// a declaration and definition of each function specified by the ARM NEON
// compiler interface. See ARM document DUI0348B.
//
+// Each NEON 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.
+//
+// Additional validation code can be generated by this file when runHeader() is
+// called, rather than the normal run() entry point.
+//
//===----------------------------------------------------------------------===//
#include "NeonEmitter.h"
-#include "Record.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
-#include "llvm/ADT/StringMap.h"
#include <string>
using namespace llvm;
-enum OpKind {
- OpNone,
- OpAdd,
- OpSub,
- OpMul,
- OpMla,
- OpMls,
- OpEq,
- OpGe,
- OpLe,
- OpGt,
- OpLt,
- OpNeg,
- OpNot,
- OpAnd,
- OpOr,
- OpXor,
- OpAndNot,
- OpOrNot
-};
-
+/// ParseTypes - break down a string such as "fQf" into a vector of StringRefs,
+/// which each StringRef representing a single type declared in the string.
+/// for "fQf" we would end up with 2 StringRefs, "f", and "Qf", representing
+/// 2xfloat and 4xfloat respectively.
static void ParseTypes(Record *r, std::string &s,
SmallVectorImpl<StringRef> &TV) {
const char *data = s.data();
}
}
+/// Widen - Convert a type code into the next wider type. char -> short,
+/// short -> int, etc.
static char Widen(const char t) {
switch (t) {
case 'c':
return '\0';
}
+/// Narrow - Convert a type code into the next smaller type. short -> char,
+/// float -> half float, etc.
+static char Narrow(const char t) {
+ switch (t) {
+ case 's':
+ return 'c';
+ case 'i':
+ return 's';
+ case 'l':
+ return 'i';
+ case 'f':
+ return 'h';
+ default: throw "unhandled type in narrow!";
+ }
+ return '\0';
+}
+
+/// For a particular StringRef, return the base type code, and whether it has
+/// the quad-vector, polynomial, or unsigned modifiers set.
static char ClassifyType(StringRef ty, bool &quad, bool &poly, bool &usgn) {
unsigned off = 0;
return ty[off];
}
-static std::string TypeString(const char mod, StringRef typestr) {
- bool quad = false;
- bool poly = false;
- bool usgn = false;
- bool scal = false;
- bool cnst = false;
- bool pntr = false;
-
- // base type to get the type string for.
- char type = ClassifyType(typestr, quad, poly, usgn);
-
- // Based on the modifying character, change the type and width if necessary.
+/// ModType - Transform a type code and its modifiers based on a mod code. The
+/// mod code definitions may be found at the top of arm_neon.td.
+static char ModType(const char mod, char type, bool &quad, bool &poly,
+ bool &usgn, bool &scal, bool &cnst, bool &pntr) {
switch (mod) {
- case 'v':
- return "void";
- case 'i':
- return "int";
case 't':
if (poly) {
poly = false;
usgn = true;
}
break;
- case 'x':
+ case 'u':
usgn = true;
+ poly = false;
+ if (type == 'f')
+ type = 'i';
+ break;
+ case 'x':
+ usgn = false;
+ poly = false;
if (type == 'f')
type = 'i';
break;
case 'f':
+ if (type == 'h')
+ quad = true;
type = 'f';
+ usgn = false;
+ break;
+ case 'g':
+ quad = false;
break;
case 'w':
type = Widen(type);
case 'n':
type = Widen(type);
break;
+ case 'i':
+ type = 'i';
+ scal = true;
+ break;
case 'l':
type = 'l';
scal = true;
usgn = true;
break;
case 's':
+ case 'a':
scal = true;
break;
case 'k':
pntr = true;
scal = true;
break;
+ case 'h':
+ type = Narrow(type);
+ if (type == 'h')
+ quad = false;
+ break;
+ case 'e':
+ type = Narrow(type);
+ usgn = true;
+ break;
default:
break;
}
+ return type;
+}
+
+/// TypeString - for a modifier and type, generate the name of the typedef for
+/// that type. QUc -> uint8x8_t.
+static std::string TypeString(const char mod, StringRef typestr) {
+ bool quad = false;
+ bool poly = false;
+ bool usgn = false;
+ bool scal = false;
+ bool cnst = false;
+ bool pntr = false;
+
+ if (mod == 'v')
+ return "void";
+ if (mod == 'i')
+ return "int";
+
+ // base type to get the type string for.
+ char type = ClassifyType(typestr, quad, poly, usgn);
+
+ // Based on the modifying character, change the type and width if necessary.
+ type = ModType(mod, type, quad, poly, usgn, scal, cnst, pntr);
SmallString<128> s;
return s.str();
}
-// Turn "vst2_lane" into "vst2q_lane_f32", etc.
