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SveEmitter.cpp
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//===-- SveEmitter.cpp - Generate arm_sve.h for use with clang ------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This tablegen backend is responsible for emitting arm_sve.h, which includes
// a declaration and definition of each function specified by the ARM C/C++
// Language Extensions (ACLE).
//
// For details, visit:
// https://developer.arm.com/architectures/system-architectures/software-standards/acle
//
// Each SVE instruction is implemented in terms of 1 or more functions which
// are suffixed with the element type of the input vectors. Functions may be
// implemented in terms of generic vector operations such as +, *, -, etc. or
// by calling a __builtin_-prefixed function which will be handled by clang's
// CodeGen library.
//
// See also the documentation in include/clang/Basic/arm_sve.td.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/TableGen/AArch64ImmCheck.h"
#include "llvm/TableGen/Error.h"
#include "llvm/TableGen/Record.h"
#include "llvm/TableGen/StringToOffsetTable.h"
#include <array>
#include <cctype>
#include <set>
#include <string>
#include <tuple>
using namespace llvm;
enum ClassKind {
ClassNone,
ClassS, // signed/unsigned, e.g., "_s8", "_u8" suffix
ClassG, // Overloaded name without type suffix
};
enum class ACLEKind { SVE, SME };
using TypeSpec = std::string;
namespace {
class SVEType {
enum TypeKind {
Invalid,
Void,
Float,
SInt,
UInt,
BFloat16,
MFloat8,
Svcount,
PrefetchOp,
PredicatePattern,
Predicate,
Fpm
};
TypeKind Kind;
bool Immediate, Constant, Pointer, DefaultType, IsScalable;
unsigned Bitwidth, ElementBitwidth, NumVectors;
public:
SVEType() : SVEType("", 'v') {}
SVEType(StringRef TS, char CharMod, unsigned NumVectors = 1)
: Kind(Invalid), Immediate(false), Constant(false), Pointer(false),
DefaultType(false), IsScalable(true), Bitwidth(128),
ElementBitwidth(~0U), NumVectors(NumVectors) {
if (!TS.empty())
applyTypespec(TS);
applyModifier(CharMod);
}
SVEType(const SVEType &Base, unsigned NumV) : SVEType(Base) {
NumVectors = NumV;
}
bool isPointer() const { return Pointer; }
bool isConstant() const { return Constant; }
bool isImmediate() const { return Immediate; }
bool isScalar() const { return NumVectors == 0; }
bool isVector() const { return NumVectors > 0; }
bool isScalableVector() const { return isVector() && IsScalable; }
bool isFixedLengthVector() const { return isVector() && !IsScalable; }
bool isChar() const { return ElementBitwidth == 8 && isInteger(); }
bool isVoid() const { return Kind == Void; }
bool isDefault() const { return DefaultType; }
bool isFloat() const { return Kind == Float; }
bool isBFloat() const { return Kind == BFloat16; }
bool isMFloat() const { return Kind == MFloat8; }
bool isFloatingPoint() const {
return Kind == Float || Kind == BFloat16 || Kind == MFloat8;
}
bool isInteger() const { return Kind == SInt || Kind == UInt; }
bool isSignedInteger() const { return Kind == SInt; }
bool isUnsignedInteger() const { return Kind == UInt; }
bool isScalarPredicate() const {
return Kind == Predicate && NumVectors == 0;
}
bool isPredicate() const { return Kind == Predicate; }
bool isPredicatePattern() const { return Kind == PredicatePattern; }
bool isPrefetchOp() const { return Kind == PrefetchOp; }
bool isSvcount() const { return Kind == Svcount; }
bool isFpm() const { return Kind == Fpm; }
bool isInvalid() const { return Kind == Invalid; }
unsigned getElementSizeInBits() const { return ElementBitwidth; }
unsigned getNumVectors() const { return NumVectors; }
unsigned getNumElements() const {
assert(ElementBitwidth != ~0U);
return isPredicate() ? 16 : (Bitwidth / ElementBitwidth);
}
unsigned getSizeInBits() const {
return Bitwidth;
}
/// Return the string representation of a type, which is an encoded
/// string for passing to the BUILTIN() macro in Builtins.def.
std::string builtin_str() const;
/// Return the C/C++ string representation of a type for use in the
/// arm_sve.h header file.
std::string str() const;
private:
/// Creates the type based on the typespec string in TS.
void applyTypespec(StringRef TS);
/// Applies a prototype modifier to the type.
void applyModifier(char Mod);
/// Get the builtin base for this SVEType, e.g. 'Wi' for svint64_t.
std::string builtinBaseType() const;
};
class SVEEmitter;
/// The main grunt class. This represents an instantiation of an intrinsic with
/// a particular typespec and prototype.
class Intrinsic {
/// The unmangled name.
std::string Name;
/// The name of the corresponding LLVM IR intrinsic.
std::string LLVMName;
/// Intrinsic prototype.
std::string Proto;
/// The base type spec for this intrinsic.
