--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dmd2/mars.c	Tue Nov 11 01:38:48 2008 +0100
@@ -0,0 +1,1390 @@
+// 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.
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <assert.h>
+#include <limits.h>
+#include <string>
+#include <cstdarg>
+
+#if __DMC__
+#include <dos.h>
+#endif
+
+#if POSIX
+#include <errno.h>
+#elif _WIN32
+#include <windows.h>
+#endif
+
+#include "mem.h"
+#include "root.h"
+
+#include "mars.h"
+#include "module.h"
+#include "mtype.h"
+#include "id.h"
+#include "cond.h"
+#include "expression.h"
+#include "lexer.h"
+
+#include "gen/logger.h"
+#include "gen/linker.h"
+
+void getenv_setargv(const char *envvar, int *pargc, char** *pargv);
+
+Global global;
+
+Global::Global()
+{
+    mars_ext = "d";
+    sym_ext  = "d";
+    hdr_ext  = "di";
+    doc_ext  = "html";
+    ddoc_ext = "ddoc";
+
+// LDC
+    ll_ext  = "ll";
+    bc_ext  = "bc";
+    s_ext   = "s";
+    obj_ext = "o";
+#if _WIN32
+    obj_ext_alt = "obj";
+#endif
+
+    copyright = "Copyright (c) 1999-2008 by Digital Mars and Tomas Lindquist Olsen";
+    written = "written by Walter Bright and Tomas Lindquist Olsen";
+    version = "v2.020";
+    ldc_version = "0.1";
+    global.structalign = 8;
+
+    memset(&params, 0, sizeof(Param));
+}
+
+char *Loc::toChars() const
+{
+    OutBuffer buf;
+    char *p;
+
+    if (filename)
+    {
+	buf.printf("%s", filename);
+    }
+
+    if (linnum)
+	buf.printf("(%d)", linnum);
+    buf.writeByte(0);
+    return (char *)buf.extractData();
+}
+
+Loc::Loc(Module *mod, unsigned linnum)
+{
+    this->linnum = linnum;
+    this->filename = mod ? mod->srcfile->toChars() : NULL;
+}
+
+/**************************************
+ * Print error message and exit.
+ */
+
+void error(Loc loc, const char *format, ...)
+{
+    va_list ap;
+    va_start(ap, format);
+    verror(loc, format, ap);
+    va_end( ap );
+}
+
+void verror(Loc loc, const char *format, va_list ap)
+{
+    if (!global.gag)
+    {
+	char *p = loc.toChars();
+
+	if (*p)
+	    fprintf(stdmsg, "%s: ", p);
+	mem.free(p);
+
+	fprintf(stdmsg, "Error: ");
+	vfprintf(stdmsg, format, ap);
+	fprintf(stdmsg, "\n");
+	fflush(stdmsg);
+    }
+    global.errors++;
+}
+
+/***************************************
+ * Call this after printing out fatal error messages to clean up and exit
+ * the compiler.
+ */
+
+void fatal()
+{
+#if 0
+    halt();
+#endif
+    exit(EXIT_FAILURE);
+}
+
+/**************************************
+ * Try to stop forgetting to remove the breakpoints from
+ * release builds.
+ */
+void halt()
+{
+#ifdef DEBUG
+    *(char*)0=0;
+#endif
+}
+
+extern void backend_init();
+extern void backend_term();
+
+void usage()
+{
+    printf("LLVM D Compiler %s (based on DMD %s and LLVM 2.4svn)\n%s\n%s\n",
+    global.ldc_version, global.version, global.copyright, global.written);
+    printf("\
+D Language Documentation: http://www.digitalmars.com/d/2.0/index.html\n\
+LDC Homepage: http://www.dsource.org/projects/ldc\n\
+Usage:\n\
+  ldc files.d ... { -switch }\n\
+\n\
+  files.d        D source files\n%s\
+  -o-            do not write object file\n\
+  -od<objdir>    write object files to directory <objdir>\n\
+  -op            do not strip paths from source file\n\
+  -oq            write object files with fully qualified names\n\
+  -of<filename>  name output file to <filename>\n\
+                 if -c and extension of <filename> is known, it determines the output type\n\
+\n\
+  -output-ll     write LLVM IR\n\
+  -output-bc     write LLVM bitcode\n\
+  -output-s      write native assembly\n\
+  -output-o      write native object (default if no -output switch passed)\n\
+\n\
+  -c             do not link\n\
+  -L<linkerflag> pass <linkerflag> to linker\n\
+\n\
+  -w             enable warnings\n\
+\n\
+  -H             generate 'header' file\n\
+  -Hd<hdrdir>    write 'header' file to <hdrdir> directory\n\
+  -Hf<filename>  write 'header' file to <filename>\n\
+\n\
+  -D             generate documentation\n\
+  -Dd<docdir>    write documentation file to <docdir> directory\n\
+  -Df<filename>  write documentation file to <filename>\n\
+\n\
+Codegen control:\n\
+  -m<arch>       emit code specific to <arch> being one of:\n\
+                 x86 x86-64 ppc32 ppc64 arm thumb\n\
+  -t<os>         emit code specific to <os> being one of:\n\
+                 Linux, Windows, MacOSX, FreeBSD\n\
+\n\
+  -g, -gc        add symbolic debug info\n\
+\n\
+  -O             optimize, same as -O2\n\
+  -O<n>          optimize at level <n> (0-5)\n\
+  -inline        do function inlining\n\
+\n\
+  -debug         enables asserts, invariants, contracts, boundscheck\n\
+                 and sets debug=1\n\
+  -release       disables asserts, invariants, contracts, boundscheck\n\
+\n\
+  -enable-<feature>    and\n\
+  -disable-<feature>   where <feature> is one of\n\
