From dd45bc25acd6dbe4e1067dc8e0ace81995f10f91 Mon Sep 17 00:00:00 2001 From: Arnold Schwaighofer Date: Thu, 11 Sep 2008 20:28:43 +0000 Subject: When tailcallopt is enabled all fastcc calls must have an aligned argument stack size. Add a test case. llvm-svn: 56119 --- llvm/test/CodeGen/X86/tailcall-stackalign.ll | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 llvm/test/CodeGen/X86/tailcall-stackalign.ll (limited to 'llvm/test/CodeGen/X86/tailcall-stackalign.ll') diff --git a/llvm/test/CodeGen/X86/tailcall-stackalign.ll b/llvm/test/CodeGen/X86/tailcall-stackalign.ll new file mode 100644 index 00000000000..80111925eec --- /dev/null +++ b/llvm/test/CodeGen/X86/tailcall-stackalign.ll @@ -0,0 +1,24 @@ +; RUN: llvm-as < %s | llc -mtriple=i686-unknown-linux -tailcallopt | grep -A 1 call | grep -A 1 tailcaller | grep subl | grep 20 +; Linux has 8 byte alignment so the params cause stack size 20 when tailcallopt +; is enabled, ensure that a normal fastcc call has matching stack size + + +define fastcc i32 @tailcallee(i32 %a1, i32 %a2, i32 %a3, i32 %a4) { + ret i32 %a3 +} + +define fastcc i32 @tailcaller(i32 %in1, i32 %in2, i32 %in3, i32 %in4) { + %tmp11 = tail call fastcc i32 @tailcallee(i32 %in1, i32 %in2, + i32 %in1, i32 %in2) + ret i32 %tmp11 +} + +define i32 @main(i32 %argc, i8** %argv) { + %tmp1 = call fastcc i32 @tailcaller( i32 1, i32 2, i32 3, i32 4 ) + ; expect match subl [stacksize] here + ret i32 0 +} + + + + -- cgit v1.2.3