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view ir/irsymbol.h @ 1491:360a8e8eea51
Teach stack promotion to walk the CFG when a potential reuse of an allocation
is found to see if it can actually happen instead of just assuming it will.
This allows it to catch cases like
{{{
int i;
Foo f;
while (cond(i))
f = new Foo(i++);
return f.value;
}}}
where it previously wouldn't because a phi using the allocation would appear in
the condition block to propagate it to the use after the loop.
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Thu, 11 Jun 2009 02:04:44 +0200 |
parents | 46f6365a50d7 |
children |
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#ifndef __LDC_IR_IRSYMBOL_H__ #define __LDC_IR_IRSYMBOL_H__ #include "ir/ir.h" /// Base class for all symbols. class IrSymbol { public: /// IrSymbol(Ir* ir) : ir(ir) {} /// Migrate symbols to current module if necessary. virtual void migrate() = 0; protected: /// Ir* ir; }; #endif