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clean up MoveEvent.compile

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This commit is contained in:
Joel Dice 2008-05-17 19:26:36 -06:00
parent 85a772b0a7
commit 2bb310981d
1 changed files with 29 additions and 9 deletions
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38
src/compiler.cpp
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@ -953,8 +953,14 @@ trySteal(Context* c, Register* r, Stack* stack)
}
if (start) {
if (DebugRegisters) {
fprintf(stderr, "push %p\n", v);
}
pushNow(c, start, count);
} else {
if (DebugRegisters) {
fprintf(stderr, "unable to steal %d from %p\n", r->number, v);
}
return false;
}
}
@ -1053,6 +1059,10 @@ replace(Context* c, Stack* stack, Register* r)
Register* s = acquire(c, mask, stack, r->size, r->value, r->site);
thaw(r);
if (DebugRegisters) {
fprintf(stderr, "replace %d with %d\n", r->number, s->number);
}
swap(c, r, s);
return s;
@ -1067,8 +1077,8 @@ acquire(Context* c, uint32_t mask, Stack* stack, unsigned newSize,
if (r->reserved) return r;
if (DebugRegisters) {
fprintf(stderr, "acquire %d, value %p, site %p\n",
r->number, newValue, newSite);
fprintf(stderr, "acquire %d, value %p, site %p freeze count %d ref count %d used %d used exclusively %d\n",
r->number, newValue, newSite, r->freezeCount, r->refCount, used(c, r), usedExclusively(c, r));
}
if (r->refCount) {
@ -1118,6 +1128,8 @@ validate(Context* c, uint32_t mask, Stack* stack, unsigned size,
current->value = value;
current->site = site;
return current;
} else {
abort(c);
}
}
@ -1430,21 +1442,20 @@ 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;
}
}
nextRead(c, src);
if (target == src->source) {
nextRead(c, src);
}
if (dst->reads) {
addSite(c, stack, size, dst, target);
}
if (cost) {
if (cost or type != Move) {
if (match(c, target, dstTarget->typeMask, dstTarget->registerMask)) {
apply(c, type, size, src->source, target);
} else {
@ -1455,15 +1466,24 @@ class MoveEvent: public Event {
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) {
removeSite(c, dst, tmpTarget);
apply(c, Move, size, tmpTarget, target);
} else {
removeSite(c, dst, target);
}
}
}
if (dst->reads == 0) {
removeSite(c, dst, target);
}
if (target != src->source) {
nextRead(c, src);
}
}
BinaryOperation type;