+    asserts      assert statements (default: on)\n\
+    invariants   class and struct invariants (default: on)\n\
+    contracts    function contracts (default: on)\n\
+    boundscheck  array bounds checking (default: on)\n\
+  -debug=level   compile in debug stmts <= level (default: 0)\n\
+  -debug=ident   compile in debug stmts identified by ident\n\
+  -version=level compile in version code >= level\n\
+  -version=ident compile in version code identified by ident\n\
+\n\
+  -noasm         do not allow use of inline asm\n\
+  -noruntime     do not allow code that generates implicit runtime calls\n\
+  -noverify      do not run the validation pass before writing bitcode\n\
+  -unittest      compile in unit tests\n\
+  -d             allow deprecated features\n\
+\n\
+  -annotate      annotate the bitcode with human readable source code\n\
+  -ignore        ignore unsupported pragmas\n\
+\n\
+Path options:\n\
+  -I<path>       where to look for imports\n\
+  -J<path>       where to look for string imports\n\
+  -defaultlib=name  set default library for non-debug build\n\
+  -debuglib=name    set default library for debug build\n\
+  -nodefaultlib  don't add a default library for linking implicitly\n\
+\n\
+Misc options:\n\
+  -v             verbose\n\
+  -vv            very verbose (does not include -v)\n\
+  -quiet         suppress unnecessary messages\n\
+  -run srcfile args...   run resulting program, passing args\n\
+  --help         print help\n\
+",
+#if WIN32
+"  @cmdfile       read arguments from cmdfile\n"
+#else
+""
+#endif
+);
+}
+
+int main(int argc, char *argv[], char** envp)
+{
+    int i;
+    Array files;
+    char *p, *ext;
+    Module *m;
+    int status = EXIT_SUCCESS;
+    int argcstart = argc;
+    bool very_verbose = false;
+
+    // Check for malformed input
+    if (argc < 1 || !argv)
+    {
+      Largs:
+	error("missing or null command line arguments");
+	fatal();
+    }
+    for (i = 0; i < argc; i++)
+    {
+	if (!argv[i])
+	    goto Largs;
+    }
+
+#if __DMC__	// DMC unique support for response files
+    if (response_expand(&argc,&argv))	// expand response files
+	error("can't open response file");
+#endif
+
+    files.reserve(argc - 1);
+
+    // Set default values
+#if _WIN32
+	char buf[MAX_PATH];
+	GetModuleFileName(NULL, buf, MAX_PATH);
+	global.params.argv0 = buf;
+#else
+    global.params.argv0 = argv[0];
+#endif
+    global.params.link = 1;
+    global.params.useAssert = 1;
+    global.params.useInvariants = 1;
+    global.params.useIn = 1;
+    global.params.useOut = 1;
+    global.params.useArrayBounds = 1;
+    global.params.useSwitchError = 1;
+    global.params.useInline = 0; // this one messes things up to a point where codegen breaks
+    global.params.llvmInline = 0; // use this one instead to know if inline passes should be run
+    global.params.obj = 1;
+    global.params.Dversion = 2;
+    global.params.quiet = 1;
+
+    global.params.output_o = OUTPUTFLAGdefault;
+
+    global.params.linkswitches = new Array();
+    global.params.libfiles = new Array();
+    global.params.objfiles = new Array();
+    global.params.ddocfiles = new Array();
+
+    global.params.is64bit = sizeof(void*) == 8 ? 1 : 0;
+
+    uint16_t endiantest = 0xFF00;
+    uint8_t endianres = ((uint8_t*)&endiantest)[0];
+    if (endianres == 0x00)
+        global.params.isLE = true;
+    else if (endianres == 0xFF)
+        global.params.isLE = false;
+    else {
+        error("Endian test is broken");
+        fatal();
+    }
+
+    global.params.llvmArch = 0;
+    global.params.forceBE = 0;
+    global.params.noruntime = 0;
+    global.params.novalidate = 0;
+    global.params.optimizeLevel = -1;
+    global.params.runtimeImppath = 0;
+    global.params.useInlineAsm = 1;
+
+    // Predefine version identifiers
+#if IN_LLVM
+    VersionCondition::addPredefinedGlobalIdent("LLVM");
+    VersionCondition::addPredefinedGlobalIdent("LDC");
+#endif
+
+    // D2
+#if DMDV2
+    VersionCondition::addPredefinedGlobalIdent("D_Version2");
+#endif
+
+    // setup default target os to be build os
+#if _WIN32
+    global.params.os = OSWindows;
+#elif linux
+    global.params.os = OSLinux;
+#elif __APPLE__
+    global.params.os = OSMacOSX;
+#elif __FreeBSD__
+    global.params.os = OSFreeBSD;
+#else
+#error Unsupported OS
+#endif /* linux */
+
+    assert(global.params.os != OSinvalid);
+
+    //VersionCondition::addPredefinedGlobalIdent("D_Bits");
+    VersionCondition::addPredefinedGlobalIdent("all");
+
+#if _WIN32
+
+#if DMDV2
+    inifile(global.params.argv0, "ldc2.ini");
+#else
+    inifile(global.params.argv0, "ldc.ini");
+#endif
+
+#elif POSIX
+
+#if DMDV2
+    inifile(global.params.argv0, "ldc2.conf");
+#else
+    inifile(global.params.argv0, "ldc.conf");
+#endif
+
+#else
+#error
+#endif
+    getenv_setargv("DFLAGS", &argc, &argv);
+
+#if 0
+    for (i = 0; i < argc; i++)
+    {
+	printf("argv[%d] = '%s'\n", i, argv[i]);
