Completely rearchitect the interface between targets and the pass manager.

This pass:

1. Splits TargetMachine into TargetMachine (generic targets, can be implemented
any way, like the CBE) and LLVMTargetMachine (subclass of TM that is used by
things using libcodegen and other support).
2. Instead of having each target fully populate the passmgr for file or JIT
   output, move all this to common code, and give targets hooks they can
   implement.
3. Commonalize the target population stuff between file emission and JIT
   emission.
4. All (native code) codegen stuff now happens in a FunctionPassManager, which
   paves the way for "fast -O0" stuff in the CFE later, and now LLC could
   lazily stream .bc files from disk to use less memory.
5. There are now many fewer #includes and the targets don't depend on the
   scalar xforms or libanalysis anymore (but codegen does).
6. Changing common code generator pass ordering stuff no longer requires
   touching all targets.
7. The JIT now has the option of "-fast" codegen or normal optimized codegen,
   which is now orthogonal to the fact that JIT'ing is being done.

llvm-svn: 30081

1 files changed, 29 insertions, 90 deletions

diff --git a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
index 811e18992da..2e2fd285879 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -12,19 +12,10 @@
 //===----------------------------------------------------------------------===//
 
 #include "PPC.h"
-#include "PPCFrameInfo.h"
 #include "PPCTargetMachine.h"
-#include "PPCJITInfo.h"
 #include "llvm/Module.h"
 #include "llvm/PassManager.h"
-#include "llvm/Analysis/Verifier.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/Passes.h"
-#include "llvm/Target/TargetOptions.h"
 #include "llvm/Target/TargetMachineRegistry.h"
-#include "llvm/Transforms/Scalar.h"
-#include "llvm/Support/CommandLine.h"
-#include <iostream>
 using namespace llvm;
 
 namespace {
@@ -106,99 +97,47 @@ PPC64TargetMachine::PPC64TargetMachine(const Module &M, const std::string &FS)
   : PPCTargetMachine(M, FS, true) {
 }
 
-/// addPassesToEmitFile - Add passes to the specified pass manager to implement
-/// a static compiler for this target.
-///
-bool PPCTargetMachine::addPassesToEmitFile(PassManager &PM, std::ostream &Out,
-                                           CodeGenFileType FileType,
-                                           bool Fast) {
-  if (FileType != TargetMachine::AssemblyFile &&
-      FileType != TargetMachine::ObjectFile) return true;
-  
-  // Run loop strength reduction before anything else.
-  if (!Fast) PM.add(createLoopStrengthReducePass(&TLInfo));
-
-  // FIXME: Implement efficient support for garbage collection intrinsics.
-  PM.add(createLowerGCPass());
 
-  // FIXME: Implement the invoke/unwind instructions!
-  PM.add(createLowerInvokePass());
-  
-  // Clean up after other passes, e.g. merging critical edges.
-  if (!Fast) PM.add(createCFGSimplificationPass());
-
-  // Make sure that no unreachable blocks are instruction selected.
-  PM.add(createUnreachableBlockEliminationPass());
+//===----------------------------------------------------------------------===//
+// Pass Pipeline Configuration
+//===----------------------------------------------------------------------===//
 
+bool PPCTargetMachine::addInstSelector(FunctionPassManager &PM, bool Fast) {
   // Install an instruction selector.
   PM.add(createPPCISelDag(*this));
+  return false;
+}
 
-  if (PrintMachineCode)
-    PM.add(createMachineFunctionPrinterPass(&std::cerr));
-
-  PM.add(createRegisterAllocator());
-
-  if (PrintMachineCode)
-    PM.add(createMachineFunctionPrinterPass(&std::cerr));
-
-  PM.add(createPrologEpilogCodeInserter());
-
-  // Must run branch selection immediately preceding the asm printer
+bool PPCTargetMachine::addPreEmitPass(FunctionPassManager &PM, bool Fast) {
+  
+  // Must run branch selection immediately preceding the asm printer.
   PM.add(createPPCBranchSelectionPass());
-
-  if (FileType == TargetMachine::AssemblyFile)
-    PM.add(createDarwinAsmPrinter(Out, *this));
-  else
-    // FIXME: support PPC ELF files at some point
-    addPPCMachOObjectWriterPass(PM, Out, *this);
-
-  PM.add(createMachineCodeDeleter());
   return false;
 }
 
-void PPCJITInfo::addPassesToJITCompile(FunctionPassManager &PM) {
-  // The JIT should use the static relocation model.
-  TM.setRelocationModel(Reloc::Static);
-
-  // Run loop strength reduction before anything else.
-  PM.add(createLoopStrengthReducePass(TM.getTargetLowering()));
-
-  // FIXME: Implement efficient support for garbage collection intrinsics.
-  PM.add(createLowerGCPass());
-
-  // FIXME: Implement the invoke/unwind instructions!
-  PM.add(createLowerInvokePass());
-
-  // Clean up after other passes, e.g. merging critical edges.
-  PM.add(createCFGSimplificationPass());
-
-  // Make sure that no unreachable blocks are instruction selected.
-  PM.add(createUnreachableBlockEliminationPass());
-
-  // Install an instruction selector.
-  PM.add(createPPCISelDag(TM));
-
-  PM.add(createRegisterAllocator());
-  PM.add(createPrologEpilogCodeInserter());
-
-  // Must run branch selection immediately preceding the asm printer
-  PM.add(createPPCBranchSelectionPass());
+bool PPCTargetMachine::addAssemblyEmitter(FunctionPassManager &PM, bool Fast, 
+                                          std::ostream &Out) {
+  PM.add(createDarwinAsmPrinter(Out, *this));
+  return false;
+}
 
-  if (PrintMachineCode)
-    PM.add(createMachineFunctionPrinterPass(&std::cerr));
+bool PPCTargetMachine::addObjectWriter(FunctionPassManager &PM, bool Fast,
+                                       std::ostream &Out) {
+  // FIXME: support PPC ELF files at some point
+  addPPCMachOObjectWriterPass(PM, Out, *this);
+  return true;
 }
 
-/// addPassesToEmitMachineCode - Add passes to the specified pass manager to get
-/// machine code emitted.  This uses a MachineCodeEmitter object to handle
-/// actually outputting the machine code and resolving things like the address
-/// of functions.  This method should returns true if machine code emission is
-/// not supported.
-///
-bool PPCTargetMachine::addPassesToEmitMachineCode(FunctionPassManager &PM,
-                                                  MachineCodeEmitter &MCE) {
-  // Machine code emitter pass for PowerPC
+bool PPCTargetMachine::addCodeEmitter(FunctionPassManager &PM, bool Fast,
+                                      MachineCodeEmitter &MCE) {
+  // The JIT should use the static relocation model.
+  // FIXME: This should be moved to TargetJITInfo!!
+  setRelocationModel(Reloc::Static);
+
+  
+  
+  // Machine code emitter pass for PowerPC.
   PM.add(createPPCCodeEmitterPass(*this, MCE));
-  // Delete machine code for this function after emitting it
-  PM.add(createMachineCodeDeleter());
   return false;
 }
+