From 157b2525f91f58508f970d6989135be260f9d5e7 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Wed, 6 Oct 2004 19:29:13 +0000 Subject: [PATCH] Dont' let null nodes sneak past cast instructions git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16779 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Analysis/DataStructure/Local.cpp | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/lib/Analysis/DataStructure/Local.cpp b/lib/Analysis/DataStructure/Local.cpp index 070d03738d9..b497c3849c9 100644 --- a/lib/Analysis/DataStructure/Local.cpp +++ b/lib/Analysis/DataStructure/Local.cpp @@ -950,8 +950,11 @@ void GraphBuilder::visitFreeInst(FreeInst &FI) { void GraphBuilder::visitCastInst(CastInst &CI) { if (isPointerType(CI.getType())) if (isPointerType(CI.getOperand(0)->getType())) { + DSNodeHandle Ptr = getValueDest(*CI.getOperand(0)); + if (Ptr.getNode() == 0) return; + // Cast one pointer to the other, just act like a copy instruction - setDestTo(CI, getValueDest(*CI.getOperand(0))); + setDestTo(CI, Ptr); } else { // Cast something (floating point, small integer) to a pointer. We need // to track the fact that the node points to SOMETHING, just something we -- 2.11.0