-//===-- TargetMachine.cpp - General Target Information ---------------------==//
+//===-- TargetInstrInfo.cpp - Target Instruction 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 MachineInstrInfo and MachineCacheInfo.
//
//===----------------------------------------------------------------------===//
-#include "llvm/Target/MachineInstrInfo.h"
+#include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/Constant.h"
#include "llvm/DerivedTypes.h"
-//---------------------------------------------------------------------------
-// class MachineInstructionInfo
-// Interface to description of machine instructions
-//---------------------------------------------------------------------------
+namespace llvm {
+// External object describing the machine instructions
+// Initialized only when the TargetMachine class is created
+// and reset when that class is destroyed.
+//
+const TargetInstrDescriptor* TargetInstrDescriptors = 0;
-MachineInstrInfo::MachineInstrInfo(const MachineInstrDescriptor* Desc,
- unsigned DescSize,
- unsigned NumRealOpCodes)
- : desc(Desc), descSize(DescSize), numRealOpCodes(NumRealOpCodes) {
+TargetInstrInfo::TargetInstrInfo(const TargetInstrDescriptor* Desc,
+ unsigned numOpcodes)
+ : desc(Desc), NumOpcodes(numOpcodes) {
// FIXME: TargetInstrDescriptors should not be global
- assert(TargetInstrDescriptors == NULL && desc != NULL);
+ assert(TargetInstrDescriptors == NULL && desc != NULL
+ && "TargetMachine data structure corrupt; maybe you tried to create another TargetMachine? (only one may exist in a program)");
TargetInstrDescriptors = desc; // initialize global variable
}
-MachineInstrInfo::~MachineInstrInfo() {
+TargetInstrInfo::~TargetInstrInfo() {
TargetInstrDescriptors = NULL; // reset global variable
}
-
-bool MachineInstrInfo::constantFitsInImmedField(MachineOpCode opCode,
- int64_t intValue) const {
+bool TargetInstrInfo::constantFitsInImmedField(MachineOpCode opCode,
+ int64_t intValue) const {
// First, check if opCode has an immed field.
bool isSignExtended;
uint64_t maxImmedValue = maxImmedConstant(opCode, isSignExtended);
return false;
}
-bool MachineInstrInfo::ConstantTypeMustBeLoaded(const Constant* CV) const {
+bool TargetInstrInfo::ConstantTypeMustBeLoaded(const Constant* CV) const {
assert(CV->getType()->isPrimitiveType() || isa<PointerType>(CV->getType()));
return !(CV->getType()->isIntegral() || isa<PointerType>(CV->getType()));
}
+
+} // End llvm namespace