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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=licm < %s | FileCheck %s
; Make sure that a store of a pointer to itself is handled correctly.
define void @test(ptr %p1, ptr %p2, ptr noalias %p3) {
; CHECK-LABEL: @test(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[P:%.*]] = phi ptr [ [[P1:%.*]], [[ENTRY:%.*]] ], [ [[P2:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[V:%.*]] = load i64, ptr [[P]], align 4
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i64 [[V]], 0
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP]], label [[LOOP_EXIT:%.*]]
; CHECK: loop.exit:
; CHECK-NEXT: store ptr [[P3:%.*]], ptr [[P3]], align 8
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%p = phi ptr [ %p1, %entry ], [ %p2, %loop ]
%v = load i64, ptr %p
%cmp = icmp eq i64 %v, 0
store ptr %p3, ptr %p3
br i1 %cmp, label %loop, label %loop.exit
loop.exit:
ret void
}
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