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| author | Arnold Schwaighofer <arnold.schwaighofer@gmail.com> | 2007-10-11 19:40:01 +0000 |
|---|---|---|
| committer | Arnold Schwaighofer <arnold.schwaighofer@gmail.com> | 2007-10-11 19:40:01 +0000 |
| commit | c85e1716f0e45e4c18a9ef2fbe431a51ac3a4252 (patch) | |
| tree | e6e745a81699085d757db166e645f8a6639cde7a /test/CodeGen/X86/tailcallpic1.ll | |
| parent | 68c8411ef591818d89c6a81098a328fcd75be72a (diff) | |
| download | llvm-c85e1716f0e45e4c18a9ef2fbe431a51ac3a4252.tar.gz llvm-c85e1716f0e45e4c18a9ef2fbe431a51ac3a4252.tar.bz2 llvm-c85e1716f0e45e4c18a9ef2fbe431a51ac3a4252.tar.xz | |
Added tail call optimization to the x86 back end. It can be
enabled by passing -tailcallopt to llc. The optimization is
performed if the following conditions are satisfied:
* caller/callee are fastcc
* elf/pic is disabled OR
elf/pic enabled + callee is in module + callee has
visibility protected or hidden
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42870 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/tailcallpic1.ll')
| -rw-r--r-- | test/CodeGen/X86/tailcallpic1.ll | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/test/CodeGen/X86/tailcallpic1.ll b/test/CodeGen/X86/tailcallpic1.ll new file mode 100644 index 0000000000..54074eb0ba --- /dev/null +++ b/test/CodeGen/X86/tailcallpic1.ll @@ -0,0 +1,12 @@ +; RUN: llvm-as < %s | llc -tailcallopt -mtriple=i686-pc-linux-gnu -relocation-model=pic | grep TAILCALL + +define protected fastcc i32 @tailcallee(i32 %a1, i32 %a2, i32 %a3, i32 %a4) { +entry: + ret i32 %a3 +} + +define fastcc i32 @tailcaller(i32 %in1, i32 %in2) { +entry: + %tmp11 = tail call fastcc i32 @tailcallee( i32 %in1, i32 %in2, i32 %in1, i32 %in2 ) ; <i32> [#uses=1] + ret i32 %tmp11 +} |