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//===--- Builtins.cpp - Builtin function implementation -------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements various things for builtin functions.
//
//===----------------------------------------------------------------------===//
#include "clang/Basic/Builtins.h"
#include "clang/Basic/IdentifierTable.h"
#include "clang/Basic/TargetInfo.h"
using namespace clang;
static const Builtin::Info BuiltinInfo[] = {
{ "not a builtin function", 0, 0, 0, false },
#define BUILTIN(ID, TYPE, ATTRS) { #ID, TYPE, ATTRS, 0, false },
#define LIBBUILTIN(ID, TYPE, ATTRS, HEADER) { #ID, TYPE, ATTRS, HEADER, false },
#include "clang/Basic/Builtins.def"
};
const Builtin::Info &Builtin::Context::GetRecord(unsigned ID) const {
if (ID < Builtin::FirstTSBuiltin)
return BuiltinInfo[ID];
assert(ID - Builtin::FirstTSBuiltin < NumTSRecords && "Invalid builtin ID!");
return TSRecords[ID - Builtin::FirstTSBuiltin];
}
Builtin::Context::Context(const TargetInfo &Target) {
// Get the target specific builtins from the target.
TSRecords = 0;
NumTSRecords = 0;
Target.getTargetBuiltins(TSRecords, NumTSRecords);
}
/// InitializeBuiltins - Mark the identifiers for all the builtins with their
/// appropriate builtin ID # and mark any non-portable builtin identifiers as
/// such.
void Builtin::Context::InitializeBuiltins(IdentifierTable &Table,
bool NoBuiltins) {
// Step #1: mark all target-independent builtins with their ID's.
for (unsigned i = Builtin::NotBuiltin+1; i != Builtin::FirstTSBuiltin; ++i)
if (!BuiltinInfo[i].Suppressed &&
(!NoBuiltins || !strchr(BuiltinInfo[i].Attributes, 'f')))
Table.get(BuiltinInfo[i].Name).setBuiltinID(i);
// Step #2: Register target-specific builtins.
for (unsigned i = 0, e = NumTSRecords; i != e; ++i)
if (!TSRecords[i].Suppressed &&
(!NoBuiltins ||
(TSRecords[i].Attributes &&
!strchr(TSRecords[i].Attributes, 'f'))))
Table.get(TSRecords[i].Name).setBuiltinID(i+Builtin::FirstTSBuiltin);
}
void
Builtin::Context::GetBuiltinNames(llvm::SmallVectorImpl<const char *> &Names,
bool NoBuiltins) {
// Final all target-independent names
for (unsigned i = Builtin::NotBuiltin+1; i != Builtin::FirstTSBuiltin; ++i)
if (!BuiltinInfo[i].Suppressed &&
(!NoBuiltins || !strchr(BuiltinInfo[i].Attributes, 'f')))
Names.push_back(BuiltinInfo[i].Name);
// Find target-specific names.
for (unsigned i = 0, e = NumTSRecords; i != e; ++i)
if (!TSRecords[i].Suppressed &&
(!NoBuiltins ||
(TSRecords[i].Attributes &&
!strchr(TSRecords[i].Attributes, 'f'))))
Names.push_back(TSRecords[i].Name);
}
bool
Builtin::Context::isPrintfLike(unsigned ID, unsigned &FormatIdx,
bool &HasVAListArg) {
const char *Printf = strpbrk(GetRecord(ID).Attributes, "pP");
if (!Printf)
return false;
HasVAListArg = (*Printf == 'P');
++Printf;
assert(*Printf == ':' && "p or P specifier must have be followed by a ':'");
++Printf;
assert(strchr(Printf, ':') && "printf specifier must end with a ':'");
FormatIdx = strtol(Printf, 0, 10);
return true;
}
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