File: knownbits-shift.ll

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llvm-toolchain-19 1%3A19.1.4-1~deb12u1
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=instcombine -S < %s | FileCheck %s

define i8 @simplify_lshr_with_exact(i8 %x) {
; CHECK-LABEL: @simplify_lshr_with_exact(
; CHECK-NEXT:    ret i8 2
;
  %shr = lshr exact i8 6, %x
  %r = and i8 %shr, 2
  ret i8 %r
}

define i8 @simplify_ashr_with_exact(i8 %x) {
; CHECK-LABEL: @simplify_ashr_with_exact(
; CHECK-NEXT:    ret i8 2
;
  %shr = ashr exact i8 -122, %x
  %r = and i8 %shr, 2
  ret i8 %r
}