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| author | Dan Gohman <gohman@apple.com> | 2009-11-13 18:49:38 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-11-13 18:49:38 +0000 |
| commit | 01205a80f5c789234029813f8c09488891c0b23e (patch) | |
| tree | ede7e5766fcd020c24a0bda846877edc8108eb1d /test | |
| parent | 0d1680a7d886e2148f3d54c0095bf946544a741f (diff) | |
| download | external_llvm-01205a80f5c789234029813f8c09488891c0b23e.zip external_llvm-01205a80f5c789234029813f8c09488891c0b23e.tar.gz external_llvm-01205a80f5c789234029813f8c09488891c0b23e.tar.bz2 | |
Don't let a noalias difference disrupt the tailcall optimization.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88672 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/tailcall1.ll | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/test/CodeGen/X86/tailcall1.ll b/test/CodeGen/X86/tailcall1.ll index a4f87c0..215d009 100644 --- a/test/CodeGen/X86/tailcall1.ll +++ b/test/CodeGen/X86/tailcall1.ll @@ -1,4 +1,4 @@ -; RUN: llc < %s -march=x86 -tailcallopt | grep TAILCALL +; RUN: llc < %s -march=x86 -tailcallopt | grep TAILCALL | count 3 define fastcc i32 @tailcallee(i32 %a1, i32 %a2, i32 %a3, i32 %a4) { entry: ret i32 %a3 @@ -9,3 +9,17 @@ entry: %tmp11 = tail call fastcc i32 @tailcallee( i32 %in1, i32 %in2, i32 %in1, i32 %in2 ) ; <i32> [#uses=1] ret i32 %tmp11 } + +declare fastcc i8* @alias_callee() + +define fastcc noalias i8* @noalias_caller() nounwind { + %p = tail call fastcc i8* @alias_callee() + ret i8* %p +} + +declare fastcc noalias i8* @noalias_callee() + +define fastcc i8* @alias_caller() nounwind { + %p = tail call fastcc noalias i8* @noalias_callee() + ret i8* %p +} |