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| author | Torok Edwin <edwintorok@gmail.com> | 2009-09-24 09:47:18 +0000 |
|---|---|---|
| committer | Torok Edwin <edwintorok@gmail.com> | 2009-09-24 09:47:18 +0000 |
| commit | 30a94e3b4203cee64db0edd997780bbe4ad0acdc (patch) | |
| tree | 933afcf9967cb4b73c1c5fb731b12a6dfe16c0fd /test/Transforms/IPConstantProp | |
| parent | 48f7ce88a6040c12d4c7d0a5bd208cf1e0bda9d1 (diff) | |
| download | llvm-30a94e3b4203cee64db0edd997780bbe4ad0acdc.tar.gz llvm-30a94e3b4203cee64db0edd997780bbe4ad0acdc.tar.bz2 llvm-30a94e3b4203cee64db0edd997780bbe4ad0acdc.tar.xz | |
Don't constant propagate byval pointers, since they are not really pointers, but
rather structs passed by value.
This fixes PR5038.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82689 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/IPConstantProp')
| -rw-r--r-- | test/Transforms/IPConstantProp/2009-09-24-byval-ptr.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/Transforms/IPConstantProp/2009-09-24-byval-ptr.ll b/test/Transforms/IPConstantProp/2009-09-24-byval-ptr.ll new file mode 100644 index 0000000000..75055d41a6 --- /dev/null +++ b/test/Transforms/IPConstantProp/2009-09-24-byval-ptr.ll @@ -0,0 +1,24 @@ +; RUN: llvm-as <%s | opt -ipsccp | llvm-dis | FileCheck %s +; Don't constant-propagate byval pointers, since they are not pointers! +; PR5038 +%struct.MYstr = type { i8, i32 } +@mystr = internal global %struct.MYstr zeroinitializer ; <%struct.MYstr*> [#uses=3] +define internal void @vfu1(%struct.MYstr* byval align 4 %u) nounwind { +entry: + %0 = getelementptr %struct.MYstr* %u, i32 0, i32 1 ; <i32*> [#uses=1] + store i32 99, i32* %0, align 4 +; CHECK: %struct.MYstr* %u + %1 = getelementptr %struct.MYstr* %u, i32 0, i32 0 ; <i8*> [#uses=1] + store i8 97, i8* %1, align 4 +; CHECK: %struct.MYstr* %u + br label %return + +return: ; preds = %entry + ret void +} +define void @unions() nounwind { +entry: + call void @vfu1(%struct.MYstr* byval align 4 @mystr) nounwind + ret void +} + |