[llvm-commits] [llvm] r170288 - in /llvm/trunk/lib/Target/XCore: CMakeLists.txt InstPrinter/ InstPrinter/CMakeLists.txt InstPrinter/LLVMBuild.txt InstPrinter/Makefile InstPrinter/XCoreInstPrinter.cpp InstPrinter/XCoreInstPrinter.h LLVMBuild.txt MCTargetDesc/LLVMBuild.txt MCTargetDesc/XCoreMCTargetDesc.cpp Makefile XCore.td XCoreAsmPrinter.cpp XCoreMCInstLower.cpp XCoreMCInstLower.h
Richard Osborne
richard at xmos.com
Sun Dec 16 08:20:48 PST 2012
Author: friedgold
Date: Sun Dec 16 10:20:48 2012
New Revision: 170288
URL: http://llvm.org/viewvc/llvm-project?rev=170288&view=rev
Log:
Change XCoreAsmPrinter to lower MachineInstrs to MCInsts before emission.
This change adds XCoreMCInstLower to do the lowering to MCInst and
XCoreInstPrinter to print the MCInsts.
Added:
llvm/trunk/lib/Target/XCore/InstPrinter/
llvm/trunk/lib/Target/XCore/InstPrinter/CMakeLists.txt
llvm/trunk/lib/Target/XCore/InstPrinter/LLVMBuild.txt
- copied, changed from r170286, llvm/trunk/lib/Target/XCore/MCTargetDesc/LLVMBuild.txt
llvm/trunk/lib/Target/XCore/InstPrinter/Makefile
llvm/trunk/lib/Target/XCore/InstPrinter/XCoreInstPrinter.cpp
llvm/trunk/lib/Target/XCore/InstPrinter/XCoreInstPrinter.h
llvm/trunk/lib/Target/XCore/XCoreMCInstLower.cpp
llvm/trunk/lib/Target/XCore/XCoreMCInstLower.h
Modified:
llvm/trunk/lib/Target/XCore/CMakeLists.txt
llvm/trunk/lib/Target/XCore/LLVMBuild.txt
llvm/trunk/lib/Target/XCore/MCTargetDesc/LLVMBuild.txt
llvm/trunk/lib/Target/XCore/MCTargetDesc/XCoreMCTargetDesc.cpp
llvm/trunk/lib/Target/XCore/Makefile
llvm/trunk/lib/Target/XCore/XCore.td
llvm/trunk/lib/Target/XCore/XCoreAsmPrinter.cpp
Modified: llvm/trunk/lib/Target/XCore/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/CMakeLists.txt?rev=170288&r1=170287&r2=170288&view=diff
==============================================================================
--- llvm/trunk/lib/Target/XCore/CMakeLists.txt (original)
+++ llvm/trunk/lib/Target/XCore/CMakeLists.txt Sun Dec 16 10:20:48 2012
@@ -15,6 +15,7 @@
XCoreISelDAGToDAG.cpp
XCoreISelLowering.cpp
XCoreMachineFunctionInfo.cpp
+ XCoreMCInstLower.cpp
XCoreRegisterInfo.cpp
XCoreSubtarget.cpp
XCoreTargetMachine.cpp
@@ -24,5 +25,6 @@
add_dependencies(LLVMXCoreCodeGen intrinsics_gen)
+add_subdirectory(InstPrinter)
add_subdirectory(TargetInfo)
add_subdirectory(MCTargetDesc)
Added: llvm/trunk/lib/Target/XCore/InstPrinter/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/InstPrinter/CMakeLists.txt?rev=170288&view=auto
==============================================================================
--- llvm/trunk/lib/Target/XCore/InstPrinter/CMakeLists.txt (added)
+++ llvm/trunk/lib/Target/XCore/InstPrinter/CMakeLists.txt Sun Dec 16 10:20:48 2012
@@ -0,0 +1,7 @@
+include_directories( ${CMAKE_CURRENT_BINARY_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/.. )
+
+add_llvm_library(LLVMXCoreAsmPrinter
+ XCoreInstPrinter.cpp
+ )
+
+add_dependencies(LLVMXCoreAsmPrinter XCoreCommonTableGen)
Copied: llvm/trunk/lib/Target/XCore/InstPrinter/LLVMBuild.txt (from r170286, llvm/trunk/lib/Target/XCore/MCTargetDesc/LLVMBuild.txt)
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/InstPrinter/LLVMBuild.txt?p2=llvm/trunk/lib/Target/XCore/InstPrinter/LLVMBuild.txt&p1=llvm/trunk/lib/Target/XCore/MCTargetDesc/LLVMBuild.txt&r1=170286&r2=170288&rev=170288&view=diff
==============================================================================
--- llvm/trunk/lib/Target/XCore/MCTargetDesc/LLVMBuild.txt (original)
+++ llvm/trunk/lib/Target/XCore/InstPrinter/LLVMBuild.txt Sun Dec 16 10:20:48 2012
@@ -1,4 +1,4 @@
-;===- ./lib/Target/XCore/MCTargetDesc/LLVMBuild.txt ------------*- Conf -*--===;
+;===- ./lib/Target/XCore/InstPrinter/LLVMBuild.txt -------------*- Conf -*--===;
;
