From d77a44363141923a5b5f01feff3d42aaf42ec2dc Mon Sep 17 00:00:00 2001 From: Anton Korobeynikov Date: Sun, 3 Oct 2010 22:52:07 +0000 Subject: va_args support for Win64. Patch by Cameron! llvm-svn: 115480 --- llvm/test/CodeGen/X86/win64_vararg.ll | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 llvm/test/CodeGen/X86/win64_vararg.ll (limited to 'llvm/test/CodeGen') diff --git a/llvm/test/CodeGen/X86/win64_vararg.ll b/llvm/test/CodeGen/X86/win64_vararg.ll new file mode 100644 index 00000000000..072f36afb7b --- /dev/null +++ b/llvm/test/CodeGen/X86/win64_vararg.ll @@ -0,0 +1,20 @@ +; RUN: llc < %s -mtriple=x86_64-pc-win32 | FileCheck %s + +; Verify that the var arg parameters which are passed in registers are stored +; in home stack slots allocated by the caller and that AP is correctly +; calculated. +define void @average_va(i32 %count, ...) nounwind { +entry: +; CHECK: subq $40, %rsp +; CHECK: movq %r9, 72(%rsp) +; CHECK: movq %r8, 64(%rsp) +; CHECK: movq %rdx, 56(%rsp) +; CHECK: leaq 56(%rsp), %rax + + %ap = alloca i8*, align 8 ; [#uses=1] + %ap1 = bitcast i8** %ap to i8* ; [#uses=1] + call void @llvm.va_start(i8* %ap1) + ret void +} + +declare void @llvm.va_start(i8*) nounwind -- cgit v1.2.3