24 lines
752 B
LLVM
24 lines
752 B
LLVM
; RUN: llc < %s -mtriple=s390x-linux-gnu -start-after=codegenprepare | FileCheck %s
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;
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; Test that compilation succeeds with multiple users of the carry resulting
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; in a truncation of the SELECT_CCMASK used by GET_CCMASK.
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define void @fun() {
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; CHECK-LABEL: fun:
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bb:
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%0 = call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 poison, i64 poison)
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%ov = extractvalue { i64, i1 } %0, 1
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%i2 = sext i1 %ov to i64
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%i3 = select i1 %ov, i64 9223372036854775807, i64 -1
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%i4 = sub nsw i64 %i3, %i2
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%i5 = and i64 %i4, %i2
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%i6 = icmp slt i64 %i5, 0
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%i7 = xor i1 %ov, true
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%i8 = select i1 %i6, i1 %i7, i1 false
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%i9 = sext i1 %i8 to i16
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store i16 %i9, ptr poison, align 2
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unreachable
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}
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declare { i64, i1 } @llvm.uadd.with.overflow.i64(i64, i64)
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