//===-- TargetMachine.cpp - General Target Information ---------------------==//
//
// This file describes the general parts of a Target machine.
-// This file also implements the InstInfo interface as well...
+// This file also implements MachineCacheInfo.
//
//===----------------------------------------------------------------------===//
-#include "llvm/Target/MachineInstrInfo.h"
-#include "llvm/DerivedTypes.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/MachineCacheInfo.h"
+#include "llvm/Type.h"
//---------------------------------------------------------------------------
// class TargetMachine
// 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 {
+ // Round integral values smaller than SubWordDataSize up to SubWordDataSize
+ if (Ty->isIntegral() &&
+ Ty->getPrimitiveSize() < DataLayout.getSubWordDataSize())
+ return DataLayout.getSubWordDataSize();
+
+ return DataLayout.getTypeSize(Ty);
}
//---------------------------------------------------------------------------
-// class MachineInstructionInfo
-// Interface to description of machine instructions
+// class MachineCacheInfo
+//
+// Purpose:
+// Describes properties of the target cache architecture.
//---------------------------------------------------------------------------
-
-/*ctor*/
-MachineInstrInfo::MachineInstrInfo(const MachineInstrDescriptor* _desc,
- unsigned int _descSize,
- unsigned int _numRealOpCodes)
- : 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 MachineCacheInfo::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);
}