6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-08-22 10:29:35 +00:00
Code Issues Projects Releases Wiki Activity

Add generic vector support for bitselect & element byteswap

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105874 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nate Begeman 2010-06-12 03:09:49 +00:00
parent 11ae95c175
commit cc3c41a9c3
2 changed files with 75 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

96
utils/TableGen/NeonEmitter.cpp
View File

@ -443,20 +443,8 @@ static std::string GenArgs(const std::string &proto, StringRef typestr) {
return s;
}
static std::string Duplicate(StringRef typestr, const std::string &a) {
bool dummy, quad = false;
char type = ClassifyType(typestr, quad, dummy, dummy);
unsigned nElts = 0;
switch (type) {
case 'c': nElts = 8; break;
case 's': nElts = 4; break;
case 'i': nElts = 2; break;
case 'l': nElts = 1; break;
case 'h': nElts = 4; break;
case 'f': nElts = 2; break;
}
nElts <<= quad;
static std::string Duplicate(unsigned nElts, StringRef typestr,
const std::string &a) {
std::string s;
s = "(__neon_" + TypeString('d', typestr) + "){ ";
@ -475,6 +463,18 @@ static std::string Duplicate(StringRef typestr, const std::string &a) {
// than vector types, and the call becomes "a.val + b.val"
static std::string GenOpString(OpKind op, const std::string &proto,
StringRef typestr, bool structTypes = true) {
bool dummy, quad = false;
char type = ClassifyType(typestr, quad, dummy, dummy);
unsigned nElts = 0;
switch (type) {
case 'c': nElts = 8; break;
case 's': nElts = 4; break;
case 'i': nElts = 2; break;
case 'l': nElts = 1; break;
case 'h': nElts = 4; break;
case 'f': nElts = 2; break;
}
std::string ts = TypeString(proto[0], typestr);
std::string s = ts + " r; r";
@ -497,17 +497,17 @@ static std::string GenOpString(OpKind op, const std::string &proto,
s += a + " - " + b;
break;
case OpMulN:
b = Duplicate(typestr, "b");
b = Duplicate(nElts << quad, typestr, "b");
case OpMul:
s += a + " * " + b;
break;
case OpMlaN:
c = Duplicate(typestr, "c");
c = Duplicate(nElts << quad, typestr, "c");
case OpMla:
s += a + " + ( " + b + " * " + c + " )";
break;
case OpMlsN:
c = Duplicate(typestr, "c");
c = Duplicate(nElts << quad, typestr, "c");
case OpMls:
s += a + " - ( " + b + " * " + c + " )";
break;
@ -561,7 +561,35 @@ static std::string GenOpString(OpKind op, const std::string &proto,
s += "(__neon_int64x1_t)(((__neon_int64x2_t)" + a + ")[0])";
break;
case OpDup:
s += Duplicate(typestr, a);
s += Duplicate(nElts << quad, typestr, a);
break;
case OpSelect:
// ((0 & 1) | (~0 & 2))
ts = TypeString(proto[1], typestr);
s += "( " + a + " & (__neon_" + ts + ")" + b + ") | ";
s += "(~" + a + " & (__neon_" + ts + ")" + c + ")";
break;
case OpRev16:
s += "__builtin_shufflevector(" + a + ", " + a;
for (unsigned i = 2; i <= nElts << quad; i += 2)
for (unsigned j = 0; j != 2; ++j)
s += ", " + utostr(i - j - 1);
s += ")";
break;
case OpRev32:
nElts >>= 1;
s += "__builtin_shufflevector(" + a + ", " + a;
for (unsigned i = nElts; i <= nElts << (1 + quad); i += nElts)
for (unsigned j = 0; j != nElts; ++j)
s += ", " + utostr(i - j - 1);
s += ")";
break;
case OpRev64:
s += "__builtin_shufflevector(" + a + ", " + a;
for (unsigned i = nElts; i <= nElts << quad; i += nElts)
for (unsigned j = 0; j != nElts; ++j)
s += ", " + utostr(i - j - 1);
s += ")";
break;
default:
throw "unknown OpKind!";
@ -630,6 +658,19 @@ static unsigned GetNeonEnum(const std::string &proto, StringRef typestr) {
static std::string GenBuiltin(const std::string &name, const std::string &proto,
StringRef typestr, ClassKind ck,
bool structTypes = true) {
bool dummy, quad = false;
char type = ClassifyType(typestr, quad, dummy, dummy);
unsigned nElts = 0;
switch (type) {
case 'c': nElts = 8; break;
case 's': nElts = 4; break;
case 'i': nElts = 2; break;
case 'l': nElts = 1; break;
case 'h': nElts = 4; break;
case 'f': nElts = 2; break;
}
nElts <<= quad;
char arg = 'a';
std::string s;
@ -678,12 +719,15 @@ static std::string GenBuiltin(const std::string &name, const std::string &proto,
s += "(";
for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) {
std::string args = std::string(&arg, 1);
if (define)
args = "(" + args + ")";
// Handle multiple-vector values specially, emitting each subvector as an
// argument to the __builtin.
if (structTypes && (proto[i] == '2' || proto[i] == '3' || proto[i] == '4')){
for (unsigned vi = 0, ve = proto[i] - '0'; vi != ve; ++vi) {
s.push_back(arg);
s += ".val[" + utostr(vi) + "]";
s += args + ".val[" + utostr(vi) + "]";
if ((vi + 1) < ve)
s += ", ";
}
@ -693,18 +737,10 @@ static std::string GenBuiltin(const std::string &name, const std::string &proto,
continue;
}
// Parenthesize the args from the macro.
if (define)
s.push_back('(');
if (splat && (i + 1) == e)
s += Duplicate(typestr, std::string(&arg, 1));
s += Duplicate(nElts, typestr, args);
else
s.push_back(arg);
// Parenthesize the args from the macro.
if (define)
s.push_back(')');
s += args;
if (structTypes && proto[i] != 's' && proto[i] != 'i' && proto[i] != 'l' &&
proto[i] != 'p' && proto[i] != 'c' && proto[i] != 'a') {

10
utils/TableGen/NeonEmitter.h
View File

@ -47,7 +47,11 @@ enum OpKind {
OpConcat,
OpDup,
OpHi,
OpLo
OpLo,
OpSelect,
OpRev16,
OpRev32,
OpRev64
};
enum ClassKind {
@ -93,6 +97,10 @@ namespace llvm {
OpMap["OP_HI"] = OpHi;
OpMap["OP_LO"] = OpLo;
OpMap["OP_DUP"] = OpDup;
OpMap["OP_SEL"] = OpSelect;
OpMap["OP_REV16"] = OpRev16;
OpMap["OP_REV32"] = OpRev32;
OpMap["OP_REV64"] = OpRev64;
Record *SI = R.getClass("SInst");
Record *II = R.getClass("IInst");