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release base and index values of AbstractMemoryValue if necessary; bugfixes

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This commit is contained in:
Joel Dice 2008-03-15 14:44:14 -06:00
parent 6bf0ca5bd9
commit 8141fc21b4
1 changed files with 22 additions and 6 deletions
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28
src/compiler.cpp
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@ -380,7 +380,7 @@ class RegisterValue: public Value {
}
}
virtual void release(Context* c, MyOperand* a UNUSED) {
virtual void release(Context* c, MyOperand* a) {
if (a == c->registers[register_.low].operand) {
fprintf(stderr, "%p release %d\n", a, register_.low);
@ -486,6 +486,20 @@ class AbstractMemoryValue: public MemoryValue {
base_(base), index_(index)
{ }
virtual void preserve(Context* c, Stack* s, MyOperand*) {
base_->value->preserve(c, s, base_);
if (index_) {
index_->value->preserve(c, s, index_);
}
}
virtual void release(Context* c, MyOperand*) {
base_->value->release(c, base_);
if (index_) {
index_->value->release(c, index_);
}
}
virtual int base(Context* c) {
return ::toRegister(c, base_);
}
@ -628,9 +642,11 @@ class ArgumentEvent: public Event {
if (a->target == 0) {
apply(c, Push, size, a->value);
a->value = 0;
} else if (not a->target->equals(c, a->value)) {
a->target->preserve(c, stack, a);
apply(c, Move, size, a->value, a->target);
} else {
if (not a->target->equals(c, a->value)) {
a->target->preserve(c, stack, a);
apply(c, Move, size, a->value, a->target);
}
a->value->release(c, a);
}
}
@ -911,10 +927,10 @@ class PopEvent: public Event {
target = freeRegister(c, BytesPerWord * stack->size, false);
}
target->acquire(c, 0, dst);
apply(c, Pop, BytesPerWord * stack->size, target);
target->acquire(c, 0, dst);
dst->value = target;
}
}