+    }
+#endif
+
+    for (i = 1; i < argc; i++)
+    {
+	p = argv[i];
+	if (*p == '-')
+	{
+	    if (strcmp(p + 1, "d") == 0)
+		global.params.useDeprecated = 1;
+	    else if (strcmp(p + 1, "c") == 0)
+		global.params.link = 0;
+	    else if (strcmp(p + 1, "fPIC") == 0)
+		global.params.pic = 1;
+	    else if (strcmp(p + 1, "g") == 0 || strcmp(p + 1, "gc") == 0)
+		global.params.symdebug = 1;
+	    else if (strcmp(p + 1, "v") == 0)
+		global.params.verbose = 1;
+		else if (strcmp(p + 1, "vv") == 0) {
+    		Logger::enable();
+    		very_verbose = true;
+		}
+	    else if (strcmp(p + 1, "v1") == 0)
+		global.params.Dversion = 1;
+	    else if (strcmp(p + 1, "w") == 0)
+		global.params.warnings = 1;
+	    else if (p[1] == 'O')
+        {
+            global.params.optimize = 1;
+            global.params.optimizeLevel = 2;
+            if (p[2] != 0) {
+                int optlevel = atoi(p+2);
+                if (optlevel < 0 || optlevel > 5) {
+                    error("Optimization level must be between 0 and 5. Using default (%d)",
+                    global.params.optimizeLevel);
+                }
+                else {
+                    global.params.optimizeLevel = optlevel;
+                }
+            }
+        }
+        else if (strcmp(p + 1, "forcebe") == 0)
+            global.params.forceBE = 1;
+        else if (strcmp(p + 1, "noruntime") == 0)
+            global.params.noruntime = 1;
+        else if (strcmp(p + 1, "noverify") == 0)
+            global.params.novalidate = 1;
+        else if (strcmp(p + 1, "annotate") == 0)
+            global.params.llvmAnnotate = 1;
+        else if (strncmp(p + 1, "enable-", 7) == 0 ||
+                 strncmp(p + 1, "disable-", 8) == 0)
+        {
+            bool enable = (p[1] == 'e');
+            char* feature = p + 1 + (enable ? 7 : 8);
+            if (strcmp(feature, "asserts") == 0)
+                global.params.useAssert = enable;
+            else if (strcmp(feature, "boundscheck") == 0)
+                global.params.useArrayBounds = enable;
+            else if (strcmp(feature, "contracts") == 0)
+            {
+                global.params.useIn = enable;
+                global.params.useOut = enable;
+            }
+            else if (strcmp(feature, "invariants") == 0)
+                global.params.useInvariants = enable;
+            else
+                error("unrecognized feature '%s'", feature);
+        }
+        else if (strcmp(p + 1, "noasm") == 0)
+            global.params.useInlineAsm = 0;
+        else if (strcmp(p + 1, "nodefaultlib") == 0)
+            global.params.noDefaultLib = 1;
+	    else if (p[1] == 'o')
+	    {
+		switch (p[2])
+		{
+		    case '-':
+			global.params.obj = 0;
+			break;
+
+		    case 'd':
+			if (!p[3])
+			    goto Lnoarg;
+			global.params.objdir = p + 3;
+			break;
+
+		    case 'f':
+			if (!p[3])
+			    goto Lnoarg;
+			global.params.objname = p + 3;
+			break;
+
+		    case 'p':
+			if (p[3])
+			    goto Lerror;
+			global.params.preservePaths = 1;
+			break;
+
+		    case 'q':
+			if (p[3])
+			    goto Lerror;
+			global.params.fqnNames = 1;
+			break;
+
+		    case 'u':
+			if (strncmp(p+1, "output-", 7) != 0)
+			    goto Lerror;
+
+			// remove default output
+			if (global.params.output_o == OUTPUTFLAGdefault)
+			    global.params.output_o = OUTPUTFLAGno;
+
+			if (strcmp(p+8, global.ll_ext) == 0)
+			    global.params.output_ll = OUTPUTFLAGset;
+			else if (strcmp(p+8, global.bc_ext) == 0)
+			    global.params.output_bc = OUTPUTFLAGset;
+			else if (strcmp(p+8, global.s_ext) == 0)
+			    global.params.output_s = OUTPUTFLAGset;
+			else if (strcmp(p+8, global.obj_ext) == 0)
+			    global.params.output_o = OUTPUTFLAGset;
+			else
+			    goto Lerror;
+
+			break;
+
+		    case 0:
+			error("-o no longer supported, use -of or -od");
+			break;
+
+		    default:
+			goto Lerror;
+		}
+	    }
+	    else if (p[1] == 'D')
+	    {	global.params.doDocComments = 1;
+		switch (p[2])
+		{
+		    case 'd':
+			if (!p[3])
+			    goto Lnoarg;
+			global.params.docdir = p + 3;
+			break;
+		    case 'f':
+			if (!p[3])
+			    goto Lnoarg;
+			global.params.docname = p + 3;
+			break;
+
+		    case 0:
+			break;
+
+		    default:
+			goto Lerror;
+		}
+	    }
+#ifdef _DH
+	    else if (p[1] == 'H')
+	    {	global.params.doHdrGeneration = 1;
+		switch (p[2])
+		{
+		    case 'd':
+			if (!p[3])
+			    goto Lnoarg;
+			global.params.hdrdir = p + 3;
+			break;
+
+		    case 'f':
+			if (!p[3])
+			    goto Lnoarg;
+			global.params.hdrname = p + 3;
+			break;
+
+		    case 0:
+			break;
+
+		    default:
+			goto Lerror;
+		}
+	    }
+#endif
+	    else if (strcmp(p + 1, "ignore") == 0)
+		global.params.ignoreUnsupportedPragmas = 1;
+	    else if (strcmp(p + 1, "inline") == 0) {
+            // TODO
+            // the ast rewrites dmd does for inlining messes up the ast.
