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Do not GC-allocate temporary for static array initialization.

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This commit is contained in:
David Nadlinger
2013-10-09 01:05:46 +02:00
parent 9866e5a14f
commit eb3261f93c
1 changed files with 20 additions and 0 deletions
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20
gen/toir.cpp
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@@ -508,6 +508,26 @@ DValue* AssignExp::toElem(IRState* p)
}
}
if (e1->op == TOKslice)
{
// Check if this is an initialization of a static array with an array
// literal that the frontend has foolishly rewritten into an
// assignment of a dynamic array literal to a slice.
Logger::println("performing static array literal assignment");
SliceExp * const se = static_cast<SliceExp *>(e1);
Type * const t2 = e2->type->toBasetype();
Type * const ta = se->e1->type->toBasetype();
if (se->lwr == NULL && ta->ty == Tsarray &&
e2->op == TOKarrayliteral &&
t2->nextOf()->mutableOf()->implicitConvTo(ta->nextOf()))
{
ArrayLiteralExp * const ale = static_cast<ArrayLiteralExp *>(e2);
initializeArrayLiteral(p, ale, se->e1->toElem(p)->getLVal());
return e1->toElem(p);
}
}
DValue* l = e1->toElem(p);
DValue* r = e2->toElem(p);