Emulator-Archive/ppsspp
1
0
Fork 0
mirror of https://github.com/hrydgard/ppsspp.git synced 2024-11-28 16:00:58 +00:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

More constant propagation

Browse Source
This commit is contained in:
Henrik Rydgard 2016-05-08 23:25:47 +02:00
parent d4480d50fd
commit c7e4658b6d
1 changed files with 37 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
Core/MIPS/IR/IRPassSimplify.cpp
View File

@ -157,6 +157,15 @@ bool PropagateConstants(const IRWriter &in, IRWriter &out) {
gpr.MapDirtyIn(inst.dest, inst.src1);
goto doDefault;
case IROp::FMovFromGPR:
if (gpr.IsImm(inst.src1)) {
out.Write(IROp::SetConstF, inst.dest, out.AddConstant(gpr.GetImm(inst.src1)));
} else {
gpr.MapIn(inst.src1);
goto doDefault;
}
break;
case IROp::MfHi:
case IROp::MfLo:
gpr.MapDirty(inst.dest);
@ -174,11 +183,18 @@ bool PropagateConstants(const IRWriter &in, IRWriter &out) {
gpr.MapIn(inst.dest);
out.Write(inst.op, inst.dest, 0, out.AddConstant(gpr.GetImm(inst.src1) + constants[inst.src2]));
} else {
// Just pass through, no excessive flushing
gpr.MapInIn(inst.dest, inst.src1);
goto doDefault;
}
break;
case IROp::StoreFloat:
if (gpr.IsImm(inst.src1)) {
out.Write(inst.op, inst.dest, 0, out.AddConstant(gpr.GetImm(inst.src1) + constants[inst.src2]));
} else {
gpr.MapIn(inst.src1);
goto doDefault;
}
break;
case IROp::Load8:
case IROp::Load8Ext:
@ -193,6 +209,26 @@ bool PropagateConstants(const IRWriter &in, IRWriter &out) {
goto doDefault;
}
break;
case IROp::LoadFloat:
if (gpr.IsImm(inst.src1)) {
out.Write(inst.op, inst.dest, 0, out.AddConstant(gpr.GetImm(inst.src1) + constants[inst.src2]));
} else {
gpr.MapIn(inst.src1);
goto doDefault;
}
break;
// FP-only instructions don't need to flush immediates.
case IROp::FAdd:
case IROp::FMul:
case IROp::FDiv:
case IROp::FSub:
case IROp::FNeg:
case IROp::FAbs:
case IROp::FSqrt:
case IROp::FMov:
out.Write(inst);
break;
case IROp::Syscall:
case IROp::Interpret: