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https://github.com/c64scene-ar/llvm-6502.git
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Add generic vector support for bitselect & element byteswap
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105874 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nate Begeman
parent
11ae95c175
commit
cc3c41a9c3
@ -443,20 +443,8 @@ static std::string GenArgs(const std::string &proto, StringRef typestr) {
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return s;
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}
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static std::string Duplicate(StringRef typestr, const std::string &a) {
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bool dummy, quad = false;
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char type = ClassifyType(typestr, quad, dummy, dummy);
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unsigned nElts = 0;
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switch (type) {
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case 'c': nElts = 8; break;
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case 's': nElts = 4; break;
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case 'i': nElts = 2; break;
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case 'l': nElts = 1; break;
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case 'h': nElts = 4; break;
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case 'f': nElts = 2; break;
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}
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nElts <<= quad;
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static std::string Duplicate(unsigned nElts, StringRef typestr,
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const std::string &a) {
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std::string s;
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s = "(__neon_" + TypeString('d', typestr) + "){ ";
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@ -475,6 +463,18 @@ static std::string Duplicate(StringRef typestr, const std::string &a) {
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// than vector types, and the call becomes "a.val + b.val"
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static std::string GenOpString(OpKind op, const std::string &proto,
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StringRef typestr, bool structTypes = true) {
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bool dummy, quad = false;
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char type = ClassifyType(typestr, quad, dummy, dummy);
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unsigned nElts = 0;
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switch (type) {
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case 'c': nElts = 8; break;
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case 's': nElts = 4; break;
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case 'i': nElts = 2; break;
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case 'l': nElts = 1; break;
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case 'h': nElts = 4; break;
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case 'f': nElts = 2; break;
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}
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std::string ts = TypeString(proto[0], typestr);
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std::string s = ts + " r; r";
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@ -497,17 +497,17 @@ static std::string GenOpString(OpKind op, const std::string &proto,
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s += a + " - " + b;
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break;
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case OpMulN:
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b = Duplicate(typestr, "b");
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b = Duplicate(nElts << quad, typestr, "b");
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case OpMul:
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s += a + " * " + b;
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break;
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case OpMlaN:
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c = Duplicate(typestr, "c");
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c = Duplicate(nElts << quad, typestr, "c");
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case OpMla:
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s += a + " + ( " + b + " * " + c + " )";
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break;
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case OpMlsN:
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c = Duplicate(typestr, "c");
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c = Duplicate(nElts << quad, typestr, "c");
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case OpMls:
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s += a + " - ( " + b + " * " + c + " )";
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break;
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@ -561,7 +561,35 @@ static std::string GenOpString(OpKind op, const std::string &proto,
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s += "(__neon_int64x1_t)(((__neon_int64x2_t)" + a + ")[0])";
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break;
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case OpDup:
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s += Duplicate(typestr, a);
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s += Duplicate(nElts << quad, typestr, a);
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break;
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case OpSelect:
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// ((0 & 1) | (~0 & 2))
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ts = TypeString(proto[1], typestr);
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s += "( " + a + " & (__neon_" + ts + ")" + b + ") | ";
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s += "(~" + a + " & (__neon_" + ts + ")" + c + ")";
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break;
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case OpRev16:
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s += "__builtin_shufflevector(" + a + ", " + a;
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for (unsigned i = 2; i <= nElts << quad; i += 2)
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for (unsigned j = 0; j != 2; ++j)
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s += ", " + utostr(i - j - 1);
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s += ")";
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break;
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case OpRev32:
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nElts >>= 1;
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s += "__builtin_shufflevector(" + a + ", " + a;
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for (unsigned i = nElts; i <= nElts << (1 + quad); i += nElts)
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for (unsigned j = 0; j != nElts; ++j)
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s += ", " + utostr(i - j - 1);
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s += ")";
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break;
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case OpRev64:
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s += "__builtin_shufflevector(" + a + ", " + a;
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for (unsigned i = nElts; i <= nElts << quad; i += nElts)
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for (unsigned j = 0; j != nElts; ++j)
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s += ", " + utostr(i - j - 1);
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s += ")";
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break;
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default:
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throw "unknown OpKind!";
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@ -630,6 +658,19 @@ static unsigned GetNeonEnum(const std::string &proto, StringRef typestr) {
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static std::string GenBuiltin(const std::string &name, const std::string &proto,
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StringRef typestr, ClassKind ck,
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bool structTypes = true) {
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bool dummy, quad = false;
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char type = ClassifyType(typestr, quad, dummy, dummy);
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unsigned nElts = 0;
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switch (type) {
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case 'c': nElts = 8; break;
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case 's': nElts = 4; break;
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case 'i': nElts = 2; break;
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case 'l': nElts = 1; break;
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case 'h': nElts = 4; break;
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case 'f': nElts = 2; break;
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}
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nElts <<= quad;
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char arg = 'a';
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std::string s;
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@ -678,12 +719,15 @@ static std::string GenBuiltin(const std::string &name, const std::string &proto,
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s += "(";
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for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) {
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std::string args = std::string(&arg, 1);
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if (define)
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args = "(" + args + ")";
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// Handle multiple-vector values specially, emitting each subvector as an
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// argument to the __builtin.
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if (structTypes && (proto[i] == '2' || proto[i] == '3' || proto[i] == '4')){
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for (unsigned vi = 0, ve = proto[i] - '0'; vi != ve; ++vi) {
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s.push_back(arg);
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s += ".val[" + utostr(vi) + "]";
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s += args + ".val[" + utostr(vi) + "]";
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if ((vi + 1) < ve)
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s += ", ";
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}
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@ -693,18 +737,10 @@ static std::string GenBuiltin(const std::string &name, const std::string &proto,
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continue;
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}
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// Parenthesize the args from the macro.
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if (define)
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s.push_back('(');
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if (splat && (i + 1) == e)
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s += Duplicate(typestr, std::string(&arg, 1));
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s += Duplicate(nElts, typestr, args);
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else
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s.push_back(arg);
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// Parenthesize the args from the macro.
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if (define)
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s.push_back(')');
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s += args;
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if (structTypes && proto[i] != 's' && proto[i] != 'i' && proto[i] != 'l' &&
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proto[i] != 'p' && proto[i] != 'c' && proto[i] != 'a') {
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@ -47,7 +47,11 @@ enum OpKind {
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OpConcat,
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OpDup,
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OpHi,
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OpLo
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OpLo,
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OpSelect,
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OpRev16,
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OpRev32,
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OpRev64
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};
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enum ClassKind {
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@ -93,6 +97,10 @@ namespace llvm {
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OpMap["OP_HI"] = OpHi;
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OpMap["OP_LO"] = OpLo;
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OpMap["OP_DUP"] = OpDup;
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OpMap["OP_SEL"] = OpSelect;
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OpMap["OP_REV16"] = OpRev16;
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OpMap["OP_REV32"] = OpRev32;
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OpMap["OP_REV64"] = OpRev64;
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Record *SI = R.getClass("SInst");
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Record *II = R.getClass("IInst");
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