; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -passes='loop-mssa(simple-loop-unswitch<nontrivial>,licm)' -verify-memoryssa -S < %s | FileCheck %s

; Check that running LICM after SimpleLoopUnswitch does not result in a crash.

define i32 @foo(i1 %arg, ptr %arg1) {
; CHECK-LABEL: define i32 @foo(
; CHECK-SAME: i1 [[ARG:%.*]], ptr [[ARG1:%.*]]) {
; CHECK-NEXT:  [[START:.*:]]
; CHECK-NEXT:    [[ARG_FR:%.*]] = freeze i1 [[ARG]]
; CHECK-NEXT:    br i1 [[ARG_FR]], label %[[START_SPLIT_US:.*]], label %[[START_SPLIT:.*]]
; CHECK:       [[START_SPLIT_US]]:
; CHECK-NEXT:    br label %[[LOOP_US:.*]]
; CHECK:       [[LOOP_US]]:
; CHECK-NEXT:    br label %[[BB0:.*]]
; CHECK:       [[BB0]]:
; CHECK-NEXT:    br label %[[BB1:.*]]
; CHECK:       [[BB1]]:
; CHECK-NEXT:    [[UNSWITCHED_SELECT_US:%.*]] = phi ptr [ [[ARG1]], %[[BB0]] ]
; CHECK-NEXT:    [[I3_US:%.*]] = call i32 [[UNSWITCHED_SELECT_US]]()
; CHECK-NEXT:    br i1 true, label %[[LOOP_US]], label %[[RET_SPLIT_US:.*]]
; CHECK:       [[RET_SPLIT_US]]:
; CHECK-NEXT:    [[I3_LCSSA_US:%.*]] = phi i32 [ [[I3_US]], %[[BB1]] ]
; CHECK-NEXT:    br label %[[RET:.*]]
; CHECK:       [[START_SPLIT]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    br label %[[BB2:.*]]
; CHECK:       [[BB2]]:
; CHECK-NEXT:    br i1 false, label %[[LOOP]], label %[[RET_SPLIT:.*]]
; CHECK:       [[RET_SPLIT]]:
; CHECK-NEXT:    [[I3_LE:%.*]] = call i32 @bar()
; CHECK-NEXT:    br label %[[RET]]
; CHECK:       [[RET]]:
; CHECK-NEXT:    [[DOTUS_PHI:%.*]] = phi i32 [ [[I3_LE]], %[[RET_SPLIT]] ], [ [[I3_LCSSA_US]], %[[RET_SPLIT_US]] ]
; CHECK-NEXT:    ret i32 [[DOTUS_PHI]]
;
start:
  br label %loop

loop:                                              ; preds = %loop, %bb
  %i = select i1 %arg, ptr %arg1, ptr @bar
  %i3 = call i32 %i()
  br i1 %arg, label %loop, label %ret

ret:                                              ; preds = %loop
  ret i32 %i3
}

declare i32 @bar() nounwind willreturn memory(none)