maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/clang/lib/Basic/Targets/PPC.h

370 lines
12 KiB
C++
Raw Blame History

//===--- PPC.h - Declare PPC target feature support -------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares PPC TargetInfo objects.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LIB_BASIC_TARGETS_PPC_H
#define LLVM_CLANG_LIB_BASIC_TARGETS_PPC_H
#include "OSTargets.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/TargetOptions.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Support/Compiler.h"
namespace clang {
namespace targets {
// PPC abstract base class
class LLVM_LIBRARY_VISIBILITY PPCTargetInfo : public TargetInfo {
static const Builtin::Info BuiltinInfo[];
static const char *const GCCRegNames[];
static const TargetInfo::GCCRegAlias GCCRegAliases[];
std::string CPU;
// Target cpu features.
bool HasAltivec;
bool HasVSX;
bool HasP8Vector;
bool HasP8Crypto;
bool HasDirectMove;
bool HasQPX;
bool HasHTM;
bool HasBPERMD;
bool HasExtDiv;
bool HasP9Vector;
protected:
std::string ABI;
public:
PPCTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
: TargetInfo(Triple), HasAltivec(false), HasVSX(false),
HasP8Vector(false), HasP8Crypto(false), HasDirectMove(false),
HasQPX(false), HasHTM(false), HasBPERMD(false), HasExtDiv(false),
HasP9Vector(false) {
SuitableAlign = 128;
SimdDefaultAlign = 128;
LongDoubleWidth = LongDoubleAlign = 128;
LongDoubleFormat = &llvm::APFloat::PPCDoubleDouble();
}
/// \brief Flags for architecture specific defines.
typedef enum {
ArchDefineNone = 0,
ArchDefineName = 1 << 0, // <name> is substituted for arch name.
ArchDefinePpcgr = 1 << 1,
ArchDefinePpcsq = 1 << 2,
ArchDefine440 = 1 << 3,
ArchDefine603 = 1 << 4,
ArchDefine604 = 1 << 5,
ArchDefinePwr4 = 1 << 6,
ArchDefinePwr5 = 1 << 7,
ArchDefinePwr5x = 1 << 8,
ArchDefinePwr6 = 1 << 9,
ArchDefinePwr6x = 1 << 10,
ArchDefinePwr7 = 1 << 11,
ArchDefinePwr8 = 1 << 12,
ArchDefinePwr9 = 1 << 13,
ArchDefineA2 = 1 << 14,
ArchDefineA2q = 1 << 15
} ArchDefineTypes;
// Set the language option for altivec based on our value.
void adjust(LangOptions &Opts) override;
// Note: GCC recognizes the following additional cpus:
// 401, 403, 405, 405fp, 440fp, 464, 464fp, 476, 476fp, 505, 740, 801,
// 821, 823, 8540, 8548, e300c2, e300c3, e500mc64, e6500, 860, cell,
// titan, rs64.
bool isValidCPUName(StringRef Name) const override;
void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override;
bool setCPU(const std::string &Name) override {
bool CPUKnown = isValidCPUName(Name);
if (CPUKnown)
CPU = Name;
return CPUKnown;
}
StringRef getABI() const override { return ABI; }
ArrayRef<Builtin::Info> getTargetBuiltins() const override;
bool isCLZForZeroUndef() const override { return false; }
void getTargetDefines(const LangOptions &Opts,
MacroBuilder &Builder) const override;
bool
initFeatureMap(llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags,
StringRef CPU,
const std::vector<std::string> &FeaturesVec) const override;
bool handleTargetFeatures(std::vector<std::string> &Features,
DiagnosticsEngine &Diags) override;
bool hasFeature(StringRef Feature) const override;
void setFeatureEnabled(llvm::StringMap<bool> &Features, StringRef Name,
bool Enabled) const override;
ArrayRef<const char *> getGCCRegNames() const override;
ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override;
bool validateAsmConstraint(const char *&Name,
TargetInfo::ConstraintInfo &Info) const override {
switch (*Name) {
default:
return false;
case 'O': // Zero
break;
case 'b': // Base register
case 'f': // Floating point register
Info.setAllowsRegister();
break;
// FIXME: The following are added to allow parsing.
