/* Wrapper to call lto. Used by collect2 and the linker plugin.
- Copyright (C) 2009-2014 Free Software Foundation, Inc.
+ Copyright (C) 2009-2015 Free Software Foundation, Inc.
Factored out of collect2 by Rafael Espindola <espindola@google.com>
#include "opts.h"
#include "options.h"
#include "simple-object.h"
+#include "lto-section-names.h"
+#include "collect-utils.h"
-/* From lto-streamer.h which we cannot include with -fkeep-inline-functions.
- ??? Split out a lto-streamer-core.h. */
-
-#define LTO_SECTION_NAME_PREFIX ".gnu.lto_"
-
-/* End of lto-streamer.h copy. */
-
-int debug; /* true if -save-temps. */
-int verbose; /* true if -v. */
+/* Environment variable, used for passing the names of offload targets from GCC
+ driver to lto-wrapper. */
+#define OFFLOAD_TARGET_NAMES_ENV "OFFLOAD_TARGET_NAMES"
enum lto_mode_d {
LTO_MODE_NONE, /* Not doing LTO. */
static char *ltrans_output_file;
static char *flto_out;
-static char *args_name;
static unsigned int nr;
static char **input_names;
static char **output_names;
+static char **offload_names;
+static const char *offloadbegin, *offloadend;
static char *makefile;
-static void maybe_unlink_file (const char *);
+const char tool_name[] = "lto-wrapper";
- /* Delete tempfiles. */
+/* Delete tempfiles. Called from utils_cleanup. */
-static void
-lto_wrapper_cleanup (void)
+void
+tool_cleanup (bool)
{
- static bool cleanup_done = false;
unsigned int i;
- if (cleanup_done)
- return;
-
- /* Setting cleanup_done prevents an infinite loop if one of the
- calls to maybe_unlink_file fails. */
- cleanup_done = true;
-
if (ltrans_output_file)
- maybe_unlink_file (ltrans_output_file);
+ maybe_unlink (ltrans_output_file);
if (flto_out)
- maybe_unlink_file (flto_out);
- if (args_name)
- maybe_unlink_file (args_name);
+ maybe_unlink (flto_out);
if (makefile)
- maybe_unlink_file (makefile);
+ maybe_unlink (makefile);
for (i = 0; i < nr; ++i)
{
- maybe_unlink_file (input_names[i]);
+ maybe_unlink (input_names[i]);
if (output_names[i])
- maybe_unlink_file (output_names[i]);
+ maybe_unlink (output_names[i]);
}
}
static void
-fatal_signal (int signum)
-{
- signal (signum, SIG_DFL);
- lto_wrapper_cleanup ();
- /* Get the same signal again, this time not handled,
- so its normal effect occurs. */
- kill (getpid (), signum);
-}
-
-/* Just die. CMSGID is the error message. */
-
-static void __attribute__ ((format (printf, 1, 2)))
-fatal (const char * cmsgid, ...)
-{
- va_list ap;
-
- va_start (ap, cmsgid);
- fprintf (stderr, "lto-wrapper: ");
- vfprintf (stderr, _(cmsgid), ap);
- fprintf (stderr, "\n");
- va_end (ap);
-
- lto_wrapper_cleanup ();
- exit (FATAL_EXIT_CODE);
-}
-
-
-/* Die when sys call fails. CMSGID is the error message. */
-
-static void __attribute__ ((format (printf, 1, 2)))
-fatal_perror (const char *cmsgid, ...)
-{
- int e = errno;
- va_list ap;
-
- va_start (ap, cmsgid);
- fprintf (stderr, "lto-wrapper: ");
- vfprintf (stderr, _(cmsgid), ap);
- fprintf (stderr, ": %s\n", xstrerror (e));
- va_end (ap);
-
- lto_wrapper_cleanup ();
- exit (FATAL_EXIT_CODE);
-}
-
-
-/* Execute a program, and wait for the reply. ARGV are the arguments. The
- last one must be NULL. */
-
-static struct pex_obj *
-collect_execute (char **argv)
-{
- struct pex_obj *pex;
- const char *errmsg;
- int err;
-
- if (verbose)
- {
- char **p_argv;
- const char *str;
-
- for (p_argv = argv; (str = *p_argv) != (char *) 0; p_argv++)
- fprintf (stderr, " %s", str);
-
- fprintf (stderr, "\n");
- }
-
- fflush (stdout);
- fflush (stderr);
-
- pex = pex_init (0, "lto-wrapper", NULL);
- if (pex == NULL)
- fatal_perror ("pex_init failed");
-
- /* Do not use PEX_LAST here, we use our stdout for communicating with
- collect2 or the linker-plugin. Any output from the sub-process
- will confuse that. */
- errmsg = pex_run (pex, PEX_SEARCH, argv[0], argv, NULL,
- NULL, &err);
- if (errmsg != NULL)
- {
- if (err != 0)
- {
- errno = err;
- fatal_perror (errmsg);
- }
- else
- fatal (errmsg);
- }
-
- return pex;
-}
-
-
-/* Wait for a process to finish, and exit if a nonzero status is found.
