From 16fe990e56102a355f1e77aca93bf8c79d7b9eb2 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Fri, 17 Jul 2009 22:00:23 +0000
Subject: [PATCH] remove AsmPrinter::findGlobalValue, just use
 Value::stripPointerCasts instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76246 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/CodeGen/AsmPrinter.h     |  1 -
 lib/CodeGen/AsmPrinter/AsmPrinter.cpp | 31 +++------------------------
 2 files changed, 3 insertions(+), 29 deletions(-)

diff --git a/include/llvm/CodeGen/AsmPrinter.h b/include/llvm/CodeGen/AsmPrinter.h
index fcedef2891b..c15e279d946 100644
--- a/include/llvm/CodeGen/AsmPrinter.h
+++ b/include/llvm/CodeGen/AsmPrinter.h
@@ -395,7 +395,6 @@ namespace llvm {
     void printOffset(int64_t Offset) const;
  
   private:
-    const GlobalValue *findGlobalValue(const Constant* CV);
     void EmitLLVMUsedList(Constant *List);
     void EmitXXStructorList(Constant *List);
     void EmitGlobalConstantStruct(const ConstantStruct* CVS,
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index e352922fee7..a2d154f1ee6 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -500,35 +500,9 @@ bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
   return false;
 }
 
-/// findGlobalValue - if CV is an expression equivalent to a single
-/// global value, return that value.
-const GlobalValue * AsmPrinter::findGlobalValue(const Constant *CV) {
-  if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV))
-    return GV;
-  else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
-    const TargetData *TD = TM.getTargetData();
-    unsigned Opcode = CE->getOpcode();    
-    switch (Opcode) {
-    case Instruction::GetElementPtr: {
-      const Constant *ptrVal = CE->getOperand(0);
-      SmallVector<Value*, 8> idxVec(CE->op_begin()+1, CE->op_end());
-      if (TD->getIndexedOffset(ptrVal->getType(), &idxVec[0], idxVec.size()))
-        return 0;
-      return findGlobalValue(ptrVal);
-    }
-    case Instruction::BitCast:
-      return findGlobalValue(CE->getOperand(0));
-    default:
-      return 0;
-    }
-  }
-  return 0;
-}
-
 /// EmitLLVMUsedList - For targets that define a TAI::UsedDirective, mark each
 /// global in the specified llvm.used list for which emitUsedDirectiveFor
 /// is true, as being used with this directive.
-
 void AsmPrinter::EmitLLVMUsedList(Constant *List) {
   const char *Directive = TAI->getUsedDirective();
 
@@ -537,8 +511,9 @@ void AsmPrinter::EmitLLVMUsedList(Constant *List) {
   if (InitList == 0) return;
   
   for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
-    const GlobalValue *GV = findGlobalValue(InitList->getOperand(i));
-    if (TAI->emitUsedDirectiveFor(GV, Mang)) {
+    const GlobalValue *GV =
+      dyn_cast<GlobalValue>(InitList->getOperand(i)->stripPointerCasts());
+    if (GV && TAI->emitUsedDirectiveFor(GV, Mang)) {
       O << Directive;
       EmitConstantValueOnly(InitList->getOperand(i));
       O << '\n';