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223cb7d841
Summary: A reprise of D25849. This crash was found through fuzzing some time ago and was documented in PR28879. No check for load size has been added due to the following tests: - Transforms/GVN/invariant.group.ll - Transforms/GVN/pr10820.ll These tests expect load sizes that are not a multiple of eight. Thanks to @davide for the original patch. Reviewers: nlopes, davide, RKSimon, reames, efriedma Reviewed By: efriedma Subscribers: davide, llvm-commits, Prazek Differential Revision: https://reviews.llvm.org/D48330 llvm-svn: 335294
35 lines
832 B
LLVM
35 lines
832 B
LLVM
; RUN: opt -gvn <%s -S -o - | FileCheck %s
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define void @f() {
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entry:
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%a = alloca <7 x i1>, align 2
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store <7 x i1> undef, <7 x i1>* %a, align 2
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; CHECK: store <7 x i1> undef, <7 x i1>*
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%0 = getelementptr inbounds <7 x i1>, <7 x i1>* %a, i64 0, i64 0
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%val = load i1, i1* %0, align 2
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; CHECK: load i1, i1*
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br i1 %val, label %cond.true, label %cond.false
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cond.true:
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ret void
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cond.false:
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ret void
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}
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define <7 x i1> @g(<7 x i1>* %a) {
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entry:
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%vec = load <7 x i1>, <7 x i1>* %a
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; CHECK: load <7 x i1>, <7 x i1>*
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%0 = getelementptr inbounds <7 x i1>, <7 x i1>* %a, i64 0, i64 0
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%val = load i1, i1* %0, align 2
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; CHECK: load i1, i1*
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br i1 %val, label %cond.true, label %cond.false
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cond.true:
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ret <7 x i1> %vec
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cond.false:
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ret <7 x i1> <i1 false, i1 false, i1 false, i1 false, i1 false, i1 false, i1 false>
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}
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