- PROG is the program name. PEX is the process we should wait for. */
-
-static int
-collect_wait (const char *prog, struct pex_obj *pex)
+lto_wrapper_cleanup (void)
{
- int status;
-
- if (!pex_get_status (pex, 1, &status))
- fatal_perror ("can't get program status");
- pex_free (pex);
-
- if (status)
- {
- if (WIFSIGNALED (status))
- {
- int sig = WTERMSIG (status);
- if (WCOREDUMP (status))
- fatal ("%s terminated with signal %d [%s], core dumped",
- prog, sig, strsignal (sig));
- else
- fatal ("%s terminated with signal %d [%s]",
- prog, sig, strsignal (sig));
- }
-
- if (WIFEXITED (status))
- fatal ("%s returned %d exit status", prog, WEXITSTATUS (status));
- }
-
- return 0;
+ utils_cleanup (false);
}
-
/* Unlink a temporary LTRANS file unless requested otherwise. */
-static void
-maybe_unlink_file (const char *file)
+void
+maybe_unlink (const char *file)
{
- if (! debug)
+ if (!save_temps)
{
if (unlink_if_ordinary (file)
&& errno != ENOENT)
- fatal_perror ("deleting LTRANS file %s", file);
+ fatal_error (input_location, "deleting LTRANS file %s: %m", file);
}
else if (verbose)
fprintf (stderr, "[Leaving LTRANS %s]\n", file);
}
-
-/* Execute program ARGV[0] with arguments ARGV. Wait for it to finish. */
-
-static void
-fork_execute (char **argv)
-{
- struct pex_obj *pex;
- char *new_argv[3];
- char *at_args;
- FILE *args;
- int status;
-
- args_name = make_temp_file (".args");
- at_args = concat ("@", args_name, NULL);
- args = fopen (args_name, "w");
- if (args == NULL)
- fatal ("failed to open %s", args_name);
-
- status = writeargv (&argv[1], args);
-
- if (status)
- fatal ("could not write to temporary file %s", args_name);
-
- fclose (args);
-
- new_argv[0] = argv[0];
- new_argv[1] = at_args;
- new_argv[2] = NULL;
-
- pex = collect_execute (new_argv);
- collect_wait (new_argv[0], pex);
-
- maybe_unlink_file (args_name);
- args_name = NULL;
- free (at_args);
-}
-
/* Template of LTRANS dumpbase suffix. */
#define DUMPBASE_SUFFIX ".ltrans18446744073709551615"
do
{
if (argv_storage[j] == '\0')
- fatal ("malformed COLLECT_GCC_OPTIONS");
+ fatal_error (input_location, "malformed COLLECT_GCC_OPTIONS");
else if (strncmp (&argv_storage[j], "'\\''", 4) == 0)
{
argv_storage[k++] = '\'';
/* Fallthru. */
case OPT_fPIC:
case OPT_fpic:
+ case OPT_fPIE:
case OPT_fpie:
case OPT_fcommon:
case OPT_fexceptions:
(*decoded_options)[j] = *foption;
break;
+ case OPT_fmath_errno:
+ case OPT_fsigned_zeros:
+ case OPT_ftrapping_math:
case OPT_fwrapv:
+ case OPT_fopenmp:
+ case OPT_fopenacc:
/* For selected options we can merge conservatively. */
for (j = 0; j < *decoded_options_count; ++j)
if ((*decoded_options)[j].opt_index == foption->opt_index)
break;
if (j == *decoded_options_count)
append_option (decoded_options, decoded_options_count, foption);
- /* -fwrapv > -fno-wrapv. */
+ /* -fmath-errno > -fno-math-errno,
+ -fsigned-zeros > -fno-signed-zeros,
+ -ftrapping-math -> -fno-trapping-math,
+ -fwrapv > -fno-wrapv. */
else if (foption->value > (*decoded_options)[j].value)
(*decoded_options)[j] = *foption;
break;
if ((*decoded_options)[j].opt_index == foption->opt_index)
break;
if (j == *decoded_options_count)
- fatal ("Option %s not used consistently in all LTO input files",
- foption->orig_option_with_args_text);
+ fatal_error (input_location,
+ "Option %s not used consistently in all LTO input"
+ " files", foption->orig_option_with_args_text);
+ break;
+
+ case OPT_foffload_abi_:
+ for (j = 0; j < *decoded_options_count; ++j)
+ if ((*decoded_options)[j].opt_index == foption->opt_index)
+ break;
+ if (j == *decoded_options_count)
+ append_option (decoded_options, decoded_options_count, foption);
+ else if (foption->value != (*decoded_options)[j].value)
+ fatal_error (input_location,
+ "Option %s not used consistently in all LTO input"
+ " files", foption->orig_option_with_args_text);
break;
case OPT_O:
}
(*decoded_options)[j].opt_index = OPT_O;
char *tem;
- asprintf (&tem, "-O%d", level);
+ tem = xasprintf ("-O%d", level);
(*decoded_options)[j].arg = &tem[2];
(*decoded_options)[j].canonical_option[0] = tem;
(*decoded_options)[j].value = 1;
}
break;
+
+ case OPT_foffload_:
+ append_option (decoded_options, decoded_options_count, foption);
+ break;
+ }
+ }
+}
+
+/* Auxiliary function that frees elements of PTR and PTR itself.
