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