+//===---------------------------------------------------------------------===//
+// Default code generation passes.
+//
+// Native code generation for a specified target.
+//===---------------------------------------------------------------------===//
+
+class ConstructMachineCodeForFunction : public FunctionPass {
+ TargetMachine &Target;
+public:
+ inline ConstructMachineCodeForFunction(TargetMachine &T) : Target(T) {}
+
+ const char *getPassName() const {
+ return "ConstructMachineCodeForFunction";
+ }
+
+ bool runOnFunction(Function &F) {
+ MachineCodeForMethod::construct(&F, Target);
+ return false;
+ }
+};
+
+struct FreeMachineCodeForFunction : public FunctionPass {
+ const char *getPassName() const { return "FreeMachineCodeForFunction"; }
+
+ static void freeMachineCode(Instruction &I) {
+ MachineCodeForInstruction::destroy(&I);
+ }
+
+ bool runOnFunction(Function &F) {
+ for (Function::iterator FI = F.begin(), FE = F.end(); FI != FE; ++FI)
+ for (BasicBlock::iterator I = FI->begin(), E = FI->end(); I != E; ++I)
+ MachineCodeForInstruction::get(I).dropAllReferences();
+
+ for (Function::iterator FI = F.begin(), FE = F.end(); FI != FE; ++FI)
+ for_each(FI->begin(), FI->end(), freeMachineCode);
+
+ return false;
+ }
+};
+
+// addPassesToEmitAssembly - This method controls the entire code generation
+// process for the ultra sparc.
+//
+void
+TargetMachine::addPassesToEmitAssembly(PassManager &PM, std::ostream &Out)
+{
+ // Construct and initialize the MachineCodeForMethod object for this fn.
+ PM.add(new ConstructMachineCodeForFunction(*this));
+
+ // Specialize LLVM code for this target machine and then
+ // run basic dataflow optimizations on LLVM code.
+ if (!DisablePreSelect)
+ {
+ PM.add(createPreSelectionPass(*this));
+ PM.add(createReassociatePass());
+ PM.add(createGCSEPass());
+ PM.add(createLICMPass());
+ }
+
+ PM.add(createInstructionSelectionPass(*this));
+
+ if (!DisableSched)
+ PM.add(createInstructionSchedulingWithSSAPass(*this));
+
+ PM.add(getRegisterAllocator(*this));
+
+ PM.add(getPrologEpilogInsertionPass());
+
+ if (!DisablePeephole)
+ PM.add(createPeepholeOptsPass(*this));
+
+ PM.add(MappingInfoForFunction(Out));
+
+ // Output assembly language to the .s file. Assembly emission is split into
+ // two parts: Function output and Global value output. This is because
+ // function output is pipelined with all of the rest of code generation stuff,
+ // allowing machine code representations for functions to be free'd after the
+ // function has been emitted.
+ //
+ PM.add(getFunctionAsmPrinterPass(Out));
+ PM.add(new FreeMachineCodeForFunction()); // Free stuff no longer needed
+
+ // Emit Module level assembly after all of the functions have been processed.
+ PM.add(getModuleAsmPrinterPass(Out));
+
+ // Emit bytecode to the assembly file into its special section next
+ PM.add(getEmitBytecodeToAsmPass(Out));
+ PM.add(getFunctionInfo(Out));
+}
+
+