1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -S -passes=licm < %s | FileCheck %s 3 4; Make sure that a store of a pointer to itself is handled correctly. 5 6define void @test(ptr %p1, ptr %p2, ptr noalias %p3) { 7; CHECK-LABEL: @test( 8; CHECK-NEXT: entry: 9; CHECK-NEXT: br label [[LOOP:%.*]] 10; CHECK: loop: 11; CHECK-NEXT: [[P:%.*]] = phi ptr [ [[P1:%.*]], [[ENTRY:%.*]] ], [ [[P2:%.*]], [[LOOP]] ] 12; CHECK-NEXT: [[V:%.*]] = load i64, ptr [[P]], align 4 13; CHECK-NEXT: [[CMP:%.*]] = icmp eq i64 [[V]], 0 14; CHECK-NEXT: br i1 [[CMP]], label [[LOOP]], label [[LOOP_EXIT:%.*]] 15; CHECK: loop.exit: 16; CHECK-NEXT: store ptr [[P3:%.*]], ptr [[P3]], align 8 17; CHECK-NEXT: ret void 18; 19entry: 20 br label %loop 21 22loop: 23 %p = phi ptr [ %p1, %entry ], [ %p2, %loop ] 24 %v = load i64, ptr %p 25 %cmp = icmp eq i64 %v, 0 26 store ptr %p3, ptr %p3 27 br i1 %cmp, label %loop, label %loop.exit 28 29loop.exit: 30 ret void 31} 32