#include "clang/Basic/AddressSpaces.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/LangOptions.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/ErrorHandling.h"
#include <cctype>
#include <cstdlib>
using namespace clang;
static const LangAS::Map DefaultAddrSpaceMap = { 0 };
TargetInfo::TargetInfo(const std::string &T) : Triple(T) {
BigEndian = true;
TLSSupported = true;
NoAsmVariants = false;
PointerWidth = PointerAlign = 32;
BoolWidth = BoolAlign = 8;
IntWidth = IntAlign = 32;
LongWidth = LongAlign = 32;
LongLongWidth = LongLongAlign = 64;
SuitableAlign = 64;
HalfWidth = 16;
HalfAlign = 16;
FloatWidth = 32;
FloatAlign = 32;
DoubleWidth = 64;
DoubleAlign = 64;
LongDoubleWidth = 64;
LongDoubleAlign = 64;
LargeArrayMinWidth = 0;
LargeArrayAlign = 0;
MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 0;
SizeType = UnsignedLong;
PtrDiffType = SignedLong;
IntMaxType = SignedLongLong;
UIntMaxType = UnsignedLongLong;
IntPtrType = SignedLong;
WCharType = SignedInt;
WIntType = SignedInt;
Char16Type = UnsignedShort;
Char32Type = UnsignedInt;
Int64Type = SignedLongLong;
SigAtomicType = SignedInt;
UseBitFieldTypeAlignment = true;
UseZeroLengthBitfieldAlignment = false;
ZeroLengthBitfieldBoundary = 0;
HalfFormat = &llvm::APFloat::IEEEhalf;
FloatFormat = &llvm::APFloat::IEEEsingle;
DoubleFormat = &llvm::APFloat::IEEEdouble;
LongDoubleFormat = &llvm::APFloat::IEEEdouble;
DescriptionString = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
"i64:64:64-f32:32:32-f64:64:64-n32";
UserLabelPrefix = "_";
MCountName = "mcount";
RegParmMax = 0;
SSERegParmMax = 0;
HasAlignMac68kSupport = false;
RealTypeUsesObjCFPRet = 0;
ComplexLongDoubleUsesFP2Ret = false;
CXXABI = CXXABI_Itanium;
AddrSpaceMap = &DefaultAddrSpaceMap;
PlatformName = "unknown";
PlatformMinVersion = VersionTuple();
}
TargetInfo::~TargetInfo() {}
const char *TargetInfo::getTypeName(IntType T) {
switch (T) {
default: llvm_unreachable("not an integer!");
case SignedShort: return "short";
case UnsignedShort: return "unsigned short";
case SignedInt: return "int";
case UnsignedInt: return "unsigned int";
case SignedLong: return "long int";
case UnsignedLong: return "long unsigned int";
case SignedLongLong: return "long long int";
case UnsignedLongLong: return "long long unsigned int";
}
}
const char *TargetInfo::getTypeConstantSuffix(IntType T) {
switch (T) {
default: llvm_unreachable("not an integer!");
case SignedShort:
case SignedInt: return "";
case SignedLong: return "L";
case SignedLongLong: return "LL";
case UnsignedShort:
case UnsignedInt: return "U";
case UnsignedLong: return "UL";
case UnsignedLongLong: return "ULL";
}
}
unsigned TargetInfo::getTypeWidth(IntType T) const {
switch (T) {
default: llvm_unreachable("not an integer!");
case SignedShort:
case UnsignedShort: return getShortWidth();
case SignedInt:
case UnsignedInt: return getIntWidth();
case SignedLong:
case UnsignedLong: return getLongWidth();
case SignedLongLong:
case UnsignedLongLong: return getLongLongWidth();
};
}
unsigned TargetInfo::getTypeAlign(IntType T) const {
switch (T) {
default: llvm_unreachable("not an integer!");
case SignedShort:
case UnsignedShort: return getShortAlign();
case SignedInt:
case UnsignedInt: return getIntAlign();
case SignedLong:
case UnsignedLong: return getLongAlign();
case SignedLongLong:
case UnsignedLongLong: return getLongLongAlign();
};
}
bool TargetInfo::isTypeSigned(IntType T) {
switch (T) {
default: llvm_unreachable("not an integer!");
case SignedShort:
case SignedInt:
case SignedLong:
case SignedLongLong:
return true;
case UnsignedShort:
case UnsignedInt:
case UnsignedLong:
case UnsignedLongLong:
return false;
};
}
void TargetInfo::setForcedLangOptions(LangOptions &Opts) {
if (Opts.NoBitFieldTypeAlign)
UseBitFieldTypeAlignment = false;
if (Opts.ShortWChar)
WCharType = UnsignedShort;
}
static StringRef removeGCCRegisterPrefix(StringRef Name) {
if (Name[0] == '%' || Name[0] == '#')
Name = Name.substr(1);
return Name;
}
bool TargetInfo::isValidClobber(StringRef Name) const {
return (isValidGCCRegisterName(Name) ||
Name == "memory" || Name == "cc");
}
bool TargetInfo::isValidGCCRegisterName(StringRef Name) const {
if (Name.empty())
return false;
const char * const *Names;
unsigned NumNames;
Name = removeGCCRegisterPrefix(Name);
getGCCRegNames(Names, NumNames);
