+/// 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();
+ int len = 0;
+
+ for (unsigned i = 0, e = s.size(); i != e; ++i, ++len) {
+ if (data[len] == 'P' || data[len] == 'Q' || data[len] == 'U')
+ continue;
+
+ switch (data[len]) {
+ case 'c':
+ case 's':
+ case 'i':
+ case 'l':
+ case 'h':
+ case 'f':
+ break;
+ default:
+ throw TGError(r->getLoc(),
+ "Unexpected letter: " + std::string(data + len, 1));
+ break;
+ }
+ TV.push_back(StringRef(data, len + 1));
+ data += len + 1;
+ len = -1;
+ }
+}
+
+/// 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 's';
+ case 's':
+ return 'i';
+ case 'i':
+ return 'l';
+ case 'h':
+ return 'f';
+ default: throw "unhandled type in widen!";
+ }
+ 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;
+
+ // remember quad.
+ if (ty[off] == 'Q') {
+ quad = true;
+ ++off;
+ }
+
+ // remember poly.
+ if (ty[off] == 'P') {
+ poly = true;
+ ++off;
+ }
+
+ // remember unsigned.
+ if (ty[off] == 'U') {
+ usgn = true;
+ ++off;
+ }
+
+ // base type to get the type string for.
+ return ty[off];
+}
+
+/// 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 't':
+ if (poly) {
+ poly = false;
+ usgn = true;
+ }
+ break;
+ 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);
+ quad = true;
+ break;
+ 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':
+ quad = true;
+ break;
+ case 'c':
+ cnst = true;
+ case 'p':
+ 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;
+
+ if (usgn)
+ s.push_back('u');
+
+ switch (type) {
+ case 'c':
+ s += poly ? "poly8" : "int8";
+ if (scal)
+ break;
+ s += quad ? "x16" : "x8";
+ break;
+ case 's':
+ s += poly ? "poly16" : "int16";
+ if (scal)
+ break;
+ s += quad ? "x8" : "x4";
+ break;
+ case 'i':
+ s += "int32";
+ if (scal)
+ break;
+ s += quad ? "x4" : "x2";
+ break;
+ case 'l':
+ s += "int64";
+ if (scal)
+ break;
+ s += quad ? "x2" : "x1";
+ break;
+ case 'h':
+ s += "float16";
+ if (scal)
+ break;
+ s += quad ? "x8" : "x4";
+ break;
+ case 'f':
+ s += "float32";
+ if (scal)
+ break;
+ s += quad ? "x4" : "x2";
+ break;
+ default:
+ throw "unhandled type!";
+ break;
+ }
+
+ if (mod == '2')
+ s += "x2";
+ if (mod == '3')
+ s += "x3";
+ if (mod == '4')
+ s += "x4";
+
+ // Append _t, finishing the type string typedef type.
+ s += "_t";
+
+ if (cnst)
+ s += " const";
+
+ if (pntr)
+ s += " *";
+
+ return s.str();
+}
+
+/// 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;
+ char type = ClassifyType(typestr, quad, poly, usgn);
+
+ std::string s = name;
+
+ switch (type) {
+ 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) {
+ size_t pos = s.find('_');
+ s = s.insert(pos, "q");
+ }
+ return s;
+}
+
+// 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) {
+ if (define) {
+ // Immediate macro arguments are used directly instead of being assigned
+ // to local temporaries; prepend an underscore prefix to make their
+ // names consistent with the local temporaries.
+ if (proto[i] == 'i')
+ s += "__";
+ } else {
+ s += TypeString(proto[i], typestr) + " __";
+ }
+ s.push_back(arg);
+ if ((i + 1) < e)
+ s += ", ";
+ }
+
+ s += ")";
+ return s;
+}
+
+// Macro arguments are not type-checked like inline function arguments, so
+// assign them to local temporaries to get the right type checking.
+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;
+}
+
+// Use the vmovl builtin to sign-extend or zero-extend a vector.
+static std::string Extend(StringRef typestr, const std::string &a) {
+ std::string s;
+ s = MangleName("vmovl", typestr, ClassS);
+ s += "(" + a + ")";
+ 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 std::string SplatLane(unsigned nElts, const std::string &vec,
+ const std::string &lane) {
+ std::string s = "__builtin_shufflevector(" + vec + ", " + vec;
+ for (unsigned i = 0; i < nElts; ++i)
+ s += ", " + lane;
+ 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.
