Move actual section printing stuff to AsmPrinter from TAI reducing heap traffic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56573 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp b/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
index 4db430f..08f0597 100644
--- a/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
+++ b/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
@@ -846,7 +846,6 @@
     return;
   }
 
-  std::string SectionName = TAI->SectionForGlobal(GVar);
   std::string name = Mang->getValueName(GVar);
   Constant *C = GVar->getInitializer();
   const Type *Type = C->getType();
@@ -858,7 +857,7 @@
   if (Subtarget->isTargetELF())
     O << "\t.type " << name << ",%object\n";
 
-  SwitchToDataSection(SectionName.c_str());
+  SwitchToSection(TAI->SectionForGlobal(GVar));
 
   if (C->isNullValue() && !GVar->hasSection() && !GVar->isThreadLocal()) {
     // FIXME: This seems to be pretty darwin-specific
diff --git a/lib/Target/Alpha/AlphaAsmPrinter.cpp b/lib/Target/Alpha/AlphaAsmPrinter.cpp
index b1265af..9a4102c 100644
--- a/lib/Target/Alpha/AlphaAsmPrinter.cpp
+++ b/lib/Target/Alpha/AlphaAsmPrinter.cpp
@@ -149,7 +149,7 @@
 
   // Print out labels for the function.
   const Function *F = MF.getFunction();
-  SwitchToTextSection(TAI->SectionForGlobal(F).c_str(), F);
+  SwitchToSection(TAI->SectionForGlobal(F));
 
   EmitAlignment(4, F);
   switch (F->getLinkage()) {
@@ -214,14 +214,13 @@
   if (EmitSpecialLLVMGlobal(GVar))
     return;
 
-  std::string SectionName = TAI->SectionForGlobal(GVar);
   std::string name = Mang->getValueName(GVar);
   Constant *C = GVar->getInitializer();
   unsigned Size = TD->getABITypeSize(C->getType());
   unsigned Align = TD->getPreferredAlignmentLog(GVar);
 
   // 0: Switch to section
-  SwitchToDataSection(SectionName.c_str());
+  SwitchToSection(TAI->SectionForGlobal(GVar));
 
   // 1: Check visibility
   printVisibility(name, GVar->getVisibility());
diff --git a/lib/Target/CellSPU/SPUAsmPrinter.cpp b/lib/Target/CellSPU/SPUAsmPrinter.cpp
index ef33968..5b0bacf 100644
--- a/lib/Target/CellSPU/SPUAsmPrinter.cpp
+++ b/lib/Target/CellSPU/SPUAsmPrinter.cpp
@@ -418,7 +418,7 @@
   // Print out labels for the function.
   const Function *F = MF.getFunction();
 
-  SwitchToTextSection(TAI->SectionForGlobal(F).c_str(), F);
+  SwitchToSection(TAI->SectionForGlobal(F));
   EmitAlignment(3, F);
 
   switch (F->getLinkage()) {
diff --git a/lib/Target/IA64/IA64AsmPrinter.cpp b/lib/Target/IA64/IA64AsmPrinter.cpp
index ff33125..0d04bf5 100644
--- a/lib/Target/IA64/IA64AsmPrinter.cpp
+++ b/lib/Target/IA64/IA64AsmPrinter.cpp
@@ -130,7 +130,7 @@
   EmitConstantPool(MF.getConstantPool());
 
   const Function *F = MF.getFunction();
-  SwitchToTextSection(TAI->SectionForGlobal(F).c_str(), F);
+  SwitchToSection(TAI->SectionForGlobal(F));
 
   // Print out labels for the function.
   EmitAlignment(5);
@@ -264,7 +264,6 @@
     return;
 
   O << "\n\n";
-  std::string SectionName = TAI->SectionForGlobal(GVar);
   std::string name = Mang->getValueName(GVar);
   Constant *C = GVar->getInitializer();
   unsigned Size = TD->getABITypeSize(C->getType());
@@ -272,7 +271,7 @@
 
   printVisibility(name, GVar->getVisibility());
 
-  SwitchToDataSection(SectionName.c_str());
+  SwitchToSection(TAI->SectionForGlobal(GVar));
 
   if (C->isNullValue() && !GVar->hasSection()) {
     if (!GVar->isThreadLocal() &&
diff --git a/lib/Target/Mips/MipsAsmPrinter.cpp b/lib/Target/Mips/MipsAsmPrinter.cpp
index fbe3faa..9525f46 100644
--- a/lib/Target/Mips/MipsAsmPrinter.cpp
+++ b/lib/Target/Mips/MipsAsmPrinter.cpp
@@ -224,7 +224,7 @@
 {
   // Print out the label for the function.
   const Function *F = MF.getFunction();
-  SwitchToTextSection(TAI->SectionForGlobal(F).c_str());
+  SwitchToSection(TAI->SectionForGlobal(F));
 
   // 2 bits aligned
   EmitAlignment(2, F);
@@ -479,7 +479,6 @@
     return;
 
   O << "\n\n";
-  std::string SectionName = TAI->SectionForGlobal(GVar);
   std::string name = Mang->getValueName(GVar);
   Constant *C = GVar->getInitializer();
   const Type *CTy = C->getType();
@@ -501,7 +500,7 @@
 
   printVisibility(name, GVar->getVisibility());
 
-  SwitchToDataSection(SectionName.c_str());
+  SwitchToSection(TAI->SectionForGlobal(GVar));
 
   if (C->isNullValue() && !GVar->hasSection()) {
     if (!GVar->isThreadLocal() &&
diff --git a/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp b/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
index a8127f6..2d9ecbd 100644
--- a/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
@@ -571,7 +571,7 @@
 