if (isdigit(Name[0])) {
int n;
if (!Name.getAsInteger(0, n))
return n >= 0 && (unsigned)n < NumNames;
}
for (unsigned i = 0; i < NumNames; i++) {
if (Name == Names[i])
return true;
}
const AddlRegName *AddlNames;
unsigned NumAddlNames;
getGCCAddlRegNames(AddlNames, NumAddlNames);
for (unsigned i = 0; i < NumAddlNames; i++)
for (unsigned j = 0; j < llvm::array_lengthof(AddlNames[i].Names); j++) {
if (!AddlNames[i].Names[j])
break;
if (AddlNames[i].Names[j] == Name && AddlNames[i].RegNum < NumNames)
return true;
}
const GCCRegAlias *Aliases;
unsigned NumAliases;
getGCCRegAliases(Aliases, NumAliases);
for (unsigned i = 0; i < NumAliases; i++) {
for (unsigned j = 0 ; j < llvm::array_lengthof(Aliases[i].Aliases); j++) {
if (!Aliases[i].Aliases[j])
break;
if (Aliases[i].Aliases[j] == Name)
return true;
}
}
return false;
}
StringRef
TargetInfo::getNormalizedGCCRegisterName(StringRef Name) const {
assert(isValidGCCRegisterName(Name) && "Invalid register passed in");
Name = removeGCCRegisterPrefix(Name);
const char * const *Names;
unsigned NumNames;
getGCCRegNames(Names, NumNames);
if (isdigit(Name[0])) {
int n;
if (!Name.getAsInteger(0, n)) {
assert(n >= 0 && (unsigned)n < NumNames &&
"Out of bounds register number!");
return Names[n];
}
}
const AddlRegName *AddlNames;
unsigned NumAddlNames;
getGCCAddlRegNames(AddlNames, NumAddlNames);
for (unsigned i = 0; i < NumAddlNames; i++)
for (unsigned j = 0; j < llvm::array_lengthof(AddlNames[i].Names); j++) {
if (!AddlNames[i].Names[j])
break;
if (AddlNames[i].Names[j] == Name && AddlNames[i].RegNum < NumNames)
return Name;
}
const GCCRegAlias *Aliases;
unsigned NumAliases;
getGCCRegAliases(Aliases, NumAliases);
for (unsigned i = 0; i < NumAliases; i++) {
for (unsigned j = 0 ; j < llvm::array_lengthof(Aliases[i].Aliases); j++) {
if (!Aliases[i].Aliases[j])
break;
if (Aliases[i].Aliases[j] == Name)
return Aliases[i].Register;
}
}
return Name;
}
bool TargetInfo::validateOutputConstraint(ConstraintInfo &Info) const {
const char *Name = Info.getConstraintStr().c_str();
if (*Name != '=' && *Name != '+')
return false;
if (*Name == '+')
Info.setIsReadWrite();
Name++;
while (*Name) {
switch (*Name) {
default:
if (!validateAsmConstraint(Name, Info)) {
return false;
}
case '&': break;
case '%': break;
case 'r': Info.setAllowsRegister();
break;
case 'm': case 'o': case 'V': case '<': case '>': Info.setAllowsMemory();
break;
case 'g': case 'X': Info.setAllowsRegister();
Info.setAllowsMemory();
break;
case ',': if (Name[1] == '=' || Name[1] == '+')
Name++;
break;
case '?': case '!': break; }
Name++;
}
return true;
}
bool TargetInfo::resolveSymbolicName(const char *&Name,
ConstraintInfo *OutputConstraints,
unsigned NumOutputs,
unsigned &Index) const {
assert(*Name == '[' && "Symbolic name did not start with '['");
Name++;
const char *Start = Name;
while (*Name && *Name != ']')
Name++;
if (!*Name) {
return false;
}
std::string SymbolicName(Start, Name - Start);
for (Index = 0; Index != NumOutputs; ++Index)
if (SymbolicName == OutputConstraints[Index].getName())
return true;
return false;
}
bool TargetInfo::validateInputConstraint(ConstraintInfo *OutputConstraints,
unsigned NumOutputs,
ConstraintInfo &Info) const {
const char *Name = Info.ConstraintStr.c_str();
while (*Name) {
switch (*Name) {
default:
if (*Name >= '0' && *Name <= '9') {
unsigned i = *Name - '0';
if (i >= NumOutputs)
return false;
if (OutputConstraints[i].isReadWrite())
return false;
if (Info.hasTiedOperand() && Info.getTiedOperand() != i)
return false;
Info.setTiedOperand(i, OutputConstraints[i]);
} else if (!validateAsmConstraint(Name, Info)) {
return false;
}
break;
case '[': {
unsigned Index = 0;
if (!resolveSymbolicName(Name, OutputConstraints, NumOutputs, Index))
return false;
if (Info.hasTiedOperand() && Info.getTiedOperand() != Index)
return false;
Info.setTiedOperand(Index, OutputConstraints[Index]);
break;
}
case '%': break;
case 'i': case 'n': break;
case 'I': case 'J':
case 'K':
case 'L':
case 'M':
case 'N':
case 'O':
case 'P':
break;
case 'r': Info.setAllowsRegister();
break;
case 'm': case 'o': case 'V': case '<': case '>': Info.setAllowsMemory();
break;
case 'g': case 'X': Info.setAllowsRegister();
Info.setAllowsMemory();
break;
case 'E': case 'F': case 'p': break;
case ',': break;
case '?': case '!': break; }
Name++;
}
return true;
}