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kaz7Simon Moll
kaz7
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Simon Moll
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[VE] Minimal codegen for empty functions
Summary: This patch implements minimal VE code generation for empty function bodies (no args, no value return). Contents * empty function code generation test. * Minimal function prologue & epilogue emission * Instruction formats and instruction definitions as far as required for the empty function prologue & epilogue. * I64 register class definitions. Reviewed By: arsenm Differential Revision: https://reviews.llvm.org/D72598
1 parent be8f217 commit 064859b

37 files changed

+2581
-18
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‎llvm/lib/Target/VE/CMakeLists.txt

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set(LLVM_TARGET_DEFINITIONS VE.td)
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tablegen(LLVM VEGenRegisterInfo.inc -gen-register-info)
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tablegen(LLVM VEGenInstrInfo.inc -gen-instr-info)
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tablegen(LLVM VEGenAsmWriter.inc -gen-asm-writer)
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tablegen(LLVM VEGenDAGISel.inc -gen-dag-isel)
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tablegen(LLVM VEGenSubtargetInfo.inc -gen-subtarget)
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tablegen(LLVM VEGenCallingConv.inc -gen-callingconv)
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add_public_tablegen_target(VECommonTableGen)
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311
add_llvm_target(VECodeGen
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VEAsmPrinter.cpp
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VEFrameLowering.cpp
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VEISelDAGToDAG.cpp
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VEISelLowering.cpp
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VEInstrInfo.cpp
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VEMCInstLower.cpp
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VERegisterInfo.cpp
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VESubtarget.cpp
420
VETargetMachine.cpp
521
)
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add_subdirectory(InstPrinter)
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add_subdirectory(TargetInfo)
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add_subdirectory(MCTargetDesc)

‎llvm/lib/Target/VE/InstPrinter/CMakeLists.txt

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add_llvm_component_library(LLVMVEAsmPrinter
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VEInstPrinter.cpp
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)

‎llvm/lib/Target/VE/InstPrinter/LLVMBuild.txt

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;===- ./lib/Target/VE/InstPrinter/LLVMBuild.txt ----------------*- Conf -*--===;
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;
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; Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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; See https://llvm.org/LICENSE.txt for license information.
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; SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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;
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;===------------------------------------------------------------------------===;
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;
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; This is an LLVMBuild description file for the components in this subdirectory.
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;
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; For more information on the LLVMBuild system, please see:
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;
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; http://llvm.org/docs/LLVMBuild.html
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;
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;===------------------------------------------------------------------------===;
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[component_0]
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type = Library
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name = VEAsmPrinter
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parent = VE
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required_libraries = MC Support
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add_to_library_groups = VE

