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view ir/irdsymbol.cpp @ 1275:bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
It uses the machinery of the standard -simplify-libcalls pass, but optimizes
calls to the D runtime instead of calls to C libraries.
At the moment, these optimizations are implemented by this pass:
- Avoid the runtime call for `arr.length = newlen` if it can determine that
the new length isn't longer than the old one.
- Ditto for `cast(T[]) arr` if it will clearly always succeed.
(e.g. if the length of the original array is zero, or if the old element
size is a multiple of the new element size)
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Tue, 28 Apr 2009 21:58:06 +0200 |
parents | 1860414bf3b7 |
children | 229e02867307 |
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#include "gen/llvm.h" #include "ir/ir.h" #include "ir/irdsymbol.h" #include "ir/irvar.h" #include "gen/logger.h" std::set<IrDsymbol*> IrDsymbol::list; void IrDsymbol::resetAll() { Logger::println("resetting %u Dsymbols", list.size()); std::set<IrDsymbol*>::iterator it; for(it = list.begin(); it != list.end(); ++it) (*it)->reset(); } IrDsymbol::IrDsymbol() { bool incr = list.insert(this).second; assert(incr); reset(); } IrDsymbol::IrDsymbol(const IrDsymbol& s) { bool incr = list.insert(this).second; assert(incr); DModule = s.DModule; irModule = s.irModule; irStruct = s.irStruct; irFunc = s.irFunc; resolved = s.resolved; declared = s.declared; initialized = s.initialized; defined = s.defined; irGlobal = s.irGlobal; irLocal = s.irLocal; irField = s.irField; } IrDsymbol::~IrDsymbol() { list.erase(this); } void IrDsymbol::reset() { DModule = NULL; irModule = NULL; irStruct = NULL; irFunc = NULL; resolved = declared = initialized = defined = false; irGlobal = NULL; irLocal = NULL; irField = NULL; } bool IrDsymbol::isSet() { return (irStruct || irFunc || irGlobal || irLocal || irField); } IrVar* IrDsymbol::getIrVar() { assert(irGlobal || irLocal || irField); return irGlobal ? (IrVar*)irGlobal : irLocal ? (IrVar*)irLocal : (IrVar*)irField; } llvm::Value*& IrDsymbol::getIrValue() { return getIrVar()->value; }