+ N is number of elements to be freed. If PTR is NULL, nothing is freed.
+ If an element is NULL, subsequent elements are not freed. */
+
+static void **
+free_array_of_ptrs (void **ptr, unsigned n)
+{
+ if (!ptr)
+ return NULL;
+ for (unsigned i = 0; i < n; i++)
+ {
+ if (!ptr[i])
+ break;
+ free (ptr[i]);
+ }
+ free (ptr);
+ return NULL;
+}
+
+/* Parse STR, saving found tokens into PVALUES and return their number.
+ Tokens are assumed to be delimited by ':'. If APPEND is non-null,
+ append it to every token we find. */
+
+static unsigned
+parse_env_var (const char *str, char ***pvalues, const char *append)
+{
+ const char *curval, *nextval;
+ char **values;
+ unsigned num = 1, i;
+
+ curval = strchr (str, ':');
+ while (curval)
+ {
+ num++;
+ curval = strchr (curval + 1, ':');
+ }
+
+ values = (char**) xmalloc (num * sizeof (char*));
+ curval = str;
+ nextval = strchr (curval, ':');
+ if (nextval == NULL)
+ nextval = strchr (curval, '\0');
+
+ int append_len = append ? strlen (append) : 0;
+ for (i = 0; i < num; i++)
+ {
+ int l = nextval - curval;
+ values[i] = (char*) xmalloc (l + 1 + append_len);
+ memcpy (values[i], curval, l);
+ values[i][l] = 0;
+ if (append)
+ strcat (values[i], append);
+ curval = nextval + 1;
+ nextval = strchr (curval, ':');
+ if (nextval == NULL)
+ nextval = strchr (curval, '\0');
+ }
+ *pvalues = values;
+ return num;
+}
+
+/* Append options OPTS from lto or offload_lto sections to ARGV_OBSTACK. */
+
+static void
+append_compiler_options (obstack *argv_obstack, struct cl_decoded_option *opts,
+ unsigned int count)
+{
+ /* Append compiler driver arguments as far as they were merged. */
+ for (unsigned int j = 1; j < count; ++j)
+ {
+ struct cl_decoded_option *option = &opts[j];
+
+ /* File options have been properly filtered by lto-opts.c. */
+ switch (option->opt_index)
+ {
+ /* Drop arguments that we want to take from the link line. */
+ case OPT_flto_:
+ case OPT_flto:
+ case OPT_flto_partition_:
+ continue;
+
+ default:
+ break;
+ }
+
+ /* For now do what the original LTO option code was doing - pass
+ on any CL_TARGET flag and a few selected others. */
+ switch (option->opt_index)
+ {
+ case OPT_fPIC:
+ case OPT_fpic:
+ case OPT_fPIE:
+ case OPT_fpie:
+ case OPT_fcommon:
+ case OPT_fexceptions:
+ case OPT_fnon_call_exceptions:
+ case OPT_fgnu_tm:
+ case OPT_freg_struct_return:
+ case OPT_fpcc_struct_return:
+ case OPT_fshort_double:
+ case OPT_ffp_contract_:
+ case OPT_fmath_errno:
+ case OPT_fsigned_zeros:
+ case OPT_ftrapping_math:
+ case OPT_fwrapv:
+ case OPT_fopenmp:
+ case OPT_fopenacc:
+ case OPT_ftrapv:
+ case OPT_fstrict_overflow:
+ case OPT_foffload_abi_:
+ case OPT_O:
+ case OPT_Ofast:
+ case OPT_Og:
+ case OPT_Os:
+ break;
+
+ default:
+ if (!(cl_options[option->opt_index].flags & CL_TARGET))
+ continue;
}
+
+ /* Pass the option on. */
+ for (unsigned int i = 0; i < option->canonical_option_num_elements; ++i)
+ obstack_ptr_grow (argv_obstack, option->canonical_option[i]);
}
}
+/* Append linker options OPTS to ARGV_OBSTACK. */
+
+static void
+append_linker_options (obstack *argv_obstack, struct cl_decoded_option *opts,
+ unsigned int count)
+{
+ /* Append linker driver arguments. Compiler options from the linker
+ driver arguments will override / merge with those from the compiler. */
+ for (unsigned int j = 1; j < count; ++j)
+ {
+ struct cl_decoded_option *option = &opts[j];
+
+ /* Do not pass on frontend specific flags not suitable for lto. */
+ if (!(cl_options[option->opt_index].flags
+ & (CL_COMMON|CL_TARGET|CL_DRIVER|CL_LTO)))
+ continue;
+
+ switch (option->opt_index)
+ {
+ case OPT_o:
+ case OPT_flto_:
+ case OPT_flto:
+ /* We've handled these LTO options, do not pass them on. */
+ continue;
+
+ case OPT_freg_struct_return:
+ case OPT_fpcc_struct_return:
+ case OPT_fshort_double:
+ /* Ignore these, they are determined by the input files.
