From be905e26f66e1b34fa4b2f5744b948007fd4ed0a Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Thu, 11 Feb 2010 00:20:49 +0000
Subject: [PATCH] Ignore dbg info intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95828 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/GVN.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index 80e0027a174..3ce7482dca7 100644
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -1891,6 +1891,10 @@ Value *GVN::lookupNumber(BasicBlock *BB, uint32_t num) {
 /// by inserting it into the appropriate sets
 bool GVN::processInstruction(Instruction *I,
                              SmallVectorImpl<Instruction*> &toErase) {
+  // Ignore dbg info intrinsics.
+  if (isa<DbgInfoIntrinsic>(I))
+    return false;
+
   if (LoadInst *LI = dyn_cast<LoadInst>(I)) {
     bool Changed = processLoad(LI, toErase);
 
-- 
2.34.1