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Change XCoreAsmPrinter to lower MachineInstrs to MCInsts before emission.

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This change adds XCoreMCInstLower to do the lowering to MCInst and
XCoreInstPrinter to print the MCInsts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170288 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Osborne
2012-12-16 16:20:48 +00:00
parent 6438214d21
commit 9578d793c9
14 changed files with 401 additions and 27 deletions
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56
lib/Target/XCore/XCoreAsmPrinter.cpp
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@ -15,6 +15,8 @@
#define DEBUG_TYPE "asm-printer"
#include "XCore.h"
#include "XCoreInstrInfo.h"
#include "XCoreMCInstLower.h"
#include "InstPrinter/XCoreInstPrinter.h"
#include "XCoreSubtarget.h"
#include "XCoreTargetMachine.h"
#include "llvm/ADT/SmallString.h"
@ -30,6 +32,7 @@
#include "llvm/DebugInfo.h"
#include "llvm/DerivedTypes.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Module.h"
@ -52,16 +55,17 @@ static cl::opt<unsigned> MaxThreads("xcore-max-threads", cl::Optional,
namespace {
class XCoreAsmPrinter : public AsmPrinter {
const XCoreSubtarget &Subtarget;
XCoreMCInstLower MCInstLowering;
void PrintDebugValueComment(const MachineInstr *MI, raw_ostream &OS);
public:
explicit XCoreAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
: AsmPrinter(TM, Streamer), Subtarget(TM.getSubtarget<XCoreSubtarget>()){}
: AsmPrinter(TM, Streamer), Subtarget(TM.getSubtarget<XCoreSubtarget>()),
MCInstLowering(*this) {}
virtual const char *getPassName() const {
return "XCore Assembly Printer";
}
void printMemOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
void printInlineJT(const MachineInstr *MI, int opNum, raw_ostream &O,
const std::string &directive = ".jmptable");
void printInlineJT32(const MachineInstr *MI, int opNum, raw_ostream &O) {
@ -75,18 +79,14 @@ namespace {
void emitArrayBound(MCSymbol *Sym, const GlobalVariable *GV);
virtual void EmitGlobalVariable(const GlobalVariable *GV);
void printInstruction(const MachineInstr *MI, raw_ostream &O); // autogen'd.
static const char *getRegisterName(unsigned RegNo);
void EmitFunctionEntryLabel();
void EmitInstruction(const MachineInstr *MI);
void EmitFunctionBodyStart();
void EmitFunctionBodyEnd();
virtual MachineLocation getDebugValueLocation(const MachineInstr *MI) const;
};
} // end of anonymous namespace
#include "XCoreGenAsmWriter.inc"
void XCoreAsmPrinter::emitArrayBound(MCSymbol *Sym, const GlobalVariable *GV) {
assert(((GV->hasExternalLinkage() ||
GV->hasWeakLinkage()) ||
@ -177,6 +177,10 @@ void XCoreAsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
OutStreamer.EmitRawText("\t.cc_bottom " + Twine(GVSym->getName()) + ".data");
}
void XCoreAsmPrinter::EmitFunctionBodyStart() {
MCInstLowering.Initialize(Mang, &MF->getContext());
}
/// EmitFunctionBodyEnd - Targets can override this to emit stuff after
/// the last basic block in the function.
void XCoreAsmPrinter::EmitFunctionBodyEnd() {
@ -192,17 +196,6 @@ void XCoreAsmPrinter::EmitFunctionEntryLabel() {
OutStreamer.EmitLabel(CurrentFnSym);
}
void XCoreAsmPrinter::printMemOperand(const MachineInstr *MI, int opNum,
raw_ostream &O) {
printOperand(MI, opNum, O);
if (MI->getOperand(opNum+1).isImm() && MI->getOperand(opNum+1).getImm() == 0)
return;
O << "+";
printOperand(MI, opNum+1, O);
}
void XCoreAsmPrinter::
printInlineJT(const MachineInstr *MI, int opNum, raw_ostream &O,
const std::string &directive) {
@ -225,7 +218,7 @@ void XCoreAsmPrinter::printOperand(const MachineInstr *MI, int opNum,
const MachineOperand &MO = MI->getOperand(opNum);
switch (MO.getType()) {
case MachineOperand::MO_Register:
O << getRegisterName(MO.getReg());
O << XCoreInstPrinter::getRegisterName(MO.getReg());
break;
case MachineOperand::MO_Immediate:
O << MO.getImm();
@ -270,7 +263,7 @@ bool XCoreAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
return AsmPrinter::PrintAsmOperand(MI, OpNo, AsmVariant, ExtraCode, O);
}
printOperand(MI, OpNo, O);
printOperand(MI, OpNo, O);
return false;
}
@ -317,15 +310,30 @@ void XCoreAsmPrinter::EmitInstruction(const MachineInstr *MI) {
}
case XCore::ADD_2rus:
if (MI->getOperand(2).getImm() == 0) {
O << "\tmov " << getRegisterName(MI->getOperand(0).getReg()) << ", "
<< getRegisterName(MI->getOperand(1).getReg());
O << "\tmov "
<< XCoreInstPrinter::getRegisterName(MI->getOperand(0).getReg()) << ", "
<< XCoreInstPrinter::getRegisterName(MI->getOperand(1).getReg());
OutStreamer.EmitRawText(O.str());
return;
}
break;
case XCore::BR_JT:
case XCore::BR_JT32:
O << "\tbru "
<< XCoreInstPrinter::getRegisterName(MI->getOperand(1).getReg()) << '\n';
if (MI->getOpcode() == XCore::BR_JT)
printInlineJT(MI, 0, O);
else
printInlineJT32(MI, 0, O);
O << '\n';
OutStreamer.EmitRawText(O.str());
return;
}
printInstruction(MI, O);
OutStreamer.EmitRawText(O.str());
MCInst TmpInst;
MCInstLowering.Lower(MI, TmpInst);
OutStreamer.EmitInstruction(TmpInst);
}
// Force static initialization.