Add support for the Switch instruction by running the lowerSwitch pass first

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

diff --git a/lib/Target/TargetInstrInfo.cpp b/lib/Target/TargetInstrInfo.cpp
index ca26718708e1fa08ddb4e418b767de637ba13d17..c329a81833dcf4209279ef1f8f8113216fcce384 100644 (file)
--- a/lib/Target/TargetInstrInfo.cpp
+++ b/lib/Target/TargetInstrInfo.cpp
@@ -1,37 +1,40 @@
-//===-- TargetMachine.cpp - General Target Information ---------------------==//
+//===-- TargetInstrInfo.cpp - Target Instruction Information --------------===//
 //
-// 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
-//---------------------------------------------------------------------------
+// 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 TargetMachine& tgt,
-                                   const MachineInstrDescriptor* Desc,
-                                  unsigned DescSize,
-                                  unsigned NumRealOpCodes)
-  : target(tgt), desc(Desc), descSize(DescSize), numRealOpCodes(NumRealOpCodes) {
+TargetInstrInfo::TargetInstrInfo(const TargetInstrDescriptor* Desc,
+                                unsigned DescSize,
+                                unsigned 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() {
+TargetInstrInfo::~TargetInstrInfo() {
   TargetInstrDescriptors = NULL;       // reset global variable
 }
 
+void TargetInstrInfo::print(const MachineInstr *MI, std::ostream &O,
+                           const TargetMachine &TM) const {
+  MI->print(O, TM);
+}
 
-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);
@@ -50,7 +53,7 @@ bool MachineInstrInfo::constantFitsInImmedField(MachineOpCode opCode,
   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()));
 }