Added LLVM project notice to the top of every C++ source file.

[oota-llvm.git] / lib / Target / TargetMachine.cpp

diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp
index 83bd2f3a3d8895b1a05a091217ec917e490865b0..b7c1b342e1263c1c3f5f8d5073279dba5c6a607c 100644 (file)
--- a/lib/Target/TargetMachine.cpp
+++ b/lib/Target/TargetMachine.cpp
@@ -1,12 +1,20 @@
 //===-- TargetMachine.cpp - General Target Information ---------------------==//
+// 
+//                     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 describes the general parts of a Target machine.
-// This file also implements the InstInfo interface as well...
+// This file also implements TargetCacheInfo.
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/Target/MachineInstrInfo.h"
-#include "llvm/DerivedTypes.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetCacheInfo.h"
+#include "llvm/Type.h"
 
 //---------------------------------------------------------------------------
 // class TargetMachine
@@ -19,69 +27,25 @@
 
 // function TargetMachine::findOptimalStorageSize 
 // 
-// Purpose:
-//   This default implementation assumes that all sub-word data items use
-//   space equal to optSizeForSubWordData, and all other primitive data
-//   items use space according to the type.
-//   
-unsigned int
-TargetMachine::findOptimalStorageSize(const Type* ty) const
-{
-  switch(ty->getPrimitiveID())
-    {
-    case Type::BoolTyID:
-    case Type::UByteTyID:
-    case Type::SByteTyID:     
-    case Type::UShortTyID:
-    case Type::ShortTyID:     
-      return optSizeForSubWordData;
-    
-    default:
-      return DataLayout.getTypeSize(ty);
-    }
+unsigned TargetMachine::findOptimalStorageSize(const Type *Ty) const {
+  // All integer types smaller than ints promote to 4 byte integers.
+  if (Ty->isIntegral() && Ty->getPrimitiveSize() < 4)
+    return 4;
+
+  return DataLayout.getTypeSize(Ty);
 }
 
 
 //---------------------------------------------------------------------------
-// class MachineInstructionInfo
-//     Interface to description of machine instructions
+// class TargetCacheInfo 
+// 
+// Purpose:
+//   Describes properties of the target cache architecture.
 //---------------------------------------------------------------------------
 
-
-/*ctor*/
-MachineInstrInfo::MachineInstrInfo(const TargetMachine& tgt,
-                                   const MachineInstrDescriptor* _desc,
-                                  unsigned int _descSize,
-                                  unsigned int _numRealOpCodes)
-  : target(tgt),
-    desc(_desc), descSize(_descSize), numRealOpCodes(_numRealOpCodes)
-{
-  // FIXME: TargetInstrDescriptors should not be global
-  assert(TargetInstrDescriptors == NULL && desc != NULL);
-  TargetInstrDescriptors = desc;       // initialize global variable
-}  
-
-
-MachineInstrInfo::~MachineInstrInfo()
-{
-  TargetInstrDescriptors = NULL;       // reset global variable
-}
-
-
-bool
-MachineInstrInfo::constantFitsInImmedField(MachineOpCode opCode,
-                                          int64_t intValue) const
-{
-  // First, check if opCode has an immed field.
-  bool isSignExtended;
-  uint64_t maxImmedValue = maxImmedConstant(opCode, isSignExtended);
-  if (maxImmedValue != 0)
-    {
-      // Now check if the constant fits
-      if (intValue <= (int64_t) maxImmedValue &&
-         intValue >= -((int64_t) maxImmedValue+1))
-       return true;
-    }
-  
-  return false;
+void TargetCacheInfo::Initialize() {
+  numLevels = 2;
+  cacheLineSizes.push_back(16);  cacheLineSizes.push_back(32); 
+  cacheSizes.push_back(1 << 15); cacheSizes.push_back(1 << 20);
+  cacheAssoc.push_back(1);       cacheAssoc.push_back(4);
 }