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Merge pull request #539 from Gutawer/asmjit

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Added exact floating point comparison opcodes
This commit is contained in:
Magnus Norddahl 2018-08-14 22:33:37 +02:00 committed by GitHub
commit 1a52c2ba00
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 117 additions and 18 deletions
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135
src/scripting/vm/jit.cpp
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@ -226,23 +226,17 @@ template <typename Func>
void emitComparisonOpcode(asmjit::X86Compiler& cc, const TArray<asmjit::Label>& labels, const VMOP* pc, int i, Func compFunc) {
using namespace asmjit;
Label elseLabel = cc.newLabel();
auto tmp = cc.newInt32();
auto tmp0 = cc.newInt32();
auto tmp1 = cc.newInt32();
compFunc(tmp);
compFunc(tmp0);
bool check = static_cast<bool>(A & CMP_CHECK);
cc.mov(tmp1, A);
cc.and_(tmp1, CMP_CHECK);
cc.cmp(tmp0, tmp1);
cc.jne(elseLabel);
cc.test(tmp, tmp);
if (check) cc.je (labels[i + 2]);
else cc.jne(labels[i + 2]);
cc.jmp(labels[i + 2 + JMPOFS(pc + 1)]);
cc.bind(elseLabel);
cc.jmp(labels[i + 2]);
}
JitFuncPtr JitCompile(VMScriptFunction *sfunc)
@ -979,8 +973,8 @@ JitFuncPtr JitCompile(VMScriptFunction *sfunc)
{
auto compLambda = [&](X86Gp& result) {
auto tmp = cc.newIntPtr();
cc.mov(tmp, reinterpret_cast<ptrdiff_t>(&(konstd[C])));
cc.cmp(x86::ptr(tmp), regD[B]);
cc.mov(tmp, reinterpret_cast<ptrdiff_t>(&(konstd[B])));
cc.cmp(x86::ptr(tmp), regD[C]);
cc.setl(result);
};
emitComparisonOpcode(cc, labels, pc, i, compLambda);
@ -1011,8 +1005,8 @@ JitFuncPtr JitCompile(VMScriptFunction *sfunc)
{
auto compLambda = [&](X86Gp& result) {
auto tmp = cc.newIntPtr();
cc.mov(tmp, reinterpret_cast<ptrdiff_t>(&(konstd[C])));
cc.cmp(x86::ptr(tmp), regD[B]);
cc.mov(tmp, reinterpret_cast<ptrdiff_t>(&(konstd[B])));
cc.cmp(x86::ptr(tmp), regD[C]);
cc.setle(result);
};
emitComparisonOpcode(cc, labels, pc, i, compLambda);
@ -1043,8 +1037,8 @@ JitFuncPtr JitCompile(VMScriptFunction *sfunc)
{
auto compLambda = [&](X86Gp& result) {
auto tmp = cc.newIntPtr();
cc.mov(tmp, reinterpret_cast<ptrdiff_t>(&(konstd[C])));
cc.cmp(x86::ptr(tmp), regD[B]);
cc.mov(tmp, reinterpret_cast<ptrdiff_t>(&(konstd[B])));
cc.cmp(x86::ptr(tmp), regD[C]);
cc.setb(result);
};
emitComparisonOpcode(cc, labels, pc, i, compLambda);
@ -1162,13 +1156,118 @@ JitFuncPtr JitCompile(VMScriptFunction *sfunc)
case OP_ATAN2: // fA = atan2(fB,fC), result is in degrees
case OP_FLOP: // fA = f(fB), where function is selected by C
case OP_EQF_R: // if ((fB == fkC) != (A & 1)) then pc++
{
auto compLambda = [&](X86Gp& result) {
auto tmp = cc.newInt32();
cc.ucomisd(regF[B], regF[C]);
cc.sete(result);
cc.setnp(tmp);
cc.and_(result, tmp);
cc.and_(result, 1);
};
emitComparisonOpcode(cc, labels, pc, i, compLambda);
break;
}
case OP_EQF_K:
{
auto compLambda = [&](X86Gp& result) {
auto konstTmp = cc.newIntPtr();
auto parityTmp = cc.newInt32();
cc.mov(konstTmp, reinterpret_cast<ptrdiff_t>(&(konstf[C])));
cc.ucomisd(regF[B], x86::qword_ptr(konstTmp));
cc.sete(result);
cc.setnp(parityTmp);
cc.and_(result, parityTmp);
cc.and_(result, 1);
};
emitComparisonOpcode(cc, labels, pc, i, compLambda);
break;
}
case OP_LTF_RR: // if ((fkB < fkC) != (A & 1)) then pc++
{
auto compLambda = [&](X86Gp& result) {
cc.ucomisd(regF[C], regF[B]);
cc.seta(result);
cc.and_(result, 1);
};
emitComparisonOpcode(cc, labels, pc, i, compLambda);
break;
}
case OP_LTF_RK:
{
auto compLambda = [&](X86Gp& result) {
auto constTmp = cc.newIntPtr();
auto xmmTmp = cc.newXmmSd();
cc.mov(constTmp, reinterpret_cast<ptrdiff_t>(&(konstf[C])));
cc.movsd(xmmTmp, x86::qword_ptr(constTmp));
cc.ucomisd(xmmTmp, regF[B]);
cc.seta(result);
cc.and_(result, 1);
};
emitComparisonOpcode(cc, labels, pc, i, compLambda);
break;
}
case OP_LTF_KR:
{
auto compLambda = [&](X86Gp& result) {
auto tmp = cc.newIntPtr();
cc.mov(tmp, reinterpret_cast<ptrdiff_t>(&(konstf[B])));
cc.ucomisd(regF[C], x86::qword_ptr(tmp));
cc.seta(result);
cc.and_(result, 1);
};
emitComparisonOpcode(cc, labels, pc, i, compLambda);
break;
}
case OP_LEF_RR: // if ((fkb <= fkC) != (A & 1)) then pc++
{
auto compLambda = [&](X86Gp& result) {
cc.ucomisd(regF[C], regF[B]);
cc.setae(result);
cc.and_(result, 1);
};
emitComparisonOpcode(cc, labels, pc, i, compLambda);
break;
}
case OP_LEF_RK:
{
auto compLambda = [&](X86Gp& result) {
auto constTmp = cc.newIntPtr();
auto xmmTmp = cc.newXmmSd();
cc.mov(constTmp, reinterpret_cast<ptrdiff_t>(&(konstf[C])));
cc.movsd(xmmTmp, x86::qword_ptr(constTmp));
cc.ucomisd(xmmTmp, regF[B]);
cc.setae(result);
cc.and_(result, 1);
};
emitComparisonOpcode(cc, labels, pc, i, compLambda);
break;
}
case OP_LEF_KR:
{
auto compLambda = [&](X86Gp& result) {
auto tmp = cc.newIntPtr();
cc.mov(tmp, reinterpret_cast<ptrdiff_t>(&(konstf[B])));
cc.ucomisd(regF[C], x86::qword_ptr(tmp));
cc.setae(result);
cc.and_(result, 1);
};
emitComparisonOpcode(cc, labels, pc, i, compLambda);
break;
}
break;
// Vector math. (2D)