+ ??? We fail to diagnose a possible mismatch here. */
+ continue;
+
+ default:
+ break;
+ }
+
+ /* Pass the option on. */
+ for (unsigned int i = 0; i < option->canonical_option_num_elements; ++i)
+ obstack_ptr_grow (argv_obstack, option->canonical_option[i]);
+ }
+}
+
+/* Extract options for TARGET offload compiler from OPTIONS and append
+ them to ARGV_OBSTACK. */
+
+static void
+append_offload_options (obstack *argv_obstack, const char *target,
+ struct cl_decoded_option *options,
+ unsigned int options_count)
+{
+ for (unsigned i = 0; i < options_count; i++)
+ {
+ const char *cur, *next, *opts;
+ char **argv;
+ unsigned argc;
+ struct cl_decoded_option *option = &options[i];
+
+ if (option->opt_index != OPT_foffload_)
+ continue;
+
+ /* If option argument starts with '-' then no target is specified. That
+ means offload options are specified for all targets, so we need to
+ append them. */
+ if (option->arg[0] == '-')
+ opts = option->arg;
+ else
+ {
+ opts = strchr (option->arg, '=');
+ if (!opts)
+ continue;
+
+ cur = option->arg;
+
+ while (cur < opts)
+ {
+ next = strchr (cur, ',');
+ if (next == NULL)
+ next = opts;
+ next = (next > opts) ? opts : next;
+
+ if (strlen (target) == (size_t) (next - cur)
+ && strncmp (target, cur, next - cur) == 0)
+ break;
+
+ cur = next + 1;
+ }
+
+ if (cur >= opts)
+ continue;
+
+ opts++;
+ }
+
+ argv = buildargv (opts);
+ for (argc = 0; argv[argc]; argc++)
+ obstack_ptr_grow (argv_obstack, argv[argc]);
+ }
+}
+
+/* Check whether NAME can be accessed in MODE. This is like access,
+ except that it never considers directories to be executable. */
+
+static int
+access_check (const char *name, int mode)
+{
+ if (mode == X_OK)
+ {
+ struct stat st;
+
+ if (stat (name, &st) < 0
+ || S_ISDIR (st.st_mode))
+ return -1;
+ }
+
+ return access (name, mode);
+}
+
+/* Prepare a target image for offload TARGET, using mkoffload tool from
+ COMPILER_PATH. Return the name of the resultant object file. */
+
+static char *
+compile_offload_image (const char *target, const char *compiler_path,
+ unsigned in_argc, char *in_argv[],
+ struct cl_decoded_option *compiler_opts,
+ unsigned int compiler_opt_count,
+ struct cl_decoded_option *linker_opts,
+ unsigned int linker_opt_count)
+{
+ char *filename = NULL;
+ char **argv;
+ char *suffix
+ = XALLOCAVEC (char, sizeof ("/accel//mkoffload") + strlen (target));
+ strcpy (suffix, "/accel/");
+ strcat (suffix, target);
+ strcat (suffix, "/mkoffload");
+
+ char **paths = NULL;
+ unsigned n_paths = parse_env_var (compiler_path, &paths, suffix);
+
+ const char *compiler = NULL;
+ for (unsigned i = 0; i < n_paths; i++)
+ if (access_check (paths[i], X_OK) == 0)
+ {
+ compiler = paths[i];
+ break;
+ }
+
+ if (compiler)
+ {
+ /* Generate temporary output file name. */
+ filename = make_temp_file (".target.o");
+
+ struct obstack argv_obstack;
+ obstack_init (&argv_obstack);
+ obstack_ptr_grow (&argv_obstack, compiler);
+ obstack_ptr_grow (&argv_obstack, "-o");
+ obstack_ptr_grow (&argv_obstack, filename);
+
+ /* Append names of input object files. */
+ for (unsigned i = 0; i < in_argc; i++)
+ obstack_ptr_grow (&argv_obstack, in_argv[i]);
+
+ /* Append options from offload_lto sections. */
+ append_compiler_options (&argv_obstack, compiler_opts,
+ compiler_opt_count);
+
+ /* Append options specified by -foffload last. In case of conflicting
+ options we expect offload compiler to choose the latest. */
+ append_offload_options (&argv_obstack, target, compiler_opts,
+ compiler_opt_count);
+ append_offload_options (&argv_obstack, target, linker_opts,
+ linker_opt_count);
+
+ obstack_ptr_grow (&argv_obstack, NULL);
+ argv = XOBFINISH (&argv_obstack, char **);
+ fork_execute (argv[0], argv, true);
+ obstack_free (&argv_obstack, NULL);
+ }
+
+ free_array_of_ptrs ((void **) paths, n_paths);
+ return filename;
+}
+
+
+/* The main routine dealing with offloading.