-static std::string MangleName(const std::string &name, StringRef typestr) {
+/// BuiltinTypeString - for a modifier and type, generate the clang
+/// BuiltinsARM.def prototype code for the function. See the top of clang's
+/// Builtins.def for a description of the type strings.
+static std::string BuiltinTypeString(const char mod, StringRef typestr,
+ ClassKind ck, bool ret) {
+ bool quad = false;
+ bool poly = false;
+ bool usgn = false;
+ bool scal = false;
+ bool cnst = false;
+ bool pntr = false;
+
+ if (mod == 'v')
+ return "v"; // void
+ if (mod == 'i')
+ return "i"; // int
+
+ // base type to get the type string for.
+ char type = ClassifyType(typestr, quad, poly, usgn);
+
+ // Based on the modifying character, change the type and width if necessary.
+ type = ModType(mod, type, quad, poly, usgn, scal, cnst, pntr);
+
+ // All pointers are void* pointers. Change type to 'v' now.
+ if (pntr) {
+ usgn = false;
+ poly = false;
+ type = 'v';
+ }
+ // Treat half-float ('h') types as unsigned short ('s') types.
+ if (type == 'h') {
+ type = 's';
+ usgn = true;
+ }
+ usgn = usgn | poly | ((ck == ClassI || ck == ClassW) && scal && type != 'f');
+
+ if (scal) {
+ SmallString<128> s;
+
+ if (usgn)
+ s.push_back('U');
+ else if (type == 'c')
+ s.push_back('S'); // make chars explicitly signed
+
+ if (type == 'l') // 64-bit long
+ s += "LLi";
+ else
+ s.push_back(type);
+
+ if (cnst)
+ s.push_back('C');
+ if (pntr)
+ s.push_back('*');
+ return s.str();
+ }
+
+ // Since the return value must be one type, return a vector type of the
+ // appropriate width which we will bitcast. An exception is made for
+ // returning structs of 2, 3, or 4 vectors which are returned in a sret-like
+ // fashion, storing them to a pointer arg.
+ if (ret) {
+ if (mod >= '2' && mod <= '4')
+ return "vv*"; // void result with void* first argument
+ if (mod == 'f' || (ck != ClassB && type == 'f'))
+ return quad ? "V4f" : "V2f";
+ if (ck != ClassB && type == 's')
+ return quad ? "V8s" : "V4s";
+ if (ck != ClassB && type == 'i')
+ return quad ? "V4i" : "V2i";
+ if (ck != ClassB && type == 'l')
+ return quad ? "V2LLi" : "V1LLi";
+
+ return quad ? "V16Sc" : "V8Sc";
+ }
+
+ // Non-return array types are passed as individual vectors.
+ if (mod == '2')
+ return quad ? "V16ScV16Sc" : "V8ScV8Sc";
+ if (mod == '3')
+ return quad ? "V16ScV16ScV16Sc" : "V8ScV8ScV8Sc";
+ if (mod == '4')
+ return quad ? "V16ScV16ScV16ScV16Sc" : "V8ScV8ScV8ScV8Sc";
+
+ if (mod == 'f' || (ck != ClassB && type == 'f'))
+ return quad ? "V4f" : "V2f";
+ if (ck != ClassB && type == 's')
+ return quad ? "V8s" : "V4s";
+ if (ck != ClassB && type == 'i')
+ return quad ? "V4i" : "V2i";
+ if (ck != ClassB && type == 'l')
+ return quad ? "V2LLi" : "V1LLi";
+
+ return quad ? "V16Sc" : "V8Sc";
+}
+
+/// MangleName - Append a type or width suffix to a base neon function name,
+/// and insert a 'q' in the appropriate location if the operation works on
+/// 128b rather than 64b. E.g. turn "vst2_lane" into "vst2q_lane_f32", etc.
