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; 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)
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