TypeSpec BaseTypeSpec;
/// The base class kind. Most intrinsics use ClassS, which has full type
/// info for integers (_s32/_u32), or ClassG which is used for overloaded
/// intrinsics.
ClassKind Class;
/// The architectural #ifdef guard.
std::string SVEGuard, SMEGuard;
// The merge suffix such as _m, _x or _z.
std::string MergeSuffix;
/// The types of return value [0] and parameters [1..].
std::vector<SVEType> Types;
/// The "base type", which is VarType('d', BaseTypeSpec).
SVEType BaseType;
uint64_t Flags;
SmallVector<ImmCheck, 2> ImmChecks;
bool SetsFPMR;
public:
Intrinsic(StringRef Name, StringRef Proto, uint64_t MergeTy,
StringRef MergeSuffix, uint64_t MemoryElementTy, StringRef LLVMName,
uint64_t Flags, ArrayRef<ImmCheck> ImmChecks, TypeSpec BT,
ClassKind Class, SVEEmitter &Emitter, StringRef SVEGuard,
StringRef SMEGuard);
~Intrinsic()=default;
std::string getName() const { return Name; }
std::string getLLVMName() const { return LLVMName; }
std::string getProto() const { return Proto; }
TypeSpec getBaseTypeSpec() const { return BaseTypeSpec; }
SVEType getBaseType() const { return BaseType; }
StringRef getSVEGuard() const { return SVEGuard; }
StringRef getSMEGuard() const { return SMEGuard; }
std::string getGuard() const {
std::string Guard;
llvm::raw_string_ostream OS(Guard);
if (!SVEGuard.empty() && SMEGuard.empty())
OS << SVEGuard;
else if (SVEGuard.empty() && !SMEGuard.empty())
OS << SMEGuard;
else {
if (SVEGuard.find(",") != std::string::npos ||
SVEGuard.find("|") != std::string::npos)
OS << "(" << SVEGuard << ")";
else
OS << SVEGuard;
OS << "|";
if (SMEGuard.find(",") != std::string::npos ||
SMEGuard.find("|") != std::string::npos)
OS << "(" << SMEGuard << ")";
else
OS << SMEGuard;
}
return Guard;
}
ClassKind getClassKind() const { return Class; }
SVEType getReturnType() const { return Types[0]; }
ArrayRef<SVEType> getTypes() const { return Types; }
SVEType getParamType(unsigned I) const { return Types[I + 1]; }
unsigned getNumParams() const {
return Proto.size() - (2 * count(Proto, '.')) - 1;
}
uint64_t getFlags() const { return Flags; }
bool isFlagSet(uint64_t Flag) const { return Flags & Flag;}
ArrayRef<ImmCheck> getImmChecks() const { return ImmChecks; }
/// Return the type string for a BUILTIN() macro in Builtins.def.
std::string getBuiltinTypeStr();
/// Return the name, mangled with type information. The name is mangled for
/// ClassS, so will add type suffixes such as _u32/_s32.
std::string getMangledName() const { return mangleName(ClassS); }
/// As above, but mangles the LLVM name instead.
std::string getMangledLLVMName() const { return mangleLLVMName(); }
/// Returns true if the intrinsic is overloaded, in that it should also generate
/// a short form without the type-specifiers, e.g. 'svld1(..)' instead of
/// 'svld1_u32(..)'.
static bool isOverloadedIntrinsic(StringRef Name) {
auto BrOpen = Name.find('[');
auto BrClose = Name.find(']');
return BrOpen != std::string::npos && BrClose != std::string::npos;
}
/// Return true if the intrinsic takes a splat operand.
bool hasSplat() const {
// These prototype modifiers are described in arm_sve.td.
return Proto.find_first_of("ajfrKLR@!") != std::string::npos;
}
/// Return the parameter index of the splat operand.
unsigned getSplatIdx() const {
unsigned I = 1, Param = 0;
for (; I < Proto.size(); ++I, ++Param) {
if (Proto[I] == 'a' || Proto[I] == 'j' || Proto[I] == 'f' ||
Proto[I] == 'r' || Proto[I] == 'K' || Proto[I] == 'L' ||
Proto[I] == 'R' || Proto[I] == '@' || Proto[I] == '!')
break;
// Multivector modifier can be skipped
if (Proto[I] == '.')