+ The routine builds a target image for each offload target. IN_ARGC and
+ IN_ARGV specify options and input object files. As all of them could contain
+ target sections, we pass them all to target compilers. */
+
+static void
+compile_images_for_offload_targets (unsigned in_argc, char *in_argv[],
+ struct cl_decoded_option *compiler_opts,
+ unsigned int compiler_opt_count,
+ struct cl_decoded_option *linker_opts,
+ unsigned int linker_opt_count)
+{
+ char **names = NULL;
+ const char *target_names = getenv (OFFLOAD_TARGET_NAMES_ENV);
+ if (!target_names)
+ return;
+ unsigned num_targets = parse_env_var (target_names, &names, NULL);
+
+ const char *compiler_path = getenv ("COMPILER_PATH");
+ if (!compiler_path)
+ goto out;
+
+ /* Prepare an image for each target and save the name of the resultant object
+ file to the OFFLOAD_NAMES array. It is terminated by a NULL entry. */
+ offload_names = XCNEWVEC (char *, num_targets + 1);
+ for (unsigned i = 0; i < num_targets; i++)
+ {
+ offload_names[i]
+ = compile_offload_image (names[i], compiler_path, in_argc, in_argv,
+ compiler_opts, compiler_opt_count,
+ linker_opts, linker_opt_count);
+ if (!offload_names[i])
+ fatal_error (input_location,
+ "problem with building target image for %s\n", names[i]);
+ }
+
+ out:
+ free_array_of_ptrs ((void **) names, num_targets);
+}
+
+/* Copy a file from SRC to DEST. */
+
+static void
+copy_file (const char *dest, const char *src)
+{
+ FILE *d = fopen (dest, "wb");
+ FILE *s = fopen (src, "rb");
+ char buffer[512];
+ while (!feof (s))
+ {
+ size_t len = fread (buffer, 1, 512, s);
+ if (ferror (s) != 0)
+ fatal_error (input_location, "reading input file");
+ if (len > 0)
+ {
+ fwrite (buffer, 1, len, d);
+ if (ferror (d) != 0)
+ fatal_error (input_location, "writing output file");
+ }
+ }
+}
+
+/* Find the crtoffloadbegin.o and crtoffloadend.o files in LIBRARY_PATH, make
+ copies and store the names of the copies in offloadbegin and offloadend. */
+
+static void
+find_offloadbeginend (void)
+{
+ char **paths = NULL;
+ const char *library_path = getenv ("LIBRARY_PATH");
+ if (!library_path)
+ return;
+ unsigned n_paths = parse_env_var (library_path, &paths, "/crtoffloadbegin.o");
+
+ unsigned i;
+ for (i = 0; i < n_paths; i++)
+ if (access_check (paths[i], R_OK) == 0)
+ {
+ size_t len = strlen (paths[i]);
+ char *tmp = xstrdup (paths[i]);
+ strcpy (paths[i] + len - strlen ("begin.o"), "end.o");
+ if (access_check (paths[i], R_OK) != 0)
+ fatal_error (input_location,
+ "installation error, can't find crtoffloadend.o");
+ /* The linker will delete the filenames we give it, so make
+ copies. */
+ offloadbegin = make_temp_file (".o");
+ offloadend = make_temp_file (".o");
+ copy_file (offloadbegin, tmp);
+ copy_file (offloadend, paths[i]);
+ free (tmp);
+ break;
+ }
+ if (i == n_paths)
+ fatal_error (input_location,
+ "installation error, can't find crtoffloadbegin.o");
+
+ free_array_of_ptrs ((void **) paths, n_paths);
+}
+
+/* A subroutine of run_gcc. Examine the open file FD for lto sections with
+ name prefix PREFIX, at FILE_OFFSET, and store any options we find in OPTS
+ and OPT_COUNT. Return true if we found a matchingn section, false
+ otherwise. COLLECT_GCC holds the value of the environment variable with
+ the same name. */
+
+static bool
+find_and_merge_options (int fd, off_t file_offset, const char *prefix,
+ struct cl_decoded_option **opts,
+ unsigned int *opt_count, const char *collect_gcc)
+{
+ off_t offset, length;
+ char *data;
+ char *fopts;
+ const char *errmsg;
+ int err;
+ struct cl_decoded_option *fdecoded_options = *opts;
+ unsigned int fdecoded_options_count = *opt_count;
+
+ simple_object_read *sobj;
