Mercurial > projects > ldc
view dmd2/cond.h @ 1047:6bb04dbee21f
Some calling convention work for x86-64:
- Implement x86-64 extern(C), hopefully correctly.
- Tried to be a bit smarter about extern(D) while I was there.
Interestingly, this code seems to be generating more efficient code than
gcc and llvm-gcc in some edge cases, like returning a `{ [7 x i8] }` loaded from
a stack slot from an extern(C) function. (gcc generates 7 1-byte loads, while
this code generates a 4-byte, a 2-byte and a 1-byte load)
I also added some changes to make sure structs being returned from functions or
passed in as parameters are stored in memory where the rest of the backend seems
to expect them to be. These should be removed when support for first-class
aggregates improves.
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Fri, 06 Mar 2009 16:00:47 +0100 |
parents | f04dde6e882c |
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 // License for redistribution is by either the Artistic License // in artistic.txt, or the GNU General Public License in gnu.txt. // See the included readme.txt for details. #ifndef DMD_DEBCOND_H #define DMD_DEBCOND_H struct Expression; struct Identifier; struct OutBuffer; struct Module; struct Scope; struct ScopeDsymbol; #ifdef _DH #include "lexer.h" // dmdhg #endif enum TOK; #ifdef _DH struct HdrGenState; #endif int findCondition(Array *ids, Identifier *ident); struct Condition { Loc loc; int inc; // 0: not computed yet // 1: include // 2: do not include Condition(Loc loc); virtual Condition *syntaxCopy() = 0; virtual int include(Scope *sc, ScopeDsymbol *s) = 0; virtual void toCBuffer(OutBuffer *buf, HdrGenState *hgs) = 0; }; struct DVCondition : Condition { unsigned level; Identifier *ident; Module *mod; DVCondition(Module *mod, unsigned level, Identifier *ident); Condition *syntaxCopy(); }; struct DebugCondition : DVCondition { static void setGlobalLevel(unsigned level); static void addGlobalIdent(const char *ident); static void addPredefinedGlobalIdent(const char *ident); DebugCondition(Module *mod, unsigned level, Identifier *ident); int include(Scope *sc, ScopeDsymbol *s); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); }; struct VersionCondition : DVCondition { static void setGlobalLevel(unsigned level); static void checkPredefined(Loc loc, const char *ident); static void addGlobalIdent(const char *ident); static void addPredefinedGlobalIdent(const char *ident); VersionCondition(Module *mod, unsigned level, Identifier *ident); int include(Scope *sc, ScopeDsymbol *s); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); }; struct StaticIfCondition : Condition { Expression *exp; StaticIfCondition(Loc loc, Expression *exp); Condition *syntaxCopy(); int include(Scope *sc, ScopeDsymbol *s); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); }; struct IftypeCondition : Condition { /* iftype (targ id tok tspec) */ Type *targ; Identifier *id; // can be NULL enum TOK tok; // ':' or '==' Type *tspec; // can be NULL IftypeCondition(Loc loc, Type *targ, Identifier *id, enum TOK tok, Type *tspec); Condition *syntaxCopy(); int include(Scope *sc, ScopeDsymbol *s); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); }; #endif