‎llvm/lib/Target/VE/InstPrinter/VEInstPrinter.cpp

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//===-- VEInstPrinter.cpp - Convert VE MCInst to assembly syntax -----------==//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This class prints an VE MCInst to a .s file.
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//
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//===----------------------------------------------------------------------===//
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#include "VEInstPrinter.h"
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#include "VE.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCRegisterInfo.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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#define DEBUG_TYPE "ve-asmprinter"
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// The generated AsmMatcher VEGenAsmWriter uses "VE" as the target
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// namespace.
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namespace llvm {
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namespace VE {
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using namespace VE;
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}
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} // namespace llvm
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#define GET_INSTRUCTION_NAME
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#define PRINT_ALIAS_INSTR
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#include "VEGenAsmWriter.inc"
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void VEInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
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OS << '%' << StringRef(getRegisterName(RegNo)).lower();
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}
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void VEInstPrinter::printInst(const MCInst *MI, uint64_t Address,
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StringRef Annot, const MCSubtargetInfo &STI,
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raw_ostream &OS) {
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if (!printAliasInstr(MI, STI, OS))
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printInstruction(MI, Address, STI, OS);
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printAnnotation(OS, Annot);
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}
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void VEInstPrinter::printOperand(const MCInst *MI, int opNum,
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const MCSubtargetInfo &STI, raw_ostream &O) {
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const MCOperand &MO = MI->getOperand(opNum);
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if (MO.isReg()) {
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printRegName(O, MO.getReg());
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return;
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}
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if (MO.isImm()) {
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switch (MI->getOpcode()) {
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default:
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// Expects signed 32bit literals
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assert(isInt<32>(MO.getImm()) && "Immediate too large");
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int32_t TruncatedImm = static_cast<int32_t>(MO.getImm());
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O << TruncatedImm;
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return;
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}
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}
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assert(MO.isExpr() && "Unknown operand kind in printOperand");
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MO.getExpr()->print(O, &MAI);
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}
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void VEInstPrinter::printMemASXOperand(const MCInst *MI, int opNum,
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const MCSubtargetInfo &STI,
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raw_ostream &O, const char *Modifier) {
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// If this is an ADD operand, emit it like normal operands.
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if (Modifier && !strcmp(Modifier, "arith")) {
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printOperand(MI, opNum, STI, O);
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O << ", ";
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printOperand(MI, opNum + 1, STI, O);
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return;
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}
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const MCOperand &MO = MI->getOperand(opNum + 1);
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if (!MO.isImm() || MO.getImm() != 0) {
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printOperand(MI, opNum + 1, STI, O);
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}
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O << "(,";
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printOperand(MI, opNum, STI, O);
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O << ")";
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}
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void VEInstPrinter::printMemASOperand(const MCInst *MI, int opNum,
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const MCSubtargetInfo &STI,
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raw_ostream &O, const char *Modifier) {
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// If this is an ADD operand, emit it like normal operands.
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if (Modifier && !strcmp(Modifier, "arith")) {
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printOperand(MI, opNum, STI, O);
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O << ", ";
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printOperand(MI, opNum + 1, STI, O);
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return;
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}
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const MCOperand &MO = MI->getOperand(opNum + 1);
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if (!MO.isImm() || MO.getImm() != 0) {
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printOperand(MI, opNum + 1, STI, O);
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}
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O << "(";
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printOperand(MI, opNum, STI, O);
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O << ")";
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}
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void VEInstPrinter::printCCOperand(const MCInst *MI, int opNum,
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const MCSubtargetInfo &STI, raw_ostream &O) {
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int CC = (int)MI->getOperand(opNum).getImm();
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O << VECondCodeToString((VECC::CondCodes)CC);
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}

‎llvm/lib/Target/VE/InstPrinter/VEInstPrinter.h

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//===-- VEInstPrinter.h - Convert VE MCInst to assembly syntax ------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This class prints an VE MCInst to a .s file.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_VE_INSTPRINTER_VEINSTPRINTER_H
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#define LLVM_LIB_TARGET_VE_INSTPRINTER_VEINSTPRINTER_H
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#include "llvm/MC/MCInstPrinter.h"
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namespace llvm {
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class VEInstPrinter : public MCInstPrinter {
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public:
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VEInstPrinter(const MCAsmInfo &MAI, const MCInstrInfo &MII,
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const MCRegisterInfo &MRI)
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: MCInstPrinter(MAI, MII, MRI) {}
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void printRegName(raw_ostream &OS, unsigned RegNo) const override;
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void printInst(const MCInst *MI, uint64_t Address, StringRef Annot,
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const MCSubtargetInfo &STI, raw_ostream &OS) override;
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// Autogenerated by tblgen.
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bool printAliasInstr(const MCInst *, const MCSubtargetInfo &, raw_ostream &);
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void printInstruction(const MCInst *, uint64_t, const MCSubtargetInfo &,
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raw_ostream &);
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static const char *getRegisterName(unsigned RegNo);
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void printOperand(const MCInst *MI, int opNum, const MCSubtargetInfo &STI,
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raw_ostream &OS);
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void printMemASXOperand(const MCInst *MI, int opNum,
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const MCSubtargetInfo &STI, raw_ostream &OS,
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const char *Modifier = nullptr);
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void printMemASOperand(const MCInst *MI, int opNum,
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const MCSubtargetInfo &STI, raw_ostream &OS,
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const char *Modifier = nullptr);
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void printCCOperand(const MCInst *MI, int opNum, const MCSubtargetInfo &STI,
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raw_ostream &OS);
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};
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} // namespace llvm
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#endif

