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| author | Evan Cheng <evan.cheng@apple.com> | 2010-05-10 19:03:57 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-05-10 19:03:57 +0000 |
| commit | aad753bbbd98c952f7e65246af2faf5c7d5a850b (patch) | |
| tree | 56b8ac3cef2c55af0b8ac483936ac15afd534b3a /test/CodeGen/X86/2010-05-10-DAGCombinerBug.ll | |
| parent | 1deea21e3512e8c41b5145711019048d39d1cb0b (diff) | |
| download | llvm-aad753bbbd98c952f7e65246af2faf5c7d5a850b.tar.gz llvm-aad753bbbd98c952f7e65246af2faf5c7d5a850b.tar.bz2 llvm-aad753bbbd98c952f7e65246af2faf5c7d5a850b.tar.xz | |
Be careful with operand promotion. For a binary operation, the source operands may be the same. PR7018. rdar://7939869.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103419 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/2010-05-10-DAGCombinerBug.ll')
| -rw-r--r-- | test/CodeGen/X86/2010-05-10-DAGCombinerBug.ll | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2010-05-10-DAGCombinerBug.ll b/test/CodeGen/X86/2010-05-10-DAGCombinerBug.ll new file mode 100644 index 0000000000..e719da304c --- /dev/null +++ b/test/CodeGen/X86/2010-05-10-DAGCombinerBug.ll @@ -0,0 +1,11 @@ +; RUN: llc < %s -mtriple=i386-apple-darwin10 +; PR7018 +; rdar://7939869 + +define i32 @CXB30130(i32 %num1, i16* nocapture %num2, float* nocapture %num3, double* nocapture %num4) nounwind ssp { +entry: + %0 = load i16* %num2, align 2 ; <i16> [#uses=2] + %1 = mul nsw i16 %0, %0 ; <i16> [#uses=1] + store i16 %1, i16* %num2, align 2 + ret i32 undef +} |