+static std::string MangleName(const std::string &name, StringRef typestr,
+ ClassKind ck) {
+ if (name == "vcvt_f32_f16")
+ return name;
+
bool quad = false;
bool poly = false;
bool usgn = false;
std::string s = name;
switch (type) {
- case 'c':
- s += poly ? "_p8" : usgn ? "_u8" : "_s8";
- break;
- case 's':
- s += poly ? "_p16" : usgn ? "_u16" : "_s16";
- break;
- case 'i':
- s += usgn ? "_u32" : "_s32";
- break;
- case 'l':
- s += usgn ? "_u64" : "_s64";
- break;
- case 'h':
- s += "_f16";
- break;
- case 'f':
- s += "_f32";
- break;
- default:
- throw "unhandled type!";
- break;
+ case 'c':
+ switch (ck) {
+ case ClassS: s += poly ? "_p8" : usgn ? "_u8" : "_s8"; break;
+ case ClassI: s += "_i8"; break;
+ case ClassW: s += "_8"; break;
+ default: break;
+ }
+ break;
+ case 's':
+ switch (ck) {
+ case ClassS: s += poly ? "_p16" : usgn ? "_u16" : "_s16"; break;
+ case ClassI: s += "_i16"; break;
+ case ClassW: s += "_16"; break;
+ default: break;
+ }
+ break;
+ case 'i':
+ switch (ck) {
+ case ClassS: s += usgn ? "_u32" : "_s32"; break;
+ case ClassI: s += "_i32"; break;
+ case ClassW: s += "_32"; break;
+ default: break;
+ }
+ break;
+ case 'l':
+ switch (ck) {
+ case ClassS: s += usgn ? "_u64" : "_s64"; break;
+ case ClassI: s += "_i64"; break;
+ case ClassW: s += "_64"; break;
+ default: break;
+ }
+ break;
+ case 'h':
+ switch (ck) {
+ case ClassS:
+ case ClassI: s += "_f16"; break;
+ case ClassW: s += "_16"; break;
+ default: break;
+ }
+ break;
+ case 'f':
+ switch (ck) {
+ case ClassS:
+ case ClassI: s += "_f32"; break;
+ case ClassW: s += "_32"; break;
+ default: break;
+ }
+ break;
+ default:
+ throw "unhandled type!";
+ break;
}
-
+ if (ck == ClassB)
+ s += "_v";
+
// Insert a 'q' before the first '_' character so that it ends up before
// _lane or _n on vector-scalar operations.
if (quad) {
// Generate the string "(argtype a, argtype b, ...)"
static std::string GenArgs(const std::string &proto, StringRef typestr) {
+ bool define = proto.find('i') != std::string::npos;
char arg = 'a';
std::string s;
s += "(";
for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) {
- s += TypeString(proto[i], typestr);
- s.push_back(' ');
+ if (!define) {
+ s += TypeString(proto[i], typestr);
+ s.push_back(' ');
+ }
s.push_back(arg);
if ((i + 1) < e)
s += ", ";
return s;
}
-static OpKind ParseOp(Record *R) {
- return OpNone;
+// Generate the local temporaries used to provide type checking for macro
+// arguments.
+static std::string GenMacroLocals(const std::string &proto, StringRef typestr) {
+ char arg = 'a';
+ std::string s;
+
+ for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) {
+ // Do not create a temporary for an immediate argument.
+ // That would defeat the whole point of using a macro!
+ if (proto[i] == 'i') continue;
+
+ s += TypeString(proto[i], typestr) + " __";
+ s.push_back(arg);
+ s += " = (";
+ s.push_back(arg);
+ s += "); ";
+ }
+
+ s += "\\\n ";
+ return s;
+}
+
+static std::string Duplicate(unsigned nElts, StringRef typestr,
+ const std::string &a) {
+ std::string s;
+
+ s = "(" + TypeString('d', typestr) + "){ ";
+ for (unsigned i = 0; i != nElts; ++i) {
+ s += a;
+ if ((i + 1) < nElts)
+ s += ", ";
+ }
+ s += " }";
+
+ return s;
+}
+
+static unsigned GetNumElements(StringRef typestr, bool &quad) {
+ quad = false;
+ bool dummy = false;
+ char type = ClassifyType(typestr, quad, dummy, dummy);
+ unsigned nElts = 0;
+ switch (type) {
+ case 'c': nElts = 8; break;
+ case 's': nElts = 4; break;
+ case 'i': nElts = 2; break;
+ case 'l': nElts = 1; break;
+ case 'h': nElts = 4; break;
+ case 'f': nElts = 2; break;
+ default:
+ throw "unhandled type!";
+ break;
+ }
+ if (quad) nElts <<= 1;
+ return nElts;
}
// Generate the definition for this intrinsic, e.g. "a + b" for OpAdd.