I += 2;
}
assert(I != Proto.size() && "Prototype has no splat operand");
return Param;
}
/// Emits the intrinsic declaration to the ostream.
void emitIntrinsic(raw_ostream &OS, SVEEmitter &Emitter, ACLEKind Kind) const;
private:
std::string getMergeSuffix() const { return MergeSuffix; }
StringRef getFPMSuffix() const { return SetsFPMR ? "_fpm" : ""; }
std::string mangleName(ClassKind LocalCK) const;
std::string mangleLLVMName() const;
std::string replaceTemplatedArgs(std::string Name, TypeSpec TS,
std::string Proto) const;
};
class SVEEmitter {
private:
// The reinterpret builtins are generated separately because they
// need the cross product of all types (121 functions in total),
// which is inconvenient to specify in the arm_sve.td file or
// generate in CGBuiltin.cpp.
struct ReinterpretTypeInfo {
SVEType BaseType;
const char *Suffix;
};
static const std::array<ReinterpretTypeInfo, 13> Reinterprets;
const RecordKeeper &Records;
StringMap<uint64_t> EltTypes;
StringMap<uint64_t> MemEltTypes;
StringMap<uint64_t> FlagTypes;
StringMap<uint64_t> MergeTypes;
StringMap<uint64_t> ImmCheckTypes;
public:
SVEEmitter(const RecordKeeper &R) : Records(R) {
for (auto *RV : Records.getAllDerivedDefinitions("EltType"))
EltTypes[RV->getNameInitAsString()] = RV->getValueAsInt("Value");
for (auto *RV : Records.getAllDerivedDefinitions("MemEltType"))
MemEltTypes[RV->getNameInitAsString()] = RV->getValueAsInt("Value");
for (auto *RV : Records.getAllDerivedDefinitions("FlagType"))
FlagTypes[RV->getNameInitAsString()] = RV->getValueAsInt("Value");
for (auto *RV : Records.getAllDerivedDefinitions("MergeType"))
MergeTypes[RV->getNameInitAsString()] = RV->getValueAsInt("Value");
for (auto *RV : Records.getAllDerivedDefinitions("ImmCheckType"))
ImmCheckTypes[RV->getNameInitAsString()] = RV->getValueAsInt("Value");
}
/// Returns the enum value for the immcheck type
unsigned getEnumValueForImmCheck(StringRef C) const {
auto It = ImmCheckTypes.find(C);
if (It != ImmCheckTypes.end())
return It->getValue();
llvm_unreachable("Unsupported imm check");
}
/// Returns the enum value for the flag type
uint64_t getEnumValueForFlag(StringRef C) const {
auto Res = FlagTypes.find(C);
if (Res != FlagTypes.end())
return Res->getValue();
llvm_unreachable("Unsupported flag");
}
// Returns the SVETypeFlags for a given value and mask.
uint64_t encodeFlag(uint64_t V, StringRef MaskName) const {
auto It = FlagTypes.find(MaskName);
if (It != FlagTypes.end()) {
uint64_t Mask = It->getValue();
unsigned Shift = countr_zero(Mask);
assert(Shift < 64 && "Mask value produced an invalid shift value");
return (V << Shift) & Mask;
}
llvm_unreachable("Unsupported flag");
}
// Returns the SVETypeFlags for the given element type.
uint64_t encodeEltType(StringRef EltName) {
auto It = EltTypes.find(EltName);
if (It != EltTypes.end())
return encodeFlag(It->getValue(), "EltTypeMask");
llvm_unreachable("Unsupported EltType");
}
// Returns the SVETypeFlags for the given memory element type.
uint64_t encodeMemoryElementType(uint64_t MT) {
return encodeFlag(MT, "MemEltTypeMask");
}
// Returns the SVETypeFlags for the given merge type.
