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respect constraints specified by Assembler::plan in MoveEvent::compile

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This commit is contained in:
Joel Dice 2008-05-16 10:01:24 -06:00
parent 21c5eb2d9e
commit 790e2fee42
2 changed files with 27 additions and 7 deletions
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32
src/compiler.cpp
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@ -817,6 +817,7 @@ class VirtualSite: public AbstractSite {
if (site) {
return site;
} else {
assert(c, typeMask & (1 << RegisterOperand));
return freeRegisterSite(c, registerMask);
}
}
@ -1267,7 +1268,7 @@ class CallEvent: public Event {
} else {
target = 0;
s->pushEvent->active = true;
++ argumentFootprint;
argumentFootprint += s->size;
}
addRead(c, s->value, s->size * BytesPerWord, target);
index += s->size;
@ -1406,8 +1407,8 @@ appendReturn(Context* c, unsigned size, Value* value)
class MoveEvent: public Event {
public:
MoveEvent(Context* c, BinaryOperation type, unsigned size, Value* src,
Value* dst, Site* srcTarget):
Event(c), type(type), size(size), src(src), dst(dst)
Value* dst, Site* srcTarget, VirtualSite* dstTarget):
Event(c), type(type), size(size), src(src), dst(dst), dstTarget(dstTarget)
{
addRead(c, src, size, srcTarget);
}
@ -1429,6 +1430,9 @@ class MoveEvent: public Event {
} else {
target = targetOrRegister(c, dst);
cost = src->source->copyCost(c, target);
if (type != Move) {
++ cost;
}
if (cost == 0) {
target = src->source;
}
@ -1441,7 +1445,20 @@ class MoveEvent: public Event {
}
if (cost) {
apply(c, type, size, src->source, target);
if (match(c, target, dstTarget->typeMask, dstTarget->registerMask)) {
apply(c, type, size, src->source, target);
} else {
assert(c, dstTarget->typeMask & (1 << RegisterOperand));
Site* tmpTarget = freeRegisterSite(c, dstTarget->registerMask);
addSite(c, stack, size, dst, tmpTarget);
apply(c, type, size, src->source, tmpTarget);
apply(c, Move, max(size, BytesPerWord), tmpTarget, target);
removeSite(c, dst, tmpTarget);
}
}
if (dst->reads == 0) {
@ -1453,6 +1470,7 @@ class MoveEvent: public Event {
unsigned size;
Value* src;
Value* dst;
VirtualSite* dstTarget;
};
void
@ -1475,7 +1493,7 @@ appendMove(Context* c, BinaryOperation type, unsigned size, Value* src,
assert(c, procedure == 0); // todo
new (c->zone->allocate(sizeof(MoveEvent)))
MoveEvent(c, type, size, src, dst, srcTarget);
MoveEvent(c, type, size, src, dst, srcTarget, dstTarget);
}
class CompareEvent: public Event {
@ -1590,8 +1608,8 @@ appendCombine(Context* c, BinaryOperation type, unsigned size, Value* first,
Stack* oldStack = c->state->stack;
::push(c, size, second);
::push(c, size, first);
::push(c, size, second);
Stack* argumentStack = c->state->stack;
c->state->stack = oldStack;
@ -1690,7 +1708,7 @@ class MemoryEvent: public Event {
nextRead(c, base);
if (index) {
if (BytesPerWord == 8) {
apply(c, Move4To8, 0, index->source, index->source);
apply(c, Move4To8, 8, index->source, index->source);
}
nextRead(c, index);

2
src/x86.cpp
View File

@ -1941,6 +1941,7 @@ class MyAssembler: public Assembler {
case Divide:
if (BytesPerWord == 4 and size == 8) {
*bTypeMask = ~static_cast<uint8_t>(0);
*procedure = reinterpret_cast<uintptr_t>(divideLong);
} else {
*aRegisterMask = ~((1 << rax) | (1 << rdx));
@ -1950,6 +1951,7 @@ class MyAssembler: public Assembler {
case Remainder:
if (BytesPerWord == 4 and size == 8) {
*bTypeMask = ~static_cast<uint8_t>(0);
*procedure = reinterpret_cast<uintptr_t>(moduloLong);
} else {
*aRegisterMask = ~((1 << rax) | (1 << rdx));