From: Chris Lattner <sabre@nondot.org>
Date: Fri, 28 Nov 2008 00:58:15 +0000 (+0000)
Subject: remove some weirdness that came from the LSR code that has
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2872177834d83b42cd042a37299cb7089965f36b;p=oota-llvm.git

remove some weirdness that came from the LSR code that has
nothing to do with dead instruction elimination.  No tests in
dejagnu depend on this, so I don't know what it was needed for.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60202 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Utils/Local.cpp b/lib/Transforms/Utils/Local.cpp
index cab7f03ab0f..17ae9719011 100644
--- a/lib/Transforms/Utils/Local.cpp
+++ b/lib/Transforms/Utils/Local.cpp
@@ -190,14 +190,7 @@ void llvm::RecursivelyDeleteTriviallyDeadInstructions(Value *V,
   while (!Insts.empty()) {
     I = *Insts.begin();
     Insts.erase(I);
-    
-    // If this is a PHI node, we may be able to make it dead if we know all the
-    // input values are the same.
-    if (PHINode *PN = dyn_cast<PHINode>(I)) {
-      if (Value *PNV = PN->hasConstantValue())
-        PN->replaceAllUsesWith(PNV);
-    }
-    
+
     // Okay, if the instruction is dead, delete it.
     if (!isInstructionTriviallyDead(I))
       continue;