diff options
Diffstat (limited to 'gcc/gcc.c')
| -rw-r--r-- | gcc/gcc.c | 121 |
1 files changed, 99 insertions, 22 deletions
@@ -3977,6 +3977,84 @@ driver_wrong_lang_callback (const struct cl_decoded_option *decoded, static const char *spec_lang = 0; static int last_language_n_infiles; + +/* Check that GCC is configured to support the offload target. */ + +static bool +check_offload_target_name (const char *target, ptrdiff_t len) +{ + const char *n, *c = OFFLOAD_TARGETS; + while (c) + { + n = strchr (c, ','); + if (n == NULL) + n = strchr (c, '\0'); + if (len == n - c && strncmp (target, c, n - c) == 0) + break; + c = *n ? n + 1 : NULL; + } + if (!c) + { + char *s; + auto_vec<const char*> candidates; + char *cand = (char *) alloca (strlen (OFFLOAD_TARGETS) + 1); + c = OFFLOAD_TARGETS; + while (c) + { + n = strchr (c, ','); + if (n == NULL) + n = strchr (c, '\0'); + strncpy (cand, c, n - c); + cand[n - c] = '\0'; + candidates.safe_push (cand); + c = *n ? n + 1 : NULL; + } + error ("GCC is not configured to support %q.*s as offload target", + len, target); + const char *hint = candidates_list_and_hint (target, s, candidates); + if (hint) + inform (UNKNOWN_LOCATION, + "valid offload targets are: %s; did you mean %qs?", s, hint); + else + inform (UNKNOWN_LOCATION, "valid offload targets are: %s", s); + XDELETEVEC (s); + return false; + } + return true; +} + +/* Sanity check for -foffload-options. */ + +static void +check_foffload_target_names (const char *arg) +{ + const char *cur, *next, *end; + /* If option argument starts with '-' then no target is specified and we + do not need to parse it. */ + if (arg[0] == '-') + return; + end = strchr (arg, '='); + if (end == NULL) + { + error ("%<=%>options missing after %<-foffload-options=%>target"); + return; + } + + cur = arg; + while (cur < end) + { + next = strchr (cur, ','); + if (next == NULL) + next = end; + next = (next > end) ? end : next; + + /* Retain non-supported targets after printing an error as those will not + be processed; each enabled target only processes its triplet. */ + check_offload_target_name (cur, next - cur); + cur = next + 1; + } +} + /* Parse -foffload option argument. */ static void @@ -4006,34 +4084,25 @@ handle_foffload_option (const char *arg) memcpy (target, cur, next - cur); target[next - cur] = '\0'; - /* If 'disable' is passed to the option, stop parsing the option and clean - the list of offload targets. */ - if (strcmp (target, "disable") == 0) + /* Reset offloading list and continue. */ + if (strcmp (target, "default") == 0) { free (offload_targets); - offload_targets = xstrdup (""); - break; + offload_targets = NULL; + goto next_item; } - /* Check that GCC is configured to support the offload target. */ - c = OFFLOAD_TARGETS; - while (c) + /* If 'disable' is passed to the option, clean the list of + offload targets and return, even if more targets follow. + Likewise if GCC is not configured to support that offload target. */ + if (strcmp (target, "disable") == 0 + || !check_offload_target_name (target, next - cur)) { - n = strchr (c, ','); - if (n == NULL) - n = strchr (c, '\0'); - - if (next - cur == n - c && strncmp (target, c, n - c) == 0) - break; - - c = *n ? n + 1 : NULL; + free (offload_targets); + offload_targets = xstrdup (""); + return; } - if (!c) - fatal_error (input_location, - "GCC is not configured to support %s as offload target", - target); - if (!offload_targets) { offload_targets = target; @@ -4067,7 +4136,7 @@ handle_foffload_option (const char *arg) memcpy (offload_targets + offload_targets_len, target, next - cur + 1); } } - +next_item: cur = next + 1; XDELETEVEC (target); } @@ -4499,8 +4568,16 @@ driver_handle_option (struct gcc_options *opts, flag_wpa = ""; break; + case OPT_foffload_options_: + check_foffload_target_names (arg); + break; + case OPT_foffload_: handle_foffload_option (arg); + if (arg[0] == '-' || NULL != strchr (arg, '=')) + save_switch (concat ("-foffload-options=", arg, NULL), + 0, NULL, validated, true); + do_save = false; break; default: |