From: Bob Wilson <bob.wilson@apple.com>
Date: Tue, 23 Feb 2010 05:55:00 +0000 (+0000)
Subject: Update memdep when load PRE inserts a new load, and add some debug output.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=188f428e4e76d465ac89c275318521bdfbe028eb;p=oota-llvm.git

Update memdep when load PRE inserts a new load, and add some debug output.
I don't have a small testcase for this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96890 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index f015def98f0..164730c3ca0 100644
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -1707,6 +1707,8 @@ bool GVN::processNonLocalLoad(LoadInst *LI,
     // Add the newly created load.
     ValuesPerBlock.push_back(AvailableValueInBlock::get(UnavailablePred,
                                                         NewLoad));
+    MD->invalidateCachedPointerInfo(LoadPtr);
+    DEBUG(dbgs() << "GVN INSERTED " << *NewLoad << '\n');
   }
 
   // Perform PHI construction.