Move the deadargelim code for intrinsically alive functions into its own

[oota-llvm.git] / lib / Analysis / LoadValueNumbering.cpp

diff --git a/lib/Analysis/LoadValueNumbering.cpp b/lib/Analysis/LoadValueNumbering.cpp
index bbb1e1e1b0dbdfadb7e94a1275e3e8aaa5d0610e..f99ebb4a83d3b50bdbef4a6c9d0105502d44e54e 100644 (file)
--- a/lib/Analysis/LoadValueNumbering.cpp
+++ b/lib/Analysis/LoadValueNumbering.cpp
@@ -82,14 +82,15 @@ namespace {
     void getCallEqualNumberNodes(CallInst *CI,
                                  std::vector<Value*> &RetVals) const;
   };
+}
 
-  char LoadVN::ID = 0;
-  // Register this pass...
-  RegisterPass<LoadVN> X("load-vn", "Load Value Numbering", false, true);
+char LoadVN::ID = 0;
+// Register this pass...
+static RegisterPass<LoadVN>
+X("load-vn", "Load Value Numbering", false, true);
 
-  // Declare that we implement the ValueNumbering interface
-  RegisterAnalysisGroup<ValueNumbering> Y(X);
-}
+// Declare that we implement the ValueNumbering interface
+static RegisterAnalysisGroup<ValueNumbering> Y(X);
 
 FunctionPass *llvm::createLoadValueNumberingPass() { return new LoadVN(); }
 
@@ -116,9 +117,9 @@ static bool isPathTransparentTo(BasicBlock *CurBlock, BasicBlock *Dom,
 
   // Check whether this block is known transparent or not.
   std::map<BasicBlock*, bool>::iterator TBI =
-    TransparentBlocks.lower_bound(CurBlock);
+    TransparentBlocks.find(CurBlock);
 
-  if (TBI == TransparentBlocks.end() || TBI->first != CurBlock) {
+  if (TBI == TransparentBlocks.end()) {
     // If this basic block can modify the memory location, then the path is not
     // transparent!
     if (AA.canBasicBlockModify(*CurBlock, Ptr, Size)) {
@@ -157,10 +158,10 @@ void LoadVN::getCallEqualNumberNodes(CallInst *CI,
   // global.  In particular, we would prefer to have an argument or instruction
   // operand to chase the def-use chains of.
   Value *Op = CF;
-  for (unsigned i = 1, e = CI->getNumOperands(); i != e; ++i)
-    if (isa<Argument>(CI->getOperand(i)) ||
-        isa<Instruction>(CI->getOperand(i))) {
-      Op = CI->getOperand(i);
+  for (User::op_iterator i = CI->op_begin() + 1, e = CI->op_end(); i != e; ++i)
+    if (isa<Argument>(*i) ||
+        isa<Instruction>(*i)) {
+      Op = *i;
       break;
     }
 
@@ -175,8 +176,9 @@ void LoadVN::getCallEqualNumberNodes(CallInst *CI,
           C->getOperand(0) == CI->getOperand(0) &&
           C->getParent()->getParent() == CIFunc && C != CI) {
         bool AllOperandsEqual = true;
-        for (unsigned i = 1, e = CI->getNumOperands(); i != e; ++i)
-          if (C->getOperand(i) != CI->getOperand(i)) {
+        for (User::op_iterator i = CI->op_begin() + 1, j = C->op_begin() + 1,
+             e = CI->op_end(); i != e; ++i, ++j)
+          if (*j != *i) {
             AllOperandsEqual = false;
             break;
           }