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view dmd2/irstate.h @ 1499:df11cdec45a2
Another shot at fixing the issues with (constant) struct literals and their addresses. See DMD2682, #218, #324.
The idea is to separate the notion of const from 'this variable can always be
replaced with its initializer' in the frontend. To do that, I introduced
Declaration::isSameAsInitializer, which is overridden in VarDeclaration to
return false for constants that have a struct literal initializer.
So
{{{
const S s = S(5);
void foo() { auto ps = &s; }
// is no longer replaced by
void foo() { auto ps = &(S(5)); }
}}}
To make taking the address of a struct constant with a struct-initializer
outside of function scope possible, I made sure that AddrExp::optimize doesn't
try to run the argument's optimization with WANTinterpret - that'd again
replace the constant with a struct literal temporary.
author | Christian Kamm <kamm incasoftware de> |
---|---|
date | Sun, 14 Jun 2009 19:49:58 +0200 |
parents | 638d16625da2 |
children |
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// Compiler implementation of the D programming language // Copyright (c) 1999-2008 by Digital Mars // All Rights Reserved // written by Walter Bright // http://www.digitalmars.com #ifndef DMD_CONTEXT_H #define DMD_CONTEXT_H #ifdef __DMC__ #pragma once #endif /* __DMC__ */ struct Module; struct Statement; struct block; struct Dsymbol; struct Identifier; struct Symbol; struct FuncDeclaration; struct Blockx; struct Array; struct elem; struct IRState { IRState *prev; Statement *statement; Module *m; // module Dsymbol *symbol; Identifier *ident; Symbol *shidden; // hidden parameter to function Symbol *sthis; // 'this' parameter to function (member and nested) Symbol *sclosure; // pointer to closure instance Blockx *blx; Array *deferToObj; // array of Dsymbol's to run toObjFile(int multiobj) on later elem *ehidden; // transmit hidden pointer to CallExp::toElem() Symbol *startaddress; block *breakBlock; block *contBlock; block *switchBlock; block *defaultBlock; IRState(IRState *irs, Statement *s); IRState(IRState *irs, Dsymbol *s); IRState(Module *m, Dsymbol *s); block *getBreakBlock(Identifier *ident); block *getContBlock(Identifier *ident); block *getSwitchBlock(); block *getDefaultBlock(); FuncDeclaration *getFunc(); }; #endif /* DMD_CONTEXT_H */