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[LICM] Add test show missed promotion due to AAInfo merging (NFC)
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 | ||
; RUN: opt < %s -S -passes=licm | FileCheck %s | ||
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; See https://discourse.llvm.org/t/rfc-dont-merge-memory-locations-in-aliassettracker/73336 | ||
; pairwise TBAA indicates NoAlias of load/store ptr at %s with store i32 at %0 | ||
; yet LICM fails to promote load/store ptr %s out of the loop | ||
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define void @_Z4testP1S(ptr %s) { | ||
; CHECK-LABEL: define void @_Z4testP1S( | ||
; CHECK-SAME: ptr [[S:%.*]]) { | ||
; CHECK-NEXT: entry: | ||
; CHECK-NEXT: br label [[FOR_BODY:%.*]] | ||
; CHECK: for.cond.cleanup: | ||
; CHECK-NEXT: ret void | ||
; CHECK: for.body: | ||
; CHECK-NEXT: [[I_05:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY]] ] | ||
; CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[S]], align 4, !tbaa [[TBAA0:![0-9]+]] | ||
; CHECK-NEXT: store i32 [[I_05]], ptr [[TMP0]], align 4, !tbaa [[TBAA5:![0-9]+]] | ||
; CHECK-NEXT: [[ADD_PTR_I:%.*]] = getelementptr inbounds i32, ptr [[TMP0]], i32 1 | ||
; CHECK-NEXT: store ptr [[ADD_PTR_I]], ptr [[S]], align 4, !tbaa [[TBAA7:![0-9]+]] | ||
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_05]], 1 | ||
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], 100 | ||
; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY]] | ||
; | ||
entry: | ||
br label %for.body | ||
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for.cond.cleanup: ; preds = %for.body | ||
ret void | ||
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for.body: ; preds = %entry, %for.body | ||
%i.05 = phi i32 [ 0, %entry ], [ %inc, %for.body ] | ||
%0 = load ptr, ptr %s, align 4, !tbaa !0 | ||
store i32 %i.05, ptr %0, align 4, !tbaa !5 | ||
%add.ptr.i = getelementptr inbounds i32, ptr %0, i32 1 | ||
store ptr %add.ptr.i, ptr %s, align 4, !tbaa !7 | ||
%inc = add nuw nsw i32 %i.05, 1 | ||
%exitcond.not = icmp eq i32 %inc, 100 | ||
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body | ||
} | ||
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!0 = !{!1, !2, i64 0} | ||
!1 = !{!"_ZTS1S", !2, i64 0} | ||
!2 = !{!"any pointer", !3, i64 0} | ||
!3 = !{!"omnipotent char", !4, i64 0} | ||
!4 = !{!"Simple C++ TBAA"} | ||
!5 = !{!6, !6, i64 0} | ||
!6 = !{!"int", !3, i64 0} | ||
!7 = !{!2, !2, i64 0} | ||
;. | ||
; CHECK: [[TBAA0]] = !{[[META1:![0-9]+]], [[META2:![0-9]+]], i64 0} | ||
; CHECK: [[META1]] = !{!"_ZTS1S", [[META2]], i64 0} | ||
; CHECK: [[META2]] = !{!"any pointer", [[META3:![0-9]+]], i64 0} | ||
; CHECK: [[META3]] = !{!"omnipotent char", [[META4:![0-9]+]], i64 0} | ||
; CHECK: [[META4]] = !{!"Simple C++ TBAA"} | ||
; CHECK: [[TBAA5]] = !{[[META6:![0-9]+]], [[META6]], i64 0} | ||
; CHECK: [[META6]] = !{!"int", [[META3]], i64 0} | ||
; CHECK: [[TBAA7]] = !{[[META2]], [[META2]], i64 0} | ||
;. |