Mercurial > projects > ldc
view dmd2/staticassert.c @ 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 | 638d16625da2 |
line wrap: on
line source
// Copyright (c) 1999-2007 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. #include <stdio.h> #include <string.h> #include <assert.h> #include "dsymbol.h" #include "staticassert.h" #include "expression.h" #include "id.h" #include "hdrgen.h" #include "scope.h" #include "template.h" /********************************* AttribDeclaration ****************************/ StaticAssert::StaticAssert(Loc loc, Expression *exp, Expression *msg) : Dsymbol(Id::empty) { this->loc = loc; this->exp = exp; this->msg = msg; } Dsymbol *StaticAssert::syntaxCopy(Dsymbol *s) { StaticAssert *sa; assert(!s); sa = new StaticAssert(loc, exp->syntaxCopy(), msg ? msg->syntaxCopy() : NULL); return sa; } int StaticAssert::addMember(Scope *sc, ScopeDsymbol *sd, int memnum) { return 0; // we didn't add anything } void StaticAssert::semantic(Scope *sc) { } void StaticAssert::semantic2(Scope *sc) { Expression *e; //printf("StaticAssert::semantic2() %s\n", toChars()); e = exp->semantic(sc); e = e->optimize(WANTvalue | WANTinterpret); if (e->isBool(FALSE)) { if (msg) { HdrGenState hgs; OutBuffer buf; msg = msg->semantic(sc); msg = msg->optimize(WANTvalue | WANTinterpret); hgs.console = 1; msg->toCBuffer(&buf, &hgs); error("%s", buf.toChars()); } else error("is false"); if(sc->tinst) sc->tinst->printInstantiationTrace(); if (!global.gag) fatal(); } else if (!e->isBool(TRUE)) { error("(%s) is not evaluatable at compile time", exp->toChars()); } } int StaticAssert::oneMember(Dsymbol **ps) { //printf("StaticAssert::oneMember())\n"); *ps = NULL; return TRUE; } void StaticAssert::inlineScan() { } void StaticAssert::toObjFile(int multiobj) { } const char *StaticAssert::kind() { return "static assert"; } void StaticAssert::toCBuffer(OutBuffer *buf, HdrGenState *hgs) { buf->writestring(kind()); buf->writeByte('('); exp->toCBuffer(buf, hgs); if (msg) { buf->writeByte(','); msg->toCBuffer(buf, hgs); } buf->writestring(");"); buf->writenl(); }