Delete dead line

[oota-llvm.git] / lib / Transforms / LevelRaise.cpp

diff --git a/lib/Transforms/LevelRaise.cpp b/lib/Transforms/LevelRaise.cpp
index 9f93c27f5382c8d7e3c718bc39b29a57e180b0d0..c5be82fca7bd1adc130a7a53585fb1a8e69208c4 100644 (file)
--- a/lib/Transforms/LevelRaise.cpp
+++ b/lib/Transforms/LevelRaise.cpp
@@ -1,4 +1,11 @@
-//===- LevelRaise.cpp - Code to change LLVM to higher level -----------------=//
+//===- LevelRaise.cpp - Code to change LLVM to higher level ---------------===//
+// 
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// 
+//===----------------------------------------------------------------------===//
 //
 // This file implements the 'raising' part of the LevelChange API.  This is
 // useful because, in general, it makes the LLVM code terser and easier to
@@ -6,7 +13,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/Transforms/RaisePointerReferences.h"
+#include "llvm/Transforms/Scalar.h"
 #include "llvm/Transforms/Utils/Local.h"
 #include "TransformInternals.h"
 #include "llvm/iOther.h"
@@ -16,11 +23,13 @@
 #include "llvm/Analysis/Expressions.h"
 #include "llvm/Analysis/Verifier.h"
 #include "llvm/Transforms/Utils/BasicBlockUtils.h"
-#include "Support/STLExtras.h"
-#include "Support/Statistic.h"
 #include "Support/CommandLine.h"
+#include "Support/Debug.h"
+#include "Support/Statistic.h"
+#include "Support/STLExtras.h"
 #include <algorithm>
-using std::cerr;
+
+namespace llvm {
 
 // StartInst - This enables the -raise-start-inst=foo option to cause the level
 // raising pass to start at instruction "foo", which is immensely useful for
@@ -48,7 +57,6 @@ NumDCEorCP("raise", "Number of insts DCEd or constprop'd");
 static Statistic<>
 NumVarargCallChanges("raise", "Number of vararg call peepholes");
 
-
 #define PRINT_PEEPHOLE(ID, NUM, I)            \
   DEBUG(std::cerr << "Inst P/H " << ID << "[" << NUM << "] " << I)
 
@@ -79,12 +87,12 @@ namespace {
   RegisterOpt<RPR> X("raise", "Raise Pointer References");
 }
 
+
 Pass *createRaisePointerReferencesPass() {
   return new RPR();
 }
 
 
-
 // isReinterpretingCast - Return true if the cast instruction specified will
 // cause the operand to be "reinterpreted".  A value is reinterpreted if the
 // cast instruction would cause the underlying bits to change.
@@ -274,7 +282,7 @@ bool RPR::PeepholeOptimize(BasicBlock *BB, BasicBlock::iterator &BI) {
       if (ExpressionConvertibleToType(Src, DestTy, ConvertedTypes, TD)) {
         PRINT_PEEPHOLE3("CAST-SRC-EXPR-CONV:in ", Src, CI, BB->getParent());
           
-        DEBUG(cerr << "\nCONVERTING SRC EXPR TYPE:\n");
+        DEBUG(std::cerr << "\nCONVERTING SRC EXPR TYPE:\n");
         { // ValueMap must be destroyed before function verified!
           ValueMapCache ValueMap;
           Value *E = ConvertExpressionToType(Src, DestTy, ValueMap, TD);
@@ -283,7 +291,8 @@ bool RPR::PeepholeOptimize(BasicBlock *BB, BasicBlock::iterator &BI) {
             CI->replaceAllUsesWith(CPV);
           
           PRINT_PEEPHOLE1("CAST-SRC-EXPR-CONV:out", E);
-          DEBUG(cerr << "DONE CONVERTING SRC EXPR TYPE: \n" << BB->getParent());
+          DEBUG(std::cerr << "DONE CONVERTING SRC EXPR TYPE: \n"
+                          << BB->getParent());
         }
 
         DEBUG(assert(verifyFunction(*BB->getParent()) == false &&
@@ -302,14 +311,14 @@ bool RPR::PeepholeOptimize(BasicBlock *BB, BasicBlock::iterator &BI) {
       if (ValueConvertibleToType(CI, Src->getType(), ConvertedTypes, TD)) {
         PRINT_PEEPHOLE3("CAST-DEST-EXPR-CONV:in ", Src, CI, BB->getParent());
 
-        DEBUG(cerr << "\nCONVERTING EXPR TYPE:\n");
+        DEBUG(std::cerr << "\nCONVERTING EXPR TYPE:\n");
         { // ValueMap must be destroyed before function verified!
           ValueMapCache ValueMap;
           ConvertValueToNewType(CI, Src, ValueMap, TD);  // This will delete CI!
         }
 
         PRINT_PEEPHOLE1("CAST-DEST-EXPR-CONV:out", Src);
-        DEBUG(cerr << "DONE CONVERTING EXPR TYPE: \n\n" << BB->getParent());
+        DEBUG(std::cerr << "DONE CONVERTING EXPR TYPE: \n\n" << BB->getParent());
 
         DEBUG(assert(verifyFunction(*BB->getParent()) == false &&
                      "Function broken!"));
@@ -556,11 +565,11 @@ bool RPR::DoRaisePass(Function &F) {
   bool Changed = false;
   for (Function::iterator BB = F.begin(), BBE = F.end(); BB != BBE; ++BB)
     for (BasicBlock::iterator BI = BB->begin(); BI != BB->end();) {
-      DEBUG(cerr << "Processing: " << *BI);
+      DEBUG(std::cerr << "Processing: " << *BI);
       if (dceInstruction(BI) || doConstantPropagation(BI)) {
         Changed = true; 
         ++NumDCEorCP;
-        DEBUG(cerr << "***\t\t^^-- Dead code eliminated!\n");
+        DEBUG(std::cerr << "***\t\t^^-- Dead code eliminated!\n");
       } else if (PeepholeOptimize(BB, BI)) {
         Changed = true;
       } else {
@@ -574,7 +583,8 @@ bool RPR::DoRaisePass(Function &F) {
 
 // runOnFunction - Raise a function representation to a higher level.
 bool RPR::runOnFunction(Function &F) {
-  DEBUG(cerr << "\n\n\nStarting to work on Function '" << F.getName() << "'\n");
+  DEBUG(std::cerr << "\n\n\nStarting to work on Function '" << F.getName()
+                  << "'\n");
 
   // Insert casts for all incoming pointer pointer values that are treated as
   // arrays...
@@ -596,7 +606,7 @@ bool RPR::runOnFunction(Function &F) {
   }
 
   do {
-    DEBUG(cerr << "Looping: \n" << F);
+    DEBUG(std::cerr << "Looping: \n" << F);
 
     // Iterate over the function, refining it, until it converges on a stable
     // state
@@ -608,3 +618,5 @@ bool RPR::runOnFunction(Function &F) {
 
   return Changed;
 }
+
+} // End llvm namespace