uint64_t encodeMergeType(uint64_t MT) {
return encodeFlag(MT, "MergeTypeMask");
}
// Returns the SVETypeFlags for the given splat operand.
unsigned encodeSplatOperand(unsigned SplatIdx) {
assert(SplatIdx < 7 && "SplatIdx out of encodable range");
return encodeFlag(SplatIdx + 1, "SplatOperandMask");
}
// Returns the SVETypeFlags value for the given SVEType.
uint64_t encodeTypeFlags(const SVEType &T);
/// Emit arm_sve.h.
void createHeader(raw_ostream &o);
// Emits core intrinsics in both arm_sme.h and arm_sve.h
void createCoreHeaderIntrinsics(raw_ostream &o, SVEEmitter &Emitter,
ACLEKind Kind);
/// Emit all the __builtin prototypes and code needed by Sema.
void createBuiltins(raw_ostream &o);
/// Emit all the information needed to map builtin -> LLVM IR intrinsic.
void createCodeGenMap(raw_ostream &o);
/// Emit all the range checks for the immediates.
void createRangeChecks(raw_ostream &o);
// Emit all the ImmCheckTypes to arm_immcheck_types.inc
void createImmCheckTypes(raw_ostream &OS);
/// Create the SVETypeFlags used in CGBuiltins
void createTypeFlags(raw_ostream &o);
/// Emit arm_sme.h.
void createSMEHeader(raw_ostream &o);
/// Emit all the SME __builtin prototypes and code needed by Sema.
void createSMEBuiltins(raw_ostream &o);
/// Emit all the information needed to map builtin -> LLVM IR intrinsic.
void createSMECodeGenMap(raw_ostream &o);
/// Create a table for a builtin's requirement for PSTATE.SM.
void createStreamingAttrs(raw_ostream &o, ACLEKind Kind);
/// Emit all the range checks for the immediates.
void createSMERangeChecks(raw_ostream &o);
/// Create a table for a builtin's requirement for PSTATE.ZA.
void createBuiltinZAState(raw_ostream &OS);
/// Create intrinsic and add it to \p Out
void createIntrinsic(const Record *R,
SmallVectorImpl<std::unique_ptr<Intrinsic>> &Out);
};
const std::array<SVEEmitter::ReinterpretTypeInfo, 13> SVEEmitter::Reinterprets =
{{{SVEType("c", 'd'), "s8"},
{SVEType("Uc", 'd'), "u8"},
{SVEType("m", 'd'), "mf8"},
{SVEType("s", 'd'), "s16"},
{SVEType("Us", 'd'), "u16"},
{SVEType("i", 'd'), "s32"},
{SVEType("Ui", 'd'), "u32"},
{SVEType("l", 'd'), "s64"},
{SVEType("Ul", 'd'), "u64"},
{SVEType("h", 'd'), "f16"},
{SVEType("b", 'd'), "bf16"},
{SVEType("f", 'd'), "f32"},
{SVEType("d", 'd'), "f64"}}};
} // end anonymous namespace
//===----------------------------------------------------------------------===//
// Type implementation
//===----------------------------------------------------------------------===//
std::string SVEType::builtinBaseType() const {
switch (Kind) {
case TypeKind::Void:
return "v";
case TypeKind::Svcount:
return "Qa";
case TypeKind::PrefetchOp:
case TypeKind::PredicatePattern:
return "i";
case TypeKind::Fpm:
return "UWi";
case TypeKind::Predicate:
return "b";
case TypeKind::BFloat16:
assert(ElementBitwidth == 16 && "Invalid BFloat16!");
return "y";
case TypeKind::MFloat8:
assert(ElementBitwidth == 8 && "Invalid MFloat8!");
return "m";
case TypeKind::Float:
switch (ElementBitwidth) {
case 16:
return "h";
case 32:
return "f";
case 64:
return "d";
default:
llvm_unreachable("Unhandled float width!");
}
case TypeKind::SInt:
case TypeKind::UInt:
switch (ElementBitwidth) {
case 1:
return "b";
case 8:
return "c";
case 16:
return "s";
case 32:
return "i";
case 64:
return "Wi";
case 128:
return "LLLi";
default:
llvm_unreachable("Unhandled bitwidth!");
}
case TypeKind::Invalid:
llvm_unreachable("Attempting to resolve builtin string from Invalid type!");
}
llvm_unreachable("Unhandled TypeKind!");
}
std::string SVEType::builtin_str() const {
std::string Prefix;
if (isScalableVector())
Prefix = "q" + llvm::utostr(getNumElements() * NumVectors);
else if (isFixedLengthVector())
Prefix = "V" + llvm::utostr(getNumElements() * NumVectors);
else if (isImmediate()) {
assert(!isFloatingPoint() && "fp immediates are not supported");
Prefix = "I";
}
// Make chars and integer pointers explicitly signed.
