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mips3: Revert removal of start and end checks as they potentially improve performance. (nw)

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This commit is contained in:
Ted Green 2017-10-29 15:18:00 -06:00
parent 62718818af
commit 13077ed2ae
1 changed files with 10 additions and 5 deletions
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15
src/devices/cpu/mips/mips3drc.cpp
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@ -912,11 +912,16 @@ void mips3_device::static_generate_memory_accessor(int mode, int size, int iswri
{
void *fastbase = (uint8_t *)m_fastram[ramnum].base - m_fastram[ramnum].start;
uint32_t skip = label++;
UML_CMP(block, I0, m_fastram[ramnum].end); // cmp i0,end
UML_JMPc(block, COND_A, skip); // ja skip
UML_CMP(block, I0, m_fastram[ramnum].start);// cmp i0,fastram_start
UML_JMPc(block, COND_B, skip); // jb skip
if (m_fastram[ramnum].end != 0xffffffff)
{
UML_CMP(block, I0, m_fastram[ramnum].end); // cmp i0,end
UML_JMPc(block, COND_A, skip); // ja skip
}
if (m_fastram[ramnum].start != 0x00000000)
{
UML_CMP(block, I0, m_fastram[ramnum].start);// cmp i0,fastram_start
UML_JMPc(block, COND_B, skip); // jb skip
}
if (!iswrite)
{
if (size == 1)