-// If structTypes is true, the NEON types are structs of vector types rather
-// than vector types, and the call becomes "a.val + b.val"
static std::string GenOpString(OpKind op, const std::string &proto,
- bool structTypes = true) {
- return "";
+ StringRef typestr) {
+ bool quad;
+ unsigned nElts = GetNumElements(typestr, quad);
+
+ std::string ts = TypeString(proto[0], typestr);
+ std::string s;
+ if (op == OpHi || op == OpLo) {
+ s = "union { " + ts + " r; double d; } u; u.d = ";
+ } else {
+ s = "return ";
+ }
+
+ switch(op) {
+ case OpAdd:
+ s += "a + b;";
+ break;
+ case OpSub:
+ s += "a - b;";
+ break;
+ case OpMulN:
+ s += "a * " + Duplicate(nElts, typestr, "b") + ";";
+ break;
+ case OpMul:
+ s += "a * b;";
+ break;
+ case OpMlaN:
+ s += "a + (b * " + Duplicate(nElts, typestr, "c") + ");";
+ break;
+ case OpMla:
+ s += "a + (b * c);";
+ break;
+ case OpMlsN:
+ s += "a - (b * " + Duplicate(nElts, typestr, "c") + ");";
+ break;
+ case OpMls:
+ s += "a - (b * c);";
+ break;
+ case OpEq:
+ s += "(" + ts + ")(a == b);";
+ break;
+ case OpGe:
+ s += "(" + ts + ")(a >= b);";
+ break;
+ case OpLe:
+ s += "(" + ts + ")(a <= b);";
+ break;
+ case OpGt:
+ s += "(" + ts + ")(a > b);";
+ break;
+ case OpLt:
+ s += "(" + ts + ")(a < b);";
+ break;
+ case OpNeg:
+ s += " -a;";
+ break;
+ case OpNot:
+ s += " ~a;";
+ break;
+ case OpAnd:
+ s += "a & b;";
+ break;
+ case OpOr:
+ s += "a | b;";
+ break;
+ case OpXor:
+ s += "a ^ b;";
+ break;
+ case OpAndNot:
+ s += "a & ~b;";
+ break;
+ case OpOrNot:
+ s += "a | ~b;";
+ break;
+ case OpCast:
+ s += "(" + ts + ")a;";
+ break;
+ case OpConcat:
+ s += "(" + ts + ")__builtin_shufflevector((int64x1_t)a";
+ s += ", (int64x1_t)b, 0, 1);";
+ break;
+ case OpHi:
+ s += "(((float64x2_t)a)[1]);";
+ break;
+ case OpLo:
+ s += "(((float64x2_t)a)[0]);";
+ break;
+ case OpDup:
+ s += Duplicate(nElts, typestr, "a") + ";";
+ break;
+ case OpSelect:
+ // ((0 & 1) | (~0 & 2))
+ s += "(" + ts + ")";
+ ts = TypeString(proto[1], typestr);
+ s += "((a & (" + ts + ")b) | ";
+ s += "(~a & (" + ts + ")c));";
+ break;
+ case OpRev16:
+ s += "__builtin_shufflevector(a, a";
+ for (unsigned i = 2; i <= nElts; i += 2)
+ for (unsigned j = 0; j != 2; ++j)
+ s += ", " + utostr(i - j - 1);
+ s += ");";
+ break;
+ case OpRev32: {
+ unsigned WordElts = nElts >> (1 + (int)quad);
+ s += "__builtin_shufflevector(a, a";
+ for (unsigned i = WordElts; i <= nElts; i += WordElts)
+ for (unsigned j = 0; j != WordElts; ++j)
+ s += ", " + utostr(i - j - 1);
+ s += ");";
+ break;
+ }
+ case OpRev64: {
+ unsigned DblWordElts = nElts >> (int)quad;
+ s += "__builtin_shufflevector(a, a";
+ for (unsigned i = DblWordElts; i <= nElts; i += DblWordElts)
+ for (unsigned j = 0; j != DblWordElts; ++j)
+ s += ", " + utostr(i - j - 1);
+ s += ");";
+ break;
+ }
+ default:
+ throw "unknown OpKind!";
+ break;
+ }
+ if (op == OpHi || op == OpLo)
+ s += " return u.r;";
+ return s;
}
-// Generate the definition for this intrinsic, e.g. __builtin_neon_cls(a)
-// If structTypes is true, the NEON types are structs of vector types rather
-// than vector types, and the call becomes __builtin_neon_cls(a.val)
-static std::string GenBuiltin(const std::string &name, const std::string &proto,
- StringRef typestr, bool structTypes = true) {
- char arg = 'a';
- std::string s("return ");
+static unsigned GetNeonEnum(const std::string &proto, StringRef typestr) {
+ unsigned mod = proto[0];
+ unsigned ret = 0;
+
+ if (mod == 'v' || mod == 'f')
+ mod = proto[1];
+
+ bool quad = false;
+ bool poly = false;
+ bool usgn = false;
+ bool scal = false;
+ bool cnst = false;
+ bool pntr = false;
- // FIXME: if return type is 2/3/4, emit unioning code.
+ // Base type to get the type string for.
+ char type = ClassifyType(typestr, quad, poly, usgn);
- if (structTypes) {
- s += "(";
- s += TypeString(proto[0], typestr);
- s += "){";
+ // Based on the modifying character, change the type and width if necessary.
