| David Majnemer | 011980c | 2016-01-01 06:50:01 +0000 | [diff] [blame^] | 1 | ; RUN: llc < %s | FileCheck %s |
| 2 | target triple = "x86_64-pc-win32" |
| 3 | |
| 4 | declare i64 @llvm.x86.flags.read.u64() |
| 5 | declare void @llvm.x86.flags.write.u64(i64) |
| 6 | |
| 7 | define i64 @read_flags() { |
| 8 | entry: |
| 9 | %flags = call i64 @llvm.x86.flags.read.u64() |
| 10 | ret i64 %flags |
| 11 | } |
| 12 | |
| 13 | ; CHECK-LABEL: read_flags: |
| 14 | ; CHECK: pushq %rbp |
| 15 | ; CHECK: .seh_pushreg 5 |
| 16 | ; CHECK: movq %rsp, %rbp |
| 17 | ; CHECK: .seh_setframe 5, 0 |
| 18 | ; CHECK: .seh_endprologue |
| 19 | ; CHECK-NEXT: pushfq |
| 20 | ; CHECK-NEXT: popq %rax |
| 21 | ; CHECK-NEXT: popq %rbp |
| 22 | |
| 23 | define void @write_flags(i64 %arg) { |
| 24 | entry: |
| 25 | call void @llvm.x86.flags.write.u64(i64 %arg) |
| 26 | ret void |
| 27 | } |
| 28 | |
| 29 | ; CHECK-LABEL: write_flags: |
| 30 | ; CHECK: pushq %rbp |
| 31 | ; CHECK: .seh_pushreg 5 |
| 32 | ; CHECK: movq %rsp, %rbp |
| 33 | ; CHECK: .seh_setframe 5, 0 |
| 34 | ; CHECK: .seh_endprologue |
| 35 | ; CHECK-NEXT: pushq %rcx |
| 36 | ; CHECK-NEXT: popfq |
| 37 | ; CHECK-NEXT: popq %rbp |