+ sobj = simple_object_start_read (fd, file_offset, "__GNU_LTO",
+ &errmsg, &err);
+ if (!sobj)
+ return false;
+
+ char *secname = XALLOCAVEC (char, strlen (prefix) + sizeof (".opts"));
+ strcpy (secname, prefix);
+ strcat (secname, ".opts");
+ if (!simple_object_find_section (sobj, secname, &offset, &length,
+ &errmsg, &err))
+ {
+ simple_object_release_read (sobj);
+ return false;
+ }
+
+ lseek (fd, file_offset + offset, SEEK_SET);
+ data = (char *)xmalloc (length);
+ read (fd, data, length);
+ fopts = data;
+ do
+ {
+ struct cl_decoded_option *f2decoded_options;
+ unsigned int f2decoded_options_count;
+ get_options_from_collect_gcc_options (collect_gcc,
+ fopts, CL_LANG_ALL,
+ &f2decoded_options,
+ &f2decoded_options_count);
+ if (!fdecoded_options)
+ {
+ fdecoded_options = f2decoded_options;
+ fdecoded_options_count = f2decoded_options_count;
+ }
+ else
+ merge_and_complain (&fdecoded_options,
+ &fdecoded_options_count,
+ f2decoded_options, f2decoded_options_count);
+
+ fopts += strlen (fopts) + 1;
+ }
+ while (fopts - data < length);
+
+ free (data);
+ simple_object_release_read (sobj);
+ *opts = fdecoded_options;
+ *opt_count = fdecoded_options_count;
+ return true;
+}
+
/* Execute gcc. ARGC is the number of arguments. ARGV contains the arguments. */
static void
int jobserver = 0;
bool no_partition = false;
struct cl_decoded_option *fdecoded_options = NULL;
+ struct cl_decoded_option *offload_fdecoded_options = NULL;
unsigned int fdecoded_options_count = 0;
+ unsigned int offload_fdecoded_options_count = 0;
struct cl_decoded_option *decoded_options;
unsigned int decoded_options_count;
struct obstack argv_obstack;
int new_head_argc;
+ bool have_lto = false;
+ bool have_offload = false;
+ unsigned lto_argc = 0, offload_argc = 0;
+ char **lto_argv, **offload_argv;
/* Get the driver and options. */
collect_gcc = getenv ("COLLECT_GCC");
if (!collect_gcc)
- fatal ("environment variable COLLECT_GCC must be set");
+ fatal_error (input_location,
+ "environment variable COLLECT_GCC must be set");
collect_gcc_options = getenv ("COLLECT_GCC_OPTIONS");
if (!collect_gcc_options)
- fatal ("environment variable COLLECT_GCC_OPTIONS must be set");
+ fatal_error (input_location,
+ "environment variable COLLECT_GCC_OPTIONS must be set");
get_options_from_collect_gcc_options (collect_gcc, collect_gcc_options,
CL_LANG_ALL,
&decoded_options,
&decoded_options_count);
+ /* Allocate arrays for input object files with LTO or offload IL,
+ and for possible preceding arguments. */
+ lto_argv = XNEWVEC (char *, argc);
+ offload_argv = XNEWVEC (char *, argc);
+
/* Look at saved options in the IL files. */
for (i = 1; i < argc; ++i)
{
- char *data, *p;
- char *fopts;
+ char *p;
int fd;
- const char *errmsg;
- int err;
- off_t file_offset = 0, offset, length;
+ off_t file_offset = 0;
long loffset;
- simple_object_read *sobj;
int consumed;
- struct cl_decoded_option *f2decoded_options;
- unsigned int f2decoded_options_count;
char *filename = argv[i];
+
if ((p = strrchr (argv[i], '@'))
&& p != argv[i]
&& sscanf (p, "@%li%n", &loffset, &consumed) >= 1
filename[p - argv[i]] = '\0';
file_offset = (off_t) loffset;
}
- fd = open (argv[i], O_RDONLY);
+ fd = open (filename, O_RDONLY | O_BINARY);
if (fd == -1)
- continue;
- sobj = simple_object_start_read (fd, file_offset, "__GNU_LTO",
- &errmsg, &err);
- if (!sobj)
{
- close (fd);
+ lto_argv[lto_argc++] = argv[i];
continue;
}
- if (!simple_object_find_section (sobj, LTO_SECTION_NAME_PREFIX "." "opts",
- &offset, &length, &errmsg, &err))
+
+ if (find_and_merge_options (fd, file_offset, LTO_SECTION_NAME_PREFIX,
+ &fdecoded_options, &fdecoded_options_count,
+ collect_gcc))
{
- simple_object_release_read (sobj);