+            // someday maybe we can support it, for now llvm does an excellent job at inlining
+            global.params.useInline = 0; //1
+            global.params.llvmInline = 1;
+        }
+	    else if (strcmp(p + 1, "quiet") == 0)
+		global.params.quiet = 1;
+	    else if (strcmp(p + 1, "release") == 0)
+	    {
+		global.params.useInvariants = 0;
+		global.params.useIn = 0;
+		global.params.useOut = 0;
+		global.params.useAssert = 0;
+		global.params.useArrayBounds = 0;
+	    }
+	    else if (strcmp(p + 1, "unittest") == 0)
+		global.params.useUnitTests = 1;
+	    else if (p[1] == 'I')
+	    {
+		if (!global.params.imppath)
+		    global.params.imppath = new Array();
+		global.params.imppath->push(p + 2);
+	    }
+	    else if (p[1] == 'J')
+	    {
+		if (!global.params.fileImppath)
+		    global.params.fileImppath = new Array();
+		global.params.fileImppath->push(p + 2);
+	    }
+	    else if (memcmp(p + 1, "debug", 5) == 0 && p[6] != 'l')
+	    {
+		// Parse:
+		//	-debug
+		//	-debug=number
+		//	-debug=identifier
+		if (p[6] == '=')
+		{
+		    if (isdigit(p[7]))
+		    {	long level;
+
+			errno = 0;
+			level = strtol(p + 7, &p, 10);
+			if (*p || errno || level > INT_MAX)
+			    goto Lerror;
+			DebugCondition::setGlobalLevel((int)level);
+		    }
+		    else if (Lexer::isValidIdentifier(p + 7))
+			DebugCondition::addGlobalIdent(p + 7);
+		    else
+			goto Lerror;
+		}
+		else if (p[6])
+		    goto Lerror;
+		else
+		{
+		    global.params.useInvariants = 1;
+		    global.params.useIn = 1;
+		    global.params.useOut = 1;
+		    global.params.useAssert = 1;
+		    global.params.useArrayBounds = 1;
+		    global.params.debuglevel = 1;
+		}
+	    }
+	    else if (memcmp(p + 1, "version", 5) == 0)
+	    {
+		// Parse:
+		//	-version=number
+		//	-version=identifier
+		if (p[8] == '=')
+		{
+		    if (isdigit(p[9]))
+		    {	long level;
+
+			errno = 0;
+			level = strtol(p + 9, &p, 10);
+			if (*p || errno || level > INT_MAX)
+			    goto Lerror;
+			VersionCondition::setGlobalLevel((int)level);
+		    }
+		    else if (Lexer::isValidIdentifier(p + 9))
+			VersionCondition::addGlobalIdent(p + 9);
+		    else
+			goto Lerror;
+		}
+		else
+		    goto Lerror;
+	    }
+	    else if (strcmp(p + 1, "-b") == 0)
+		global.params.debugb = 1;
+	    else if (strcmp(p + 1, "-c") == 0)
+		global.params.debugc = 1;
+	    else if (strcmp(p + 1, "-f") == 0)
+		global.params.debugf = 1;
+	    else if (strcmp(p + 1, "-help") == 0)
+	    {	usage();
+		exit(EXIT_SUCCESS);
+	    }
+	    else if (strcmp(p + 1, "-r") == 0)
+		global.params.debugr = 1;
+	    else if (strcmp(p + 1, "-x") == 0)
+		global.params.debugx = 1;
+	    else if (strcmp(p + 1, "-y") == 0)
+		global.params.debugy = 1;
+	    else if (p[1] == 'L')
+	    {
+		global.params.linkswitches->push(p + 2);
+	    }
+	    else if (memcmp(p + 1, "defaultlib=", 11) == 0)
+	    {
+		if(!global.params.defaultlibnames)
+		    global.params.defaultlibnames = new Array();
+		global.params.defaultlibnames->push(p + 1 + 11);
+	    }
+	    else if (memcmp(p + 1, "debuglib=", 9) == 0)
+	    {
+		if(!global.params.debuglibnames)
+		    global.params.debuglibnames = new Array();
+		global.params.debuglibnames->push(p + 1 + 9);
+	    }
+	    else if (strcmp(p + 1, "run") == 0)
+	    {	global.params.run = 1;
+		global.params.runargs_length = ((i >= argcstart) ? argc : argcstart) - i - 1;
+		if (global.params.runargs_length)
+		{
+		    files.push(argv[i + 1]);
+		    global.params.runargs = &argv[i + 2];
+		    i += global.params.runargs_length;
+		    global.params.runargs_length--;
+		}
+		else
+		{   global.params.run = 0;
+		    goto Lnoarg;
+		}
+	    }
+        else if (p[1] == 'm')
+        {
+            global.params.llvmArch = p+2;
+        }
+        else if (p[1] == 't')
+        {
+            if(strcmp(p + 2, "Linux") == 0)
+                global.params.os = OSLinux;
+            else if(strcmp(p + 2, "Windows") == 0)