+static std::string GenOpString(OpKind op, const std::string &proto,
+ StringRef typestr) {
+ bool quad;
+ unsigned nElts = GetNumElements(typestr, quad);
+
+ // 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;
+
+ std::string ts = TypeString(proto[0], typestr);
+ std::string s;
+ if (!define) {
+ s = "return ";
+ }
+
+ switch(op) {
+ case OpAdd:
+ s += "__a + __b;";
+ break;
+ case OpAddl:
+ s += Extend(typestr, "__a") + " + " + Extend(typestr, "__b") + ";";
+ break;
+ case OpAddw:
+ s += "__a + " + Extend(typestr, "__b") + ";";
+ break;
+ case OpSub:
+ s += "__a - __b;";
+ break;
+ case OpSubl:
+ s += Extend(typestr, "__a") + " - " + Extend(typestr, "__b") + ";";
+ break;
+ case OpSubw:
+ s += "__a - " + Extend(typestr, "__b") + ";";
+ break;
+ case OpMulN:
+ s += "__a * " + Duplicate(nElts, typestr, "__b") + ";";
+ break;
+ case OpMulLane:
+ s += "__a * " + SplatLane(nElts, "__b", "__c") + ";";
+ break;
+ case OpMul:
+ s += "__a * __b;";
+ break;
+ case OpMullN:
+ s += Extend(typestr, "__a") + " * " +
+ Extend(typestr, Duplicate(nElts << (int)quad, typestr, "__b")) + ";";
+ break;
+ case OpMullLane:
+ s += Extend(typestr, "__a") + " * " +
+ Extend(typestr, SplatLane(nElts, "__b", "__c")) + ";";
+ break;
+ case OpMull:
+ s += Extend(typestr, "__a") + " * " + Extend(typestr, "__b") + ";";
+ break;
+ case OpMlaN:
+ s += "__a + (__b * " + Duplicate(nElts, typestr, "__c") + ");";
+ break;
+ case OpMlaLane:
+ s += "__a + (__b * " + SplatLane(nElts, "__c", "__d") + ");";
+ break;
+ case OpMla:
+ s += "__a + (__b * __c);";
+ break;
+ case OpMlalN:
+ s += "__a + (" + Extend(typestr, "__b") + " * " +
+ Extend(typestr, Duplicate(nElts, typestr, "__c")) + ");";
+ break;
+ case OpMlalLane:
+ s += "__a + (" + Extend(typestr, "__b") + " * " +
+ Extend(typestr, SplatLane(nElts, "__c", "__d")) + ");";
+ break;
+ case OpMlal:
+ s += "__a + (" + Extend(typestr, "__b") + " * " +
+ Extend(typestr, "__c") + ");";
+ break;
+ case OpMlsN:
+ s += "__a - (__b * " + Duplicate(nElts, typestr, "__c") + ");";
+ break;
+ case OpMlsLane:
+ s += "__a - (__b * " + SplatLane(nElts, "__c", "__d") + ");";
+ break;
+ case OpMls:
+ s += "__a - (__b * __c);";
+ break;
+ case OpMlslN:
+ s += "__a - (" + Extend(typestr, "__b") + " * " +
+ Extend(typestr, Duplicate(nElts, typestr, "__c")) + ");";
+ break;
+ case OpMlslLane:
+ s += "__a - (" + Extend(typestr, "__b") + " * " +
+ Extend(typestr, SplatLane(nElts, "__c", "__d")) + ");";
+ break;
+ case OpMlsl:
+ s += "__a - (" + Extend(typestr, "__b") + " * " +
+ Extend(typestr, "__c") + ");";
+ break;
+ case OpQDMullLane:
+ s += MangleName("vqdmull", typestr, ClassS) + "(__a, " +
+ SplatLane(nElts, "__b", "__c") + ");";
+ break;
+ case OpQDMlalLane:
+ s += MangleName("vqdmlal", typestr, ClassS) + "(__a, __b, " +
+ SplatLane(nElts, "__c", "__d") + ");";
+ break;
+ case OpQDMlslLane:
+ s += MangleName("vqdmlsl", typestr, ClassS) + "(__a, __b, " +
+ SplatLane(nElts, "__c", "__d") + ");";
+ break;
+ case OpQDMulhLane:
+ s += MangleName("vqdmulh", typestr, ClassS) + "(__a, " +
+ SplatLane(nElts, "__b", "__c") + ");";
+ break;
+ case OpQRDMulhLane:
+ s += MangleName("vqrdmulh", typestr, ClassS) + "(__a, " +
+ SplatLane(nElts, "__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 += "(" + ts +
+ ")__builtin_shufflevector((int64x2_t)__a, (int64x2_t)__a, 1);";
+ break;
+ case OpLo:
+ s += "(" + ts +
+ ")__builtin_shufflevector((int64x2_t)__a, (int64x2_t)__a, 0);";
+ break;
+ case OpDup:
+ s += Duplicate(nElts, typestr, "__a") + ";";
+ break;
+ case OpDupLane:
+ s += SplatLane(nElts, "__a", "__b") + ";";
+ 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;
+ }
+ case OpAbdl: {
+ std::string abd = MangleName("vabd", typestr, ClassS) + "(__a, __b)";
+ if (typestr[0] != 'U') {
+ // vabd results are always unsigned and must be zero-extended.
