21 lines
611 B
LLVM
21 lines
611 B
LLVM
; RUN: llc < %s -march=x86 | grep mul | count 1
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; RUN: llc < %s -march=x86 | grep add | count 3
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define i32 @t1(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.smul.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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}
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define i32 @t2(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.smul.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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}
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declare { i32, i1 } @llvm.smul.with.overflow.i32(i32, i32) nounwind
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