Add AssertingVH which makes PR7647 break consistently.
llvm-svn: 108401
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@ -443,7 +443,9 @@ void llvm::ReplaceAndSimplifyAllUses(Instruction *From, Value *To,
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// FromHandle - This keeps a weakvh on the from value so that we can know if
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// it gets deleted out from under us in a recursive simplification.
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WeakVH FromHandle(From);
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// Double-check that To isn't deleted.
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AssertingVH<> CheckedTo = To;
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while (!From->use_empty()) {
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// Update the instruction to use the new value.
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Use &U = From->use_begin().getUse();
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