forked from OSchip/llvm-project
32 lines
705 B
LLVM
32 lines
705 B
LLVM
; RUN: llc < %s | FileCheck %s
|
|
target triple = "i686-pc-win32"
|
|
|
|
declare i32 @llvm.x86.flags.read.u32()
|
|
declare void @llvm.x86.flags.write.u32(i32)
|
|
|
|
define i32 @read_flags() {
|
|
entry:
|
|
%flags = call i32 @llvm.x86.flags.read.u32()
|
|
ret i32 %flags
|
|
}
|
|
|
|
; CHECK-LABEL: _read_flags:
|
|
; CHECK: pushl %ebp
|
|
; CHECK-NEXT: movl %esp, %ebp
|
|
; CHECK-NEXT: pushfl
|
|
; CHECK-NEXT: popl %eax
|
|
; CHECK-NEXT: popl %ebp
|
|
|
|
define x86_fastcallcc void @write_flags(i32 inreg %arg) {
|
|
entry:
|
|
call void @llvm.x86.flags.write.u32(i32 %arg)
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: @write_flags@4:
|
|
; CHECK: pushl %ebp
|
|
; CHECK-NEXT: movl %esp, %ebp
|
|
; CHECK-NEXT: pushl %ecx
|
|
; CHECK-NEXT: popfl
|
|
; CHECK-NEXT: popl %ebp
|