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irjit: Use enum for rounding modes.

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Unknown W. Brackets 2023-09-01 22:29:24 -07:00
parent f698623645
commit c85886c11e
3 changed files with 22 additions and 15 deletions
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10
Core/MIPS/IR/IRCompVFPU.cpp
View File

@ -1196,20 +1196,20 @@ namespace MIPSComp {
ir.Write(IROp::FCvtScaledWS, dregs[i], sregs[i], imm | (rmode << 6));
} else {
for (int i = 0; i < n; i++) {
switch (rmode) {
case 0: // vf2in
switch (IRRoundMode(rmode)) {
case IRRoundMode::RINT_0: // vf2in
ir.Write(IROp::FRound, dregs[i], sregs[i]);
break;
case 1: // vf2iz
case IRRoundMode::CAST_1: // vf2iz
ir.Write(IROp::FTrunc, dregs[i], sregs[i]);
break;
case 2: // vf2iu
case IRRoundMode::CEIL_2: // vf2iu
ir.Write(IROp::FCeil, dregs[i], sregs[i]);
break;
case 3: // vf2id
case IRRoundMode::FLOOR_3: // vf2id
ir.Write(IROp::FFloor, dregs[i], sregs[i]);
break;

7
Core/MIPS/IR/IRInst.h
View File

@ -252,6 +252,13 @@ enum class Vec4Init {
Set_0001,
};
enum class IRRoundMode : uint8_t {
RINT_0 = 0,
CAST_1 = 1,
CEIL_2 = 2,
FLOOR_3 = 3,
};
// Hm, unused
inline IRComparison Invert(IRComparison comp) {
switch (comp) {

20
Core/MIPS/IR/IRInterpreter.cpp
View File

@ -966,11 +966,11 @@ u32 IRInterpret(MIPSState *mips, const IRInst *inst, int count) {
mips->fs[inst->dest] = my_isinf(src) && src < 0.0f ? -2147483648LL : 2147483647LL;
break;
}
switch (mips->fcr31 & 3) {
case 0: mips->fs[inst->dest] = (int)round_ieee_754(src); break; // RINT_0
case 1: mips->fs[inst->dest] = (int)src; break; // CAST_1
case 2: mips->fs[inst->dest] = (int)ceilf(src); break; // CEIL_2
case 3: mips->fs[inst->dest] = (int)floorf(src); break; // FLOOR_3
switch (IRRoundMode(mips->fcr31 & 3)) {
case IRRoundMode::RINT_0: mips->fs[inst->dest] = (int)round_ieee_754(src); break;
case IRRoundMode::CAST_1: mips->fs[inst->dest] = (int)src; break;
case IRRoundMode::CEIL_2: mips->fs[inst->dest] = (int)ceilf(src); break;
case IRRoundMode::FLOOR_3: mips->fs[inst->dest] = (int)floorf(src); break;
}
break; //cvt.w.s
}
@ -994,11 +994,11 @@ u32 IRInterpret(MIPSState *mips, const IRInst *inst, int count) {
} else if (sv <= (double)(int)0x80000000) {
mips->fs[inst->dest] = 0x80000000;
} else {
switch (inst->src2 >> 6) {
case 0: mips->fs[inst->dest] = (int)round_ieee_754(sv); break;
case 1: mips->fs[inst->dest] = src >= 0 ? (int)floor(sv) : (int)ceil(sv); break;
case 2: mips->fs[inst->dest] = (int)ceil(sv); break;
case 3: mips->fs[inst->dest] = (int)floor(sv); break;
switch (IRRoundMode(inst->src2 >> 6)) {
case IRRoundMode::RINT_0: mips->fs[inst->dest] = (int)round_ieee_754(sv); break;
case IRRoundMode::CAST_1: mips->fs[inst->dest] = src >= 0 ? (int)floor(sv) : (int)ceil(sv); break;
case IRRoundMode::CEIL_2: mips->fs[inst->dest] = (int)ceil(sv); break;
case IRRoundMode::FLOOR_3: mips->fs[inst->dest] = (int)floor(sv); break;
}
}
break;