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| author | Shih-wei Liao <sliao@google.com> | 2010-02-10 11:10:31 -0800 |
|---|---|---|
| committer | Shih-wei Liao <sliao@google.com> | 2010-02-10 11:10:31 -0800 |
| commit | e264f62ca09a8f65c87a46d562a4d0f9ec5d457e (patch) | |
| tree | 59e3d57ef656cef79afa708ae0a3daf25cd91fcf /test/CodeGen/X86/subreg-to-reg-0.ll | |
| download | external_llvm-e264f62ca09a8f65c87a46d562a4d0f9ec5d457e.zip external_llvm-e264f62ca09a8f65c87a46d562a4d0f9ec5d457e.tar.gz external_llvm-e264f62ca09a8f65c87a46d562a4d0f9ec5d457e.tar.bz2 | |
Check in LLVM r95781.
Diffstat (limited to 'test/CodeGen/X86/subreg-to-reg-0.ll')
| -rw-r--r-- | test/CodeGen/X86/subreg-to-reg-0.ll | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/test/CodeGen/X86/subreg-to-reg-0.ll b/test/CodeGen/X86/subreg-to-reg-0.ll new file mode 100644 index 0000000..d718c85 --- /dev/null +++ b/test/CodeGen/X86/subreg-to-reg-0.ll @@ -0,0 +1,11 @@ +; RUN: llc < %s -march=x86-64 | grep mov | count 1 + +; Do eliminate the zero-extension instruction and rely on +; x86-64's implicit zero-extension! + +define i64 @foo(i32* %p) nounwind { + %t = load i32* %p + %n = add i32 %t, 1 + %z = zext i32 %n to i64 + ret i64 %z +} |