+                global.params.os = OSWindows;
+            else if(strcmp(p + 2, "MacOSX") == 0)
+                global.params.os = OSMacOSX;
+            else if(strcmp(p + 2, "FreeBSD") == 0)
+                global.params.os = OSFreeBSD;
+            else
+                error("unrecognized target os '%s'", p + 2);
+        }
+	    else
+	    {
+	     Lerror:
+		error("unrecognized switch '%s'", argv[i]);
+		continue;
+
+	     Lnoarg:
+		error("argument expected for switch '%s'", argv[i]);
+		continue;
+	    }
+	}
+	else
+	    files.push(p);
+    }
+    if (global.errors)
+    {
+	fatal();
+    }
+    if (files.dim == 0)
+    {	usage();
+	return EXIT_FAILURE;
+    }
+
+    Array* libs;
+    if (global.params.symdebug)
+	libs = global.params.debuglibnames;
+    else
+	libs = global.params.defaultlibnames;
+
+    if (libs)
+    {
+	for (int i = 0; i < libs->dim; i++)
+	{
+	    char *arg = (char *)mem.malloc(64);
+	    strcpy(arg, "-l");
+	    strncat(arg, (char *)libs->data[i], 64);
+	    global.params.linkswitches->push(arg);
+	}
+    }
+    else if (!global.params.noDefaultLib)
+    {
+#if DMDV2
+    char *arg;
+    arg = (char *)mem.malloc(64);
+    strcpy(arg, "-ldruntime-ldc");
+    global.params.linkswitches->push(arg);
+#else
+	char *arg;
+	arg = (char *)mem.malloc(64);
+	strcpy(arg, "-lldc-runtime");
+	global.params.linkswitches->push(arg);
+	arg = (char *)mem.malloc(64);
+	strcpy(arg, "-ltango-cc-tango");
+	global.params.linkswitches->push(arg);
+	arg = (char *)mem.malloc(64);
+	strcpy(arg, "-ltango-gc-basic");
+	global.params.linkswitches->push(arg);
+	// pass the runtime again to resolve issues
+	// with linking order
+	arg = (char *)mem.malloc(64);
+	strcpy(arg, "-lldc-runtime");
+	global.params.linkswitches->push(arg);
+#endif
+    }
+
+    if (global.params.run)
+	global.params.quiet = 1;
+
+    if (global.params.useUnitTests)
+	global.params.useAssert = 1;
+
+    // LDC output determination
+
+    // if we don't link, autodetect target from extension
+    if(!global.params.link && global.params.objname) {
+	ext = FileName::ext(global.params.objname);
+	bool autofound = false;
+	if (!ext) {
+	    // keep things as they are
+	} else if (strcmp(ext, global.ll_ext) == 0) {
+	    global.params.output_ll = OUTPUTFLAGset;
+	    autofound = true;
+	} else if (strcmp(ext, global.bc_ext) == 0) {
+	    global.params.output_bc = OUTPUTFLAGset;
+	    autofound = true;
+	} else if (strcmp(ext, global.s_ext) == 0) {
+	    global.params.output_s = OUTPUTFLAGset;
+	    autofound = true;
+	} else if (strcmp(ext, global.obj_ext) == 0) {
+	    global.params.output_o = OUTPUTFLAGset;
+	    autofound = true;
+	} else {
+	    // append dot, so forceExt won't change existing name even if it contains dots
+	    size_t len = strlen(global.params.objname);
+	    size_t extlen = strlen(".");
+	    char* s = (char *)mem.malloc(len + 1 + extlen + 1);
+	    memcpy(s, global.params.objname, len);
+	    s[len] = '.';
+	    s[len+1+extlen] = 0;
+	    global.params.objname = s;
+
+	}
+	if(autofound && global.params.output_o == OUTPUTFLAGdefault)
+	    global.params.output_o = OUTPUTFLAGno;
+    }
+
+    // only link if possible
+    if (!global.params.obj || !global.params.output_o)
+	global.params.link = 0;
+
+    if (global.params.link)
+    {
+	global.params.exefile = global.params.objname;
+	if (files.dim > 1)
+	    global.params.objname = NULL;
+    }
+    else if (global.params.run)
+    {
+	error("flags conflict with -run");
+	fatal();
+    }
+    else
+    {
+	if (global.params.objname && files.dim > 1)
+	{
+	    error("multiple source files, but only one .obj name");
+	    fatal();
+	}
+    }
+
+    bool allowForceEndianness = false;
+
+    if (global.params.llvmArch == 0) {
+    #if defined(__x86_64__) || defined(_M_X64)
+        global.params.llvmArch = "x86-64";
+    #elif defined(__i386__) || defined(_M_IX86)
