File: pr42512.ll

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llvm-toolchain-17 1%3A17.0.6-22
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s

define i8 @test(i8 %x) {
; CHECK-LABEL: test:
; CHECK:       # %bb.0:
; CHECK-NEXT:    slgfi %r0, 1
; CHECK-NEXT:    ipm %r0
; CHECK-NEXT:    afi %r0, -536870912
; CHECK-NEXT:    srl %r0, 31
; CHECK-NEXT:    ar %r2, %r0
; CHECK-NEXT:    br %r14
  %usubo = tail call { i64, i1 } @llvm.usub.with.overflow.i64(i64 undef, i64 1)
  %ov = extractvalue { i64, i1 } %usubo, 1
  %ovext = zext i1 %ov to i8
  %ret = add i8 %x, %ovext
  ret i8 %ret
}

; Function Attrs: nounwind readnone speculatable
declare { i64, i1 } @llvm.usub.with.overflow.i64(i64, i64) #0

attributes #0 = { nounwind readnone speculatable }