91073380ac
If a result is potentially based on a not yet proven assumption, BasicAA will remember it inside AssumptionBasedResults and remove the cache entry if an assumption higher up is later disproved. However, we currently miss the case where another cache entry ends up depending on such an AssumptionBased result. Fix this by introducing an additional AssumptionBased state for cache entries. If such a result is used, we'll still increment AAQI.NumAssumptionUses, which means that the using entry will also become AssumptionBased and be cleared if the assumption is disproved. At the end of the root query, convert remaining AssumptionBased results into definitive results. Fixes https://github.com/llvm/llvm-project/issues/98978.
107 lines
4.7 KiB
LLVM
107 lines
4.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -passes=slp-vectorizer < %s | FileCheck %s
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target triple = "x86_64-redhat-linux-gnu"
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; The load+store sequence inside bb10 should not get vectorized. Previously,
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; we incorrectly determined that the pointers do not alias, because a cache
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; entry based indirectly on a disproven NoAlias assumption was not cleared
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; from the BatchAA cache.
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define void @test(ptr %p1, i64 %arg1, i64 %arg2) {
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; CHECK-LABEL: define void @test(
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; CHECK-SAME: ptr [[P1:%.*]], i64 [[ARG1:%.*]], i64 [[ARG2:%.*]]) {
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; CHECK-NEXT: [[_PREHEADER48_PREHEADER_1:.*]]:
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; CHECK-NEXT: br label %[[_LOOPEXIT49_1:.*]]
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; CHECK: [[_LOOPEXIT49_1]]:
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; CHECK-NEXT: [[I:%.*]] = phi ptr [ [[I21:%.*]], %[[BB20:.*]] ], [ [[P1]], %[[_PREHEADER48_PREHEADER_1]] ]
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; CHECK-NEXT: br i1 false, label %[[BB22:.*]], label %[[DOTPREHEADER48_PREHEADER_1:.*]]
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; CHECK: [[DEAD:.*]]:
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; CHECK-NEXT: br label %[[DOTPREHEADER48_PREHEADER_1]]
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; CHECK: [[_PREHEADER48_PREHEADER_2:.*:]]
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; CHECK-NEXT: [[I5:%.*]] = phi ptr [ [[I]], %[[DEAD]] ], [ [[I]], %[[_LOOPEXIT49_1]] ]
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; CHECK-NEXT: br label %[[DOTLOOPEXIT49_1:.*]]
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; CHECK: [[DEAD1:.*]]:
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; CHECK-NEXT: br i1 false, label %[[DOTLOOPEXIT49_1]], label %[[BB20]]
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; CHECK: [[_LOOPEXIT49_2:.*:]]
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; CHECK-NEXT: [[I6:%.*]] = phi ptr [ [[I5]], %[[DEAD1]] ], [ [[I5]], %[[DOTPREHEADER48_PREHEADER_1]] ]
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; CHECK-NEXT: [[I7:%.*]] = getelementptr i8, ptr [[I6]], i64 [[ARG1]]
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; CHECK-NEXT: br label %[[BB10:.*]]
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; CHECK: [[DEAD2:.*]]:
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; CHECK-NEXT: br label %[[BB10]]
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; CHECK: [[BB10]]:
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; CHECK-NEXT: [[I11:%.*]] = phi ptr [ [[I7]], %[[DOTLOOPEXIT49_1]] ], [ null, %[[DEAD2]] ]
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; CHECK-NEXT: [[I16:%.*]] = getelementptr i8, ptr [[I11]], i64 8
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; CHECK-NEXT: [[I17:%.*]] = load i64, ptr [[I16]], align 1
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; CHECK-NEXT: store i64 [[I17]], ptr [[I6]], align 1
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; CHECK-NEXT: [[I18:%.*]] = getelementptr i8, ptr [[I6]], i64 8
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; CHECK-NEXT: [[I19:%.*]] = load i64, ptr [[I11]], align 1
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; CHECK-NEXT: store i64 [[I19]], ptr [[I18]], align 1
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; CHECK-NEXT: br label %[[BB20]]
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; CHECK: [[BB20]]:
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; CHECK-NEXT: [[I21]] = phi ptr [ [[I5]], %[[DEAD1]] ], [ [[I6]], %[[BB10]] ]
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; CHECK-NEXT: br label %[[_LOOPEXIT49_1]]
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; CHECK: [[BB22]]:
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; CHECK-NEXT: [[I23:%.*]] = getelementptr i8, ptr [[I]], i64 [[ARG2]]
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; CHECK-NEXT: [[I25:%.*]] = getelementptr i8, ptr [[I23]], i64 8
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; CHECK-NEXT: br label %[[BB26:.*]]
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; CHECK: [[BB26]]:
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; CHECK-NEXT: [[I27:%.*]] = phi ptr [ null, %[[BB26]] ], [ [[I25]], %[[BB22]] ]
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; CHECK-NEXT: store i64 0, ptr [[I27]], align 1
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; CHECK-NEXT: [[I28:%.*]] = getelementptr i8, ptr [[I27]], i64 8
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; CHECK-NEXT: [[I29:%.*]] = load i64, ptr [[I23]], align 1
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; CHECK-NEXT: store i64 0, ptr [[I28]], align 1
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; CHECK-NEXT: br label %[[BB26]]
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;
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entry:
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br label %loop1
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loop1: ; preds = %bb20, %entry
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%i = phi ptr [ %i21, %bb20 ], [ %p1, %entry ]
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br i1 false, label %bb22, label %.preheader48.preheader.1
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dead: ; No predecessors!
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br label %.preheader48.preheader.1
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.preheader48.preheader.1: ; preds = %dead, %loop1
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%i5 = phi ptr [ %i, %dead ], [ %i, %loop1 ]
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br label %.loopexit49.1
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dead1: ; No predecessors!
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br i1 false, label %.loopexit49.1, label %bb20
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.loopexit49.1: ; preds = %dead1, %.preheader48.preheader.1
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%i6 = phi ptr [ %i5, %dead1 ], [ %i5, %.preheader48.preheader.1 ]
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%i7 = getelementptr i8, ptr %i6, i64 %arg1
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br label %bb10
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dead2: ; No predecessors!
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br label %bb10
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bb10: ; preds = %dead2, %.loopexit49.1
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%i11 = phi ptr [ %i7, %.loopexit49.1 ], [ null, %dead2 ]
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%i16 = getelementptr i8, ptr %i11, i64 8
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%i17 = load i64, ptr %i16, align 1
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store i64 %i17, ptr %i6, align 1
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%i18 = getelementptr i8, ptr %i6, i64 8
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%i19 = load i64, ptr %i11, align 1
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store i64 %i19, ptr %i18, align 1
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br label %bb20
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bb20: ; preds = %bb10, %dead1
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%i21 = phi ptr [ %i5, %dead1 ], [ %i6, %bb10 ]
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br label %loop1
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bb22: ; preds = %loop1
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%i23 = getelementptr i8, ptr %i, i64 %arg2
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%i25 = getelementptr i8, ptr %i23, i64 8
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br label %bb26
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bb26: ; preds = %bb26, %bb22
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%i27 = phi ptr [ null, %bb26 ], [ %i25, %bb22 ]
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store i64 0, ptr %i27, align 1
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%i28 = getelementptr i8, ptr %i27, i64 8
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%i29 = load i64, ptr %i23, align 1
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store i64 0, ptr %i28, align 1
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br label %bb26
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}
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