mirror of
https://github.com/c64scene-ar/llvm-6502.git
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into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
316 lines
10 KiB
C++
316 lines
10 KiB
C++
//===-- NVPTXAsmPrinter.h - NVPTX LLVM assembly writer --------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains a printer that converts from our internal representation
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// of machine-dependent LLVM code to NVPTX assembly language.
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//
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//===----------------------------------------------------------------------===//
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#ifndef NVPTXASMPRINTER_H
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#define NVPTXASMPRINTER_H
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#include "NVPTX.h"
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#include "NVPTXSubtarget.h"
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#include "NVPTXTargetMachine.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/IR/Function.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/FormattedStream.h"
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#include "llvm/Target/Mangler.h"
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#include "llvm/Target/TargetMachine.h"
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#include <fstream>
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// The ptx syntax and format is very different from that usually seem in a .s
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// file,
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// therefore we are not able to use the MCAsmStreamer interface here.
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//
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// We are handcrafting the output method here.
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//
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// A better approach is to clone the MCAsmStreamer to a MCPTXAsmStreamer
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// (subclass of MCStreamer).
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// This is defined in AsmPrinter.cpp.
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// Used to process the constant expressions in initializers.
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namespace nvptx {
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const llvm::MCExpr *LowerConstant(const llvm::Constant *CV,
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llvm::AsmPrinter &AP) ;
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}
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namespace llvm {
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class LineReader {
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private:
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unsigned theCurLine ;
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std::ifstream fstr;
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char buff[512];
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std::string theFileName;
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SmallVector<unsigned, 32> lineOffset;
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public:
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LineReader(std::string filename) {
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theCurLine = 0;
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fstr.open(filename.c_str());
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theFileName = filename;
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}
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std::string fileName() { return theFileName; }
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~LineReader() {
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fstr.close();
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}
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std::string readLine(unsigned line);
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};
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class LLVM_LIBRARY_VISIBILITY NVPTXAsmPrinter : public AsmPrinter {
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class AggBuffer {
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// Used to buffer the emitted string for initializing global
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// aggregates.
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//
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// Normally an aggregate (array, vector or structure) is emitted
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// as a u8[]. However, if one element/field of the aggregate
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// is a non-NULL address, then the aggregate is emitted as u32[]
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// or u64[].
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//
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// We first layout the aggregate in 'buffer' in bytes, except for
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// those symbol addresses. For the i-th symbol address in the
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//aggregate, its corresponding 4-byte or 8-byte elements in 'buffer'
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// are filled with 0s. symbolPosInBuffer[i-1] records its position
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// in 'buffer', and Symbols[i-1] records the Value*.
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//
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// Once we have this AggBuffer setup, we can choose how to print
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// it out.
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public:
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unsigned size; // size of the buffer in bytes
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unsigned char *buffer; // the buffer
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unsigned numSymbols; // number of symbol addresses
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SmallVector<unsigned, 4> symbolPosInBuffer;
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SmallVector<Value *, 4> Symbols;
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private:
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unsigned curpos;
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raw_ostream &O;
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NVPTXAsmPrinter &AP;
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public:
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AggBuffer(unsigned _size, raw_ostream &_O, NVPTXAsmPrinter &_AP)
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:O(_O),AP(_AP) {
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buffer = new unsigned char[_size];
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size = _size;
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curpos = 0;
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numSymbols = 0;
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}
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~AggBuffer() {
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delete [] buffer;
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}
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unsigned addBytes(unsigned char *Ptr, int Num, int Bytes) {
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assert((curpos+Num) <= size);
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assert((curpos+Bytes) <= size);
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for ( int i= 0; i < Num; ++i) {
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buffer[curpos] = Ptr[i];
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curpos ++;
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}
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for ( int i=Num; i < Bytes ; ++i) {
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buffer[curpos] = 0;
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curpos ++;
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}
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return curpos;
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}
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unsigned addZeros(int Num) {
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assert((curpos+Num) <= size);
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for ( int i= 0; i < Num; ++i) {
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buffer[curpos] = 0;
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curpos ++;
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}
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return curpos;
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}
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void addSymbol(Value *GVar) {
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symbolPosInBuffer.push_back(curpos);
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Symbols.push_back(GVar);
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numSymbols++;
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}
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void print() {
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if (numSymbols == 0) {
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// print out in bytes
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for (unsigned i=0; i<size; i++) {
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if (i)
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O << ", ";
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O << (unsigned int)buffer[i];
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}
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} else {
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// print out in 4-bytes or 8-bytes
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unsigned int pos = 0;
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unsigned int nSym = 0;
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unsigned int nextSymbolPos = symbolPosInBuffer[nSym];
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unsigned int nBytes = 4;
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if (AP.nvptxSubtarget.is64Bit())
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nBytes = 8;
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for (pos=0; pos<size; pos+=nBytes) {
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if (pos)
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O << ", ";
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if (pos == nextSymbolPos) {
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Value *v = Symbols[nSym];
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if (GlobalValue *GVar = dyn_cast<GlobalValue>(v)) {
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MCSymbol *Name = AP.Mang->getSymbol(GVar);
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O << *Name;
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}
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else if (ConstantExpr *Cexpr =
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dyn_cast<ConstantExpr>(v)) {
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O << *nvptx::LowerConstant(Cexpr, AP);
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} else
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llvm_unreachable("symbol type unknown");
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nSym++;
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if (nSym >= numSymbols)
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nextSymbolPos = size+1;
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else
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nextSymbolPos = symbolPosInBuffer[nSym];
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} else
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if (nBytes == 4)
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O << *(unsigned int*)(buffer+pos);
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else
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O << *(unsigned long long*)(buffer+pos);
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}
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}
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}
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};
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friend class AggBuffer;
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virtual void emitSrcInText(StringRef filename, unsigned line);
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private :
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virtual const char *getPassName() const {
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return "NVPTX Assembly Printer";
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}
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const Function *F;
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std::string CurrentFnName;
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void EmitFunctionEntryLabel();
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void EmitFunctionBodyStart();
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void EmitFunctionBodyEnd();
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void EmitInstruction(const MachineInstr *);
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void EmitAlignment(unsigned NumBits, const GlobalValue *GV = 0) const {}
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void printGlobalVariable(const GlobalVariable *GVar);
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void printOperand(const MachineInstr *MI, int opNum, raw_ostream &O,
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const char *Modifier=0);
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void printLdStCode(const MachineInstr *MI, int opNum, raw_ostream &O,
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const char *Modifier=0);
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void printVecModifiedImmediate(const MachineOperand &MO,
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const char *Modifier, raw_ostream &O);
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void printMemOperand(const MachineInstr *MI, int opNum, raw_ostream &O,
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const char *Modifier=0);
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void printImplicitDef(const MachineInstr *MI, raw_ostream &O) const;
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// definition autogenerated.
