3053a323c7
If globals-aa is enabled, because of the deletion of memory instructions, there may be call instruction that is not in ModOrRefSet but is a MemoryUseOrDef. This causes the crash in the process of cloning uses and defs. Fixes https://github.com/llvm/llvm-project/issues/58719 Reviewed By: asbirlea Differential Revision: https://reviews.llvm.org/D137553
22 lines
719 B
LLVM
22 lines
719 B
LLVM
; RUN: opt -passes="require<globals-aa>,cgscc(instcombine),function(loop-mssa(loop-simplifycfg)),recompute-globalsaa,function(loop-mssa(simple-loop-unswitch<nontrivial>),print<memoryssa>)" -disable-output < %s
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; Check that don't crash if the Alias Analysis returns better results than
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; before when cloning loop's memoryssa.
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define void @f(ptr %p) {
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entry:
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%0 = load i16, ptr %p, align 1
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ret void
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}
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define void @g(i1 %tobool.not) {
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entry:
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br label %for.cond
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for.cond: ; preds = %if.then, %for.cond, %entry
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br i1 %tobool.not, label %if.then, label %for.cond
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if.then: ; preds = %for.cond
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call void @f()
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br label %for.cond
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}
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