Remove some dead assignements found by scan-build

[oota-llvm.git] / tools / llc / llc.cpp

diff --git a/tools/llc/llc.cpp b/tools/llc/llc.cpp
index 1dce9d7b60112c639c704074d02d2909bbcdec27..8fbdc49e5eeb14ff90f6f5a624c7a4333418d0c2 100644 (file)
--- a/tools/llc/llc.cpp
+++ b/tools/llc/llc.cpp
@@ -13,13 +13,14 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/IR/LLVMContext.h"
+
 #include "llvm/ADT/Triple.h"
-#include "llvm/Assembly/PrintModulePass.h"
 #include "llvm/CodeGen/CommandFlags.h"
 #include "llvm/CodeGen/LinkAllAsmWriterComponents.h"
 #include "llvm/CodeGen/LinkAllCodegenComponents.h"
 #include "llvm/IR/DataLayout.h"
+#include "llvm/IR/IRPrintingPasses.h"
+#include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IRReader/IRReader.h"
 #include "llvm/MC/SubtargetFeature.h"
@@ -57,6 +58,10 @@ TimeCompilations("time-compilations", cl::Hidden, cl::init(1u),
                  cl::value_desc("N"),
                  cl::desc("Repeat compilation N times for timing"));
 
+static cl::opt<bool>
+NoIntegratedAssembler("no-integrated-as", cl::Hidden,
+                      cl::desc("Disable integrated assembler"));
+
 // Determine optimization level.
 static cl::opt<char>
 OptLevel("O",
@@ -144,8 +149,9 @@ static tool_output_file *GetOutputStream(const char *TargetName,
 
   // Open the file.
   std::string error;
-  unsigned OpenFlags = 0;
-  if (Binary) OpenFlags |= raw_fd_ostream::F_Binary;
+  sys::fs::OpenFlags OpenFlags = sys::fs::F_None;
+  if (!Binary)
+    OpenFlags |= sys::fs::F_Text;
   tool_output_file *FDOut = new tool_output_file(OutputFilename.c_str(), error,
                                                  OpenFlags);
   if (!error.empty()) {
@@ -200,7 +206,7 @@ int main(int argc, char **argv) {
 static int compileModule(char **argv, LLVMContext &Context) {
   // Load the module to be compiled...
   SMDiagnostic Err;
-  std::auto_ptr<Module> M;
+  std::unique_ptr<Module> M;
   Module *mod = 0;
   Triple TheTriple;
 
@@ -257,41 +263,16 @@ static int compileModule(char **argv, LLVMContext &Context) {
   case '3': OLvl = CodeGenOpt::Aggressive; break;
   }
 
-  TargetOptions Options;
-  Options.LessPreciseFPMADOption = EnableFPMAD;
-  Options.NoFramePointerElim = DisableFPElim;
-  Options.NoFramePointerElimNonLeaf = DisableFPElimNonLeaf;
-  Options.AllowFPOpFusion = FuseFPOps;
-  Options.UnsafeFPMath = EnableUnsafeFPMath;
-  Options.NoInfsFPMath = EnableNoInfsFPMath;
-  Options.NoNaNsFPMath = EnableNoNaNsFPMath;
-  Options.HonorSignDependentRoundingFPMathOption =
-      EnableHonorSignDependentRoundingFPMath;
-  Options.UseSoftFloat = GenerateSoftFloatCalls;
-  if (FloatABIForCalls != FloatABI::Default)
-    Options.FloatABIType = FloatABIForCalls;
-  Options.NoZerosInBSS = DontPlaceZerosInBSS;
-  Options.GuaranteedTailCallOpt = EnableGuaranteedTailCallOpt;
-  Options.DisableTailCalls = DisableTailCalls;
-  Options.StackAlignmentOverride = OverrideStackAlignment;
-  Options.RealignStack = EnableRealignStack;
-  Options.TrapFuncName = TrapFuncName;
-  Options.PositionIndependentExecutable = EnablePIE;
-  Options.EnableSegmentedStacks = SegmentedStacks;
-  Options.UseInitArray = UseInitArray;
-  Options.SSPBufferSize = SSPBufferSize;
-
-  std::auto_ptr<TargetMachine>
-    target(TheTarget->createTargetMachine(TheTriple.getTriple(),
-                                          MCPU, FeaturesStr, Options,
-                                          RelocModel, CMModel, OLvl));
+  TargetOptions Options = InitTargetOptionsFromCodeGenFlags();
+  Options.DisableIntegratedAS = NoIntegratedAssembler;
+
+  std::unique_ptr<TargetMachine> target(
+      TheTarget->createTargetMachine(TheTriple.getTriple(), MCPU, FeaturesStr,
+                                     Options, RelocModel, CMModel, OLvl));
   assert(target.get() && "Could not allocate target machine!");
   assert(mod && "Should have exited after outputting help!");
   TargetMachine &Target = *target.get();
 
-  if (DisableDotLoc)
-    Target.setMCUseLoc(false);
-
   if (DisableCFI)
     Target.setMCUseCFI(false);
 
@@ -301,14 +282,9 @@ static int compileModule(char **argv, LLVMContext &Context) {
   if (GenerateSoftFloatCalls)
     FloatABIForCalls = FloatABI::Soft;
 
-  // Disable .loc support for older OS X versions.
-  if (TheTriple.isMacOSX() &&
-      TheTriple.isMacOSXVersionLT(10, 6))
-    Target.setMCUseLoc(false);
-
   // Figure out where we are going to send the output.
-  OwningPtr<tool_output_file> Out
-    (GetOutputStream(TheTarget->getName(), TheTriple.getOS(), argv[0]));
+  std::unique_ptr<tool_output_file> Out(
+      GetOutputStream(TheTarget->getName(), TheTriple.getOS(), argv[0]));
   if (!Out) return 1;
 
   // Build up all of the passes that we want to do to the module.
@@ -320,14 +296,10 @@ static int compileModule(char **argv, LLVMContext &Context) {
     TLI->disableAllFunctions();
   PM.add(TLI);
 
-  // Add intenal analysis passes from the target machine.
-  Target.addAnalysisPasses(PM);
-
   // Add the target data from the target machine, if it exists, or the module.
-  if (const DataLayout *TD = Target.getDataLayout())
-    PM.add(new DataLayout(*TD));
-  else
-    PM.add(new DataLayout(mod));
+  if (const DataLayout *DL = Target.getDataLayout())
+    mod->setDataLayout(DL);
+  PM.add(new DataLayoutPass(mod));
 
   // Override default to generate verbose assembly.
   Target.setAsmVerbosityDefault(true);