123 lines
4.1 KiB
Diff
123 lines
4.1 KiB
Diff
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2019-01-17 Jakub Jelinek <jakub@redhat.com>
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* gcc.c (offload_targets_default): New variable.
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(process_command): Set it if -foffload is defaulted.
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(driver::maybe_putenv_OFFLOAD_TARGETS): Add OFFLOAD_TARGET_DEFAULT=1
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into environment if -foffload has been defaulted.
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* lto-wrapper.c (OFFLOAD_TARGET_DEFAULT_ENV): Define.
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(compile_offload_image): If OFFLOAD_TARGET_DEFAULT
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is in the environment, don't fail if corresponding mkoffload
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can't be found.
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(compile_images_for_offload_targets): Likewise. Free and clear
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offload_names if no valid offload is found.
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libgomp/
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* target.c (gomp_load_plugin_for_device): If a plugin can't be
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dlopened, assume it has no devices silently.
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--- gcc/gcc.c.jj 2017-01-17 10:28:40.000000000 +0100
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+++ gcc/gcc.c 2017-01-20 16:26:29.649962902 +0100
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@@ -290,6 +290,10 @@ static const char *spec_host_machine = D
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static char *offload_targets = NULL;
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+/* Set to true if -foffload has not been used and offload_targets
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+ is set to the configured in default. */
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+static bool offload_targets_default;
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+
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/* Nonzero if cross-compiling.
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When -b is used, the value comes from the `specs' file. */
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@@ -4457,7 +4461,10 @@ process_command (unsigned int decoded_op
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/* If the user didn't specify any, default to all configured offload
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targets. */
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if (ENABLE_OFFLOADING && offload_targets == NULL)
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- handle_foffload_option (OFFLOAD_TARGETS);
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+ {
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+ handle_foffload_option (OFFLOAD_TARGETS);
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+ offload_targets_default = true;
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+ }
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if (output_file
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&& strcmp (output_file, "-") != 0
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@@ -7693,6 +7700,8 @@ driver::maybe_putenv_OFFLOAD_TARGETS ()
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obstack_grow (&collect_obstack, offload_targets,
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strlen (offload_targets) + 1);
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xputenv (XOBFINISH (&collect_obstack, char *));
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+ if (offload_targets_default)
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+ xputenv ("OFFLOAD_TARGET_DEFAULT=1");
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}
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free (offload_targets);
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--- gcc/lto-wrapper.c.jj 2017-01-01 12:45:34.000000000 +0100
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+++ gcc/lto-wrapper.c 2017-01-20 16:34:18.294016997 +0100
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@@ -52,6 +52,7 @@ along with GCC; see the file COPYING3.
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/* Environment variable, used for passing the names of offload targets from GCC
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driver to lto-wrapper. */
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#define OFFLOAD_TARGET_NAMES_ENV "OFFLOAD_TARGET_NAMES"
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+#define OFFLOAD_TARGET_DEFAULT_ENV "OFFLOAD_TARGET_DEFAULT"
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enum lto_mode_d {
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LTO_MODE_NONE, /* Not doing LTO. */
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@@ -822,6 +823,12 @@ compile_offload_image (const char *targe
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break;
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}
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+ if (!compiler && getenv (OFFLOAD_TARGET_DEFAULT_ENV))
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+ {
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+ free_array_of_ptrs ((void **) paths, n_paths);
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+ return NULL;
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+ }
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+
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if (!compiler)
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fatal_error (input_location,
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"could not find %s in %s (consider using %<-B%>)",
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@@ -885,6 +892,7 @@ compile_images_for_offload_targets (unsi
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unsigned num_targets = parse_env_var (target_names, &names, NULL);
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int next_name_entry = 0;
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+ bool hsa_seen = false;
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const char *compiler_path = getenv ("COMPILER_PATH");
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if (!compiler_path)
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goto out;
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@@ -897,18 +905,26 @@ compile_images_for_offload_targets (unsi
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/* HSA does not use LTO-like streaming and a different compiler, skip
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it. */
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if (strcmp (names[i], "hsa") == 0)
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- continue;
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+ {
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+ hsa_seen = true;
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+ continue;
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+ }
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offload_names[next_name_entry]
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= compile_offload_image (names[i], compiler_path, in_argc, in_argv,
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compiler_opts, compiler_opt_count,
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linker_opts, linker_opt_count);
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if (!offload_names[next_name_entry])
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- fatal_error (input_location,
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- "problem with building target image for %s", names[i]);
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+ continue;
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next_name_entry++;
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}
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+ if (next_name_entry == 0 && !hsa_seen)
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+ {
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+ free (offload_names);
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+ offload_names = NULL;
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+ }
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+
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out:
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free_array_of_ptrs ((void **) names, num_targets);
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}
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--- libgomp/target.c.jj 2017-01-01 12:45:52.000000000 +0100
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+++ libgomp/target.c 2017-01-20 20:12:13.756710875 +0100
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@@ -2356,7 +2356,7 @@ gomp_load_plugin_for_device (struct gomp
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void *plugin_handle = dlopen (plugin_name, RTLD_LAZY);
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if (!plugin_handle)
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- goto dl_fail;
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+ return 0;
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/* Check if all required functions are available in the plugin and store
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their handlers. None of the symbols can legitimately be NULL,
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