-//===- XCoreInstrInfo.cpp - XCore Instruction Information -------*- C++ -*-===//
+//===-- XCoreInstrInfo.cpp - XCore Instruction Information ----------------===//
//
// The LLVM Compiler Infrastructure
//
//
//===----------------------------------------------------------------------===//
-#include "XCoreMachineFunctionInfo.h"
#include "XCoreInstrInfo.h"
#include "XCore.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineLocation.h"
-#include "XCoreGenInstrInfo.inc"
+#include "XCoreMachineFunctionInfo.h"
#include "llvm/ADT/STLExtras.h"
+#include "llvm/CodeGen/MachineConstantPool.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/MachineMemOperand.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/Function.h"
+#include "llvm/MC/MCContext.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/TargetRegistry.h"
+
+using namespace llvm;
+
+#define GET_INSTRINFO_CTOR_DTOR
+#include "XCoreGenInstrInfo.inc"
namespace llvm {
namespace XCore {
}
}
-using namespace llvm;
+// Pin the vtable to this file.
+void XCoreInstrInfo::anchor() {}
XCoreInstrInfo::XCoreInstrInfo()
- : TargetInstrInfoImpl(XCoreInsts, array_lengthof(XCoreInsts)),
- RI(*this) {
+ : XCoreGenInstrInfo(XCore::ADJCALLSTACKDOWN, XCore::ADJCALLSTACKUP),
+ RI() {
}
static bool isZeroImm(const MachineOperand &op) {
assert((Cond.size() == 2 || Cond.size() == 0) &&
"Unexpected number of components!");
- if (FBB == 0) { // One way branch.
+ if (!FBB) { // One way branch.
if (Cond.empty()) {
// Unconditional branch
BuildMI(&MBB, DL, get(XCore::BRFU_lu6)).addMBB(TBB);
{
DebugLoc DL;
if (I != MBB.end()) DL = I->getDebugLoc();
+ MachineFunction *MF = MBB.getParent();
+ const MachineFrameInfo &MFI = *MF->getFrameInfo();
+ MachineMemOperand *MMO =
+ MF->getMachineMemOperand(MachinePointerInfo::getFixedStack(FrameIndex),
+ MachineMemOperand::MOStore,
+ MFI.getObjectSize(FrameIndex),
+ MFI.getObjectAlignment(FrameIndex));
BuildMI(MBB, I, DL, get(XCore::STWFI))
.addReg(SrcReg, getKillRegState(isKill))
.addFrameIndex(FrameIndex)
- .addImm(0);
+ .addImm(0)
+ .addMemOperand(MMO);
}
void XCoreInstrInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
{
DebugLoc DL;
if (I != MBB.end()) DL = I->getDebugLoc();
+ MachineFunction *MF = MBB.getParent();
+ const MachineFrameInfo &MFI = *MF->getFrameInfo();
+ MachineMemOperand *MMO =
+ MF->getMachineMemOperand(MachinePointerInfo::getFixedStack(FrameIndex),
+ MachineMemOperand::MOLoad,
+ MFI.getObjectSize(FrameIndex),
+ MFI.getObjectAlignment(FrameIndex));
BuildMI(MBB, I, DL, get(XCore::LDWFI), DestReg)
.addFrameIndex(FrameIndex)
- .addImm(0);
-}
-
-bool XCoreInstrInfo::spillCalleeSavedRegisters(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- const std::vector<CalleeSavedInfo> &CSI,
- const TargetRegisterInfo *TRI) const {
- if (CSI.empty()) {
- return true;
- }
- MachineFunction *MF = MBB.getParent();
- XCoreFunctionInfo *XFI = MF->getInfo<XCoreFunctionInfo>();
-
- bool emitFrameMoves = XCoreRegisterInfo::needsFrameMoves(*MF);
-
- DebugLoc DL;
- if (MI != MBB.end()) DL = MI->getDebugLoc();
-
- for (std::vector<CalleeSavedInfo>::const_iterator it = CSI.begin();
- it != CSI.end(); ++it) {
- // Add the callee-saved register as live-in. It's killed at the spill.
