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| author | Evan Cheng <evan.cheng@apple.com> | 2008-09-29 17:26:18 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-09-29 17:26:18 +0000 |
| commit | d47e0b664f9c4546e26cc527deca145fe37634fa (patch) | |
| tree | 9743f0f752c89b8e42f883545e4dbc363f620e64 /test/CodeGen | |
| parent | 6cccf03d02936e16319e7cebf7a158643a8b1040 (diff) | |
| download | external_llvm-d47e0b664f9c4546e26cc527deca145fe37634fa.zip external_llvm-d47e0b664f9c4546e26cc527deca145fe37634fa.tar.gz external_llvm-d47e0b664f9c4546e26cc527deca145fe37634fa.tar.bz2 | |
Fix PR2835. Do not change the width of a volatile load.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56792 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/X86/2008-09-29-VolatileBug.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2008-09-29-VolatileBug.ll b/test/CodeGen/X86/2008-09-29-VolatileBug.ll new file mode 100644 index 0000000..4f6eb59 --- /dev/null +++ b/test/CodeGen/X86/2008-09-29-VolatileBug.ll @@ -0,0 +1,15 @@ +; RUN: llvm-as < %s | llc -march=x86 | not grep movz +; PR2835 + +@g_407 = internal global i32 0 ; <i32*> [#uses=1] +@llvm.used = appending global [1 x i8*] [ i8* bitcast (i32 ()* @main to i8*) ], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0] + +define i32 @main() nounwind { +entry: + %0 = volatile load i32* @g_407, align 4 ; <i32> [#uses=1] + %1 = trunc i32 %0 to i8 ; <i8> [#uses=1] + %2 = tail call i32 @func_45(i8 zeroext %1) nounwind ; <i32> [#uses=0] + ret i32 0 +} + +declare i32 @func_45(i8 zeroext) nounwind |