if ((ElementBitwidth == 8 || isPointer()) && isSignedInteger())
Prefix += "S";
else if (isUnsignedInteger())
Prefix += "U";
std::string BuiltinStr = Prefix + builtinBaseType();
if (isConstant())
BuiltinStr += "C";
if (isPointer())
BuiltinStr += "*";
return BuiltinStr;
}
std::string SVEType::str() const {
std::string TypeStr;
switch (Kind) {
case TypeKind::PrefetchOp:
return "enum svprfop";
case TypeKind::PredicatePattern:
return "enum svpattern";
case TypeKind::Fpm:
TypeStr += "fpm";
break;
case TypeKind::Void:
TypeStr += "void";
break;
case TypeKind::Float:
TypeStr += "float" + llvm::utostr(ElementBitwidth);
break;
case TypeKind::Svcount:
TypeStr += "svcount";
break;
case TypeKind::Predicate:
TypeStr += "bool";
break;
case TypeKind::BFloat16:
TypeStr += "bfloat16";
break;
case TypeKind::MFloat8:
TypeStr += "mfloat8";
break;
case TypeKind::SInt:
TypeStr += "int" + llvm::utostr(ElementBitwidth);
break;
case TypeKind::UInt:
TypeStr += "uint" + llvm::utostr(ElementBitwidth);
break;
case TypeKind::Invalid:
llvm_unreachable("Attempting to resolve type name from Invalid type!");
}
if (isFixedLengthVector())
TypeStr += "x" + llvm::utostr(getNumElements());
else if (isScalableVector())
TypeStr = "sv" + TypeStr;
if (NumVectors > 1)
TypeStr += "x" + llvm::utostr(NumVectors);
if (!isScalarPredicate() && !isVoid())
TypeStr += "_t";
if (isConstant())
TypeStr += " const";
if (isPointer())
TypeStr += " *";
return TypeStr;
}
void SVEType::applyTypespec(StringRef TS) {
for (char I : TS) {
switch (I) {
case 'Q':
assert(isInvalid() && "Unexpected use of typespec modifier");
Kind = Svcount;
break;
case 'P':
assert(isInvalid() && "Unexpected use of typespec modifier");
Kind = Predicate;
break;
case 'U':
assert(isInvalid() && "Unexpected use of typespec modifier");
Kind = UInt;
break;
case 'c':
Kind = isInvalid() ? SInt : Kind;
ElementBitwidth = 8;
break;
case 's':
Kind = isInvalid() ? SInt : Kind;
ElementBitwidth = 16;
break;
case 'i':
Kind = isInvalid() ? SInt : Kind;
ElementBitwidth = 32;
break;
case 'l':
Kind = isInvalid() ? SInt : Kind;
ElementBitwidth = 64;
break;
case 'q':
Kind = isInvalid() ? SInt : Kind;
ElementBitwidth = 128;
break;
case 'h':
assert(isInvalid() && "Unexpected use of typespec modifier");
Kind = Float;
ElementBitwidth = 16;
break;
case 'f':
assert(isInvalid() && "Unexpected use of typespec modifier");
Kind = Float;
ElementBitwidth = 32;
break;
case 'd':
assert(isInvalid() && "Unexpected use of typespec modifier");
Kind = Float;
ElementBitwidth = 64;
break;
case 'b':
assert(isInvalid() && "Unexpected use of typespec modifier");
Kind = BFloat16;
ElementBitwidth = 16;
break;
case 'm':
assert(isInvalid() && "Unexpected use of typespec modifier");
Kind = MFloat8;
ElementBitwidth = 8;
break;
default:
llvm_unreachable("Unhandled type code!");
}
}
assert(ElementBitwidth != ~0U && "Bad element bitwidth!");
}
void SVEType::applyModifier(char Mod) {
switch (Mod) {
case 'v':
Kind = Void;
NumVectors = 0;
break;
case 'd':
DefaultType = true;
break;
case 'c':
Constant = true;
