derek.holloway
7502bf64a4
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43 lines
1.2 KiB
LLVM
43 lines
1.2 KiB
LLVM
; RUN: llc < %s
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@ok = internal constant [4 x i8] c"%d\0A\00"
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@no = internal constant [4 x i8] c"no\0A\00"
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define i1 @func1(i24 signext %v1, i24 signext %v2) nounwind {
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entry:
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%t = call {i24, i1} @llvm.sadd.with.overflow.i24(i24 %v1, i24 %v2)
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%sum = extractvalue {i24, i1} %t, 0
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%sum32 = sext i24 %sum to i32
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%obit = extractvalue {i24, i1} %t, 1
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br i1 %obit, label %overflow, label %normal
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normal:
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%t1 = tail call i32 (ptr, ...) @printf( ptr @ok, i32 %sum32 ) nounwind
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ret i1 true
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overflow:
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%t2 = tail call i32 (ptr, ...) @printf( ptr @no ) nounwind
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ret i1 false
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}
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define i1 @func2(i24 zeroext %v1, i24 zeroext %v2) nounwind {
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entry:
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%t = call {i24, i1} @llvm.uadd.with.overflow.i24(i24 %v1, i24 %v2)
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%sum = extractvalue {i24, i1} %t, 0
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%sum32 = zext i24 %sum to i32
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%obit = extractvalue {i24, i1} %t, 1
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br i1 %obit, label %carry, label %normal
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normal:
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%t1 = tail call i32 (ptr, ...) @printf( ptr @ok, i32 %sum32 ) nounwind
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ret i1 true
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carry:
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%t2 = tail call i32 (ptr, ...) @printf( ptr @no ) nounwind
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ret i1 false
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}
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declare i32 @printf(ptr, ...) nounwind
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declare {i24, i1} @llvm.sadd.with.overflow.i24(i24, i24)
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declare {i24, i1} @llvm.uadd.with.overflow.i24(i24, i24)
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