[llvm-commits] [llvm] r61047 - /llvm/trunk/lib/Transforms/IPO/GlobalOpt.cpp

[Chris Lattner]

Author: lattner
Date: Mon Dec 15 15:20:32 2008
New Revision: 61047

URL: http://llvm.org/viewvc/llvm-project?rev=61047&view=rev
Log:
Use stripPointerCasts.

Modified:
    llvm/trunk/lib/Transforms/IPO/GlobalOpt.cpp

Modified: llvm/trunk/lib/Transforms/IPO/GlobalOpt.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/IPO/GlobalOpt.cpp?rev=61047&r1=61046&r2=61047&view=diff

==============================================================================
--- llvm/trunk/lib/Transforms/IPO/GlobalOpt.cpp (original)
+++ llvm/trunk/lib/Transforms/IPO/GlobalOpt.cpp Mon Dec 15 15:20:32 2008
@@ -1358,13 +1358,8 @@
 static bool OptimizeOnceStoredGlobal(GlobalVariable *GV, Value *StoredOnceVal,
                                      Module::global_iterator &GVI,
                                      TargetData &TD) {
-  if (BitCastInst *CI = dyn_cast<BitCastInst>(StoredOnceVal))
-    StoredOnceVal = CI->getOperand(0);
-  else if (GetElementPtrInst *GEPI =dyn_cast<GetElementPtrInst>(StoredOnceVal)){
-    // "getelementptr Ptr, 0, 0, 0" is really just a cast.
-    if (GEPI->hasAllZeroIndices())
-      StoredOnceVal = GEPI->getOperand(0);
-  }
+  // Ignore no-op GEPs and bitcasts.
+  StoredOnceVal = StoredOnceVal->stripPointerCasts();
 
   // If we are dealing with a pointer global that is initialized to null and
   // only has one (non-null) value stored into it, then we can optimize any