[[fallthrough]];
case 'p':
Pointer = true;
Bitwidth = ElementBitwidth;
NumVectors = 0;
break;
case 'e':
Kind = UInt;
ElementBitwidth /= 2;
break;
case 'h':
ElementBitwidth /= 2;
break;
case 'q':
ElementBitwidth /= 4;
break;
case 'b':
Kind = UInt;
ElementBitwidth /= 4;
break;
case 'o':
ElementBitwidth *= 4;
break;
case 'P':
Kind = Predicate;
Bitwidth = 16;
ElementBitwidth = 1;
break;
case '{':
IsScalable = false;
Bitwidth = 128;
NumVectors = 1;
break;
case 's':
case 'a':
Bitwidth = ElementBitwidth;
NumVectors = 0;
break;
case 'R':
ElementBitwidth /= 2;
NumVectors = 0;
break;
case 'r':
ElementBitwidth /= 4;
NumVectors = 0;
break;
case '@':
Kind = UInt;
ElementBitwidth /= 4;
NumVectors = 0;
break;
case 'K':
Kind = SInt;
Bitwidth = ElementBitwidth;
NumVectors = 0;
break;
case 'L':
Kind = UInt;
Bitwidth = ElementBitwidth;
NumVectors = 0;
break;
case 'u':
Kind = UInt;
break;
case 'x':
Kind = SInt;
break;
case 'i':
Kind = UInt;
ElementBitwidth = Bitwidth = 64;
NumVectors = 0;
Immediate = true;
break;
case 'I':
Kind = PredicatePattern;
ElementBitwidth = Bitwidth = 32;
NumVectors = 0;
Immediate = true;
break;
case 'J':
Kind = PrefetchOp;
ElementBitwidth = Bitwidth = 32;
NumVectors = 0;
Immediate = true;
break;
case 'k':
Kind = SInt;
ElementBitwidth = Bitwidth = 32;
NumVectors = 0;
break;
case 'l':
Kind = SInt;
ElementBitwidth = Bitwidth = 64;
NumVectors = 0;
break;
case 'm':
Kind = UInt;
ElementBitwidth = Bitwidth = 32;
NumVectors = 0;
break;
case '>':
Kind = Fpm;
ElementBitwidth = Bitwidth = 64;
NumVectors = 0;
break;
case 'n':
Kind = UInt;
ElementBitwidth = Bitwidth = 64;
NumVectors = 0;
break;
case 'w':
ElementBitwidth = 64;
break;
case 'j':
ElementBitwidth = Bitwidth = 64;
NumVectors = 0;
break;
case 'f':
Kind = UInt;
ElementBitwidth = Bitwidth = 64;
NumVectors = 0;
break;
case 'g':
Kind = UInt;
ElementBitwidth = 64;
break;
case '#':
Kind = SInt;
ElementBitwidth = 64;
break;
case '[':
Kind = UInt;
ElementBitwidth = 8;
break;
case 't':
Kind = SInt;
ElementBitwidth = 32;
break;
case 'z':
Kind = UInt;
ElementBitwidth = 32;
break;
case 'O':
Kind = Float;
ElementBitwidth = 16;
break;
case 'M':
Kind = Float;
ElementBitwidth = 32;
break;
case 'N':
Kind = Float;
ElementBitwidth = 64;
break;
case 'Q':
Kind = Void;
Constant = true;
Pointer = true;
NumVectors = 0;
break;
case 'S':
Kind = SInt;
Constant = true;
Pointer = true;
ElementBitwidth = Bitwidth = 8;
NumVectors = 0;
break;
case 'W':
Kind = UInt;
Constant = true;
Pointer = true;
ElementBitwidth = Bitwidth = 8;
NumVectors = 0;
break;
case 'T':
Kind = SInt;
Constant = true;
Pointer = true;
ElementBitwidth = Bitwidth = 16;
NumVectors = 0;
break;
case 'X':
Kind = UInt;
Constant = true;
Pointer = true;
ElementBitwidth = Bitwidth = 16;
NumVectors = 0;
break;
case 'Y':
Kind = UInt;
Constant = true;
Pointer = true;
ElementBitwidth = Bitwidth = 32;
NumVectors = 0;
break;
case 'U':
Kind = SInt;
Constant = true;
Pointer = true;
ElementBitwidth = Bitwidth = 32;
NumVectors = 0;
break;
case '%':
Kind = Void;
Pointer = true;
