39 lines
944 B
LLVM
39 lines
944 B
LLVM
; RUN: llc < %s -march=x86 | FileCheck %s
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declare {i32, i1} @llvm.umul.with.overflow.i32(i32 %a, i32 %b)
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define zeroext i1 @a(i32 %x) nounwind {
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%res = call {i32, i1} @llvm.umul.with.overflow.i32(i32 %x, i32 3)
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%obil = extractvalue {i32, i1} %res, 1
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ret i1 %obil
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; CHECK-LABEL: a:
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; CHECK: mull
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; CHECK: seto %al
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; CHECK: movzbl %al, %eax
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; CHECK: ret
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}
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define i32 @test2(i32 %a, i32 %b) nounwind readnone {
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entry:
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%tmp0 = add i32 %b, %a
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%tmp1 = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %tmp0, i32 2)
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%tmp2 = extractvalue { i32, i1 } %tmp1, 0
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ret i32 %tmp2
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; CHECK-LABEL: test2:
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; CHECK: addl
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; CHECK-NEXT: addl
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; CHECK-NEXT: ret
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}
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define i32 @test3(i32 %a, i32 %b) nounwind readnone {
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entry:
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%tmp0 = add i32 %b, %a
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%tmp1 = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %tmp0, i32 4)
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%tmp2 = extractvalue { i32, i1 } %tmp1, 0
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ret i32 %tmp2
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; CHECK-LABEL: test3:
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; CHECK: addl
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; CHECK: mull
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; CHECK-NEXT: ret
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}
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