- close (fd);
- continue;
+ have_lto = true;
+ lto_argv[lto_argc++] = argv[i];
}
- lseek (fd, file_offset + offset, SEEK_SET);
- data = (char *)xmalloc (length);
- read (fd, data, length);
- fopts = data;
- do
- {
- get_options_from_collect_gcc_options (collect_gcc,
- fopts, CL_LANG_ALL,
- &f2decoded_options,
- &f2decoded_options_count);
- if (!fdecoded_options)
- {
- fdecoded_options = f2decoded_options;
- fdecoded_options_count = f2decoded_options_count;
- }
- else
- merge_and_complain (&fdecoded_options,
- &fdecoded_options_count,
- f2decoded_options, f2decoded_options_count);
- fopts += strlen (fopts) + 1;
+ if (find_and_merge_options (fd, file_offset, OFFLOAD_SECTION_NAME_PREFIX,
+ &offload_fdecoded_options,
+ &offload_fdecoded_options_count, collect_gcc))
+ {
+ have_offload = true;
+ offload_argv[offload_argc++] = argv[i];
}
- while (fopts - data < length);
- free (data);
- simple_object_release_read (sobj);
close (fd);
}
obstack_ptr_grow (&argv_obstack, "-xlto");
obstack_ptr_grow (&argv_obstack, "-c");
- /* Append compiler driver arguments as far as they were merged. */
- for (j = 1; j < fdecoded_options_count; ++j)
- {
- struct cl_decoded_option *option = &fdecoded_options[j];
-
- /* File options have been properly filtered by lto-opts.c. */
- switch (option->opt_index)
- {
- /* Drop arguments that we want to take from the link line. */
- case OPT_flto_:
- case OPT_flto:
- case OPT_flto_partition_none:
- case OPT_flto_partition_1to1:
- case OPT_flto_partition_balanced:
- continue;
-
- default:
- break;
- }
+ append_compiler_options (&argv_obstack, fdecoded_options,
+ fdecoded_options_count);
+ append_linker_options (&argv_obstack, decoded_options, decoded_options_count);
- /* For now do what the original LTO option code was doing - pass
- on any CL_TARGET flag and a few selected others. */
- switch (option->opt_index)
- {
- case OPT_fPIC:
- case OPT_fpic:
- case OPT_fpie:
- case OPT_fcommon:
- case OPT_fexceptions:
- case OPT_fnon_call_exceptions:
- case OPT_fgnu_tm:
- case OPT_freg_struct_return:
- case OPT_fpcc_struct_return:
- case OPT_fshort_double:
- case OPT_ffp_contract_:
- case OPT_fwrapv:
- case OPT_ftrapv:
- case OPT_fstrict_overflow:
- case OPT_O:
- case OPT_Ofast:
- case OPT_Og:
- case OPT_Os:
- break;
-
- default:
- if (!(cl_options[option->opt_index].flags & CL_TARGET))
- continue;
- }
-
- /* Pass the option on. */
- for (i = 0; i < option->canonical_option_num_elements; ++i)
- obstack_ptr_grow (&argv_obstack, option->canonical_option[i]);
- }
-
- /* Append linker driver arguments. Compiler options from the linker
- driver arguments will override / merge with those from the compiler. */
+ /* Scan linker driver arguments for things that are of relevance to us. */
for (j = 1; j < decoded_options_count; ++j)
{
struct cl_decoded_option *option = &decoded_options[j];
-
- /* Do not pass on frontend specific flags not suitable for lto. */
- if (!(cl_options[option->opt_index].flags
- & (CL_COMMON|CL_TARGET|CL_DRIVER|CL_LTO)))
- continue;
-
switch (option->opt_index)
{
case OPT_o:
linker_output = option->arg;
- /* We generate new intermediate output, drop this arg. */
- continue;
+ break;
case OPT_save_temps:
- debug = 1;
+ save_temps = 1;
break;
case OPT_v:
verbose = 1;
break;
- case OPT_flto_partition_none:
- no_partition = true;
+ case OPT_flto_partition_:
+ if (strcmp (option->arg, "none") == 0)
+ no_partition = true;
break;
case OPT_flto_:
case OPT_flto:
lto_mode = LTO_MODE_WHOPR;
- /* We've handled these LTO options, do not pass them on. */
- continue;
-
- case OPT_freg_struct_return:
- case OPT_fpcc_struct_return:
- case OPT_fshort_double:
- /* Ignore these, they are determined by the input files.