NumVectors = 0;
break;
case 'A':
Kind = SInt;
Pointer = true;
ElementBitwidth = Bitwidth = 8;
NumVectors = 0;
break;
case 'B':
Kind = SInt;
Pointer = true;
ElementBitwidth = Bitwidth = 16;
NumVectors = 0;
break;
case 'C':
Kind = SInt;
Pointer = true;
ElementBitwidth = Bitwidth = 32;
NumVectors = 0;
break;
case 'D':
Kind = SInt;
Pointer = true;
ElementBitwidth = Bitwidth = 64;
NumVectors = 0;
break;
case 'E':
Kind = UInt;
Pointer = true;
ElementBitwidth = Bitwidth = 8;
NumVectors = 0;
break;
case 'F':
Kind = UInt;
Pointer = true;
ElementBitwidth = Bitwidth = 16;
NumVectors = 0;
break;
case 'G':
Kind = UInt;
Pointer = true;
ElementBitwidth = Bitwidth = 32;
NumVectors = 0;
break;
case '$':
Kind = BFloat16;
ElementBitwidth = 16;
break;
case '}':
Kind = Svcount;
NumVectors = 0;
break;
case '~':
Kind = MFloat8;
ElementBitwidth = 8;
break;
case '!':
Kind = MFloat8;
Bitwidth = ElementBitwidth = 8;
NumVectors = 0;
break;
case '.':
llvm_unreachable(". is never a type in itself");
break;
default:
llvm_unreachable("Unhandled character!");
}
}
/// Returns the modifier and number of vectors for the given operand \p Op.
std::pair<char, unsigned> getProtoModifier(StringRef Proto, unsigned Op) {
for (unsigned P = 0; !Proto.empty(); ++P) {
unsigned NumVectors = 1;
unsigned CharsToSkip = 1;
char Mod = Proto[0];
if (Mod == '2' || Mod == '3' || Mod == '4') {
NumVectors = Mod - '0';
Mod = 'd';
if (Proto.size() > 1 && Proto[1] == '.') {
Mod = Proto[2];
CharsToSkip = 3;
}
}
if (P == Op)
return {Mod, NumVectors};
Proto = Proto.drop_front(CharsToSkip);
}
llvm_unreachable("Unexpected Op");
}
//===----------------------------------------------------------------------===//
// Intrinsic implementation
//===----------------------------------------------------------------------===//
Intrinsic::Intrinsic(StringRef Name, StringRef Proto, uint64_t MergeTy,
StringRef MergeSuffix, uint64_t MemoryElementTy,
StringRef LLVMName, uint64_t Flags,
ArrayRef<ImmCheck> Checks, TypeSpec BT, ClassKind Class,
SVEEmitter &Emitter, StringRef SVEGuard,
StringRef SMEGuard)
: Name(Name.str()), LLVMName(LLVMName), Proto(Proto.str()),
BaseTypeSpec(BT), Class(Class), MergeSuffix(MergeSuffix.str()),
BaseType(BT, 'd'), Flags(Flags), ImmChecks(Checks) {
auto FormatGuard = [](StringRef Guard, StringRef Base) -> std::string {
if (Guard.contains('|'))
return Base.str() + ",(" + Guard.str() + ")";
if (Guard.empty() || Guard == Base || Guard.starts_with(Base.str() + ","))
return Guard.str();
return Base.str() + "," + Guard.str();
};
this->SVEGuard = FormatGuard(SVEGuard, "sve");
this->SMEGuard = FormatGuard(SMEGuard, "sme");
// Types[0] is the return value.
for (unsigned I = 0; I < (getNumParams() + 1); ++I) {
char Mod;
unsigned NumVectors;
std::tie(Mod, NumVectors) = getProtoModifier(Proto, I);
SVEType T(BaseTypeSpec, Mod, NumVectors);
Types.push_back(T);
SetsFPMR = T.isFpm();
// Add range checks for immediates
if (I > 0) {
if (T.isPredicatePattern())
ImmChecks.emplace_back(
I - 1, Emitter.getEnumValueForImmCheck("ImmCheck0_31"));