From 3ed60a2a2253fd519a2b2e48cacce10856198b62 Mon Sep 17 00:00:00 2001 From: Eli Friedman Date: Thu, 15 Jul 2010 04:46:14 +0000 Subject: [PATCH] Add AssertingVH which makes PR7647 break consistently. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108401 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Analysis/InstructionSimplify.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/lib/Analysis/InstructionSimplify.cpp b/lib/Analysis/InstructionSimplify.cpp index dbefc2dedb2..0efe183a998 100644 --- a/lib/Analysis/InstructionSimplify.cpp +++ b/lib/Analysis/InstructionSimplify.cpp @@ -443,7 +443,9 @@ void llvm::ReplaceAndSimplifyAllUses(Instruction *From, Value *To, // FromHandle - This keeps a weakvh on the from value so that we can know if // it gets deleted out from under us in a recursive simplification. WeakVH FromHandle(From); - + // Double-check that To isn't deleted. + AssertingVH<> CheckedTo = To; + while (!From->use_empty()) { // Update the instruction to use the new value. Use &U = From->use_begin().getUse(); -- 2.34.1