; The LLVM Compiler Infrastructure
;
@@ -17,7 +17,7 @@
[component_0]
type = Library
-name = XCoreDesc
+name = XCoreAsmPrinter
parent = XCore
-required_libraries = MC XCoreInfo
+required_libraries = MC Support
add_to_library_groups = XCore
Added: llvm/trunk/lib/Target/XCore/InstPrinter/Makefile
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/InstPrinter/Makefile?rev=170288&view=auto
==============================================================================
--- llvm/trunk/lib/Target/XCore/InstPrinter/Makefile (added)
+++ llvm/trunk/lib/Target/XCore/InstPrinter/Makefile Sun Dec 16 10:20:48 2012
@@ -0,0 +1,16 @@
+##===- lib/Target/XCore/AsmPrinter/Makefile ----------------*- Makefile -*-===##
+#
+# The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+LEVEL = ../../../..
+LIBRARYNAME = LLVMXCoreAsmPrinter
+
+# Hack: we need to include 'main' xcore target directory to grab private headers
+CPP.Flags += -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/..
+
+include $(LEVEL)/Makefile.common
Added: llvm/trunk/lib/Target/XCore/InstPrinter/XCoreInstPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/InstPrinter/XCoreInstPrinter.cpp?rev=170288&view=auto
==============================================================================
--- llvm/trunk/lib/Target/XCore/InstPrinter/XCoreInstPrinter.cpp (added)
+++ llvm/trunk/lib/Target/XCore/InstPrinter/XCoreInstPrinter.cpp Sun Dec 16 10:20:48 2012
@@ -0,0 +1,96 @@
+//===-- XCoreInstPrinter.cpp - Convert XCore MCInst to assembly syntax ----===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This class prints an XCore MCInst to a .s file.
+//
+//===----------------------------------------------------------------------===//
+
+#define DEBUG_TYPE "asm-printer"
+#include "XCoreInstPrinter.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCSymbol.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace llvm;
+
+#include "XCoreGenAsmWriter.inc"
+
+void XCoreInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
+ OS << StringRef(getRegisterName(RegNo)).lower();
+}
+
+void XCoreInstPrinter::printInst(const MCInst *MI, raw_ostream &O,
+ StringRef Annot) {
+ printInstruction(MI, O);
+ printAnnotation(O, Annot);
+}
+
+void XCoreInstPrinter::
+printInlineJT(const MCInst *MI, int opNum, raw_ostream &O) {
+ report_fatal_error("can't handle InlineJT");
+}
+
+void XCoreInstPrinter::
+printInlineJT32(const MCInst *MI, int opNum, raw_ostream &O) {
+ report_fatal_error("can't handle InlineJT32");
+}
+
+static void printExpr(const MCExpr *Expr, raw_ostream &OS) {
+ int Offset = 0;
+ const MCSymbolRefExpr *SRE;
+
+ if (const MCBinaryExpr *BE = dyn_cast<MCBinaryExpr>(Expr)) {
+ SRE = dyn_cast<MCSymbolRefExpr>(BE->getLHS());
+ const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(BE->getRHS());
+ assert(SRE && CE && "Binary expression must be sym+const.");
+ Offset = CE->getValue();
+ } else if (!(SRE = dyn_cast<MCSymbolRefExpr>(Expr))) {
+ assert(false && "Unexpected MCExpr type.");
+ }
+ assert(SRE->getKind() == MCSymbolRefExpr::VK_None);
+
+ OS << SRE->getSymbol();
+
+ if (Offset) {
+ if (Offset > 0)
+ OS << '+';
+ OS << Offset;
+ }
+}
+
+void XCoreInstPrinter::
+printOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O) {
+ const MCOperand &Op = MI->getOperand(OpNo);
+ if (Op.isReg()) {
+ printRegName(O, Op.getReg());
+ return;
+ }
+
+ if (Op.isImm()) {
+ O << Op.getImm();
+ return;
+ }
+
+ assert(Op.isExpr() && "unknown operand kind in printOperand");
+ printExpr(Op.getExpr(), O);
+}
+
+void XCoreInstPrinter::
+printMemOperand(const MCInst *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);
+}
Added: llvm/trunk/lib/Target/XCore/InstPrinter/XCoreInstPrinter.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/InstPrinter/XCoreInstPrinter.h?rev=170288&view=auto