// I just took a guess at what the actions should be.
// Also, is more specific checking needed? I.e. specific registers?
case 'd': // Floating point register (containing 64-bit value)
case 'v': // Altivec vector register
Info.setAllowsRegister();
break;
case 'w':
switch (Name[1]) {
case 'd': // VSX vector register to hold vector double data
case 'f': // VSX vector register to hold vector float data
case 's': // VSX vector register to hold scalar float data
case 'a': // Any VSX register
case 'c': // An individual CR bit
break;
default:
return false;
}
Info.setAllowsRegister();
Name++; // Skip over 'w'.
break;
case 'h': // `MQ', `CTR', or `LINK' register
case 'q': // `MQ' register
case 'c': // `CTR' register
case 'l': // `LINK' register
case 'x': // `CR' register (condition register) number 0
case 'y': // `CR' register (condition register)
case 'z': // `XER[CA]' carry bit (part of the XER register)
Info.setAllowsRegister();
break;
case 'I': // Signed 16-bit constant
case 'J': // Unsigned 16-bit constant shifted left 16 bits
// (use `L' instead for SImode constants)
case 'K': // Unsigned 16-bit constant
case 'L': // Signed 16-bit constant shifted left 16 bits
case 'M': // Constant larger than 31
case 'N': // Exact power of 2
case 'P': // Constant whose negation is a signed 16-bit constant
case 'G': // Floating point constant that can be loaded into a
// register with one instruction per word
case 'H': // Integer/Floating point constant that can be loaded
// into a register using three instructions
break;
case 'm': // Memory operand. Note that on PowerPC targets, m can
// include addresses that update the base register. It
// is therefore only safe to use `m' in an asm statement
// if that asm statement accesses the operand exactly once.
// The asm statement must also use `%U<opno>' as a
// placeholder for the "update" flag in the corresponding
// load or store instruction. For example:
// asm ("st%U0 %1,%0" : "=m" (mem) : "r" (val));
// is correct but:
// asm ("st %1,%0" : "=m" (mem) : "r" (val));
// is not. Use es rather than m if you don't want the base
// register to be updated.
case 'e':
if (Name[1] != 's')
return false;
// es: A "stable" memory operand; that is, one which does not
// include any automodification of the base register. Unlike
// `m', this constraint can be used in asm statements that
// might access the operand several times, or that might not
// access it at all.
Info.setAllowsMemory();
Name++; // Skip over 'e'.
break;
case 'Q': // Memory operand that is an offset from a register (it is
// usually better to use `m' or `es' in asm statements)
case 'Z': // Memory operand that is an indexed or indirect from a
// register (it is usually better to use `m' or `es' in
// asm statements)
Info.setAllowsMemory();
Info.setAllowsRegister();
break;
case 'R': // AIX TOC entry
case 'a': // Address operand that is an indexed or indirect from a
// register (`p' is preferable for asm statements)
case 'S': // Constant suitable as a 64-bit mask operand
case 'T': // Constant suitable as a 32-bit mask operand
case 'U': // System V Release 4 small data area reference
case 't': // AND masks that can be performed by two rldic{l, r}
// instructions
case 'W': // Vector constant that does not require memory
case 'j': // Vector constant that is all zeros.
break;
// End FIXME.
}
return true;
}
std::string convertConstraint(const char *&Constraint) const override {
std::string R;
switch (*Constraint) {
case 'e':
case 'w':
// Two-character constraint; add "^" hint for later parsing.
