1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 2; RUN: opt < %s -S -passes=licm | FileCheck %s 3 4; See https://discourse.llvm.org/t/rfc-dont-merge-memory-locations-in-aliassettracker/73336 5; pairwise TBAA indicates NoAlias of load/store ptr at %s with store i32 at %0 6; yet LICM fails to promote load/store ptr %s out of the loop 7 8define void @_Z4testP1S(ptr %s) { 9; CHECK-LABEL: define void @_Z4testP1S( 10; CHECK-SAME: ptr [[S:%.*]]) { 11; CHECK-NEXT: entry: 12; CHECK-NEXT: [[S_PROMOTED:%.*]] = load ptr, ptr [[S]], align 4, !tbaa [[TBAA0:![0-9]+]] 13; CHECK-NEXT: br label [[FOR_BODY:%.*]] 14; CHECK: for.cond.cleanup: 15; CHECK-NEXT: [[ADD_PTR_I_LCSSA:%.*]] = phi ptr [ [[ADD_PTR_I:%.*]], [[FOR_BODY]] ] 16; CHECK-NEXT: store ptr [[ADD_PTR_I_LCSSA]], ptr [[S]], align 4, !tbaa [[TBAA0]] 17; CHECK-NEXT: ret void 18; CHECK: for.body: 19; CHECK-NEXT: [[ADD_PTR_I1:%.*]] = phi ptr [ [[S_PROMOTED]], [[ENTRY:%.*]] ], [ [[ADD_PTR_I]], [[FOR_BODY]] ] 20; CHECK-NEXT: [[I_05:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[INC:%.*]], [[FOR_BODY]] ] 21; CHECK-NEXT: store i32 [[I_05]], ptr [[ADD_PTR_I1]], align 4, !tbaa [[TBAA4:![0-9]+]] 22; CHECK-NEXT: [[ADD_PTR_I]] = getelementptr inbounds i32, ptr [[ADD_PTR_I1]], i32 1 23; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_05]], 1 24; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], 100 25; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY]] 26; 27entry: 28 br label %for.body 29 30for.cond.cleanup: ; preds = %for.body 31 ret void 32 33for.body: ; preds = %entry, %for.body 34 %i.05 = phi i32 [ 0, %entry ], [ %inc, %for.body ] 35 %0 = load ptr, ptr %s, align 4, !tbaa !0 36 store i32 %i.05, ptr %0, align 4, !tbaa !5 37 %add.ptr.i = getelementptr inbounds i32, ptr %0, i32 1 38 store ptr %add.ptr.i, ptr %s, align 4, !tbaa !7 39 %inc = add nuw nsw i32 %i.05, 1 40 %exitcond.not = icmp eq i32 %inc, 100 41 br i1 %exitcond.not, label %for.cond.cleanup, label %for.body 42} 43 44!0 = !{!1, !2, i64 0} 45!1 = !{!"_ZTS1S", !2, i64 0} 46!2 = !{!"any pointer", !3, i64 0} 47!3 = !{!"omnipotent char", !4, i64 0} 48!4 = !{!"Simple C++ TBAA"} 49!5 = !{!6, !6, i64 0} 50!6 = !{!"int", !3, i64 0} 51!7 = !{!2, !2, i64 0} 52;. 53; CHECK: [[TBAA0]] = !{[[META1:![0-9]+]], [[META1]], i64 0} 54; CHECK: [[META1]] = !{!"any pointer", [[META2:![0-9]+]], i64 0} 55; CHECK: [[META2]] = !{!"omnipotent char", [[META3:![0-9]+]], i64 0} 56; CHECK: [[META3]] = !{!"Simple C++ TBAA"} 57; CHECK: [[TBAA4]] = !{[[META5:![0-9]+]], [[META5]], i64 0} 58; CHECK: [[META5]] = !{!"int", [[META2]], i64 0} 59;. 60