change FnStubs from being a StringMap<std::string> to being a much

more efficient SmallPtrSet<MCSymbol*>.  This eliminates string
craziness and fixes CodeGen/X86/darwin-quote.ll with the new asmprinter.

Codegen is producing stubs in a nondeterminstic order, but it was doing
this before anyway.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81511 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 34 insertions, 17 deletions

diff --git a/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp b/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
index 445cc13ec2..00ae058b61 100644
--- a/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
+++ b/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
@@ -24,8 +24,10 @@
 #include "llvm/Module.h"
 #include "llvm/Type.h"
 #include "llvm/Assembly/Writer.h"
-#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCSectionMachO.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCSymbol.h"
 #include "llvm/CodeGen/MachineJumpTableInfo.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ErrorHandling.h"
@@ -320,8 +322,9 @@ void X86ATTAsmPrinter::printSymbolOperand(const MachineOperand &MO) {
       GVStubs[Name] = Mang->getMangledName(GV);
     else if (MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE)
       HiddenGVStubs[Name] = Mang->getMangledName(GV);
-    else if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB)
-      FnStubs[Name] = Mang->getMangledName(GV);
+    else if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) {
+      FnStubs.insert(OutContext.GetOrCreateSymbol(Name));
+    }
     
     // If the name begins with a dollar-sign, enclose it in parens.  We do this
     // to avoid having it look like an integer immediate to the assembler.
@@ -336,8 +339,8 @@ void X86ATTAsmPrinter::printSymbolOperand(const MachineOperand &MO) {
   case MachineOperand::MO_ExternalSymbol: {
     std::string Name = Mang->makeNameProper(MO.getSymbolName());
     if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) {
-      FnStubs[Name+"$stub"] = Name;
       Name += "$stub";
+      FnStubs.insert(OutContext.GetOrCreateSymbol(Name));
     }
     
     // If the name begins with a dollar-sign, enclose it in parens.  We do this
@@ -881,10 +884,20 @@ bool X86ATTAsmPrinter::doFinalization(Module &M) {
                                   MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
                                   5, SectionKind::getMetadata());
       OutStreamer.SwitchSection(TheSection);
-      for (StringMap<std::string>::iterator I = FnStubs.begin(),
-           E = FnStubs.end(); I != E; ++I)
-        O << I->getKeyData() << ":\n" << "\t.indirect_symbol " << I->second
-          << "\n\thlt ; hlt ; hlt ; hlt ; hlt\n";
+      // FIXME: This iteration order is unstable!!
+      for (SmallPtrSet<MCSymbol*, 16>::iterator I = FnStubs.begin(),
+           E = FnStubs.end(); I != E; ++I) {
+        MCSymbol *Sym = *I;
+        Sym->print(O, MAI);
+        
+        O << ":\n" << "\t.indirect_symbol ";
+
+        // Get the MCSymbol without the $stub suffix.
+        Sym = OutContext.GetOrCreateSymbol(StringRef(Sym->getName()).substr(0,
+                                                     Sym->getName().size()-5));
+        Sym->print(O, MAI);
+        O << "\n\thlt ; hlt ; hlt ; hlt ; hlt\n";
+      }
       O << '\n';
     }
 
diff --git a/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h b/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h
index 0dd35a7aa3..2146270afd 100644
--- a/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h
+++ b/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h
@@ -216,7 +216,8 @@ class VISIBILITY_HIDDEN X86ATTAsmPrinter : public AsmPrinter {
   void emitFunctionHeader(const MachineFunction &MF);
 
   // Necessary for Darwin to print out the apprioriate types of linker stubs
-  StringMap<std::string> FnStubs, GVStubs, HiddenGVStubs;
+  StringMap<std::string> GVStubs, HiddenGVStubs;
+  SmallPtrSet<MCSymbol*, 16> FnStubs;  // Darwin $stub stubs.
 
   // Necessary for dllexport support
   StringSet<> CygMingStubs, DLLExportedFns, DLLExportedGVs;
diff --git a/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp b/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp
index 1cccfa95aa..2aced087d0 100644
--- a/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp
+++ b/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp
@@ -78,10 +78,12 @@ MCSymbol *X86ATTAsmPrinter::GetGlobalAddressSymbol(const MachineOperand &MO) {
     Name += "$non_lazy_ptr";
     HiddenGVStubs[Name.str()] = StringRef(Name.data(), Name.size()-13);
     break;
-  case X86II::MO_DARWIN_STUB:
+  case X86II::MO_DARWIN_STUB: {
     Name += "$stub";
-    FnStubs[Name.str()] = StringRef(Name.data(), Name.size()-5);
-    break;
+    MCSymbol *Sym = OutContext.GetOrCreateSymbol(Name.str());
+    FnStubs.insert(Sym);
+    return Sym;
+  }
   // FIXME: These probably should be a modifier on the symbol or something??
   case X86II::MO_TLSGD:     Name += "@TLSGD";     break;
   case X86II::MO_GOTTPOFF:  Name += "@GOTTPOFF";  break;
@@ -114,12 +116,13 @@ MCSymbol *X86ATTAsmPrinter::GetExternalSymbolSymbol(const MachineOperand &MO) {
     Name.insert(Name.begin(), Prefix, Prefix+strlen(Prefix));
     break;
   }
-  case X86II::MO_DARWIN_STUB:
-    // Insert: FnStub["_foo$stub"] = "_foo";
+  case X86II::MO_DARWIN_STUB: {
     Name += "$stub";
-    FnStubs[Name.str()] = StringRef(Name.data(), Name.size()-5);
-    break;
-    // FIXME: These probably should be a modifier on the symbol or something??
+    MCSymbol *Sym = OutContext.GetOrCreateSymbol(Name.str());
+    FnStubs.insert(Sym);
+    return Sym;
+  }
+  // FIXME: These probably should be a modifier on the symbol or something??
   case X86II::MO_TLSGD:     Name += "@TLSGD";     break;
   case X86II::MO_GOTTPOFF:  Name += "@GOTTPOFF";  break;
   case X86II::MO_INDNTPOFF: Name += "@INDNTPOFF"; break;