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| author | Nick Lewycky <nicholas@mxc.ca> | 2012-01-19 00:34:10 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2012-01-19 00:34:10 +0000 |
| commit | 22de16dc7582dac43429ce0dcb374604020c01f5 (patch) | |
| tree | cdf90f822164c39bf7a6c99518381a49b0cbf7b7 /test | |
| parent | 9b159710ebe8a37cba38ca0c5b465e362bd68af7 (diff) | |
| download | llvm-22de16dc7582dac43429ce0dcb374604020c01f5.tar.gz llvm-22de16dc7582dac43429ce0dcb374604020c01f5.tar.bz2 llvm-22de16dc7582dac43429ce0dcb374604020c01f5.tar.xz | |
Add a TargetOption for disabling tail calls.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148442 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/tailcall-disable.ll | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/test/CodeGen/X86/tailcall-disable.ll b/test/CodeGen/X86/tailcall-disable.ll new file mode 100644 index 0000000000..a561b74609 --- /dev/null +++ b/test/CodeGen/X86/tailcall-disable.ll @@ -0,0 +1,40 @@ +; RUN: llc -disable-tail-calls < %s | FileCheck --check-prefix=CALL %s +; RUN: llc < %s | FileCheck --check-prefix=JMP %s + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +define i32 @helper() nounwind { +entry: + ret i32 7 +} + +define i32 @test1() nounwind { +entry: + %call = tail call i32 @helper() + ret i32 %call +} + +;CALL: test1: +;CALL-NOT: ret +;CALL: callq helper +;CALL: ret + +;JMP: test1: +;JMP-NOT: ret +;JMP: jmp helper # TAILCALL + +define i32 @test2() nounwind { +entry: + %call = tail call i32 @test2() + ret i32 %call +} + +;CALL: test2: +;CALL-NOT: ret +;CALL: callq test2 +;CALL: ret + +;JMP: test2: +;JMP-NOT: ret +;JMP: jmp test2 # TAILCALL |