5ce47a5813
A dominance query of a block that is in a different function is ill-defined, so assert that getNode() is only called for blocks that are in the same function. There are three cases, where this behavior did occur. LoopFuse didn't explicitly do this, but didn't invalidate the SCEV block dispositions, leaving dangling pointers to free'ed basic blocks behind, causing use-after-free. We do, however, want to be able to dereference basic blocks inside the dominator tree, so that we can refer to them by a number stored inside the basic block. Reverts #102780 Reland #101198 Fixes #102784 Co-authored-by: Alexis Engelke <engelke@in.tum.de>
49 lines
1.8 KiB
LLVM
49 lines
1.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -mtriple=x86_64 -passes=slp-vectorizer < %s | FileCheck %s
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; Test that SLP vectorize doesn't crash if a stored constant is used in multiple
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; functions.
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@p = external global [64 x float]
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define void @_Z1hPfl() {
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; CHECK-LABEL: define void @_Z1hPfl() {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: [[TMP0:%.*]] = getelementptr i8, ptr @p, i64 28
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; CHECK-NEXT: store <2 x float> <float 0.000000e+00, float 1.000000e+00>, ptr [[TMP0]], align 4
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; CHECK-NEXT: ret void
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;
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entry:
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%0 = getelementptr i8, ptr @p, i64 28
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store float 0.000000e+00, ptr %0, align 4
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%1 = getelementptr i8, ptr @p, i64 32
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store float 1.000000e+00, ptr %1, align 16
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ret void
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}
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define void @_Z1mv(i64 %arrayidx4.i.2.idx) {
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; CHECK-LABEL: define void @_Z1mv(
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; CHECK-SAME: i64 [[ARRAYIDX4_I_2_IDX:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: ret void
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; CHECK: [[FOR_COND1_PREHEADER_LR_PH_I:.*:]]
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; CHECK-NEXT: br label %[[FOR_COND1_PREHEADER_I:.*]]
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; CHECK: [[FOR_COND1_PREHEADER_I]]:
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; CHECK-NEXT: store float 1.000000e+00, ptr @p, align 4
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; CHECK-NEXT: [[ARRAYIDX4_I_2:%.*]] = getelementptr i8, ptr @p, i64 [[ARRAYIDX4_I_2_IDX]]
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; CHECK-NEXT: store float 0.000000e+00, ptr [[ARRAYIDX4_I_2]], align 4
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; CHECK-NEXT: br label %[[FOR_COND1_PREHEADER_I]]
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;
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entry:
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ret void
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for.cond1.preheader.lr.ph.i: ; No predecessors!
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br label %for.cond1.preheader.i
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for.cond1.preheader.i: ; preds = %for.cond1.preheader.i, %for.cond1.preheader.lr.ph.i
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store float 1.000000e+00, ptr @p, align 4
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%arrayidx4.i.2 = getelementptr i8, ptr @p, i64 %arrayidx4.i.2.idx
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store float 0.000000e+00, ptr %arrayidx4.i.2, align 4
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br label %for.cond1.preheader.i
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}
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