xref: /aosp_15_r20/external/llvm/test/CodeGen/X86/x86-flags-intrinsics.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; RUN: llc -verify-machineinstrs < %s | FileCheck %s
2*9880d681SAndroid Build Coastguard Workertarget triple = "i686-pc-win32"
3*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Workerdeclare i32 @llvm.x86.flags.read.u32()
5*9880d681SAndroid Build Coastguard Workerdeclare void @llvm.x86.flags.write.u32(i32)
6*9880d681SAndroid Build Coastguard Worker
7*9880d681SAndroid Build Coastguard Workerdefine i32 @read_flags() {
8*9880d681SAndroid Build Coastguard Workerentry:
9*9880d681SAndroid Build Coastguard Worker  %flags = call i32 @llvm.x86.flags.read.u32()
10*9880d681SAndroid Build Coastguard Worker  ret i32 %flags
11*9880d681SAndroid Build Coastguard Worker}
12*9880d681SAndroid Build Coastguard Worker
13*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: _read_flags:
14*9880d681SAndroid Build Coastguard Worker; CHECK:      pushl   %ebp
15*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: movl    %esp, %ebp
16*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: pushfl
17*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: popl    %eax
18*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: popl    %ebp
19*9880d681SAndroid Build Coastguard Worker
20*9880d681SAndroid Build Coastguard Workerdefine x86_fastcallcc void @write_flags(i32 inreg %arg) {
21*9880d681SAndroid Build Coastguard Workerentry:
22*9880d681SAndroid Build Coastguard Worker  call void @llvm.x86.flags.write.u32(i32 %arg)
23*9880d681SAndroid Build Coastguard Worker  ret void
24*9880d681SAndroid Build Coastguard Worker}
25*9880d681SAndroid Build Coastguard Worker
26*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @write_flags@4:
27*9880d681SAndroid Build Coastguard Worker; CHECK:      pushl   %ebp
28*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: movl    %esp, %ebp
29*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: pushl   %ecx
30*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: popfl
31*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: popl    %ebp
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