llvm-6502/test/CodeGen/X86/sret-implicit.ll

; RUN: llc -mtriple=x86_64-apple-darwin8 < %s | FileCheck %s
; RUN: llc -mtriple=x86_64-pc-linux < %s | FileCheck %s

; CHECK-LABEL: return32
; CHECK-DAG: movq	$0, (%rdi)
; CHECK-DAG: movq	%rdi, %rax
; CHECK: retq
define i256 @return32() {
  ret i256 0
}
X86 ABI fix for return values > 24 bytes. The return value's address must be returned in %rax. i.e. the callee needs to copy the sret argument (%rdi) into the return value (%rax). This probably won't manifest as a bug when the caller is LLVM-compiled code. But it is an ABI guarantee and tools expect it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228321 91177308-0d34-0410-b5e6-96231b3b80d8 2015-02-05 18:09:05 +00:00			`; RUN: llc -mtriple=x86_64-apple-darwin8 < %s \| FileCheck %s`
			`; RUN: llc -mtriple=x86_64-pc-linux < %s \| FileCheck %s`

			`; CHECK-LABEL: return32`
			`; CHECK-DAG: movq $0, (%rdi)`
			`; CHECK-DAG: movq %rdi, %rax`
			`; CHECK: retq`
			`define i256 @return32() {`
			`ret i256 0`
			`}`