==============================================================================
--- llvm/trunk/lib/Target/XCore/InstPrinter/XCoreInstPrinter.h (added)
+++ llvm/trunk/lib/Target/XCore/InstPrinter/XCoreInstPrinter.h Sun Dec 16 10:20:48 2012
@@ -0,0 +1,42 @@
+//== XCoreInstPrinter.h - Convert XCore MCInst to assembly syntax -*- C++ -*-=//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This class prints a XCore MCInst to a .s file.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef XCOREINSTPRINTER_H
+#define XCOREINSTPRINTER_H
+#include "llvm/MC/MCInstPrinter.h"
+
+namespace llvm {
+
+class TargetMachine;
+
+class XCoreInstPrinter : public MCInstPrinter {
+public:
+ XCoreInstPrinter(const MCAsmInfo &MAI, const MCInstrInfo &MII,
+ const MCRegisterInfo &MRI)
+ : MCInstPrinter(MAI, MII, MRI) {}
+
+ // Autogenerated by tblgen.
+ void printInstruction(const MCInst *MI, raw_ostream &O);
+ static const char *getRegisterName(unsigned RegNo);
+
+ virtual void printRegName(raw_ostream &OS, unsigned RegNo) const;
+ virtual void printInst(const MCInst *MI, raw_ostream &O, StringRef Annot);
+private:
+ void printInlineJT(const MCInst *MI, int opNum, raw_ostream &O);
+ void printInlineJT32(const MCInst *MI, int opNum, raw_ostream &O);
+ void printOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
+ void printMemOperand(const MCInst *MI, int opNum, raw_ostream &O);
+};
+} // end namespace llvm
+
+#endif
Modified: llvm/trunk/lib/Target/XCore/LLVMBuild.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/LLVMBuild.txt?rev=170288&r1=170287&r2=170288&view=diff
==============================================================================
--- llvm/trunk/lib/Target/XCore/LLVMBuild.txt (original)
+++ llvm/trunk/lib/Target/XCore/LLVMBuild.txt Sun Dec 16 10:20:48 2012
@@ -16,7 +16,7 @@
;===------------------------------------------------------------------------===;
[common]
-subdirectories = MCTargetDesc TargetInfo
+subdirectories = InstPrinter MCTargetDesc TargetInfo
[component_0]
type = TargetGroup
Modified: llvm/trunk/lib/Target/XCore/MCTargetDesc/LLVMBuild.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/MCTargetDesc/LLVMBuild.txt?rev=170288&r1=170287&r2=170288&view=diff
==============================================================================
--- llvm/trunk/lib/Target/XCore/MCTargetDesc/LLVMBuild.txt (original)
+++ llvm/trunk/lib/Target/XCore/MCTargetDesc/LLVMBuild.txt Sun Dec 16 10:20:48 2012
@@ -19,5 +19,5 @@
type = Library
name = XCoreDesc
parent = XCore
-required_libraries = MC XCoreInfo
+required_libraries = MC XCoreAsmPrinter XCoreInfo
add_to_library_groups = XCore
Modified: llvm/trunk/lib/Target/XCore/MCTargetDesc/XCoreMCTargetDesc.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/MCTargetDesc/XCoreMCTargetDesc.cpp?rev=170288&r1=170287&r2=170288&view=diff
==============================================================================
--- llvm/trunk/lib/Target/XCore/MCTargetDesc/XCoreMCTargetDesc.cpp (original)
+++ llvm/trunk/lib/Target/XCore/MCTargetDesc/XCoreMCTargetDesc.cpp Sun Dec 16 10:20:48 2012
@@ -13,6 +13,7 @@
#include "XCoreMCTargetDesc.h"
#include "XCoreMCAsmInfo.h"
+#include "InstPrinter/XCoreInstPrinter.h"
#include "llvm/MC/MCCodeGenInfo.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCRegisterInfo.h"
@@ -69,6 +70,15 @@
return X;
}
+static MCInstPrinter *createXCoreMCInstPrinter(const Target &T,
+ unsigned SyntaxVariant,
+ const MCAsmInfo &MAI,
+ const MCInstrInfo &MII,
+ const MCRegisterInfo &MRI,
+ const MCSubtargetInfo &STI) {
+ return new XCoreInstPrinter(MAI, MII, MRI);
+}
+
// Force static initialization.
extern "C" void LLVMInitializeXCoreTargetMC() {
// Register the MC asm info.
