From aad753bbbd98c952f7e65246af2faf5c7d5a850b Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Mon, 10 May 2010 19:03:57 +0000 Subject: 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 --- test/CodeGen/X86/2010-05-10-DAGCombinerBug.ll | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 test/CodeGen/X86/2010-05-10-DAGCombinerBug.ll (limited to 'test/CodeGen/X86/2010-05-10-DAGCombinerBug.ll') 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 ; [#uses=2] + %1 = mul nsw i16 %0, %0 ; [#uses=1] + store i16 %1, i16* %num2, align 2 + ret i32 undef +} -- cgit v1.2.3