+        global.params.llvmArch = "x86";
+    #elif defined(__ppc__) || defined(_M_PPC)
+        if (global.params.is64bit)
+            global.params.llvmArch = "ppc64";
+        else
+            global.params.llvmArch = "ppc32";
+    #elif defined(__arm__)
+        global.params.llvmArch = "arm";
+    #elif defined(__thumb__)
+        global.params.llvmArch = "thumb";
+    #else
+    #error
+    #endif
+    }
+
+    if (strcmp(global.params.llvmArch,"x86")==0) {
+        VersionCondition::addPredefinedGlobalIdent("X86");
+        global.params.isLE = true;
+        global.params.is64bit = false;
+        global.params.cpu = ARCHx86;
+        if (global.params.useInlineAsm) {
+            VersionCondition::addPredefinedGlobalIdent("LLVM_InlineAsm_X86");
+        }
+    }
+    else if (strcmp(global.params.llvmArch,"x86-64")==0) {
+        VersionCondition::addPredefinedGlobalIdent("X86_64");
+        global.params.isLE = true;
+        global.params.is64bit = true;
+        global.params.cpu = ARCHx86_64;
+        if (global.params.useInlineAsm) {
+            VersionCondition::addPredefinedGlobalIdent("LLVM_InlineAsm_X86_64");
+        }
+    }
+    else if (strcmp(global.params.llvmArch,"ppc32")==0) {
+        VersionCondition::addPredefinedGlobalIdent("PPC");
+        global.params.isLE = false;
+        global.params.is64bit = false;
+        global.params.cpu = ARCHppc;
+    }
+    else if (strcmp(global.params.llvmArch,"ppc64")==0) {
+        VersionCondition::addPredefinedGlobalIdent("PPC64");
+        global.params.isLE = false;
+        global.params.is64bit = true;
+        global.params.cpu = ARCHppc_64;
+    }
+    else if (strcmp(global.params.llvmArch,"arm")==0) {
+        VersionCondition::addPredefinedGlobalIdent("ARM");
+        global.params.isLE = true;
+        global.params.is64bit = false;
+        global.params.cpu = ARCHarm;
+    }
+    else if (strcmp(global.params.llvmArch,"thumb")==0) {
+        VersionCondition::addPredefinedGlobalIdent("Thumb");
+        global.params.isLE = true;
+        global.params.is64bit = false;
+        global.params.cpu = ARCHthumb;
+    }
+    else {
+        assert(0 && "Invalid arch");
+    }
+
+    assert(global.params.cpu != ARCHinvalid);
+
+    if (allowForceEndianness && global.params.forceBE) {
+        VersionCondition::addPredefinedGlobalIdent("BigEndian");
+        global.params.isLE = false;
+    }
+    else if (global.params.isLE) {
+        VersionCondition::addPredefinedGlobalIdent("LittleEndian");
+    }
+    else {
+        VersionCondition::addPredefinedGlobalIdent("BigEndian");
+    }
+
+    if (global.params.is64bit) {
+        VersionCondition::addPredefinedGlobalIdent("LLVM64");
+    }
+
+
+    // setup version idents and tt_os for chosen target os
+    switch(global.params.os)
+    {
+    case OSWindows:
+	VersionCondition::addPredefinedGlobalIdent("Windows");
+	VersionCondition::addPredefinedGlobalIdent("Win32");
+	VersionCondition::addPredefinedGlobalIdent("mingw32");
+	break;
+
+    case OSLinux:
+	VersionCondition::addPredefinedGlobalIdent("linux");
+	VersionCondition::addPredefinedGlobalIdent("Posix");
+	break;
+
+    case OSMacOSX:
+	VersionCondition::addPredefinedGlobalIdent("darwin");
+    VersionCondition::addPredefinedGlobalIdent("Posix");
+    break;
+
+    case OSFreeBSD:
+    VersionCondition::addPredefinedGlobalIdent("freebsd");
+    VersionCondition::addPredefinedGlobalIdent("Posix");
+    break;
+
+    default:
+	assert(false && "Target OS not supported");
+    }
+
+    if (!global.params.targetTriple)
+        global.params.targetTriple = DEFAULT_TARGET_TRIPLE;
+
+    Logger::println("Target triple: %s", global.params.targetTriple);
+
+    // build a minimal data layout so llvm can find the target
+    global.params.dataLayout = global.params.isLE
+        ? (char*)(global.params.is64bit ? "e-p:64:64" : "e-p:32:32")
+        : (char*)(global.params.is64bit ? "E-p:64:64" : "E-p:32:32");