+ type = ModType(mod, type, quad, poly, usgn, scal, cnst, pntr);
+
+ if (usgn)
+ ret |= 0x08;
+ if (quad && proto[1] != 'g')
+ ret |= 0x10;
+
+ switch (type) {
+ case 'c':
+ ret |= poly ? 5 : 0;
+ break;
+ case 's':
+ ret |= poly ? 6 : 1;
+ break;
+ case 'i':
+ ret |= 2;
+ break;
+ case 'l':
+ ret |= 3;
+ break;
+ case 'h':
+ ret |= 7;
+ break;
+ case 'f':
+ ret |= 4;
+ break;
+ default:
+ throw "unhandled type!";
+ break;
+ }
+ return ret;
+}
+
+// Generate the definition for this intrinsic, e.g. __builtin_neon_cls(a)
+static std::string GenBuiltin(const std::string &name, const std::string &proto,
+ StringRef typestr, ClassKind ck) {
+ std::string s;
+
+ // If this builtin returns a struct 2, 3, or 4 vectors, pass it as an implicit
+ // sret-like argument.
+ bool sret = (proto[0] >= '2' && proto[0] <= '4');
+
+ // If this builtin takes an immediate argument, we need to #define it rather
+ // than use a standard declaration, so that SemaChecking can range check
+ // the immediate passed by the user.
+ bool define = proto.find('i') != std::string::npos;
+
+ // Check if the prototype has a scalar operand with the type of the vector
+ // elements. If not, bitcasting the args will take care of arg checking.
+ // The actual signedness etc. will be taken care of with special enums.
+ if (proto.find('s') == std::string::npos)
+ ck = ClassB;
+
+ // Macro arguments are not type-checked like inline function arguments, so
+ // assign them to local temporaries to get the right type checking.
+ if (define)
+ s += GenMacroLocals(proto, typestr);
+
+ if (proto[0] != 'v') {
+ std::string ts = TypeString(proto[0], typestr);
+
+ if (define) {
+ if (sret)
+ s += ts + " r; ";
+ else
+ s += "(" + ts + ")";
+ } else if (sret) {
+ s += ts + " r; ";
+ } else {
+ s += "return (" + ts + ")";
+ }
}
+ bool splat = proto.find('a') != std::string::npos;
+
s += "__builtin_neon_";
- s += name;
+ if (splat) {
+ // Call the non-splat builtin: chop off the "_n" suffix from the name.
+ std::string vname(name, 0, name.size()-2);
+ s += MangleName(vname, typestr, ck);
+ } else {
+ s += MangleName(name, typestr, ck);
+ }
s += "(";
+
+ // Pass the address of the return variable as the first argument to sret-like
+ // builtins.
+ if (sret)
+ s += "&r, ";
+ char arg = 'a';
for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) {
- s.push_back(arg);
- if (structTypes)
- s += ".val";
+ std::string args = std::string(&arg, 1);
+
+ // For macros, use the local temporaries instead of the macro arguments.
+ if (define && proto[i] != 'i')
+ args = "__" + args;
+
+ bool argQuad = false;
+ bool argPoly = false;
+ bool argUsgn = false;
+ bool argScalar = false;
+ bool dummy = false;
+ char argType = ClassifyType(typestr, argQuad, argPoly, argUsgn);
+ argType = ModType(proto[i], argType, argQuad, argPoly, argUsgn, argScalar,
+ dummy, dummy);
+
+ // Handle multiple-vector values specially, emitting each subvector as an
+ // argument to the __builtin.
+ if (proto[i] >= '2' && proto[i] <= '4') {
+ // Check if an explicit cast is needed.
+ if (argType != 'c' || argPoly || argUsgn)
+ args = (argQuad ? "(int8x16_t)" : "(int8x8_t)") + args;
+
+ for (unsigned vi = 0, ve = proto[i] - '0'; vi != ve; ++vi) {
+ s += args + ".val[" + utostr(vi) + "]";
+ if ((vi + 1) < ve)
+ s += ", ";
+ }
+ if ((i + 1) < e)
+ s += ", ";
+
+ continue;
+ }
+
+ if (splat && (i + 1) == e)
+ args = Duplicate(GetNumElements(typestr, argQuad), typestr, args);
+
+ // Check if an explicit cast is needed.
+ if ((splat || !argScalar) &&
+ ((ck == ClassB && argType != 'c') || argPoly || argUsgn)) {
+ std::string argTypeStr = "c";
+ if (ck != ClassB)
+ argTypeStr = argType;
+ if (argQuad)
+ argTypeStr = "Q" + argTypeStr;
+ args = "(" + TypeString('d', argTypeStr) + ")" + args;
+ }
+
+ s += args;
if ((i + 1) < e)
s += ", ";
}
- s += ")";
- if (structTypes)
- s += "}";
- s += ";";
+ // Extra constant integer to hold type class enum for this function, e.g. s8
+ if (ck == ClassB)
+ s += ", " + utostr(GetNeonEnum(proto, typestr));
+
+ s += ");";
+
+ if (proto[0] != 'v' && sret) {
+ if (define)
+ s += " r;";
+ else
+ s += " return r;";
+ }
+ return s;
+}
+
+static std::string GenBuiltinDef(const std::string &name,
+ const std::string &proto,
+ StringRef typestr, ClassKind ck) {
+ std::string s("BUILTIN(__builtin_neon_");
+
+ // If all types are the same size, bitcasting the args will take care
+ // of arg checking. The actual signedness etc. will be taken care of with
+ // special enums.
