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Use float64 instead of int64 vector elements for NEON vget_low and vget_high

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functions, since int64 is not a legal type and using it leads to inefficient
code.  PR8036.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113919 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bob Wilson 2010-09-15 01:52:33 +00:00
parent 168f382dc6
commit ee9ca07e7f
1 changed files with 19 additions and 7 deletions
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26
utils/TableGen/NeonEmitter.cpp
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@ -552,10 +552,14 @@ static std::string GenOpString(OpKind op, const std::string &proto,
}
std::string ts = TypeString(proto[0], typestr);
std::string s = ts + " r; r";
if (structTypes)
s += ".val";
std::string s;
if (op == OpHi || op == OpLo) {
s = "union { " + ts + " r; double d; } u; u.d";
} else {
s = ts + " r; r";
if (structTypes)
s += ".val";
}
s += " = ";
@ -631,10 +635,10 @@ static std::string GenOpString(OpKind op, const std::string &proto,
s += ", (__neon_int64x1_t)" + b + ", 0, 1)";
break;
case OpHi:
s += "(__neon_int64x1_t)(((__neon_int64x2_t)" + a + ")[1])";
s += "(((__neon_float64x2_t)" + a + ")[1])";
break;
case OpLo:
s += "(__neon_int64x1_t)(((__neon_int64x2_t)" + a + ")[0])";
s += "(((__neon_float64x2_t)" + a + ")[0])";
break;
case OpDup:
s += Duplicate(nElts << (int)quad, typestr, a);
@ -671,7 +675,10 @@ static std::string GenOpString(OpKind op, const std::string &proto,
throw "unknown OpKind!";
break;
}
s += "; return r;";
if (op == OpHi || op == OpLo)
s += "; return u.r;";
else
s += "; return r;";
return s;
}
@ -923,6 +930,11 @@ void NeonEmitter::run(raw_ostream &OS) {
}
}
OS << "\n";
OS << "typedef __attribute__(( __vector_size__(8) )) "
"double __neon_float64x1_t;\n";
OS << "typedef __attribute__(( __vector_size__(16) )) "
"double __neon_float64x2_t;\n";
OS << "\n";
// Emit struct typedefs.
for (unsigned vi = 1; vi != 5; ++vi) {