ELSE]]
+; CHECK: else:
+; CHECK-NEXT: [[X2]] = phi i32 [ 0, [[LOOP]] ], [ [[X21]], [[IF]] ]
+; CHECK-NEXT: [[NEXT]] = add i32 [[J]], 1
+; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[NEXT]], 0
+; CHECK-NEXT: br i1 [[COND]], label [[EXIT:%.*]], label [[LOOP]]
+; CHECK: exit:
+; CHECK-NEXT: [[X2_LCSSA:%.*]] = phi i32 [ [[X2]], [[ELSE]] ]
+; CHECK-NEXT: store i32 [[X2_LCSSA]], i32* [[LOCAL]], align 4
+; CHECK-NEXT: [[RET:%.*]] = load i32, i32* [[LOCAL]], align 4
+; CHECK-NEXT: ret i32 [[RET]]
+;
entry:
%local = alloca i32
- call void @capture(i32* %local)
+ call void @capture(i32* %local)
br label %loop
loop:
- %j = phi i32 [ 0, %entry ], [ %next, %else ]
+ %j = phi i32 [ 0, %entry ], [ %next, %else ]
%j2 = call i32 @opaque(i32 %j)
%cmp = icmp eq i32 %j2, 0
br i1 %cmp, label %if, label %else
-if:
+if:
%x = load i32, i32* %local
br label %else
@@ -356,30 +461,42 @@ exit:
define i32 @test9bad(i32 %i) {
; CHECK-LABEL: @test9bad(
-; CHECK: entry:
-; CHECK-NEXT: %local = alloca
-; CHECK-NEXT: call void @capture(i32* %local)
-; CHECK-NEXT: %notderef = getelementptr
-; CHECK-NEXT: br label %loop
-; CHECK: if:
-; CHECK-NEXT: load i32, i32* %notderef
-; CHECK-NEXT: br label %else
-; CHECK: exit:
-; CHECK-NEXT: %ret = load i32, i32* %notderef
-; CHECK-NEXT: ret i32 %ret
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[LOCAL:%.*]] = alloca i32, align 4
+; CHECK-NEXT: call void @capture(i32* [[LOCAL]])
+; CHECK-NEXT: [[NOTDEREF:%.*]] = getelementptr i32, i32* [[LOCAL]], i32 [[I:%.*]]
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[J:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[NEXT:%.*]], [[ELSE:%.*]] ]
+; CHECK-NEXT: [[J2:%.*]] = call i32 @opaque(i32 [[J]])
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[J2]], 0
+; CHECK-NEXT: br i1 [[CMP]], label [[IF:%.*]], label [[ELSE]]
+; CHECK: if:
+; CHECK-NEXT: [[X:%.*]] = load i32, i32* [[NOTDEREF]], align 4
+; CHECK-NEXT: br label [[ELSE]]
+; CHECK: else:
+; CHECK-NEXT: [[X2:%.*]] = phi i32 [ 0, [[LOOP]] ], [ [[X]], [[IF]] ]
+; CHECK-NEXT: store i32 [[X2]], i32* [[NOTDEREF]], align 4
+; CHECK-NEXT: [[NEXT]] = add i32 [[J]], 1
+; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[NEXT]], 0
+; CHECK-NEXT: br i1 [[COND]], label [[EXIT:%.*]], label [[LOOP]]
+; CHECK: exit:
+; CHECK-NEXT: [[RET:%.*]] = load i32, i32* [[NOTDEREF]], align 4
+; CHECK-NEXT: ret i32 [[RET]]
+;
entry:
%local = alloca i32
- call void @capture(i32* %local)
+ call void @capture(i32* %local)
%notderef = getelementptr i32, i32* %local, i32 %i
br label %loop
loop:
- %j = phi i32 [ 0, %entry ], [ %next, %else ]
+ %j = phi i32 [ 0, %entry ], [ %next, %else ]
%j2 = call i32 @opaque(i32 %j)
%cmp = icmp eq i32 %j2, 0
br i1 %cmp, label %if, label %else
-if:
+if:
%x = load i32, i32* %notderef
br label %else
@@ -396,12 +513,24 @@ exit:
}
define void @test10(i32 %i) {
+; CHECK-LABEL: @test10(
+; CHECK-NEXT: Entry:
