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| author | Eli Friedman <eli.friedman@gmail.com> | 2010-07-30 06:44:31 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2010-07-30 06:44:31 +0000 |
| commit | fe1b227c1a71616281beb6dc6981caeafefe13b9 (patch) | |
| tree | b866b05db2593ef00bbfbcbea9a2bafdee9979ce /test | |
| parent | 5c49ddb5a2323f480c1ea3603b42637f30263cc9 (diff) | |
| download | external_llvm-fe1b227c1a71616281beb6dc6981caeafefe13b9.zip external_llvm-fe1b227c1a71616281beb6dc6981caeafefe13b9.tar.gz external_llvm-fe1b227c1a71616281beb6dc6981caeafefe13b9.tar.bz2 | |
Fix for bug reported by Evzen Muller on llvm-commits: make sure to correctly
check the range of the constant when optimizing a comparison between a
constant and a sign_extend_inreg node.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109854 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/2010-07-29-SetccSimplify.ll | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2010-07-29-SetccSimplify.ll b/test/CodeGen/X86/2010-07-29-SetccSimplify.ll new file mode 100644 index 0000000..96016cf --- /dev/null +++ b/test/CodeGen/X86/2010-07-29-SetccSimplify.ll @@ -0,0 +1,14 @@ +; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s + +define i32 @extend2bit_v2(i32 %val) { +entry: + %0 = trunc i32 %val to i2 ; <i2> [#uses=1] + %1 = sext i2 %0 to i32 ; <i32> [#uses=1] + %2 = icmp eq i32 %1, 3 ; <i1> [#uses=1] + %3 = zext i1 %2 to i32 ; <i32> [#uses=1] + ret i32 %3 +} + +; CHECK: extend2bit_v2: +; CHECK: xorl %eax, %eax +; CHECK-NEXT: ret |