diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2010-01-11 17:03:47 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-01-11 17:03:47 +0000 |
| commit | 4b0345be3071a5612023588eef689b93f3e94fa4 (patch) | |
| tree | 8b00fa6a2e6aacbf0e0ea788a5fb786a45930045 /test/CodeGen/X86/3addr-or.ll | |
| parent | 95eb2eeea65fbae223ffd517f3984f14b034fcb8 (diff) | |
| download | external_llvm-4b0345be3071a5612023588eef689b93f3e94fa4.zip external_llvm-4b0345be3071a5612023588eef689b93f3e94fa4.tar.gz external_llvm-4b0345be3071a5612023588eef689b93f3e94fa4.tar.bz2 | |
Select an OR with immediate as an ADD if the input bits are known zero. This allow the instruction to be 3address-fied if needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93152 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/3addr-or.ll')
| -rw-r--r-- | test/CodeGen/X86/3addr-or.ll | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/test/CodeGen/X86/3addr-or.ll b/test/CodeGen/X86/3addr-or.ll new file mode 100644 index 0000000..395ba46 --- /dev/null +++ b/test/CodeGen/X86/3addr-or.ll @@ -0,0 +1,11 @@ +; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s +; rdar://7527734 + +define i32 @test(i32 %x) nounwind readnone ssp { +entry: +; CHECK: test: +; CHECK: leal 3(%rdi), %eax + %0 = shl i32 %x, 5 ; <i32> [#uses=1] + %1 = or i32 %0, 3 ; <i32> [#uses=1] + ret i32 %1 +} |