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jit-ir: Less instructions cause flushing in constant propagation.

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This commit is contained in:
Henrik Rydgard 2016-05-08 22:54:07 +02:00
parent 5dbac165f4
commit d4480d50fd
3 changed files with 42 additions and 1 deletions
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36
Core/MIPS/IR/IRPassSimplify.cpp
View File

@ -62,7 +62,7 @@ bool PropagateConstants(const IRWriter &in, IRWriter &out) {
bool symmetric = true;
if (out.GetConstants().size() > 128) {
// Avoid causing a constant explosion.
goto doDefault;
goto doDefaultAndFlush;
}
switch (inst.op) {
case IROp::SetConst:
@ -134,6 +134,39 @@ bool PropagateConstants(const IRWriter &in, IRWriter &out) {
}
break;
case IROp::Mult:
case IROp::MultU:
gpr.MapInIn(inst.src1, inst.src2);
goto doDefault;
case IROp::MovZ:
case IROp::MovNZ:
gpr.MapInInIn(inst.dest, inst.src1, inst.src2);
goto doDefault;
case IROp::Min:
case IROp::Max:
gpr.MapDirtyInIn(inst.dest, inst.src1, inst.src2);
goto doDefault;
case IROp::Clz:
case IROp::BSwap16:
case IROp::BSwap32:
case IROp::Ext16to32:
case IROp::Ext8to32:
gpr.MapDirtyIn(inst.dest, inst.src1);
goto doDefault;
case IROp::MfHi:
case IROp::MfLo:
gpr.MapDirty(inst.dest);
goto doDefault;
case IROp::MtHi:
case IROp::MtLo:
gpr.MapIn(inst.src1);
goto doDefault;
case IROp::Store8:
case IROp::Store16:
case IROp::Store32:
@ -175,6 +208,7 @@ bool PropagateConstants(const IRWriter &in, IRWriter &out) {
case IROp::ExitToConstIfLtZ:
default:
{
doDefaultAndFlush:
gpr.FlushAll();
doDefault:
// Remap constants to the new reality

6
Core/MIPS/IR/IRRegCache.cpp
View File

@ -45,6 +45,12 @@ void IRRegCache::MapInIn(int rs, int rt) {
Flush(rt);
}
void IRRegCache::MapInInIn(int rd, int rs, int rt) {
Flush(rd);
Flush(rs);
Flush(rt);
}
void IRRegCache::MapDirtyIn(int rd, int rs) {
if (rs != rd) {
Discard(rd);

1
Core/MIPS/IR/IRRegCache.h
View File

@ -35,6 +35,7 @@ public:
void MapDirty(int rd);
void MapIn(int rd);
void MapInIn(int rs, int rt);
void MapInInIn(int rd, int rs, int rt);
void MapDirtyIn(int rd, int rs);
void MapDirtyInIn(int rd, int rs, int rt);