‎llvm/lib/Target/VE/LLVMBuild.txt

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;===------------------------------------------------------------------------===;
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[common]
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subdirectories = MCTargetDesc TargetInfo
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subdirectories = InstPrinter MCTargetDesc TargetInfo
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[component_0]
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type = TargetGroup
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name = VE
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parent = Target
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has_asmparser = 0
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has_asmprinter = 0
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has_asmprinter = 1
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[component_1]
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type = Library
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name = VECodeGen
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parent = VE
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required_libraries = Analysis AsmPrinter CodeGen Core MC SelectionDAG
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required_libraries = Analysis AsmPrinter CodeGen Core
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MC SelectionDAG VEAsmPrinter
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VEDesc VEInfo Support Target
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add_to_library_groups = VE

‎llvm/lib/Target/VE/MCTargetDesc/CMakeLists.txt

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add_llvm_library(LLVMVEDesc
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add_llvm_component_library(LLVMVEDesc
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VEMCAsmInfo.cpp
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VEMCTargetDesc.cpp
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VETargetStreamer.cpp
35
)

‎llvm/lib/Target/VE/MCTargetDesc/LLVMBuild.txt

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type = Library
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name = VEDesc
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parent = VE
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required_libraries = MC VEInfo Support
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required_libraries = MC VEAsmPrinter VEInfo Support
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add_to_library_groups = VE

‎llvm/lib/Target/VE/MCTargetDesc/VEMCAsmInfo.cpp

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//===- VEMCAsmInfo.cpp - VE asm properties --------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the declarations of the VEMCAsmInfo properties.
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//
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//===----------------------------------------------------------------------===//
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#include "VEMCAsmInfo.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/BinaryFormat/Dwarf.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/MCTargetOptions.h"
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using namespace llvm;
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void VEELFMCAsmInfo::anchor() {}
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VEELFMCAsmInfo::VEELFMCAsmInfo(const Triple &TheTriple) {
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CodePointerSize = CalleeSaveStackSlotSize = 8;
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MaxInstLength = MinInstAlignment = 8;
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// VE uses ".*byte" directive for unaligned data.
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Data8bitsDirective = "\t.byte\t";
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Data16bitsDirective = "\t.2byte\t";
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Data32bitsDirective = "\t.4byte\t";
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Data64bitsDirective = "\t.8byte\t";
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// Uses '.section' before '.bss' directive. VE requires this although
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// assembler manual says sinple '.bss' is supported.
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UsesELFSectionDirectiveForBSS = true;
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SupportsDebugInformation = true;
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}

‎llvm/lib/Target/VE/MCTargetDesc/VEMCAsmInfo.h

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//===- VEMCAsmInfo.h - VE asm properties -----------------------*- C++ -*--===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
5+
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the declaration of the VEMCAsmInfo class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_VE_MCTARGETDESC_VEMCASMINFO_H
14+
#define LLVM_LIB_TARGET_VE_MCTARGETDESC_VEMCASMINFO_H
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#include "llvm/MC/MCAsmInfoELF.h"
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namespace llvm {
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class Triple;
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class VEELFMCAsmInfo : public MCAsmInfoELF {
23+
void anchor() override;
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public:
26+
explicit VEELFMCAsmInfo(const Triple &TheTriple);
27+
};
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} // namespace llvm
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#endif // LLVM_LIB_TARGET_VE_MCTARGETDESC_VEMCASMINFO_H

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