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Native code optimizations for global arrays

This commit is contained in:
drmortalwombat 2021-12-01 23:00:57 +01:00
parent 0b9163afbe
commit a66b3873cd
1 changed files with 67 additions and 2 deletions
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69
oscar64/NativeCodeGenerator.cpp
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@ -9934,6 +9934,7 @@ bool NativeCodeBasicBlock::PeepHoleOptimizer(int pass)
progress = true;
}
}
#if 0
else if (FindGlobalAddressSumY(i, sreg, true, apos, ains, iins, flags) && iins)
{
if (mIns[i + 0].mLive & LIVE_CPU_REG_Y)
@ -9956,6 +9957,70 @@ bool NativeCodeBasicBlock::PeepHoleOptimizer(int pass)
progress = true;
}
#else
else if (FindGlobalAddressSumY(i, sreg, true, apos, ains, iins, flags))
{
if (iins || (flags & LIVE_CPU_REG_Y) || (flags & LIVE_CPU_REG_X)) //!(mIns[i + 1].mLive & LIVE_CPU_REG_X))
{
if (mIns[i + 0].mLive & LIVE_CPU_REG_Y)
{
mIns.Insert(i + 1, NativeCodeInstruction(ASMIT_LDY, ASMIM_IMMEDIATE, 0));
mIns[i + 1].mLive |= LIVE_CPU_REG_Y;
if (mIns[i + 0].mLive & LIVE_CPU_REG_Z)
{
mIns.Insert(i + 2, NativeCodeInstruction(ASMIT_ORA, ASMIM_IMMEDIATE, 0));
mIns[i + 2].mLive |= LIVE_CPU_REG_Y | LIVE_CPU_REG_Z;
}
}
if (iins || (flags & LIVE_CPU_REG_Y))
{
mIns[i + 0].mMode = ASMIM_ABSOLUTE_Y;
}
else
{
mIns[i + 0].mMode = ASMIM_ABSOLUTE_X;
}
mIns[i + 0].mLinkerObject = ains->mLinkerObject;
mIns[i + 0].mAddress = ains->mAddress;
mIns[i + 0].mFlags &= ~NCIF_YZERO;
if (!iins)
{
if (flags & LIVE_CPU_REG_Y)
{
mIns.Insert(apos, NativeCodeInstruction(ASMIT_TAY, ASMIM_IMPLIED));
mIns[apos].mLive = LIVE_CPU_REG_Y | LIVE_CPU_REG_A;
for (int j = apos; j < i + 1; j++)
mIns[j].mLive |= LIVE_CPU_REG_Y;
}
else
{
mIns.Insert(apos, NativeCodeInstruction(ASMIT_TAX, ASMIM_IMPLIED));
mIns[apos].mLive = LIVE_CPU_REG_X | LIVE_CPU_REG_A;
for (int j = apos; j < i + 1; j++)
mIns[j].mLive |= LIVE_CPU_REG_X;
}
}
else
{
if (iins->mMode != ASMIM_ZERO_PAGE)
mIns.Insert(i + 0, NativeCodeInstruction(ASMIT_LDY, iins->mMode, iins->mAddress, iins->mLinkerObject, iins->mFlags));
else if (iins->mAddress == sreg)
{
mIns.Insert(apos, NativeCodeInstruction(ASMIT_LDY, ASMIM_ZERO_PAGE, iins->mAddress));
mIns[apos].mLive = LIVE_CPU_REG_Y | LIVE_MEM;
}
else
mIns.Insert(i + 0, NativeCodeInstruction(ASMIT_LDY, ASMIM_ZERO_PAGE, iins->mAddress));
mIns[i + 0].mLive = mIns[i - 1].mLive | LIVE_CPU_REG_Y;
}
progress = true;
}
}
#endif
}
#endif
@ -10188,7 +10253,7 @@ bool NativeCodeBasicBlock::PeepHoleOptimizer(int pass)
}
else if (
mIns[i + 0].mType == ASMIT_TXA &&
mIns[i + 1].mType == ASMIT_CMP && (mIns[i + 1].mMode == ASMIM_IMMEDIATE || mIns[i + 1].mMode == ASMIM_ZERO_PAGE))
mIns[i + 1].mType == ASMIT_CMP && (mIns[i + 1].mMode == ASMIM_IMMEDIATE || mIns[i + 1].mMode == ASMIM_ZERO_PAGE || mIns[i + 1].mMode == ASMIM_ABSOLUTE))
{
mIns[i + 1].mType = ASMIT_CPX;
mIns[i + 0].mLive |= CPU_REG_X;
@ -10196,7 +10261,7 @@ bool NativeCodeBasicBlock::PeepHoleOptimizer(int pass)
}
else if (
mIns[i + 0].mType == ASMIT_TYA &&
mIns[i + 1].mType == ASMIT_CMP && (mIns[i + 1].mMode == ASMIM_IMMEDIATE || mIns[i + 1].mMode == ASMIM_ZERO_PAGE))
mIns[i + 1].mType == ASMIT_CMP && (mIns[i + 1].mMode == ASMIM_IMMEDIATE || mIns[i + 1].mMode == ASMIM_ZERO_PAGE || mIns[i + 1].mMode == ASMIM_ABSOLUTE))
{
mIns[i + 1].mType = ASMIT_CPY;
mIns[i + 0].mLive |= CPU_REG_Y;