   // Print out labels for the function.
   const Function *F = MF.getFunction();
-  SwitchToTextSection(TAI->SectionForGlobal(F).c_str(), F);
+  SwitchToSection(TAI->SectionForGlobal(F));
 
   switch (F->getLinkage()) {
   default: assert(0 && "Unknown linkage type!");
@@ -662,7 +662,6 @@
     return;
 
   std::string name = Mang->getValueName(GVar);
-  std::string SectionName = TAI->SectionForGlobal(GVar);
 
   printVisibility(name, GVar->getVisibility());
 
@@ -671,7 +670,7 @@
   unsigned Size = TD->getABITypeSize(Type);
   unsigned Align = TD->getPreferredAlignmentLog(GVar);
 
-  SwitchToDataSection(SectionName.c_str());
+  SwitchToSection(TAI->SectionForGlobal(GVar));
 
   if (C->isNullValue() && /* FIXME: Verify correct */
       !GVar->hasSection() &&
@@ -759,7 +758,7 @@
 
   // Print out labels for the function.
   const Function *F = MF.getFunction();
-  SwitchToTextSection(TAI->SectionForGlobal(F).c_str(), F);
+  SwitchToSection(TAI->SectionForGlobal(F));
 
   switch (F->getLinkage()) {
   default: assert(0 && "Unknown linkage type!");
@@ -888,7 +887,6 @@
   }
 
   std::string name = Mang->getValueName(GVar);
-  std::string SectionName = TAI->SectionForGlobal(GVar);
 
   printVisibility(name, GVar->getVisibility());
 
@@ -897,7 +895,7 @@
   unsigned Size = TD->getABITypeSize(Type);
   unsigned Align = TD->getPreferredAlignmentLog(GVar);
 
-  SwitchToDataSection(SectionName.c_str());
+  SwitchToSection(TAI->SectionForGlobal(GVar));
 
   if (C->isNullValue() && /* FIXME: Verify correct */
       !GVar->hasSection() &&
diff --git a/lib/Target/Sparc/SparcAsmPrinter.cpp b/lib/Target/Sparc/SparcAsmPrinter.cpp
index bb4d6ae..424adaa 100644
--- a/lib/Target/Sparc/SparcAsmPrinter.cpp
+++ b/lib/Target/Sparc/SparcAsmPrinter.cpp
@@ -99,7 +99,7 @@
 
   // Print out the label for the function.
   const Function *F = MF.getFunction();
-  SwitchToTextSection(TAI->SectionForGlobal(F).c_str(), F);
+  SwitchToSection(TAI->SectionForGlobal(F));
   EmitAlignment(4, F);
   O << "\t.globl\t" << CurrentFnName << '\n';
 
@@ -242,7 +242,6 @@
     return;
 
   O << "\n\n";
-  std::string SectionName = TAI->SectionForGlobal(GVar);
   std::string name = Mang->getValueName(GVar);
   Constant *C = GVar->getInitializer();
   unsigned Size = TD->getABITypeSize(C->getType());
@@ -250,7 +249,7 @@
 
   printVisibility(name, GVar->getVisibility());
 
-  SwitchToDataSection(SectionName.c_str());
+  SwitchToSection(TAI->SectionForGlobal(GVar));
 
   if (C->isNullValue() && !GVar->hasSection()) {
     if (!GVar->isThreadLocal() &&
diff --git a/lib/Target/TargetAsmInfo.cpp b/lib/Target/TargetAsmInfo.cpp
index 06b77dd..536f16d 100644
--- a/lib/Target/TargetAsmInfo.cpp
+++ b/lib/Target/TargetAsmInfo.cpp
@@ -272,7 +272,7 @@
   return Flags;
 }
 
-std::string
+const Section*
 TargetAsmInfo::SectionForGlobal(const GlobalValue *GV) const {
   const Section* S;
   // Select section name
@@ -286,13 +286,7 @@
     S = SelectSectionForGlobal(GV);
   }
 
-  if (!S->isNamed())
-    return S->Name;
-
-  // If section is named we need to switch into it via special '.section'
-  // directive and also append funky flags. Otherwise - section name is just
-  // some magic assembler directive.
-  return getSwitchToSectionDirective() + S->Name + getSectionFlags(S->Flags);
+  return S;
 }
 
 // Lame default implementation. Calculate the section name for global.
diff --git a/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp b/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
index 61c8f12..01fda9f 100644
--- a/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
+++ b/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
@@ -148,11 +148,10 @@
 
 void X86ATTAsmPrinter::emitFunctionHeader(const MachineFunction &MF) {
   const Function *F = MF.getFunction();
-  std::string SectionName = TAI->SectionForGlobal(F);
 
   decorateName(CurrentFnName, F);
 
-  SwitchToTextSection(SectionName.c_str());
+  SwitchToSection(TAI->SectionForGlobal(F));
 
   unsigned FnAlign = OptimizeForSize ? 1 : 4;
   if (!F->isDeclaration() && F->hasNote(FnAttr::OptimizeForSize))
@@ -766,7 +765,6 @@
     return;
   }
 
-  std::string SectionName = TAI->SectionForGlobal(GVar);
   std::string name = Mang->getValueName(GVar);
   Constant *C = GVar->getInitializer();
   const Type *Type = C->getType();
@@ -778,7 +776,7 @@
   if (Subtarget->isTargetELF())
     O << "\t.type\t" << name << ",@object\n";
 
-  SwitchToDataSection(SectionName.c_str());
+  SwitchToSection(TAI->SectionForGlobal(GVar));
 
   if (C->isNullValue() && !GVar->hasSection()) {
     // FIXME: This seems to be pretty darwin-specific