+ if (proto.find('s') == std::string::npos)
+ ck = ClassB;
+
+ s += MangleName(name, typestr, ck);
+ s += ", \"";
+
+ for (unsigned i = 0, e = proto.size(); i != e; ++i)
+ s += BuiltinTypeString(proto[i], typestr, ck, i == 0);
+
+ // Extra constant integer to hold type class enum for this function, e.g. s8
+ if (ck == ClassB)
+ s += "i";
+
+ s += "\", \"n\")";
return s;
}
+/// run - Read the records in arm_neon.td and output arm_neon.h. arm_neon.h
+/// is comprised of type definitions and function declarations.
void NeonEmitter::run(raw_ostream &OS) {
EmitSourceFileHeader("ARM NEON Header", OS);
OS << "#include <stdint.h>\n\n";
// Emit NEON-specific scalar typedefs.
- // FIXME: probably need to do something better for polynomial types.
OS << "typedef float float32_t;\n";
- OS << "typedef uint8_t poly8_t;\n";
- OS << "typedef uint16_t poly16_t;\n";
-
+ OS << "typedef int8_t poly8_t;\n";
+ OS << "typedef int16_t poly16_t;\n";
+ OS << "typedef uint16_t float16_t;\n";
+
// Emit Neon vector typedefs.
std::string TypedefTypes("cQcsQsiQilQlUcQUcUsQUsUiQUiUlQUlhQhfQfPcQPcPsQPs");
SmallVector<StringRef, 24> TDTypeVec;
// Emit vector typedefs.
for (unsigned i = 0, e = TDTypeVec.size(); i != e; ++i) {
- bool dummy, quad = false;
- (void) ClassifyType(TDTypeVec[i], quad, dummy, dummy);
- OS << "typedef __attribute__(( __vector_size__(";
- OS << (quad ? "16) )) " : "8) )) ");
+ bool dummy, quad = false, poly = false;
+ (void) ClassifyType(TDTypeVec[i], quad, poly, dummy);
+ if (poly)
+ OS << "typedef __attribute__((neon_polyvector_type(";
+ else
+ OS << "typedef __attribute__((neon_vector_type(";
+
+ unsigned nElts = GetNumElements(TDTypeVec[i], quad);
+ OS << utostr(nElts) << "))) ";
+ if (nElts < 10)
+ OS << " ";
+
OS << TypeString('s', TDTypeVec[i]);
- OS << " __neon_";
- OS << TypeString('d', TDTypeVec[i]) << "\n";
+ OS << " " << TypeString('d', TDTypeVec[i]) << ";\n";
}
OS << "\n";
+ OS << "typedef __attribute__((__vector_size__(8))) "
+ "double float64x1_t;\n";
+ OS << "typedef __attribute__((__vector_size__(16))) "
+ "double float64x2_t;\n";
+ OS << "\n";
// Emit struct typedefs.
- for (unsigned vi = 1; vi != 5; ++vi) {
+ for (unsigned vi = 2; vi != 5; ++vi) {
for (unsigned i = 0, e = TDTypeVec.size(); i != e; ++i) {
std::string ts = TypeString('d', TDTypeVec[i]);
- std::string vs = (vi > 1) ? TypeString('0' + vi, TDTypeVec[i]) : ts;
- OS << "typedef struct __" << vs << " {\n";
- OS << " __neon_" << ts << " val";
- if (vi > 1)
- OS << "[" << utostr(vi) << "]";
- OS << ";\n} " << vs << ";\n\n";
+ std::string vs = TypeString('0' + vi, TDTypeVec[i]);
+ OS << "typedef struct " << vs << " {\n";
+ OS << " " << ts << " val";
+ OS << "[" << utostr(vi) << "]";
+ OS << ";\n} ";
+ OS << vs << ";\n\n";
}
}
SmallVector<StringRef, 16> TypeVec;
ParseTypes(R, Types, TypeVec);
- OpKind k = ParseOp(R);
+ OpKind k = OpMap[R->getValueAsDef("Operand")->getName()];
+
+ bool define = Proto.find('i') != std::string::npos;
for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) {
assert(!Proto.empty() && "");
// static always inline + return type
- OS << "__ai " << TypeString(Proto[0], TypeVec[ti]);
+ if (define)
+ OS << "#define";
+ else
+ OS << "__ai " << TypeString(Proto[0], TypeVec[ti]);
// Function name with type suffix
- OS << " " << MangleName(name, TypeVec[ti]);
+ OS << " " << MangleName(name, TypeVec[ti], ClassS);
// Function arguments
OS << GenArgs(Proto, TypeVec[ti]);
// Definition.
