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Add some additional capabilities to the neon emitter

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llvm-svn: 105416
This commit is contained in:
Nate Begeman 2010-06-03 21:35:22 +00:00
parent ee11d1e6a5
commit 6483dc5067
1 changed files with 31 additions and 4 deletions
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35
utils/TableGen/NeonEmitter.cpp
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@ -41,7 +41,8 @@ enum OpKind {
OpOr,
OpXor,
OpAndNot,
OpOrNot
OpOrNot,
OpCast
};
static void ParseTypes(Record *r, std::string &s,
@ -85,6 +86,19 @@ static char Widen(const char t) {
return '\0';
}
static char Narrow(const char t) {
switch (t) {
case 's':
return 'c';
case 'i':
return 's';
case 'l':
return 'i';
default: throw "unhandled type in widen!";
}
return '\0';
}
static char ClassifyType(StringRef ty, bool &quad, bool &poly, bool &usgn) {
unsigned off = 0;
@ -167,6 +181,13 @@ static std::string TypeString(const char mod, StringRef typestr) {
pntr = true;
scal = true;
break;
case 'h':
type = Narrow(type);
break;
case 'e':
type = Narrow(type);
usgn = true;
break;
default:
break;
}
@ -308,9 +329,11 @@ static std::string GenOpString(OpKind op, const std::string &proto,
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";
std::string a, b, c;
if (proto.size() > 1)
a = (structTypes && proto[1] != 'l') ? "a.val" : "a";
b = structTypes ? "b.val" : "b";
c = structTypes ? "c.val" : "c";
switch(op) {
case OpAdd:
@ -364,6 +387,9 @@ static std::string GenOpString(OpKind op, const std::string &proto,
case OpOrNot:
s += a + " | ~" + b;
break;
case OpCast:
s += "(__neon_" + ts + ")" + a;
break;
default:
throw "unknown OpKind!";
break;
@ -489,6 +515,7 @@ void NeonEmitter::run(raw_ostream &OS) {
OpMap["OP_XOR"] = OpXor;
OpMap["OP_ANDN"] = OpAndNot;
OpMap["OP_ORN"] = OpOrNot;
OpMap["OP_CAST"] = OpCast;
// Unique the return+pattern types, and assign them.
for (unsigned i = 0, e = RV.size(); i != e; ++i) {