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[oota-llvm.git] / lib / CodeGen / LLVMTargetMachine.cpp

diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp
index f1975b7c5caa07a1665fe6ff9cfefea5cca2272c..b98fbed695b27cf8ac4cc7db6fa54396798d4b62 100644 (file)
--- a/lib/CodeGen/LLVMTargetMachine.cpp
+++ b/lib/CodeGen/LLVMTargetMachine.cpp
@@ -13,6 +13,7 @@
 
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/PassManager.h"
+#include "llvm/Analysis/Passes.h"
 #include "llvm/Analysis/Verifier.h"
 #include "llvm/Assembly/PrintModulePass.h"
 #include "llvm/CodeGen/AsmPrinter.h"
@@ -32,7 +33,6 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/FormattedStream.h"
-#include "llvm/Support/StandardPasses.h"
 using namespace llvm;
 
 namespace llvm {
@@ -126,6 +126,9 @@ bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
     return true;
   assert(Context != 0 && "Failed to get MCContext");
 
+  if (hasMCSaveTempLabels())
+    Context->setAllowTemporaryLabels(false);
+
   const MCAsmInfo &MAI = *getMCAsmInfo();
   OwningPtr<MCStreamer> AsmStreamer;
 
@@ -133,7 +136,7 @@ bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
   default: return true;
   case CGFT_AssemblyFile: {
     MCInstPrinter *InstPrinter =
-      getTarget().createMCInstPrinter(MAI.getAssemblerDialect(), MAI);
+      getTarget().createMCInstPrinter(*this, MAI.getAssemblerDialect(), MAI);
 
     // Create a code emitter if asked to show the encoding.
     MCCodeEmitter *MCE = 0;
@@ -146,6 +149,7 @@ bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
     MCStreamer *S = getTarget().createAsmStreamer(*Context, Out,
                                                   getVerboseAsm(),
                                                   hasMCUseLoc(),
+                                                  hasMCUseCFI(),
                                                   InstPrinter,
                                                   MCE, TAB,
                                                   ShowMCInst);
@@ -224,11 +228,40 @@ bool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM,
 ///
 bool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM,
                                           MCContext *&Ctx,
+                                          raw_ostream &Out,
                                           CodeGenOpt::Level OptLevel,
                                           bool DisableVerify) {
   // Add common CodeGen passes.
   if (addCommonCodeGenPasses(PM, OptLevel, DisableVerify, Ctx))
     return true;
+
+  if (hasMCSaveTempLabels())
+    Ctx->setAllowTemporaryLabels(false);
+
+  // Create the code emitter for the target if it exists.  If not, .o file
+  // emission fails.
+  MCCodeEmitter *MCE = getTarget().createCodeEmitter(*this, *Ctx);
+  TargetAsmBackend *TAB = getTarget().createAsmBackend(TargetTriple);
+  if (MCE == 0 || TAB == 0)
+    return true;
+
+  OwningPtr<MCStreamer> AsmStreamer;
+  AsmStreamer.reset(getTarget().createObjectStreamer(TargetTriple, *Ctx,
+                                                     *TAB, Out, MCE,
+                                                     hasMCRelaxAll(),
+                                                     hasMCNoExecStack()));
+  AsmStreamer.get()->InitSections();
+
+  // Create the AsmPrinter, which takes ownership of AsmStreamer if successful.
+  FunctionPass *Printer = getTarget().createAsmPrinter(*this, *AsmStreamer);
+  if (Printer == 0)
+    return true;
+
+  // If successful, createAsmPrinter took ownership of AsmStreamer.
+  AsmStreamer.take();
+
+  PM.add(Printer);
+
   // Make sure the code model is set.
   setCodeModelForJIT();
 
@@ -259,13 +292,21 @@ bool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM,
   // Standard LLVM-Level Passes.
 
   // Basic AliasAnalysis support.
-  createStandardAliasAnalysisPasses(&PM);
+  // Add TypeBasedAliasAnalysis before BasicAliasAnalysis so that
+  // BasicAliasAnalysis wins if they disagree. This is intended to help
+  // support "obvious" type-punning idioms.
+  PM.add(createTypeBasedAliasAnalysisPass());
+  PM.add(createBasicAliasAnalysisPass());
 
   // Before running any passes, run the verifier to determine if the input
   // coming from the front-end and/or optimizer is valid.
   if (!DisableVerify)
     PM.add(createVerifierPass());
 
+  // Simplify ObjC ARC code. This is done late because it makes re-optimization
+  // difficult.
+  PM.add(createObjCARCContractPass());
+
   // Run loop strength reduction before anything else.
   if (OptLevel != CodeGenOpt::None && !DisableLSR) {
     PM.add(createLoopStrengthReducePass(getTargetLowering()));
@@ -291,7 +332,8 @@ bool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM,
     PM.add(createSjLjEHPass(getTargetLowering()));
     // FALLTHROUGH
   case ExceptionHandling::DwarfCFI:
-  case ExceptionHandling::DwarfTable:
+  case ExceptionHandling::ARM:
+  case ExceptionHandling::Win64:
     PM.add(createDwarfEHPass(this));
     break;
   case ExceptionHandling::None: