blob: d90e7f75e19a8fd91cb08d32eb76a9d751c6f2ef [file] [log] [blame]
//===- subzero/src/IceGlobalInits.cpp - Global declarations ---------------===//
//
// The Subzero Code Generator
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief Implements the notion of function declarations, global variable
/// declarations, and the corresponding variable initializers in Subzero.
///
//===----------------------------------------------------------------------===//
#include "IceGlobalInits.h"
#include "IceDefs.h"
#include "IceGlobalContext.h"
#include "IceTypes.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Value.h"
namespace {
char hexdigit(unsigned X) { return X < 10 ? '0' + X : 'A' + X - 10; }
void dumpLinkage(Ice::Ostream &Stream,
llvm::GlobalValue::LinkageTypes Linkage) {
if (!Ice::BuildDefs::dump())
return;
switch (Linkage) {
case llvm::GlobalValue::ExternalLinkage:
Stream << "external";
return;
case llvm::GlobalValue::InternalLinkage:
Stream << "internal";
return;
default:
break;
}
std::string Buffer;
llvm::raw_string_ostream StrBuf(Buffer);
StrBuf << "Unknown linkage value: " << Linkage;
llvm::report_fatal_error(StrBuf.str());
}
void dumpCallingConv(Ice::Ostream &, llvm::CallingConv::ID CallingConv) {
if (!Ice::BuildDefs::dump())
return;
if (CallingConv == llvm::CallingConv::C)
return;
std::string Buffer;
llvm::raw_string_ostream StrBuf(Buffer);
StrBuf << "Unknown calling convention: " << CallingConv;
llvm::report_fatal_error(StrBuf.str());
}
} // end of anonymous namespace
namespace Ice {
bool FunctionDeclaration::validateTypeSignature() const {
for (SizeT i = 0; i < Signature.getNumArgs(); ++i) {
if (!isCallParameterType(Signature.getArgType(i)))
return false;
}
return isCallReturnType(Signature.getReturnType());
}
std::string
FunctionDeclaration::getTypeSignatureError(const GlobalContext *Ctx) {
std::string Buffer;
llvm::raw_string_ostream StrBuf(Buffer);
StrBuf << "Invalid type signature for";
StrBuf << " " << getName() << ": " << getSignature();
return StrBuf.str();
}
void FunctionDeclaration::dumpType(Ostream &Stream) const {
if (!Ice::BuildDefs::dump())
return;
Stream << Signature;
}
void FunctionDeclaration::dump(Ostream &Stream) const {
if (!Ice::BuildDefs::dump())
return;
if (IsProto)
Stream << "declare ";
::dumpLinkage(Stream, Linkage);
::dumpCallingConv(Stream, CallingConv);
Stream << Signature.getReturnType() << " @" << Name << "(";
bool IsFirst = true;
for (Type ArgTy : Signature.getArgList()) {
if (IsFirst)
IsFirst = false;
else
Stream << ", ";
Stream << ArgTy;
}
Stream << ")";
}
void VariableDeclaration::dumpType(Ostream &Stream) const {
if (!Ice::BuildDefs::dump())
return;
if (Initializers.size() == 1) {
Initializers.front()->dumpType(Stream);
} else {
Stream << "<{ ";
bool IsFirst = true;
for (const auto *Init : Initializers) {
if (IsFirst) {
IsFirst = false;
} else {
Stream << ", ";
}
Init->dumpType(Stream);
}
Stream << " }>";
}
}
void VariableDeclaration::dump(Ostream &Stream) const {
if (!Ice::BuildDefs::dump())
return;
Stream << "@" << Name << " = ";
::dumpLinkage(Stream, Linkage);
Stream << " " << (IsConstant ? "constant" : "global") << " ";
// Add initializer.
if (Initializers.size() == 1) {
Initializers.front()->dump(Stream);
} else {
dumpType(Stream);
Stream << " <{ ";
bool IsFirst = true;
for (const auto *Init : Initializers) {
if (IsFirst) {
IsFirst = false;
} else {
Stream << ", ";
}
Init->dump(Stream);
}
Stream << " }>";
}
// Add alignment.
if (Alignment > 0)
Stream << ", align " << Alignment;
Stream << "\n";
}
void VariableDeclaration::Initializer::dumpType(Ostream &Stream) const {
if (!Ice::BuildDefs::dump())
return;
Stream << "[" << getNumBytes() << " x " << Ice::IceType_i8 << "]";
}
void VariableDeclaration::DataInitializer::dump(Ostream &Stream) const {
if (!Ice::BuildDefs::dump())
return;
dumpType(Stream);
Stream << " c\"";
// Code taken from PrintEscapedString() in AsmWriter.cpp. Keep the strings in
// the same format as the .ll file for practical diffing.
for (SizeT i = 0; i < ContentsSize; ++i) {
uint8_t C = Contents[i];
if (isprint(C) && C != '\\' && C != '"')
Stream << C;
else
Stream << '\\' << hexdigit(C >> 4) << hexdigit(C & 0x0F);
}
Stream << "\"";
}
void VariableDeclaration::ZeroInitializer::dump(Ostream &Stream) const {
if (!Ice::BuildDefs::dump())
return;
dumpType(Stream);
Stream << " zeroinitializer";
}
void VariableDeclaration::RelocInitializer::dumpType(Ostream &Stream) const {
if (!Ice::BuildDefs::dump())
return;
Stream << Ice::IceType_i32;
}
void VariableDeclaration::RelocInitializer::dump(Ostream &Stream) const {
if (!Ice::BuildDefs::dump())
return;
const RelocOffsetT Offset = getOffset();
if (Offset != 0) {
dumpType(Stream);
Stream << " add (";
}
dumpType(Stream);
Stream << " ptrtoint (";
Declaration->dumpType(Stream);
Stream << "* @" << Declaration->getName() << " to ";
dumpType(Stream);
Stream << ")";
if (Offset != 0) {
Stream << ", ";
dumpType(Stream);
Stream << " " << Offset << ")";
}
}
} // end of namespace Ice