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clang codegen support

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105531 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nate Begeman 2010-06-07 16:00:37 +00:00
parent 3a4340d4cb
commit b0a4e4554e
1 changed files with 83 additions and 73 deletions
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156
utils/TableGen/NeonEmitter.cpp
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@ -100,24 +100,9 @@ static char ClassifyType(StringRef ty, bool &quad, bool &poly, bool &usgn) {
return ty[off];
}
static std::string TypeString(const char mod, StringRef typestr,
bool ret = false) {
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.
static char ModType(const char mod, char type, bool &quad, bool &poly,
bool &usgn, bool &scal, bool &cnst, bool &pntr) {
switch (mod) {
case 'v':
return "void";
case 'i':
return "int";
case 't':
if (poly) {
poly = false;
@ -155,6 +140,8 @@ static std::string TypeString(const char mod, StringRef typestr,
case 'c':
cnst = true;
case 'p':
usgn = false;
poly = false;
pntr = true;
scal = true;
break;
@ -168,6 +155,28 @@ static std::string TypeString(const char mod, StringRef typestr,
default:
break;
}
return type;
}
static std::string TypeString(const char mod, StringRef typestr,
bool ret = false) {
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;
@ -256,60 +265,11 @@ static std::string BuiltinTypeString(const char mod, StringRef typestr,
char type = ClassifyType(typestr, quad, poly, usgn);
// Based on the modifying character, change the type and width if necessary.
switch (mod) {
case 't':
if (poly) {
poly = false;
usgn = true;
}
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);
quad = true;
break;
case 'n':
type = Widen(type);
break;
case 'l':
type = 'l';
scal = true;
usgn = true;
break;
case 's':
scal = true;
break;
case 'k':
quad = true;
break;
case 'c':
cnst = true;
case 'p':
type = 'v';
usgn = false;
poly = false;
pntr = true;
scal = true;
break;
case 'h':
type = Narrow(type);
break;
case 'e':
type = Narrow(type);
usgn = true;
break;
default:
break;
}
type = ModType(mod, type, quad, poly, usgn, scal, cnst, pntr);
if (pntr)
type = 'v';
if (type == 'h') {
type = 's';
usgn = true;
@ -534,6 +494,57 @@ static std::string GenOpString(OpKind op, const std::string &proto,
return s;
}
static unsigned GetNeonEnum(const std::string &proto, StringRef typestr) {
unsigned mod = proto[0];
unsigned ret = 0;
if (mod == 'v')
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)
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)
// If structTypes is true, the NEON types are structs of vector types rather
// than vector types, and the call becomes __builtin_neon_cls(a.val)
@ -599,9 +610,8 @@ static std::string GenBuiltin(const std::string &name, const std::string &proto,
}
// Extra constant integer to hold type class enum for this function, e.g. s8
// FIXME: emit actual type num.
if (ck == ClassB)
s += ", 0";
s += ", " + utostr(GetNeonEnum(proto, typestr));
s += ");";