diff options
Diffstat (limited to 'llvm/test/Transforms')
| -rw-r--r-- | llvm/test/Transforms/GVN/hoist-pr28606.ll | 50 | ||||
| -rw-r--r-- | llvm/test/Transforms/GVN/pr28626.ll | 4 |
2 files changed, 52 insertions, 2 deletions
diff --git a/llvm/test/Transforms/GVN/hoist-pr28606.ll b/llvm/test/Transforms/GVN/hoist-pr28606.ll new file mode 100644 index 00000000000..2c588283ea9 --- /dev/null +++ b/llvm/test/Transforms/GVN/hoist-pr28606.ll @@ -0,0 +1,50 @@ +; RUN: opt -gvn-hoist -S < %s | FileCheck %s + +target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32" +target triple = "i686-pc-windows-msvc18.0.0" + +%struct.S = type { i8* } + +declare void @f(<{ %struct.S }>* inalloca) + + +; Check that we don't clone the %x alloca and insert it in the live range of +; %argmem, which would break the inalloca contract. +; +; CHECK-LABEL: @test +; CHECK: alloca i8 +; CHECK: stacksave +; CHECK: alloca inalloca +; CHECK-NOT: alloca i8 + +; Check that store instructions are hoisted. +; CHECK: store i8 +; CHECK-NOT: store i8 +; CHECK: stackrestore + +define void @test(i1 %b) { +entry: + %x = alloca i8 + %inalloca.save = call i8* @llvm.stacksave() + %argmem = alloca inalloca <{ %struct.S }>, align 4 + %0 = getelementptr inbounds <{ %struct.S }>, <{ %struct.S }>* %argmem, i32 0, i32 0 + br i1 %b, label %true, label %false + +true: + %p = getelementptr inbounds %struct.S, %struct.S* %0, i32 0, i32 0 + store i8* %x, i8** %p, align 4 + br label %exit + +false: + %p2 = getelementptr inbounds %struct.S, %struct.S* %0, i32 0, i32 0 + store i8* %x, i8** %p2, align 4 + br label %exit + +exit: + call void @f(<{ %struct.S }>* inalloca %argmem) + call void @llvm.stackrestore(i8* %inalloca.save) + ret void +} + +declare i8* @llvm.stacksave() +declare void @llvm.stackrestore(i8*) diff --git a/llvm/test/Transforms/GVN/pr28626.ll b/llvm/test/Transforms/GVN/pr28626.ll index 742d968be36..7930e694825 100644 --- a/llvm/test/Transforms/GVN/pr28626.ll +++ b/llvm/test/Transforms/GVN/pr28626.ll @@ -38,5 +38,5 @@ if.end6: ; preds = %if.else3, %if.then2 ; CHECK: %[[gep0:.*]] = getelementptr inbounds i1, i1* %[[load]], i64 0 ; CHECK: store i1 %[[phi]], i1* %[[gep0]], align 4 -; CHECK: %[[gep1:.*]] = getelementptr inbounds i1, i1* %[[load]], i64 0 -; CHECK: store i1 %[[phi]], i1* %[[gep1]], align 4 +; Check that store instructions are hoisted. +; CHECK-NOT: store
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