; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; NOTE: This test ensures InstCombine preserves dominance even when it
; reorders shifts through SimplifyDemandedBits/log2 folding.
;
; RUN: opt -passes=instcombine -S < %s | FileCheck %s

define i64 @f(i64 %arg0, i64 %arg1) {
; CHECK-LABEL: define i64 @f(
; CHECK-SAME: i64 [[ARG0:%.*]], i64 [[ARG1:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    [[I:%.*]] = add i64 [[ARG1]], -1
; CHECK-NEXT:    [[I1:%.*]] = shl nuw i64 1, [[I]]
; CHECK-NEXT:    [[SHL2:%.*]] = shl nuw i64 [[I1]], [[ARG1]]
; CHECK-NEXT:    [[SREM:%.*]] = srem i64 [[ARG0]], [[SHL2]]
; CHECK-NEXT:    ret i64 [[SREM]]
;
entry:
  %shl = shl nuw i64 1, %arg1
  %lshr = lshr exact i64 %shl, 1
  %shl2 = shl nuw i64 %lshr, %arg1
  %srem = srem i64 %arg0, %shl2
  ret i64 %srem
}