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Add the last of the SemaChecking-gen code.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105929 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nate Begeman 2010-06-14 05:17:23 +00:00
parent c125fedcc7
commit 918f8e4ab0
1 changed files with 45 additions and 2 deletions
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47
utils/TableGen/NeonEmitter.cpp
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@ -946,6 +946,28 @@ void NeonEmitter::run(raw_ostream &OS) {
OS << "#endif /* __ARM_NEON_H */\n";
}
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);
switch (type) {
case 'c':
return (8 << quad) - 1;
case 'h':
case 's':
return (4 << quad) - 1;
case 'f':
case 'i':
return (2 << quad) - 1;
case 'l':
return (1 << quad) - 1;
default:
throw "unhandled type!";
break;
}
}
/// runHeader - generate one of three different tables which are used by clang
/// to support ARM NEON codegen. By default, this will produce the contents of
/// BuiltinsARM.def's NEON section. You may also enable the genSemaTypes or
@ -1020,11 +1042,32 @@ void NeonEmitter::runHeader(raw_ostream &OS) {
}
if (genSemaRange) {
if (Proto.find('s') == std::string::npos)
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.
namestr = MangleName(name, TypeVec[ti], ck);
if (EmittedMap.count(namestr))
continue;
EmittedMap[namestr] = OpNone;
OS << "case ARM::BI__builtin_neon_"
<< MangleName(name, TypeVec[ti], ck) << "\n";
<< MangleName(name, TypeVec[ti], ck) << ": i = " << Proto.find('i')-1
<< "; " << rangestr << "; break;\n";
continue;
}