From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Tue, 27 Jan 2015 22:57:35 +0000 (+0000)
Subject: SymbolRewriter: prevent unnecessary rewrite
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=a99980771670fd733d795403de8ed43ce3bc7791

SymbolRewriter: prevent unnecessary rewrite

The rewrite for the pattern based rewrite is unnecessary if the existing name
matches the pattern.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227260 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Utils/SymbolRewriter.cpp b/lib/Transforms/Utils/SymbolRewriter.cpp
index b35a662f17b..c93cdc4b52e 100644
--- a/lib/Transforms/Utils/SymbolRewriter.cpp
+++ b/lib/Transforms/Utils/SymbolRewriter.cpp
@@ -145,6 +145,9 @@ performOnModule(Module &M) {
       report_fatal_error("unable to transforn " + C.getName() + " in " +
                          M.getModuleIdentifier() + ": " + Error);
 
+    if (C.getName() == Name)
+      continue;
+
     if (Value *V = (M.*Get)(Name))
       C.setValueName(V->getValueName());
     else