- OS << " { ";
-
- if (k != OpNone)
- OS << GenOpString(k, Proto);
+ if (define)
+ OS << " __extension__ ({ \\\n ";
else
- OS << GenBuiltin(name, Proto, TypeVec[ti]);
+ OS << " { \\\n ";
+
+ if (k != OpNone) {
+ OS << GenOpString(k, Proto, TypeVec[ti]);
+ } else {
+ if (R->getSuperClasses().size() < 2)
+ throw TGError(R->getLoc(), "Builtin has no class kind");
+
+ ClassKind ck = ClassMap[R->getSuperClasses()[1]];
- OS << " }\n";
+ if (ck == ClassNone)
+ throw TGError(R->getLoc(), "Builtin has no class kind");
+ OS << GenBuiltin(name, Proto, TypeVec[ti], ck);
+ }
+ if (define)
+ OS << " })";
+ else
+ OS << " }";
+ OS << "\n";
}
OS << "\n";
}
+ OS << "#undef __ai\n\n";
+ OS << "#endif /* __ARM_NEON_H */\n";
+}
- // TODO:
- // Unique the return+pattern types, and assign them to each record
- // Emit a #define for each unique "type" of intrinsic declaring all variants.
- // Emit a #define for each intrinsic mapping it to a particular type.
+static unsigned RangeFromType(StringRef typestr) {
+ // base type to get the type string for.
+ bool quad = false, dummy = false;
+ char type = ClassifyType(typestr, quad, dummy, dummy);
- OS << "#endif /* __ARM_NEON_H */\n";
+ switch (type) {
+ case 'c':
+ return (8 << (int)quad) - 1;
+ case 'h':
+ case 's':
+ return (4 << (int)quad) - 1;
+ case 'f':
+ case 'i':
+ return (2 << (int)quad) - 1;
+ case 'l':
+ return (1 << (int)quad) - 1;
+ default:
+ throw "unhandled type!";
+ break;
+ }
+ assert(0 && "unreachable");
+ return 0;
+}
+
+/// runHeader - Emit a file with sections defining:
+/// 1. the NEON section of BuiltinsARM.def.
+/// 2. the SemaChecking code for the type overload checking.
+/// 3. the SemaChecking code for validation of intrinsic immedate arguments.
+void NeonEmitter::runHeader(raw_ostream &OS) {
+ std::vector<Record*> RV = Records.getAllDerivedDefinitions("Inst");
+
+ StringMap<OpKind> EmittedMap;
+
+ // Generate BuiltinsARM.def for NEON
+ OS << "#ifdef GET_NEON_BUILTINS\n";
+ for (unsigned i = 0, e = RV.size(); i != e; ++i) {
+ Record *R = RV[i];
+ OpKind k = OpMap[R->getValueAsDef("Operand")->getName()];
+ if (k != OpNone)
+ continue;
+
+ std::string Proto = R->getValueAsString("Prototype");
+
+ // Functions with 'a' (the splat code) in the type prototype should not get
+ // their own builtin as they use the non-splat variant.
+ if (Proto.find('a') != std::string::npos)
+ continue;
+
+ std::string Types = R->getValueAsString("Types");
+ SmallVector<StringRef, 16> TypeVec;
+ ParseTypes(R, Types, TypeVec);
+
+ if (R->getSuperClasses().size() < 2)
+ throw TGError(R->getLoc(), "Builtin has no class kind");
+
+ std::string name = LowercaseString(R->getName());
+ ClassKind ck = ClassMap[R->getSuperClasses()[1]];
+
+ for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) {
+ // Generate the BuiltinsARM.def declaration for this builtin, ensuring
+ // that each unique BUILTIN() macro appears only once in the output
+ // stream.
+ std::string bd = GenBuiltinDef(name, Proto, TypeVec[ti], ck);
+ if (EmittedMap.count(bd))
+ continue;
+
+ EmittedMap[bd] = OpNone;
+ OS << bd << "\n";
+ }
+ }
+ OS << "#endif\n\n";
+
+ // Generate the overloaded type checking code for SemaChecking.cpp
+ OS << "#ifdef GET_NEON_OVERLOAD_CHECK\n";
+ for (unsigned i = 0, e = RV.size(); i != e; ++i) {
+ Record *R = RV[i];
+ OpKind k = OpMap[R->getValueAsDef("Operand")->getName()];
+ if (k != OpNone)
+ continue;
+
+ std::string Proto = R->getValueAsString("Prototype");
+ std::string Types = R->getValueAsString("Types");
+ std::string name = LowercaseString(R->getName());
+
+ // Functions with 'a' (the splat code) in the type prototype should not get
+ // their own builtin as they use the non-splat variant.
