| ; RUN: llc -verify-machineinstrs < %s | FileCheck %s |
| target triple = "x86_64-pc-win32" |
| |
| declare i64 @llvm.x86.flags.read.u64() |
| declare void @llvm.x86.flags.write.u64(i64) |
| |
| define i64 @read_flags() { |
| entry: |
| %flags = call i64 @llvm.x86.flags.read.u64() |
| ret i64 %flags |
| } |
| |
| ; CHECK-LABEL: read_flags: |
| ; CHECK: pushq %rbp |
| ; CHECK: .seh_pushreg 5 |
| ; CHECK: movq %rsp, %rbp |
| ; CHECK: .seh_setframe 5, 0 |
| ; CHECK: .seh_endprologue |
| ; CHECK-NEXT: pushfq |
| ; CHECK-NEXT: popq %rax |
| ; CHECK-NEXT: popq %rbp |
| |
| define void @write_flags(i64 %arg) { |
| entry: |
| call void @llvm.x86.flags.write.u64(i64 %arg) |
| ret void |
| } |
| |
| ; CHECK-LABEL: write_flags: |
| ; CHECK: pushq %rbp |
| ; CHECK: .seh_pushreg 5 |
| ; CHECK: movq %rsp, %rbp |
| ; CHECK: .seh_setframe 5, 0 |
| ; CHECK: .seh_endprologue |
| ; CHECK-NEXT: pushq %rcx |
| ; CHECK-NEXT: popfq |
| ; CHECK-NEXT: popq %rbp |