+ std::string utype = "U" + typestr.str();
+ s += "(" + TypeString(proto[0], typestr) + ")";
+ abd = "(" + TypeString('d', utype) + ")" + abd;
+ s += Extend(utype, abd) + ";";
+ } else {
+ s += Extend(typestr, abd) + ";";
+ }
+ break;
+ }
+ case OpAba:
+ s += "__a + " + MangleName("vabd", typestr, ClassS) + "(__b, __c);";
+ break;
+ case OpAbal: {
+ s += "__a + ";
+ std::string abd = MangleName("vabd", typestr, ClassS) + "(__b, __c)";
+ if (typestr[0] != 'U') {
+ // vabd results are always unsigned and must be zero-extended.
+ std::string utype = "U" + typestr.str();
+ s += "(" + TypeString(proto[0], typestr) + ")";
+ abd = "(" + TypeString('d', utype) + ")" + abd;
+ s += Extend(utype, abd) + ";";
+ } else {
+ s += Extend(typestr, abd) + ";";
+ }
+ break;
+ }
+ default:
+ throw "unknown OpKind!";
+ break;
+ }
+ return s;
+}
+
+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;
+
+ // 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);
+
+ 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;
+
+ 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_";
+ 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) {
+ std::string args = std::string(&arg, 1);
+
+ // Use the local temporaries instead of the macro arguments.
+ 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 += ", ";
+ }
+
+ // 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;
+}
+
+static std::string GenIntrinsic(const std::string &name,
+ const std::string &proto,
+ StringRef outTypeStr, StringRef inTypeStr,
+ OpKind kind, ClassKind classKind) {
+ assert(!proto.empty() && "");
+ bool define = proto.find('i') != std::string::npos;
+ std::string s;
+
+ // static always inline + return type
+ if (define)
+ s += "#define ";
+ else
+ s += "__ai " + TypeString(proto[0], outTypeStr) + " ";
+
+ // Function name with type suffix
+ std::string mangledName = MangleName(name, outTypeStr, ClassS);
+ if (outTypeStr != inTypeStr) {
+ // If the input type is different (e.g., for vreinterpret), append a suffix
+ // for the input type. String off a "Q" (quad) prefix so that MangleName
+ // does not insert another "q" in the name.
+ unsigned typeStrOff = (inTypeStr[0] == 'Q' ? 1 : 0);
+ StringRef inTypeNoQuad = inTypeStr.substr(typeStrOff);
+ mangledName = MangleName(mangledName, inTypeNoQuad, ClassS);
+ }
+ s += mangledName;
+
+ // Function arguments
+ s += GenArgs(proto, inTypeStr);
+
+ // Definition.
+ if (define) {
+ s += " __extension__ ({ \\\n ";
+ s += GenMacroLocals(proto, inTypeStr);
+ } else {
+ s += " { \\\n ";
+ }
+
+ if (kind != OpNone)
+ s += GenOpString(kind, proto, outTypeStr);
+ else
+ s += GenBuiltin(name, proto, outTypeStr, classKind);
+ if (define)
+ s += " })";
+ else
+ s += " }";
+ 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.