+    Logger::println("Layout: %s", global.params.dataLayout);
+
+    // Initialization
+    Type::init();
+    Id::initialize();
+    Module::init();
+    initPrecedence();
+
+    backend_init();
+
+    //printf("%d source files\n",files.dim);
+
+    // Build import search path
+    if (global.params.imppath)
+    {
+	for (i = 0; i < global.params.imppath->dim; i++)
+	{
+	    char *path = (char *)global.params.imppath->data[i];
+	    Array *a = FileName::splitPath(path);
+
+	    if (a)
+	    {
+		if (!global.path)
+		    global.path = new Array();
+		global.path->append(a);
+	    }
+	}
+    }
+
+    // Build string import search path
+    if (global.params.fileImppath)
+    {
+	for (i = 0; i < global.params.fileImppath->dim; i++)
+	{
+	    char *path = (char *)global.params.fileImppath->data[i];
+	    Array *a = FileName::splitPath(path);
+
+	    if (a)
+	    {
+		if (!global.filePath)
+		    global.filePath = new Array();
+		global.filePath->append(a);
+	    }
+	}
+    }
+
+    // Create Modules
+    Array modules;
+    modules.reserve(files.dim);
+    for (i = 0; i < files.dim; i++)
+    {	Identifier *id;
+	char *ext;
+	char *name;
+
+	p = (char *) files.data[i];
+
+	p = FileName::name(p);		// strip path
+	ext = FileName::ext(p);
+	if (ext)
+	{
+#if TARGET_LINUX
+	    if (strcmp(ext, global.obj_ext) == 0 ||
+		strcmp(ext, global.bc_ext) == 0)
+#else
+	    if (stricmp(ext, global.obj_ext) == 0 ||
+		stricmp(ext, global.bc_ext) == 0)
+#endif
+	    {
+		global.params.objfiles->push(files.data[i]);
+		continue;
+	    }
+
+#if TARGET_LINUX || __MINGW32__
+	    if (strcmp(ext, "a") == 0)
+#else
+	    if (stricmp(ext, "lib") == 0)
+#endif
+	    {
+		global.params.libfiles->push(files.data[i]);
+		continue;
+	    }
+
+	    if (strcmp(ext, global.ddoc_ext) == 0)
+	    {
+		global.params.ddocfiles->push(files.data[i]);
+		continue;
+	    }
+
+#if !TARGET_LINUX
+	    if (stricmp(ext, "res") == 0)
+	    {
+		global.params.resfile = (char *)files.data[i];
+		continue;
+	    }
+
+	    if (stricmp(ext, "def") == 0)
+	    {
+		global.params.deffile = (char *)files.data[i];
+		continue;
+	    }
+
+	    if (stricmp(ext, "exe") == 0)
+	    {
+		global.params.exefile = (char *)files.data[i];
+		continue;
+	    }
+#endif
+
+	    if (stricmp(ext, global.mars_ext) == 0 ||
+        stricmp(ext, global.hdr_ext) == 0 ||
+		stricmp(ext, "htm") == 0 ||
+		stricmp(ext, "html") == 0 ||
+		stricmp(ext, "xhtml") == 0)
+	    {
+		ext--;			// skip onto '.'
+		assert(*ext == '.');
+		name = (char *)mem.malloc((ext - p) + 1);
+		memcpy(name, p, ext - p);
+		name[ext - p] = 0;		// strip extension
+
+		if (name[0] == 0 ||
+		    strcmp(name, "..") == 0 ||
+		    strcmp(name, ".") == 0)
+		{
+		Linvalid:
+		    error("invalid file name '%s'", (char *)files.data[i]);
+		    fatal();
+		}
+	    }
+	    else
+	    {	error("unrecognized file extension %s\n", ext);
+		fatal();
+	    }
+	}
+	else
+	{   name = p;
+	    if (!*name)
+		goto Linvalid;
+	}
+
+	id = new Identifier(name, 0);
+	m = new Module((char *) files.data[i], id, global.params.doDocComments, global.params.doHdrGeneration);
+	modules.push(m);
+    }
+
+    // Read files, parse them
+    for (i = 0; i < modules.dim; i++)
+    {
+	m = (Module *)modules.data[i];
+	if (global.params.verbose)
+	    printf("parse     %s\n", m->toChars());
+	if (!Module::rootModule)
+	    Module::rootModule = m;
+	m->importedFrom = m;
+	m->read(0);
+	m->parse();
+	m->buildTargetFiles();
+	m->deleteObjFile();
+	if (m->isDocFile)
+	{
+	    m->gendocfile();
+
+	    // Remove m from list of modules
+	    modules.remove(i);
+	    i--;
+	}
+    }
+    if (global.errors)
+	fatal();
+#ifdef _DH
+    if (global.params.doHdrGeneration)
+    {
+	/* Generate 'header' import files.
+	 * Since 'header' import files must be independent of command
+	 * line switches and what else is imported, they are generated
+	 * before any semantic analysis.
