From 1ecf0eedc4c1c453946fa9812a24392117b1e05e Mon Sep 17 00:00:00 2001
From: Anton Korobeynikov <asl@math.spbu.ru>
Date: Sat, 28 Jun 2008 11:09:01 +0000
Subject: [PATCH] Factor out stuff into helper function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52862 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86ATTAsmPrinter.cpp | 70 +++++++++++++++--------------
 lib/Target/X86/X86ATTAsmPrinter.h   |  2 +
 2 files changed, 39 insertions(+), 33 deletions(-)

diff --git a/lib/Target/X86/X86ATTAsmPrinter.cpp b/lib/Target/X86/X86ATTAsmPrinter.cpp
index 602fa51e3ae..5b3e420a8fd 100644
--- a/lib/Target/X86/X86ATTAsmPrinter.cpp
+++ b/lib/Target/X86/X86ATTAsmPrinter.cpp
@@ -167,31 +167,8 @@ std::string X86ATTAsmPrinter::getSectionForFunction(const Function &F) const {
   }
 }
 
-/// runOnMachineFunction - This uses the printMachineInstruction()
-/// method to print assembly for each instruction.
-///
-bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
-  if (TAI->doesSupportDebugInformation()) {
-    // Let PassManager know we need debug information and relay
-    // the MachineModuleInfo address on to DwarfWriter.
-    MMI = &getAnalysis<MachineModuleInfo>();
-    DW.SetModuleInfo(MMI);
-  }
-
-  SetupMachineFunction(MF);
-  O << "\n\n";
-
-  // Print out constants referenced by the function
-  EmitConstantPool(MF.getConstantPool());
-
-  // Print out labels for the function.
+void X86ATTAsmPrinter::emitFunctionHeader(const MachineFunction &MF) {
   const Function *F = MF.getFunction();
-  unsigned CC = F->getCallingConv();
-
-  // Populate function information map.  Actually, We don't want to populate
-  // non-stdcall or non-fastcall functions' information right now.
-  if (CC == CallingConv::X86_StdCall || CC == CallingConv::X86_FastCall)
-    FunctionInfoMap[F] = *MF.getInfo<X86MachineFunctionInfo>();
 
   decorateName(CurrentFnName, F);
 
@@ -204,8 +181,6 @@ bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
     EmitAlignment(FnAlign, F);
     break;
   case Function::DLLExportLinkage:
-    DLLExportedFns.insert(Mang->makeNameProper(F->getName(), ""));
-    //FALLS THROUGH
   case Function::ExternalLinkage:
     EmitAlignment(FnAlign, F);
     O << "\t.globl\t" << CurrentFnName << "\n";
@@ -248,13 +223,43 @@ bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
       (F->getLinkage() == Function::LinkOnceLinkage ||
        F->getLinkage() == Function::WeakLinkage))
     O << "Lllvm$workaround$fake$stub$" << CurrentFnName << ":\n";
+}
 
-  if (TAI->doesSupportDebugInformation() ||
-      TAI->doesSupportExceptionHandling()) {
-    // Emit pre-function debug and/or EH information.
-    DW.BeginFunction(&MF);
+/// runOnMachineFunction - This uses the printMachineInstruction()
+/// method to print assembly for each instruction.
+///
+bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
+  const Function *F = MF.getFunction();
+  unsigned CC = F->getCallingConv();
+
+  if (TAI->doesSupportDebugInformation()) {
+    // Let PassManager know we need debug information and relay
+    // the MachineModuleInfo address on to DwarfWriter.
+    MMI = &getAnalysis<MachineModuleInfo>();
+    DW.SetModuleInfo(MMI);
   }
 
+  SetupMachineFunction(MF);
+  O << "\n\n";
+
+  // Populate function information map.  Actually, We don't want to populate
+  // non-stdcall or non-fastcall functions' information right now.
+  if (CC == CallingConv::X86_StdCall || CC == CallingConv::X86_FastCall)
+    FunctionInfoMap[F] = *MF.getInfo<X86MachineFunctionInfo>();
+
+  // Print out constants referenced by the function
+  EmitConstantPool(MF.getConstantPool());
+
+  if (F->hasDLLExportLinkage())
+    DLLExportedFns.insert(Mang->makeNameProper(F->getName(), ""));
+
+  // Print the 'header' of function
+  emitFunctionHeader(MF);
+
+  // Emit pre-function debug and/or EH information.
+  if (TAI->doesSupportDebugInformation() || TAI->doesSupportExceptionHandling())
+    DW.BeginFunction(&MF);
+
   // Print out code for the function.
   bool hasAnyRealCode = false;
   for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
@@ -284,10 +289,9 @@ bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
   if (TAI->hasDotTypeDotSizeDirective())
     O << "\t.size\t" << CurrentFnName << ", .-" << CurrentFnName << "\n";
 
-  if (TAI->doesSupportDebugInformation()) {
-    // Emit post-function debug information.
+  // Emit post-function debug information.
+  if (TAI->doesSupportDebugInformation())
     DW.EndFunction();
-  }
 
   // Print out jump tables referenced by the function.
   EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
diff --git a/lib/Target/X86/X86ATTAsmPrinter.h b/lib/Target/X86/X86ATTAsmPrinter.h
index 2c80df41fcd..025a157ac26 100644
--- a/lib/Target/X86/X86ATTAsmPrinter.h
+++ b/lib/Target/X86/X86ATTAsmPrinter.h
@@ -124,6 +124,8 @@ struct VISIBILITY_HIDDEN X86ATTAsmPrinter : public AsmPrinter {
   /// specified function body into.
   virtual std::string getSectionForFunction(const Function &F) const;
 
+  void emitFunctionHeader(const MachineFunction &MF);
+
   // Necessary for Darwin to print out the apprioriate types of linker stubs
   StringSet<> FnStubs, GVStubs, LinkOnceStubs;