Remove the target hook TargetInstrInfo::BlockHasNoFallThrough in favor of

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

diff --git a/lib/CodeGen/Passes.cpp b/lib/CodeGen/Passes.cpp
index 12b021c3bd5237bcbaf28d363060f6a80a24eb9b..f67eb79be3e1c8828a2f4cc82328062075b49fed 100644 (file)
--- a/lib/CodeGen/Passes.cpp
+++ b/lib/CodeGen/Passes.cpp
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -12,74 +12,43 @@
 //
 //===---------------------------------------------------------------------===//
 
+#include "llvm/CodeGen/RegAllocRegistry.h"
 #include "llvm/CodeGen/Passes.h"
-#include "llvm/Pass.h"
-#include "llvm/Support/CommandLine.h"
-#include <iostream>
-using namespace llvm;
-
-namespace {
-  enum RegAllocName { simple, local, linearscan };
-
-  static cl::opt<RegAllocName>
-  RegAlloc(
-    "regalloc",
-    cl::desc("Register allocator to use: (default = linearscan)"),
-    cl::Prefix,
-    cl::values(
-       clEnumVal(simple,        "  simple register allocator"),
-       clEnumVal(local,         "  local register allocator"),
-       clEnumVal(linearscan,    "  linear scan register allocator"),
-       clEnumValEnd),
-    cl::init(linearscan));
-}
 
+using namespace llvm;
 
-RegisterRegAlloc *RegisterRegAlloc::List = NULL;
-
-/// Find - Finds a register allocator in registration list.
+//===---------------------------------------------------------------------===//
 ///
-RegisterRegAlloc::FunctionPassCtor RegisterRegAlloc::Find(const char *N) {
-  for (RegisterRegAlloc *RA = List; RA; RA = RA->Next) {
-    if (strcmp(N, RA->Name) == 0) return RA->Ctor;
-  }
-  return NULL;
-}
-
-
-#ifndef NDEBUG  
-void RegisterRegAlloc::print() {
-  for (RegisterRegAlloc *RA = List; RA; RA = RA->Next) {
-    std::cerr << "RegAlloc:" << RA->Name << "\n";
-  }
-}
-#endif
-
-
-static RegisterRegAlloc
-  simpleRegAlloc("simple", "  simple register allocator",
-                 createSimpleRegisterAllocator);
+/// RegisterRegAlloc class - Track the registration of register allocators.
+///
+//===---------------------------------------------------------------------===//
+MachinePassRegistry RegisterRegAlloc::Registry;
 
-static RegisterRegAlloc
-  localRegAlloc("local", "  local register allocator",
-                createLocalRegisterAllocator);
 
-static RegisterRegAlloc
-  linearscanRegAlloc("linearscan", "linear scan register allocator",
-                     createLinearScanRegisterAllocator);
+//===---------------------------------------------------------------------===//
+///
+/// RegAlloc command line options.
+///
+//===---------------------------------------------------------------------===//
+static cl::opt<RegisterRegAlloc::FunctionPassCtor, false,
+               RegisterPassParser<RegisterRegAlloc> >
+RegAlloc("regalloc",
+         cl::init(&createLinearScanRegisterAllocator),
+         cl::desc("Register allocator to use: (default = linearscan)")); 
 
 
+//===---------------------------------------------------------------------===//
+///
+/// createRegisterAllocator - choose the appropriate register allocator.
+///
+//===---------------------------------------------------------------------===//
 FunctionPass *llvm::createRegisterAllocator() {
-  const char *Names[] = {"simple", "local", "linearscan"};
-  const char *DefltName = "linearscan";
+  RegisterRegAlloc::FunctionPassCtor Ctor = RegisterRegAlloc::getDefault();
   
-  RegisterRegAlloc::FunctionPassCtor Ctor =
-                    RegisterRegAlloc::Find(Names[RegAlloc]);
-  if (!Ctor) Ctor = RegisterRegAlloc::Find(DefltName);
-
-  assert(Ctor && "No register allocator found");
+  if (!Ctor) {
+    Ctor = RegAlloc;
+    RegisterRegAlloc::setDefault(RegAlloc);
+  }
   
   return Ctor();
 }
-
-