- ??? We fail to diagnose a possible mismatch here. */
- continue;
+ break;
default:
break;
}
-
- /* Pass the option on. */
- for (i = 0; i < option->canonical_option_num_elements; ++i)
- obstack_ptr_grow (&argv_obstack, option->canonical_option[i]);
}
if (no_partition)
/* Remember at which point we can scrub args to re-use the commons. */
new_head_argc = obstack_object_size (&argv_obstack) / sizeof (void *);
+ if (have_offload)
+ {
+ compile_images_for_offload_targets (offload_argc, offload_argv,
+ offload_fdecoded_options,
+ offload_fdecoded_options_count,
+ decoded_options,
+ decoded_options_count);
+ if (offload_names)
+ {
+ find_offloadbeginend ();
+ for (i = 0; offload_names[i]; i++)
+ printf ("%s\n", offload_names[i]);
+ free_array_of_ptrs ((void **) offload_names, i);
+ }
+ }
+
+ if (offloadbegin)
+ printf ("%s\n", offloadbegin);
+
+ /* If object files contain offload sections, but do not contain LTO sections,
+ then there is no need to perform a link-time recompilation, i.e.
+ lto-wrapper is used only for a compilation of offload images. */
+ if (have_offload && !have_lto)
+ {
+ for (i = 1; i < argc; ++i)
+ if (strncmp (argv[i], "-fresolution=", sizeof ("-fresolution=") - 1))
+ {
+ char *out_file;
+ /* Can be ".o" or ".so". */
+ char *ext = strrchr (argv[i], '.');
+ if (ext == NULL)
+ out_file = make_temp_file ("");
+ else
+ out_file = make_temp_file (ext);
+ /* The linker will delete the files we give it, so make copies. */
+ copy_file (out_file, argv[i]);
+ printf ("%s\n", out_file);
+ }
+ goto finish;
+ }
+
if (lto_mode == LTO_MODE_LTO)
{
flto_out = make_temp_file (".lto.o");
obstack_ptr_grow (&argv_obstack, dumpbase);
}
- if (linker_output && debug)
+ if (linker_output && save_temps)
{
ltrans_output_file = (char *) xmalloc (strlen (linker_output)
+ sizeof (".ltrans.out") + 1);
}
/* Append the input objects and possible preceding arguments. */
- for (i = 1; i < argc; ++i)
- obstack_ptr_grow (&argv_obstack, argv[i]);
+ for (i = 0; i < lto_argc; ++i)
+ obstack_ptr_grow (&argv_obstack, lto_argv[i]);
obstack_ptr_grow (&argv_obstack, NULL);
new_argv = XOBFINISH (&argv_obstack, const char **);
argv_ptr = &new_argv[new_head_argc];
- fork_execute (CONST_CAST (char **, new_argv));
+ fork_execute (new_argv[0], CONST_CAST (char **, new_argv), true);
if (lto_mode == LTO_MODE_LTO)
{
struct obstack env_obstack;
if (!stream)
- fatal_perror ("fopen: %s", ltrans_output_file);
+ fatal_error (input_location, "fopen: %s: %m", ltrans_output_file);
/* Parse the list of LTRANS inputs from the WPA stage. */
obstack_init (&env_obstack);
output_names[nr-1] = output_name;
}
fclose (stream);
- maybe_unlink_file (ltrans_output_file);
+ maybe_unlink (ltrans_output_file);
ltrans_output_file = NULL;
if (parallel)
/* If we are not preserving the ltrans input files then
truncate them as soon as we have processed it. This
reduces temporary disk-space usage. */
- if (! debug)
+ if (! save_temps)
fprintf (mstream, "\t@-touch -r %s %s.tem > /dev/null 2>&1 "
"&& mv %s.tem %s\n",
input_name, input_name, input_name, input_name);
}
else
{
- fork_execute (CONST_CAST (char **, new_argv));
- maybe_unlink_file (input_name);
+ fork_execute (new_argv[0], CONST_CAST (char **, new_argv),
+ true);
+ maybe_unlink (input_name);
}
output_names[i] = output_name;
}
new_argv[i++] = "all";
new_argv[i++] = NULL;
- pex = collect_execute (CONST_CAST (char **, new_argv));
- collect_wait (new_argv[0], pex);
- maybe_unlink_file (makefile);
+ pex = collect_execute (new_argv[0], CONST_CAST (char **, new_argv),
+ NULL, NULL, PEX_SEARCH, false);
+ do_wait (new_argv[0], pex);
+ maybe_unlink (makefile);
makefile = NULL;
for (i = 0; i < nr; ++i)
- maybe_unlink_file (input_names[i]);
+ maybe_unlink (input_names[i]);
}
for (i = 0; i < nr; ++i)
{
obstack_free (&env_obstack, NULL);
}
+ finish:
+ if (offloadend)
+ printf ("%s\n", offloadend);
+
+ XDELETE (lto_argv);
+ XDELETE (offload_argv);
obstack_free (&argv_obstack, NULL);
}
diagnostic_initialize (global_dc, 0);
+ if (atexit (lto_wrapper_cleanup) != 0)
+ fatal_error (input_location, "atexit failed");
+
if (signal (SIGINT, SIG_IGN) != SIG_IGN)
signal (SIGINT, fatal_signal);
#ifdef SIGHUP
projects / gcc.git / blobdiff