@@ -87,4 +97,8 @@
// Register the MC subtarget info.
TargetRegistry::RegisterMCSubtargetInfo(TheXCoreTarget,
createXCoreMCSubtargetInfo);
+
+ // Register the MCInstPrinter
+ TargetRegistry::RegisterMCInstPrinter(TheXCoreTarget,
+ createXCoreMCInstPrinter);
}
Modified: llvm/trunk/lib/Target/XCore/Makefile
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/Makefile?rev=170288&r1=170287&r2=170288&view=diff
==============================================================================
--- llvm/trunk/lib/Target/XCore/Makefile (original)
+++ llvm/trunk/lib/Target/XCore/Makefile Sun Dec 16 10:20:48 2012
@@ -17,7 +17,7 @@
XCoreGenDAGISel.inc XCoreGenCallingConv.inc \
XCoreGenSubtargetInfo.inc
-DIRS = TargetInfo MCTargetDesc
+DIRS = InstPrinter TargetInfo MCTargetDesc
include $(LEVEL)/Makefile.common
Modified: llvm/trunk/lib/Target/XCore/XCore.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/XCore.td?rev=170288&r1=170287&r2=170288&view=diff
==============================================================================
--- llvm/trunk/lib/Target/XCore/XCore.td (original)
+++ llvm/trunk/lib/Target/XCore/XCore.td Sun Dec 16 10:20:48 2012
@@ -41,7 +41,13 @@
// Declare the target which we are implementing
//===----------------------------------------------------------------------===//
+def XCoreAsmWriter : AsmWriter {
+ string AsmWriterClassName = "InstPrinter";
+ bit isMCAsmWriter = 1;
+}
+
def XCore : Target {
// Pull in Instruction Info:
let InstructionSet = XCoreInstrInfo;
+ let AssemblyWriters = [XCoreAsmWriter];
}
Modified: llvm/trunk/lib/Target/XCore/XCoreAsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/XCoreAsmPrinter.cpp?rev=170288&r1=170287&r2=170288&view=diff
==============================================================================
--- llvm/trunk/lib/Target/XCore/XCoreAsmPrinter.cpp (original)
+++ llvm/trunk/lib/Target/XCore/XCoreAsmPrinter.cpp Sun Dec 16 10:20:48 2012
@@ -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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
return AsmPrinter::PrintAsmOperand(MI, OpNo, AsmVariant, ExtraCode, O);
}
-printOperand(MI, OpNo, O);
+ printOperand(MI, OpNo, O);
return false;
}
@@ -317,15 +310,30 @@
}
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.
Added: llvm/trunk/lib/Target/XCore/XCoreMCInstLower.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/XCoreMCInstLower.cpp?rev=170288&view=auto
==============================================================================
--- llvm/trunk/lib/Target/XCore/XCoreMCInstLower.cpp (added)
+++ llvm/trunk/lib/Target/XCore/XCoreMCInstLower.cpp Sun Dec 16 10:20:48 2012
@@ -0,0 +1,116 @@
+//===-- XCoreMCInstLower.cpp - Convert XCore MachineInstr to MCInst -------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains code to lower XCore MachineInstrs to their corresponding
+// MCInst records.
+//
+//===----------------------------------------------------------------------===//
+#include "XCoreMCInstLower.h"
+#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/CodeGen/MachineOperand.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/Target/Mangler.h"
+
+using namespace llvm;
+
+XCoreMCInstLower::XCoreMCInstLower(class AsmPrinter &asmprinter)
+: Printer(asmprinter) {}
+
+void XCoreMCInstLower::Initialize(Mangler *M, MCContext *C) {
+ Mang = M;
+ Ctx = C;
+}
+
+MCOperand XCoreMCInstLower::LowerSymbolOperand(const MachineOperand &MO,
+ MachineOperandType MOTy,
+ unsigned Offset) const {
+ MCSymbolRefExpr::VariantKind Kind = MCSymbolRefExpr::VK_None;
+ const MCSymbol *Symbol;
+
+ switch (MOTy) {
+ case MachineOperand::MO_MachineBasicBlock:
+ Symbol = MO.getMBB()->getSymbol();
+ break;
+ case MachineOperand::MO_GlobalAddress:
+ Symbol = Mang->getSymbol(MO.getGlobal());
+ Offset += MO.getOffset();
+ break;
+ case MachineOperand::MO_BlockAddress:
+ Symbol = Printer.GetBlockAddressSymbol(MO.getBlockAddress());
+ Offset += MO.getOffset();
+ break;
+ case MachineOperand::MO_ExternalSymbol:
+ Symbol = Printer.GetExternalSymbolSymbol(MO.getSymbolName());
+ Offset += MO.getOffset();
+ break;
+ case MachineOperand::MO_JumpTableIndex:
+ Symbol = Printer.GetJTISymbol(MO.getIndex());
+ break;
+ case MachineOperand::MO_ConstantPoolIndex:
+ Symbol = Printer.GetCPISymbol(MO.getIndex());
+ Offset += MO.getOffset();
+ break;
+ default:
+ llvm_unreachable("<unknown operand type>");
+ }
+
+ const MCSymbolRefExpr *MCSym = MCSymbolRefExpr::Create(Symbol, Kind, *Ctx);
+
+ if (!Offset)
+ return MCOperand::CreateExpr(MCSym);
+
+ // Assume offset is never negative.
