Eliminate CodeGenOptions::SimplifyLibCalls.

llvm-svn: 90117

clang/include/clang/CodeGen/CodeGenOptions.h

@@ -43,8 +43,6 @@ public:
   unsigned NoZeroInitializedInBSS : 1; /// -fno-zero-initialized-in-bss
   unsigned OptimizationLevel : 3; /// The -O[0-4] option specified.
   unsigned OptimizeSize      : 1; /// If -Os is specified.
-  unsigned SimplifyLibCalls  : 1; /// Should standard library calls be treated
-                                  /// specially.
   unsigned TimePasses        : 1; /// Set when -ftime-report is enabled.
   unsigned UnitAtATime       : 1; /// Unused. For mirroring GCC optimization
                                   /// selection.
@@ -85,7 +83,7 @@ public:
     NoZeroInitializedInBSS = 0;
     OptimizationLevel = 0;
     OptimizeSize = 0;
-    SimplifyLibCalls = UnrollLoops = 0;
+    UnrollLoops = 0;
     TimePasses = 0;
     UnitAtATime = 1;
     UnwindTables = 0;

clang/lib/Driver/CC1Options.cpp

@@ -177,7 +177,6 @@ static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
   Opts.NoCommon = Args.hasArg(OPT_fno_common);
   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
   Opts.OptimizeSize = Args.hasArg(OPT_Os);
-  Opts.SimplifyLibCalls = 1;
   Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
 
   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
@@ -193,8 +192,6 @@ static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
 
   // FIXME: Implement!
   // FIXME: Eliminate this dependency?
-//   if (Lang.NoBuiltin)
-//     Opts.SimplifyLibCalls = 0;
 //   if (Lang.CPlusPlus)
 //     Opts.NoCommon = 1;
 //   Opts.TimePasses = TimePasses;

clang/lib/Frontend/Backend.cpp

@@ -38,8 +38,9 @@ using namespace llvm;
 namespace {
   class BackendConsumer : public ASTConsumer {
     BackendAction Action;
-    CodeGenOptions CodeGenOpts;
-    TargetOptions TargetOpts;
+    const CodeGenOptions &CodeGenOpts;
+    const LangOptions &LangOpts;
+    const TargetOptions &TargetOpts;
     llvm::raw_ostream *AsmOutStream;
     llvm::formatted_raw_ostream FormattedOutStream;
     ASTContext *Context;
@@ -79,6 +80,7 @@ namespace {
                     llvm::raw_ostream* OS, LLVMContext& C) :
       Action(action),
       CodeGenOpts(compopts),
+      LangOpts(langopts),
       TargetOpts(targetopts),
       AsmOutStream(OS),
       LLVMIRGeneration("LLVM IR Generation Time"),
@@ -249,7 +251,7 @@ bool BackendConsumer::AddEmitPasses(std::string &Error) {
     if (TargetOpts.CPU.size() || TargetOpts.Features.size()) {
       SubtargetFeatures Features;
       Features.setCPU(TargetOpts.CPU);
-      for (std::vector<std::string>::iterator
+      for (std::vector<std::string>::const_iterator
              it = TargetOpts.Features.begin(),
              ie = TargetOpts.Features.end(); it != ie; ++it)
         Features.AddFeature(*it);
@@ -336,7 +338,7 @@ void BackendConsumer::CreatePasses() {
   llvm::createStandardModulePasses(PM, OptLevel, CodeGenOpts.OptimizeSize,
                                    CodeGenOpts.UnitAtATime,
                                    CodeGenOpts.UnrollLoops,
-                                   CodeGenOpts.SimplifyLibCalls,
+                                   /*SimplifyLibCalls=*/!LangOpts.NoBuiltin,
                                    /*HaveExceptions=*/true,
                                    InliningPass);
 }

clang/tools/clang-cc/Options.cpp

@@ -814,7 +814,6 @@ void clang::InitializeCodeGenOptions(CodeGenOptions &Opts,
   Opts.NoCommon = NoCommon;
   Opts.NoImplicitFloat = NoImplicitFloat;
   Opts.OptimizeSize = OptSize;
-  Opts.SimplifyLibCalls = 1;
   Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !OptSize);
 
   // LLVM Code Generator options.
@@ -829,8 +828,6 @@ void clang::InitializeCodeGenOptions(CodeGenOptions &Opts,
   Opts.RelocationModel = MRelocationModel;
 
   // FIXME: Eliminate this dependency?
-  if (Lang.NoBuiltin)
-    Opts.SimplifyLibCalls = 0;
   if (Lang.CPlusPlus)
     Opts.NoCommon = 1;
   Opts.TimePasses = TimePasses;