R = std::string("^") + std::string(Constraint, 2);
Constraint++;
break;
default:
return TargetInfo::convertConstraint(Constraint);
}
return R;
}
const char *getClobbers() const override { return ""; }
int getEHDataRegisterNumber(unsigned RegNo) const override {
if (RegNo == 0)
return 3;
if (RegNo == 1)
return 4;
return -1;
}
bool hasSjLjLowering() const override { return true; }
bool useFloat128ManglingForLongDouble() const override {
return LongDoubleWidth == 128 &&
LongDoubleFormat == &llvm::APFloat::PPCDoubleDouble() &&
getTriple().isOSBinFormatELF();
}
};
class LLVM_LIBRARY_VISIBILITY PPC32TargetInfo : public PPCTargetInfo {
public:
PPC32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
: PPCTargetInfo(Triple, Opts) {
resetDataLayout("E-m:e-p:32:32-i64:64-n32");
switch (getTriple().getOS()) {
case llvm::Triple::Linux:
case llvm::Triple::FreeBSD:
case llvm::Triple::NetBSD:
SizeType = UnsignedInt;
PtrDiffType = SignedInt;
IntPtrType = SignedInt;
break;
default:
break;
}
if (getTriple().getOS() == llvm::Triple::FreeBSD) {
LongDoubleWidth = LongDoubleAlign = 64;
LongDoubleFormat = &llvm::APFloat::IEEEdouble();
}
// PPC32 supports atomics up to 4 bytes.
MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 32;
}
BuiltinVaListKind getBuiltinVaListKind() const override {
// This is the ELF definition, and is overridden by the Darwin sub-target
return TargetInfo::PowerABIBuiltinVaList;
}
};
// Note: ABI differences may eventually require us to have a separate
// TargetInfo for little endian.
class LLVM_LIBRARY_VISIBILITY PPC64TargetInfo : public PPCTargetInfo {
public:
PPC64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
: PPCTargetInfo(Triple, Opts) {
LongWidth = LongAlign = PointerWidth = PointerAlign = 64;
IntMaxType = SignedLong;
Int64Type = SignedLong;
if ((Triple.getArch() == llvm::Triple::ppc64le)) {
resetDataLayout("e-m:e-i64:64-n32:64");
ABI = "elfv2";
} else {
resetDataLayout("E-m:e-i64:64-n32:64");
ABI = "elfv1";
}
switch (getTriple().getOS()) {
case llvm::Triple::FreeBSD:
LongDoubleWidth = LongDoubleAlign = 64;
LongDoubleFormat = &llvm::APFloat::IEEEdouble();
break;
case llvm::Triple::NetBSD:
IntMaxType = SignedLongLong;
Int64Type = SignedLongLong;
break;
default:
break;
}
// PPC64 supports atomics up to 8 bytes.
MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
}
BuiltinVaListKind getBuiltinVaListKind() const override {
return TargetInfo::CharPtrBuiltinVaList;
}
// PPC64 Linux-specific ABI options.
bool setABI(const std::string &Name) override {
if (Name == "elfv1" || Name == "elfv1-qpx" || Name == "elfv2") {
ABI = Name;
return true;
}
return false;
}
};
class LLVM_LIBRARY_VISIBILITY DarwinPPC32TargetInfo
: public DarwinTargetInfo<PPC32TargetInfo> {
public:
DarwinPPC32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
: DarwinTargetInfo<PPC32TargetInfo>(Triple, Opts) {
HasAlignMac68kSupport = true;
BoolWidth = BoolAlign = 32; // XXX support -mone-byte-bool?
PtrDiffType = SignedInt; // for http://llvm.org/bugs/show_bug.cgi?id=15726
LongLongAlign = 32;
resetDataLayout("E-m:o-p:32:32-f64:32:64-n32");
}
BuiltinVaListKind getBuiltinVaListKind() const override {
return TargetInfo::CharPtrBuiltinVaList;
}
};
class LLVM_LIBRARY_VISIBILITY DarwinPPC64TargetInfo
: public DarwinTargetInfo<PPC64TargetInfo> {
public:
DarwinPPC64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
: DarwinTargetInfo<PPC64TargetInfo>(Triple, Opts) {
HasAlignMac68kSupport = true;
resetDataLayout("E-m:o-i64:64-n32:64");
}
};
} // namespace targets
} // namespace clang
#endif // LLVM_CLANG_LIB_BASIC_TARGETS_PPC_H
Reference in New Issue View Git Blame Copy Permalink