+ if (Proto.find('a') != std::string::npos)
+ continue;
+
+ // Functions which have a scalar argument cannot be overloaded, no need to
+ // check them if we are emitting the type checking code.
+ if (Proto.find('s') != std::string::npos)
+ continue;
+
+ SmallVector<StringRef, 16> TypeVec;
+ ParseTypes(R, Types, TypeVec);
+
+ if (R->getSuperClasses().size() < 2)
+ throw TGError(R->getLoc(), "Builtin has no class kind");
+
+ int si = -1, qi = -1;
+ unsigned mask = 0, qmask = 0;
+ for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) {
+ // Generate the switch case(s) for this builtin for the type validation.
+ bool quad = false, poly = false, usgn = false;
+ (void) ClassifyType(TypeVec[ti], quad, poly, usgn);
+
+ if (quad) {
+ qi = ti;
+ qmask |= 1 << GetNeonEnum(Proto, TypeVec[ti]);
+ } else {
+ si = ti;
+ mask |= 1 << GetNeonEnum(Proto, TypeVec[ti]);
+ }
+ }
+ if (mask)
+ OS << "case ARM::BI__builtin_neon_"
+ << MangleName(name, TypeVec[si], ClassB)
+ << ": mask = " << "0x" << utohexstr(mask) << "; break;\n";
+ if (qmask)
+ OS << "case ARM::BI__builtin_neon_"
+ << MangleName(name, TypeVec[qi], ClassB)
+ << ": mask = " << "0x" << utohexstr(qmask) << "; break;\n";
+ }
+ OS << "#endif\n\n";
+
+ // Generate the intrinsic range checking code for shift/lane immediates.
+ OS << "#ifdef GET_NEON_IMMEDIATE_CHECK\n";
+ for (unsigned i = 0, e = RV.size(); i != e; ++i) {
+ Record *R = RV[i];
+
+ OpKind k = OpMap[R->getValueAsDef("Operand")->getName()];
+ if (k != OpNone)
+ continue;
+
+ std::string name = LowercaseString(R->getName());
+ std::string Proto = R->getValueAsString("Prototype");
+ std::string Types = R->getValueAsString("Types");
+
+ // Functions with 'a' (the splat code) in the type prototype should not get
+ // their own builtin as they use the non-splat variant.
+ if (Proto.find('a') != std::string::npos)
+ continue;
+
+ // Functions which do not have an immediate do not need to have range
+ // checking code emitted.
+ if (Proto.find('i') == std::string::npos)
+ continue;
+
+ SmallVector<StringRef, 16> TypeVec;
+ ParseTypes(R, Types, TypeVec);
+
+ if (R->getSuperClasses().size() < 2)
+ throw TGError(R->getLoc(), "Builtin has no class kind");
+
+ ClassKind ck = ClassMap[R->getSuperClasses()[1]];
+
+ for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) {
+ std::string namestr, shiftstr, rangestr;
+
+ // Builtins which are overloaded by type will need to have their upper
+ // bound computed at Sema time based on the type constant.
+ if (Proto.find('s') == std::string::npos) {
+ ck = ClassB;
+ if (R->getValueAsBit("isShift")) {
+ shiftstr = ", true";
+
+ // Right shifts have an 'r' in the name, left shifts do not.
+ if (name.find('r') != std::string::npos)
+ rangestr = "l = 1; ";
+ }
+ rangestr += "u = RFT(TV" + shiftstr + ")";
+ } else {
+ rangestr = "u = " + utostr(RangeFromType(TypeVec[ti]));
+ }
+ // Make sure cases appear only once by uniquing them in a string map.
+ namestr = MangleName(name, TypeVec[ti], ck);
+ if (EmittedMap.count(namestr))
+ continue;
+ EmittedMap[namestr] = OpNone;
+
+ // Calculate the index of the immediate that should be range checked.
+ unsigned immidx = 0;
+
+ // Builtins that return a struct of multiple vectors have an extra
+ // leading arg for the struct return.
+ if (Proto[0] >= '2' && Proto[0] <= '4')
+ ++immidx;
+
+ // Add one to the index for each argument until we reach the immediate
+ // to be checked. Structs of vectors are passed as multiple arguments.
+ for (unsigned ii = 1, ie = Proto.size(); ii != ie; ++ii) {
+ switch (Proto[ii]) {
+ default: immidx += 1; break;
+ case '2': immidx += 2; break;
+ case '3': immidx += 3; break;
+ case '4': immidx += 4; break;
+ case 'i': ie = ii + 1; break;
+ }
+ }
+ OS << "case ARM::BI__builtin_neon_" << MangleName(name, TypeVec[ti], ck)
+ << ": i = " << immidx << "; " << rangestr << "; break;\n";
+ }
+ }
+ OS << "#endif\n\n";
}
projects / oota-llvm.git / blobdiff