Preserve the register coallescer, and update live intervals more correctly by trigger...

[oota-llvm.git] / lib / CodeGen / AsmPrinter.cpp

diff --git a/lib/CodeGen/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter.cpp
index 3439460880755d36f769ae017da5f18701ed4efc..d225dbce9fed93002fde82f69d66916f81ac9d1a 100644 (file)
--- a/lib/CodeGen/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter.cpp
@@ -29,6 +29,7 @@
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetLowering.h"
 #include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include <cerrno>
 using namespace llvm;
@@ -39,7 +40,8 @@ AsmVerbose("asm-verbose", cl::Hidden, cl::desc("Add comments to directives."));
 char AsmPrinter::ID = 0;
 AsmPrinter::AsmPrinter(std::ostream &o, TargetMachine &tm,
                        const TargetAsmInfo *T)
-  : MachineFunctionPass((intptr_t)&ID), FunctionNumber(0), O(o), TM(tm), TAI(T),
+  : MachineFunctionPass((intptr_t)&ID), FunctionNumber(0), O(o),
+    TM(tm), TAI(T), TRI(tm.getRegisterInfo()),
     IsInTextSection(false)
 {}
 
@@ -190,14 +192,23 @@ bool AsmPrinter::doFinalization(Module &M) {
                                          E = CMM->begin(); I != E; )
     (*--I)->finishAssembly(O, *this, *TAI);
 
+  // If we don't have any trampolines, then we don't require stack memory
+  // to be executable. Some targets have a directive to declare this.
+  Function* InitTrampolineIntrinsic = M.getFunction("llvm.init.trampoline");
+  if (!InitTrampolineIntrinsic || InitTrampolineIntrinsic->use_empty())
+    if (TAI->getNonexecutableStackDirective())
+      O << TAI->getNonexecutableStackDirective() << "\n";
+
   delete Mang; Mang = 0;
   return false;
 }
 
 std::string AsmPrinter::getCurrentFunctionEHName(const MachineFunction *MF) {
   assert(MF && "No machine function?");
-  return Mang->makeNameProper(MF->getFunction()->getName() + ".eh",
-                              TAI->getGlobalPrefix());
+  std::string Name = MF->getFunction()->getName();
+  if (Name.empty())
+    Name = Mang->getValueName(MF->getFunction());
+  return Mang->makeNameProper(Name + ".eh", TAI->getGlobalPrefix());
 }
 
 void AsmPrinter::SetupMachineFunction(MachineFunction &MF) {
@@ -1294,6 +1305,13 @@ void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
   O << "\n\t" << TAI->getInlineAsmEnd() << "\n";
 }
 
+/// printImplicitDef - This method prints the specified machine instruction
+/// that is an implicit def.
+void AsmPrinter::printImplicitDef(const MachineInstr *MI) const {
+  O << "\t" << TAI->getCommentString() << " implicit-def: "
+    << TRI->getAsmName(MI->getOperand(0).getReg()) << "\n";
+}
+
 /// printLabel - This method prints a local label used by debug and
 /// exception handling tables.
 void AsmPrinter::printLabel(const MachineInstr *MI) const {
@@ -1417,3 +1435,10 @@ void AsmPrinter::printDataDirective(const Type *type) {
   }
 }
 
+void AsmPrinter::printSuffixedName(std::string &Name, const char* Suffix) {
+  if (Name[0]=='\"')
+    O << "\"" << TAI->getPrivateGlobalPrefix() << 
+         Name.substr(1, Name.length()-2) << Suffix << "\"";
+  else
+    O << TAI->getPrivateGlobalPrefix() << Name << Suffix;
+}