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arm_neon.h now makes it through clang and generates appropriate code for those functions which can use 

generic vector operators rather than __builtin_neon_*

llvm-svn: 105380
This commit is contained in:
Nate Begeman 2010-06-03 04:04:09 +00:00
parent f67fe3b1e8
commit 11d56c55c4
1 changed files with 112 additions and 19 deletions
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129
llvm/utils/TableGen/NeonEmitter.cpp
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@ -135,11 +135,13 @@ static std::string TypeString(const char mod, StringRef typestr) {
break;
case 'x':
usgn = true;
poly = false;
if (type == 'f')
type = 'i';
break;
case 'f':
type = 'f';
usgn = false;
break;
case 'w':
type = Widen(type);
@ -296,16 +298,81 @@ static std::string GenArgs(const std::string &proto, StringRef typestr) {
return s;
}
static OpKind ParseOp(Record *R) {
return OpNone;
}
// 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 structTypes = true) {
std::string s("return ");
std::string ts = TypeString(proto[0], typestr);
if (structTypes)
s += "(" + ts + "){";
std::string a = structTypes ? "a.val" : "a";
std::string b = structTypes ? "b.val" : "b";
std::string c = structTypes ? "c.val" : "c";
switch(op) {
case OpAdd:
s += a + " + " + b;
break;
case OpSub:
s += a + " - " + b;
break;
case OpMul:
s += a + " * " + b;
break;
case OpMla:
s += a + " + ( " + b + " * " + c + " )";
break;
case OpMls:
s += a + " - ( " + b + " * " + c + " )";
break;
case OpEq:
s += "(__neon_" + ts + ")(" + a + " == " + b + ")";
break;
case OpGe:
s += "(__neon_" + ts + ")(" + a + " >= " + b + ")";
break;
case OpLe:
s += "(__neon_" + ts + ")(" + a + " <= " + b + ")";
break;
case OpGt:
s += "(__neon_" + ts + ")(" + a + " > " + b + ")";
break;
case OpLt:
s += "(__neon_" + 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;
default:
throw "unknown OpKind!";
break;
}
if (structTypes)
s += "}";
s += ";";
return s;
}
// Generate the definition for this intrinsic, e.g. __builtin_neon_cls(a)
@ -314,14 +381,16 @@ static std::string GenOpString(OpKind op, const std::string &proto,
static std::string GenBuiltin(const std::string &name, const std::string &proto,
StringRef typestr, bool structTypes = true) {
char arg = 'a';
std::string s("return ");
std::string s;
// FIXME: if return type is 2/3/4, emit unioning code.
if (structTypes) {
s += "(";
s += TypeString(proto[0], typestr);
s += "){";
if (proto[0] != 'v') {
// FIXME: if return type is 2/3/4, emit unioning code.
s += "return ";
if (structTypes) {
s += "(";
s += TypeString(proto[0], typestr);
s += "){";
}
}
s += "__builtin_neon_";
@ -330,14 +399,16 @@ static std::string GenBuiltin(const std::string &name, const std::string &proto,
for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) {
s.push_back(arg);
if (structTypes)
if (structTypes && proto[i] != 's' && proto[i] != 'i' && proto[i] != 'l' &&
proto[i] != 'p' && proto[i] != 'c') {
s += ".val";
}
if ((i + 1) < e)
s += ", ";
}
s += ")";
if (structTypes)
if (proto[0] != 'v' && structTypes)
s += "}";
s += ";";
return s;
@ -359,9 +430,11 @@ void NeonEmitter::run(raw_ostream &OS) {
// Emit NEON-specific scalar typedefs.
// FIXME: probably need to do something better for polynomial types.
// FIXME: is this the correct thing to do for float16?
OS << "typedef float float32_t;\n";
OS << "typedef uint8_t poly8_t;\n";
OS << "typedef uint16_t poly16_t;\n";
OS << "typedef uint16_t float16_t;\n";
// Emit Neon vector typedefs.
std::string TypedefTypes("cQcsQsiQilQlUcQUcUsQUsUiQUiUlQUlhQhfQfPcQPcPsQPs");
@ -376,7 +449,7 @@ void NeonEmitter::run(raw_ostream &OS) {
OS << (quad ? "16) )) " : "8) )) ");
OS << TypeString('s', TDTypeVec[i]);
OS << " __neon_";
OS << TypeString('d', TDTypeVec[i]) << "\n";
OS << TypeString('d', TDTypeVec[i]) << ";\n";
}
OS << "\n";
@ -397,6 +470,26 @@ void NeonEmitter::run(raw_ostream &OS) {
std::vector<Record*> RV = Records.getAllDerivedDefinitions("Inst");
StringMap<OpKind> OpMap;
OpMap["OP_NONE"] = OpNone;
OpMap["OP_ADD"] = OpAdd;
OpMap["OP_SUB"] = OpSub;
OpMap["OP_MUL"] = OpMul;
OpMap["OP_MLA"] = OpMla;
OpMap["OP_MLS"] = OpMls;
OpMap["OP_EQ"] = OpEq;
OpMap["OP_GE"] = OpGe;
OpMap["OP_LE"] = OpLe;
OpMap["OP_GT"] = OpGt;
OpMap["OP_LT"] = OpLt;
OpMap["OP_NEG"] = OpNeg;
OpMap["OP_NOT"] = OpNot;
OpMap["OP_AND"] = OpAnd;
OpMap["OP_OR"] = OpOr;
OpMap["OP_XOR"] = OpXor;
OpMap["OP_ANDN"] = OpAndNot;
OpMap["OP_ORN"] = OpOrNot;
// Unique the return+pattern types, and assign them.
for (unsigned i = 0, e = RV.size(); i != e; ++i) {
Record *R = RV[i];
@ -407,7 +500,7 @@ void NeonEmitter::run(raw_ostream &OS) {
SmallVector<StringRef, 16> TypeVec;
ParseTypes(R, Types, TypeVec);
OpKind k = ParseOp(R);
OpKind k = OpMap[R->getValueAsDef("Operand")->getName()];
for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) {
assert(!Proto.empty() && "");
@ -425,7 +518,7 @@ void NeonEmitter::run(raw_ostream &OS) {
OS << " { ";
if (k != OpNone)
OS << GenOpString(k, Proto);
OS << GenOpString(k, Proto, TypeVec[ti]);
else
OS << GenBuiltin(name, Proto, TypeVec[ti]);