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reuse source site as destination site if appropriate in getTarget

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This commit is contained in:
Joel Dice 2009-03-14 14:17:32 -06:00
parent 54b691f4de
commit 8d9409112c
1 changed files with 5 additions and 11 deletions
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16
src/compiler.cpp
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@ -2833,24 +2833,18 @@ preserve(Context* c, Value* v, Site* s, Read* r)
s->thaw(c, v);
}
void
maybePreserve(Context* c, Value* v, Site* s)
{
Read* r = liveNext(c, v);
if (r and not hasMoreThanOneSite(v)) {
preserve(c, v, s, r);
}
}
Site*
getTarget(Context* c, Value* value, Value* result, const SiteMask& resultMask)
{
Site* s;
Value* v;
if (c->arch->condensedAddressing()) {
Read* r = liveNext(c, value);
if (c->arch->condensedAddressing() or r == 0) {
s = value->source;
v = value;
maybePreserve(c, value, s);
if (r and not hasMoreThanOneSite(v)) {
preserve(c, v, s, r);
}
} else {
SingleRead r(resultMask);
s = pickTargetSite(c, &r, true);