+ assert(Offset > 0);
+
+ const MCConstantExpr *OffsetExpr = MCConstantExpr::Create(Offset, *Ctx);
+ const MCBinaryExpr *Add = MCBinaryExpr::CreateAdd(MCSym, OffsetExpr, *Ctx);
+ return MCOperand::CreateExpr(Add);
+}
+
+MCOperand XCoreMCInstLower::LowerOperand(const MachineOperand &MO,
+ unsigned offset) const {
+ MachineOperandType MOTy = MO.getType();
+
+ switch (MOTy) {
+ default: llvm_unreachable("unknown operand type");
+ case MachineOperand::MO_Register:
+ // Ignore all implicit register operands.
+ if (MO.isImplicit()) break;
+ return MCOperand::CreateReg(MO.getReg());
+ case MachineOperand::MO_Immediate:
+ return MCOperand::CreateImm(MO.getImm() + offset);
+ case MachineOperand::MO_MachineBasicBlock:
+ case MachineOperand::MO_GlobalAddress:
+ case MachineOperand::MO_ExternalSymbol:
+ case MachineOperand::MO_JumpTableIndex:
+ case MachineOperand::MO_ConstantPoolIndex:
+ case MachineOperand::MO_BlockAddress:
+ return LowerSymbolOperand(MO, MOTy, offset);
+ case MachineOperand::MO_RegisterMask:
+ break;
+ }
+
+ return MCOperand();
+}
+
+void XCoreMCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const {
+ OutMI.setOpcode(MI->getOpcode());
+
+ for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
+ const MachineOperand &MO = MI->getOperand(i);
+ MCOperand MCOp = LowerOperand(MO);
+
+ if (MCOp.isValid())
+ OutMI.addOperand(MCOp);
+ }
+}
Added: llvm/trunk/lib/Target/XCore/XCoreMCInstLower.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/XCoreMCInstLower.h?rev=170288&view=auto
==============================================================================
--- llvm/trunk/lib/Target/XCore/XCoreMCInstLower.h (added)
+++ llvm/trunk/lib/Target/XCore/XCoreMCInstLower.h Sun Dec 16 10:20:48 2012
@@ -0,0 +1,44 @@
+//===-- XCoreMCInstLower.h - Lower MachineInstr to MCInst ------*- C++ -*--===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef XCOREMCINSTLOWER_H
+#define XCOREMCINSTLOWER_H
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/CodeGen/MachineOperand.h"
+#include "llvm/Support/Compiler.h"
+
+namespace llvm {
+ class MCContext;
+ class MCInst;
+ class MCOperand;
+ class MachineInstr;
+ class MachineFunction;
+ class Mangler;
+ class AsmPrinter;
+
+/// XCoreMCInstLower - This class is used to lower an MachineInstr into an
+// MCInst.
+class LLVM_LIBRARY_VISIBILITY XCoreMCInstLower {
+ typedef MachineOperand::MachineOperandType MachineOperandType;
+ MCContext *Ctx;
+ Mangler *Mang;
+ AsmPrinter &Printer;
+public:
+ XCoreMCInstLower(class AsmPrinter &asmprinter);
+ void Initialize(Mangler *mang, MCContext *C);
+ void Lower(const MachineInstr *MI, MCInst &OutMI) const;
+ MCOperand LowerOperand(const MachineOperand& MO, unsigned offset = 0) const;
+
+private:
+ MCOperand LowerSymbolOperand(const MachineOperand &MO,
+ MachineOperandType MOTy, unsigned Offset) const;
+};
+}
+
+#endif
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