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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -verify-machineinstrs -mtriple x86_64-linux < %s | FileCheck %s
; RUN: llc -verify-machineinstrs -mtriple x86_64-windows < %s | FileCheck %s --check-prefix=WIN64
declare i64 @llvm.x86.flags.read.u64()
declare void @llvm.x86.flags.write.u64(i64)
define i64 @read_flags() {
; CHECK-LABEL: read_flags:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: pushfq
; CHECK-NEXT: popq %rax
; CHECK-NEXT: retq
;
; WIN64-LABEL: read_flags:
; WIN64: # %bb.0: # %entry
; WIN64-NEXT: pushq %rbp
; WIN64-NEXT: .seh_pushreg %rbp
; WIN64-NEXT: movq %rsp, %rbp
; WIN64-NEXT: .seh_setframe %rbp, 0
; WIN64-NEXT: .seh_endprologue
; WIN64-NEXT: pushfq
; WIN64-NEXT: popq %rax
; WIN64-NEXT: popq %rbp
; WIN64-NEXT: retq
; WIN64-NEXT: .seh_endproc
entry:
%flags = call i64 @llvm.x86.flags.read.u64()
ret i64 %flags
}
define void @write_flags(i64 %arg) {
; CHECK-LABEL: write_flags:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: pushq %rdi
; CHECK-NEXT: popfq
; CHECK-NEXT: retq
;
; WIN64-LABEL: write_flags:
; WIN64: # %bb.0: # %entry
; WIN64-NEXT: pushq %rbp
; WIN64-NEXT: .seh_pushreg %rbp
; WIN64-NEXT: movq %rsp, %rbp
; WIN64-NEXT: .seh_setframe %rbp, 0
; WIN64-NEXT: .seh_endprologue
; WIN64-NEXT: pushq %rcx
; WIN64-NEXT: popfq
; WIN64-NEXT: popq %rbp
; WIN64-NEXT: retq
; WIN64-NEXT: .seh_endproc
entry:
call void @llvm.x86.flags.write.u64(i64 %arg)
ret void
}
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