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void printInstruction(const MachineInstr *MI, raw_ostream &O);
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void printModuleLevelGV(GlobalVariable* GVar, raw_ostream &O,
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bool=false);
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void printParamName(int paramIndex, raw_ostream &O);
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void printParamName(Function::const_arg_iterator I, int paramIndex,
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raw_ostream &O);
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void emitHeader(Module &M, raw_ostream &O);
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void emitKernelFunctionDirectives(const Function& F,
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raw_ostream &O) const;
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void emitVirtualRegister(unsigned int vr, bool isVec, raw_ostream &O);
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void emitFunctionExternParamList(const MachineFunction &MF);
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void emitFunctionParamList(const Function *, raw_ostream &O);
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void emitFunctionParamList(const MachineFunction &MF, raw_ostream &O);
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void setAndEmitFunctionVirtualRegisters(const MachineFunction &MF);
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void emitFunctionTempData(const MachineFunction &MF,
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unsigned &FrameSize);
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bool isImageType(const Type *Ty);
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bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &);
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bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &);
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void printReturnValStr(const Function *, raw_ostream &O);
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void printReturnValStr(const MachineFunction &MF, raw_ostream &O);
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protected:
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bool doInitialization(Module &M);
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bool doFinalization(Module &M);
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private:
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std::string CurrentBankselLabelInBasicBlock;
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// This is specific per MachineFunction.
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const MachineRegisterInfo *MRI;
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// The contents are specific for each
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// MachineFunction. But the size of the
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// array is not.
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std::map<unsigned, unsigned> *VRidGlobal2LocalMap;
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// cache the subtarget here.
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const NVPTXSubtarget &nvptxSubtarget;
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// Build the map between type name and ID based on module's type
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// symbol table.
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std::map<const Type *, std::string> TypeNameMap;
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// List of variables demoted to a function scope.
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std::map<const Function *, std::vector<GlobalVariable *> > localDecls;
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// To record filename to ID mapping
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std::map<std::string, unsigned> filenameMap;
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void recordAndEmitFilenames(Module &);
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void emitPTXGlobalVariable(const GlobalVariable *GVar, raw_ostream &O);
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void emitPTXAddressSpace(unsigned int AddressSpace,
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raw_ostream &O) const;
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std::string getPTXFundamentalTypeStr(const Type *Ty, bool=true) const ;
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void printScalarConstant(Constant *CPV, raw_ostream &O) ;
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void printFPConstant(const ConstantFP *Fp, raw_ostream &O) ;
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void bufferLEByte(Constant *CPV, int Bytes, AggBuffer *aggBuffer) ;
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void bufferAggregateConstant(Constant *CV, AggBuffer *aggBuffer) ;
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void printOperandProper(const MachineOperand &MO);
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void emitLinkageDirective(const GlobalValue* V, raw_ostream &O);
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void emitDeclarations(Module &, raw_ostream &O);
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void emitDeclaration(const Function *, raw_ostream &O);
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static const char *getRegisterName(unsigned RegNo);
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void emitDemotedVars(const Function *, raw_ostream &);
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LineReader *reader;
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LineReader *getReader(std::string);
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public:
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NVPTXAsmPrinter(TargetMachine &TM,
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MCStreamer &Streamer)
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: AsmPrinter(TM, Streamer),
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nvptxSubtarget(TM.getSubtarget<NVPTXSubtarget>()) {
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CurrentBankselLabelInBasicBlock = "";
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VRidGlobal2LocalMap = NULL;
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reader = NULL;
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}
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~NVPTXAsmPrinter() {
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if (!reader)
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delete reader;
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}
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bool ignoreLoc(const MachineInstr &);
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virtual void getVirtualRegisterName(unsigned, bool, raw_ostream &);
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DebugLoc prevDebugLoc;
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void emitLineNumberAsDotLoc(const MachineInstr &);
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};
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} // end of namespace
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#endif
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