Allow ability to name unnamed global addresses in Subzero.

src/IceTranslator.cpp

 //===- subzero/src/IceTranslator.cpp - ICE to machine code ------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file defines the general driver class for translating ICE to
 // machine code.
 //
 //===----------------------------------------------------------------------===//
 
 #include "IceTranslator.h"
 
 #include "IceCfg.h"
 #include "IceClFlags.h"
+#include "IceDefs.h"
 #include "IceTargetLowering.h"
+#include "llvm/IR/Module.h"
 
 #include <iostream>
 
 using namespace Ice;
 
 Translator::~Translator() {}
 
-void Translator::translateFcn(Ice::Cfg *Fcn) {
+namespace {
+void setValueName(llvm::Value *V, const char *Kind, const IceString &Prefix,
+                  uint32_t &NameIndex, Ostream &errs) {
+  if (V->hasName()) {
+    const std::string &Name(V->getName());
+    if (Name.find(Prefix) == 0) {
+      errs << "Warning: Default " << Kind << " prefix '" << Prefix
+           << "' conflicts with name '" << Name << "'.\n";
+    }
+    return;
+  }
+  if (NameIndex == 0) {
+    V->setName(Prefix);
+    ++NameIndex;
+    return;
+  }
+  std::string Buffer;
+  llvm::raw_string_ostream StrBuf(Buffer);
+  StrBuf << Prefix << NameIndex;
+  V->setName(StrBuf.str());
+  ++NameIndex;
+}
+} // end of anonymous namespace
+
+void Translator::nameUnnamedGlobalAddresses(llvm::Module *Mod) {
+  const IceString &GlobalPrefix = Flags.DefaultGlobalPrefix;
+  Ostream &errs = Ctx->getStrDump();
+  if (!GlobalPrefix.empty()) {
+    uint32_t NameIndex = 0;
+    for (llvm::Module::global_iterator I = Mod->global_begin(),
+                                       E = Mod->global_end();
+         I != E; ++I) {
+      setValueName(I, "global", GlobalPrefix, NameIndex, errs);
+    }
+  }
+  const IceString &FunctionPrefix = Flags.DefaultFunctionPrefix;
+  if (FunctionPrefix.empty())
+    return;
+  uint32_t NameIndex = 0;
+  for (llvm::Module::iterator I = Mod->begin(), E = Mod->end(); I != E; ++I) {
+    setValueName(I, "function", FunctionPrefix, NameIndex, errs);
+  }
+}
+
+void Translator::translateFcn(Cfg *Fcn) {
   Func.reset(Fcn);
   if (Ctx->getFlags().DisableInternal)
     Func->setInternal(false);
   if (Ctx->getFlags().DisableTranslation) {
     Func->dump();
   } else {
-    Ice::Timer TTranslate;
+    Timer TTranslate;
     Func->translate();
     if (Ctx->getFlags().SubzeroTimingEnabled) {
       std::cerr << "[Subzero timing] Translate function "
                 << Func->getFunctionName() << ": " << TTranslate.getElapsedSec()
                 << " sec\n";
     }
     if (Func->hasError()) {
       std::cerr << "ICE translation error: " << Func->getError() << "\n";
       ErrorStatus = true;
     }
 
-    Ice::Timer TEmit;
+    Timer TEmit;
     Func->emit();
     if (Ctx->getFlags().SubzeroTimingEnabled) {
       std::cerr << "[Subzero timing] Emit function " << Func->getFunctionName()
                 << ": " << TEmit.getElapsedSec() << " sec\n";
     }
   }
 }
 
 void Translator::emitConstants() {
   if (!Ctx->getFlags().DisableTranslation && Func)
     Func->getTarget()->emitConstants();
 }