- MBB.addLiveIn(it->getReg());
-
- unsigned Reg = it->getReg();
- const TargetRegisterClass *RC = TRI->getMinimalPhysRegClass(Reg);
- storeRegToStackSlot(MBB, MI, Reg, true,
- it->getFrameIdx(), RC, &RI);
- if (emitFrameMoves) {
- MCSymbol *SaveLabel = MF->getContext().CreateTempSymbol();
- BuildMI(MBB, MI, DL, get(XCore::PROLOG_LABEL)).addSym(SaveLabel);
- XFI->getSpillLabels().push_back(std::make_pair(SaveLabel, *it));
- }
- }
- return true;
-}
-
-bool XCoreInstrInfo::restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- const std::vector<CalleeSavedInfo> &CSI,
- const TargetRegisterInfo *TRI) const
-{
- bool AtStart = MI == MBB.begin();
- MachineBasicBlock::iterator BeforeI = MI;
- if (!AtStart)
- --BeforeI;
- for (std::vector<CalleeSavedInfo>::const_iterator it = CSI.begin();
- it != CSI.end(); ++it) {
- unsigned Reg = it->getReg();
- const TargetRegisterClass *RC = TRI->getMinimalPhysRegClass(Reg);
- loadRegFromStackSlot(MBB, MI, it->getReg(),
- it->getFrameIdx(),
- RC, &RI);
- assert(MI != MBB.begin() &&
- "loadRegFromStackSlot didn't insert any code!");
- // Insert in reverse order. loadRegFromStackSlot can insert multiple
- // instructions.
- if (AtStart)
- MI = MBB.begin();
- else {
- MI = BeforeI;
- ++MI;
- }
- }
- return true;
+ .addImm(0)
+ .addMemOperand(MMO);
}
/// ReverseBranchCondition - Return the inverse opcode of the
/// specified Branch instruction.
bool XCoreInstrInfo::
-ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const
-{
+ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const {
assert((Cond.size() == 2) &&
"Invalid XCore branch condition!");
Cond[0].setImm(GetOppositeBranchCondition((XCore::CondCode)Cond[0].getImm()));
return false;
}
+
+static inline bool isImmU6(unsigned val) {
+ return val < (1 << 6);
+}
+
+static inline bool isImmU16(unsigned val) {
+ return val < (1 << 16);
+}
+
+static bool isImmMskBitp(unsigned val) {
+ if (!isMask_32(val)) {
+ return false;
+ }
+ int N = Log2_32(val) + 1;
+ return (N >= 1 && N <= 8) || N == 16 || N == 24 || N == 32;
+}
+
+MachineBasicBlock::iterator XCoreInstrInfo::loadImmediate(
+ MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator MI,
+ unsigned Reg, uint64_t Value) const {
+ DebugLoc dl;
+ if (MI != MBB.end()) dl = MI->getDebugLoc();
+ if (isImmMskBitp(Value)) {
+ int N = Log2_32(Value) + 1;
+ return BuildMI(MBB, MI, dl, get(XCore::MKMSK_rus), Reg).addImm(N);
+ }
+ if (isImmU16(Value)) {
+ int Opcode = isImmU6(Value) ? XCore::LDC_ru6 : XCore::LDC_lru6;
+ return BuildMI(MBB, MI, dl, get(Opcode), Reg).addImm(Value);
+ }
+ MachineConstantPool *ConstantPool = MBB.getParent()->getConstantPool();
+ const Constant *C = ConstantInt::get(
+ Type::getInt32Ty(MBB.getParent()->getFunction()->getContext()), Value);
+ unsigned Idx = ConstantPool->getConstantPoolIndex(C, 4);
+ return BuildMI(MBB, MI, dl, get(XCore::LDWCP_lru6), Reg)
+ .addConstantPoolIndex(Idx);
+}
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