+; CHECK-NEXT: [[X_PROMOTED:%.*]] = load atomic i32, i32* @X unordered, align 4
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: Loop:
+; CHECK-NEXT: [[X21:%.*]] = phi i32 [ [[X_PROMOTED]], [[ENTRY:%.*]] ], [ [[X2:%.*]], [[LOOP]] ]
+; CHECK-NEXT: [[J:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[NEXT:%.*]], [[LOOP]] ]
+; CHECK-NEXT: [[X2]] = add i32 [[X21]], 1
+; CHECK-NEXT: [[NEXT]] = add i32 [[J]], 1
+; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[NEXT]], 0
+; CHECK-NEXT: br i1 [[COND]], label [[OUT:%.*]], label [[LOOP]]
+; CHECK: Out:
+; CHECK-NEXT: [[X2_LCSSA:%.*]] = phi i32 [ [[X2]], [[LOOP]] ]
+; CHECK-NEXT: store atomic i32 [[X2_LCSSA]], i32* @X unordered, align 4
+; CHECK-NEXT: ret void
+;
Entry:
br label %Loop
-; CHECK-LABEL: @test10(
-; CHECK: Entry:
-; CHECK-NEXT: load atomic i32, i32* @X unordered, align 4
-; CHECK-NEXT: br label %Loop
Loop: ; preds = %Loop, %0
@@ -415,22 +544,37 @@ Loop: ; preds = %Loop, %0
Out:
ret void
-; CHECK: Out:
-; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %x2
-; CHECK-NEXT: store atomic i32 %[[LCSSAPHI]], i32* @X unordered, align 4
-; CHECK-NEXT: ret void
}
; Early exit is known not to be taken on first iteration and thus doesn't
; effect whether load is known to execute.
define void @test11(i32 %i) {
+; CHECK-LABEL: @test11(
+; CHECK-NEXT: Entry:
+; CHECK-NEXT: [[X_PROMOTED:%.*]] = load i32, i32* @X, align 4
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: Loop:
+; CHECK-NEXT: [[X21:%.*]] = phi i32 [ [[X_PROMOTED]], [[ENTRY:%.*]] ], [ [[X2:%.*]], [[BODY:%.*]] ]
+; CHECK-NEXT: [[J:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[NEXT:%.*]], [[BODY]] ]
+; CHECK-NEXT: [[EARLY_TEST:%.*]] = icmp ult i32 [[J]], 32
+; CHECK-NEXT: br i1 [[EARLY_TEST]], label [[BODY]], label [[EARLY:%.*]]
+; CHECK: body:
+; CHECK-NEXT: [[X2]] = add i32 [[X21]], 1
+; CHECK-NEXT: [[NEXT]] = add i32 [[J]], 1
+; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[NEXT]], 0
+; CHECK-NEXT: br i1 [[COND]], label [[OUT:%.*]], label [[LOOP]]
+; CHECK: Early:
+; CHECK-NEXT: [[X21_LCSSA:%.*]] = phi i32 [ [[X21]], [[LOOP]] ]
+; CHECK-NEXT: store i32 [[X21_LCSSA]], i32* @X, align 4
+; CHECK-NEXT: ret void
+; CHECK: Out:
+; CHECK-NEXT: [[X2_LCSSA:%.*]] = phi i32 [ [[X2]], [[BODY]] ]
+; CHECK-NEXT: store i32 [[X2_LCSSA]], i32* @X, align 4
+; CHECK-NEXT: ret void
+;
Entry:
br label %Loop
-; CHECK-LABEL: @test11(
-; CHECK: Entry:
-; CHECK-NEXT: load i32, i32* @X
-; CHECK-NEXT: br label %Loop
Loop: ; preds = %Loop, %0
@@ -446,17 +590,9 @@ body:
br i1 %cond, label %Out, label %Loop
Early:
-; CHECK: Early:
-; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %x2
-; CHECK-NEXT: store i32 %[[LCSSAPHI]], i32* @X
-; CHECK-NEXT: ret void
ret void
Out:
ret void
-; CHECK: Out:
-; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %x2
-; CHECK-NEXT: store i32 %[[LCSSAPHI]], i32* @X
-; CHECK-NEXT: ret void
}
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