+	 */
+	for (i = 0; i < modules.dim; i++)
+	{
+	    m = (Module *)modules.data[i];
+	    if (global.params.verbose)
+		printf("import    %s\n", m->toChars());
+	    m->genhdrfile();
+	}
+    }
+    if (global.errors)
+	fatal();
+#endif
+
+    // Do semantic analysis
+    for (i = 0; i < modules.dim; i++)
+    {
+	m = (Module *)modules.data[i];
+	if (global.params.verbose)
+	    printf("semantic  %s\n", m->toChars());
+	m->semantic();
+    }
+    if (global.errors)
+	fatal();
+
+    // Do pass 2 semantic analysis
+    for (i = 0; i < modules.dim; i++)
+    {
+	m = (Module *)modules.data[i];
+	if (global.params.verbose)
+	    printf("semantic2 %s\n", m->toChars());
+	m->semantic2();
+    }
+    if (global.errors)
+	fatal();
+
+    // Do pass 3 semantic analysis
+    for (i = 0; i < modules.dim; i++)
+    {
+	m = (Module *)modules.data[i];
+	if (global.params.verbose)
+	    printf("semantic3 %s\n", m->toChars());
+	m->semantic3();
+    }
+    if (global.errors)
+	fatal();
+
+#if !IN_LLVM
+    // Scan for functions to inline
+    if (global.params.useInline)
+    {
+	/* The problem with useArrayBounds and useAssert is that the
+	 * module being linked to may not have generated them, so if
+	 * we inline functions from those modules, the symbols for them will
+	 * not be found at link time.
+	 */
+	if (!global.params.useArrayBounds && !global.params.useAssert)
+	{
+#endif
+	    // Do pass 3 semantic analysis on all imported modules,
+	    // since otherwise functions in them cannot be inlined
+	    for (i = 0; i < Module::amodules.dim; i++)
+	    {
+		m = (Module *)Module::amodules.data[i];
+		if (global.params.verbose)
+		    printf("semantic3 %s\n", m->toChars());
+		m->semantic3();
+	    }
+	    if (global.errors)
+		fatal();
+#if !IN_LLVM
+	}
+
+	for (i = 0; i < modules.dim; i++)
+	{
+	    m = (Module *)modules.data[i];
+	    if (global.params.verbose)
+		printf("inline scan %s\n", m->toChars());
+	    m->inlineScan();
+	}
+    }
+    if (global.errors)
+	fatal();
+#endif
+
+    // Generate output files
+    for (i = 0; i < modules.dim; i++)
+    {
+	m = (Module *)modules.data[i];
+	if (global.params.verbose)
+	    printf("code      %s\n", m->toChars());
+	if (global.params.obj)
+	{
+	    m->genobjfile(0, envp);
+	    global.params.objfiles->push(m->objfile->name->str);
+	}
+	if (global.errors)
+	    m->deleteObjFile();
+	else
+	{
+	    if (global.params.doDocComments)
+		m->gendocfile();
+	}
+    }
+
+    backend_term();
+    if (global.errors)
+	fatal();
+
+    if (!global.params.objfiles->dim)
+    {
+	if (global.params.link)
+	    error("no object files to link");
+    }
+    else
+    {
+	if (global.params.link)
+	    //status = runLINK();
+        linkObjToExecutable(global.params.argv0);
+
+	if (global.params.run)
+	{
+	    if (!status)
+	    {
+		status = runExectuable();
+
+		/* Delete .obj files and .exe file
+		 */
+		for (i = 0; i < modules.dim; i++)
+		{
+		    m = (Module *)modules.data[i];
+		    m->deleteObjFile();
+		}
+		deleteExecutable();
+	    }
+	}
+    }
+
+    return status;
+}
+
+
+
+/***********************************
+ * Parse and append contents of environment variable envvar
+ * to argc and argv[].
+ * The string is separated into arguments, processing \ and ".
+ */
+
+void getenv_setargv(const char *envvar, int *pargc, char** *pargv)
+{
+    char *env;
+    char *p;
+    Array *argv;
+    int argc;
+
+    int wildcard;		// do wildcard expansion
+    int instring;
+    int slash;
+    char c;
+    int j;
+
+    env = getenv(envvar);
+    if (!env)
+	return;
+
+    env = mem.strdup(env);	// create our own writable copy
+
+    argc = *pargc;
+    argv = new Array();
+    argv->setDim(argc);
+
+    for (int i = 0; i < argc; i++)
+	argv->data[i] = (void *)(*pargv)[i];
+
+    j = 1;			// leave argv[0] alone
+    while (1)
+    {
+	wildcard = 1;
+	switch (*env)
+	{
+	    case ' ':
+	    case '\t':
+		env++;
+		break;
+
+	    case 0:
+		goto Ldone;
+
+	    case '"':
+		wildcard = 0;
+	    default:
+		argv->push(env);		// append
+		//argv->insert(j, env);		// insert at position j
+		j++;
+		argc++;
+		p = env;
+		slash = 0;
+		instring = 0;
+		c = 0;
+
+		while (1)
+		{
+		    c = *env++;
+		    switch (c)
+		    {
+			case '"':
+			    p -= (slash >> 1);
+			    if (slash & 1)
+			    {	p--;
+				goto Laddc;
+			    }
+			    instring ^= 1;
+			    slash = 0;
+			    continue;
+
+			case ' ':
+			case '\t':
+			    if (instring)
+				goto Laddc;
+			    *p = 0;
+			    //if (wildcard)
+				//wildcardexpand();	// not implemented
+			    break;
+
+			case '\\':
+			    slash++;
+			    *p++ = c;
+			    continue;
+
+			case 0:
+			    *p = 0;
+			    //if (wildcard)
+				//wildcardexpand();	// not implemented
+			    goto Ldone;
+
+			default:
+			Laddc:
+			    slash = 0;
+			    *p++ = c;
+			    continue;
+		    }
+		    break;
+		}
+	}
+    }
+
+Ldone:
+    *pargc = argc;
+    *pargv = (char **)argv->data;
+}