diff options
Diffstat (limited to 'debian/patches/gcc-foffload-default.diff')
| -rw-r--r-- | debian/patches/gcc-foffload-default.diff | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/debian/patches/gcc-foffload-default.diff b/debian/patches/gcc-foffload-default.diff new file mode 100644 index 0000000..1ad0556 --- /dev/null +++ b/debian/patches/gcc-foffload-default.diff @@ -0,0 +1,121 @@ +# DP: Allow setting offload targets by OFFLOAD_TARGET_DEFAULT + +http://pkgs.fedoraproject.org/cgit/rpms/gcc.git/tree/gcc7-foffload-default.patch + +2017-01-20 Jakub Jelinek <jakub@redhat.com> + + * gcc.c (offload_targets_default): New variable. + (process_command): Set it if -foffload is defaulted. + (driver::maybe_putenv_OFFLOAD_TARGETS): Add OFFLOAD_TARGET_DEFAULT=1 + into environment if -foffload has been defaulted. + * lto-wrapper.c (OFFLOAD_TARGET_DEFAULT_ENV): Define. + (compile_images_for_offload_targets): If OFFLOAD_TARGET_DEFAULT + is in the environment, don't fail if corresponding mkoffload + can't be found. Free and clear offload_names if no valid offload + is found. +libgomp/ + * target.c (gomp_load_plugin_for_device): If a plugin can't be + dlopened, assume it has no devices silently. + +--- a/src/gcc/gcc.c ++++ b/src/gcc/gcc.c +@@ -301,6 +301,10 @@ static const char *spec_host_machine = D + + static char *offload_targets = NULL; + ++/* Set to true if -foffload has not been used and offload_targets ++ is set to the configured in default. */ ++static bool offload_targets_default; ++ + /* Nonzero if cross-compiling. + When -b is used, the value comes from the `specs' file. */ + +@@ -4680,7 +4684,10 @@ process_command (unsigned int decoded_op + /* If the user didn't specify any, default to all configured offload + targets. */ + if (ENABLE_OFFLOADING && offload_targets == NULL) +- handle_foffload_option (OFFLOAD_TARGETS); ++ { ++ handle_foffload_option (OFFLOAD_TARGETS); ++ offload_targets_default = true; ++ } + + if (output_file + && strcmp (output_file, "-") != 0 +@@ -7898,6 +7905,8 @@ driver::maybe_putenv_OFFLOAD_TARGETS () + obstack_grow (&collect_obstack, offload_targets, + strlen (offload_targets) + 1); + xputenv (XOBFINISH (&collect_obstack, char *)); ++ if (offload_targets_default) ++ xputenv ("OFFLOAD_TARGET_DEFAULT=1"); + } + + free (offload_targets); +--- a/src/gcc/lto-wrapper.c ++++ b/src/gcc/lto-wrapper.c +@@ -52,6 +52,7 @@ along with GCC; see the file COPYING3. + /* Environment variable, used for passing the names of offload targets from GCC + driver to lto-wrapper. */ + #define OFFLOAD_TARGET_NAMES_ENV "OFFLOAD_TARGET_NAMES" ++#define OFFLOAD_TARGET_DEFAULT_ENV "OFFLOAD_TARGET_DEFAULT" + + enum lto_mode_d { + LTO_MODE_NONE, /* Not doing LTO. */ +@@ -881,8 +882,10 @@ compile_images_for_offload_targets (unsi + if (!target_names) + return; + unsigned num_targets = parse_env_var (target_names, &names, NULL); ++ const char *target_names_default = getenv (OFFLOAD_TARGET_DEFAULT_ENV); + + int next_name_entry = 0; ++ bool hsa_seen = false; + const char *compiler_path = getenv ("COMPILER_PATH"); + if (!compiler_path) + goto out; +@@ -895,18 +898,32 @@ compile_images_for_offload_targets (unsi + /* HSA does not use LTO-like streaming and a different compiler, skip + it. */ + if (strcmp (names[i], "hsa") == 0) +- continue; ++ { ++ hsa_seen = true; ++ continue; ++ } + + offload_names[next_name_entry] + = compile_offload_image (names[i], compiler_path, in_argc, in_argv, + compiler_opts, compiler_opt_count, + linker_opts, linker_opt_count); + if (!offload_names[next_name_entry]) +- fatal_error (input_location, +- "problem with building target image for %s\n", names[i]); ++ { ++ if (target_names_default != NULL) ++ continue; ++ fatal_error (input_location, ++ "problem with building target image for %s\n", ++ names[i]); ++ } + next_name_entry++; + } + ++ if (next_name_entry == 0 && !hsa_seen) ++ { ++ free (offload_names); ++ offload_names = NULL; ++ } ++ + out: + free_array_of_ptrs ((void **) names, num_targets); + } +--- a/src/libgomp/target.c ++++ b/src/libgomp/target.c +@@ -2592,7 +2592,7 @@ gomp_load_plugin_for_device (struct gomp + + void *plugin_handle = dlopen (plugin_name, RTLD_LAZY); + if (!plugin_handle) +- goto dl_fail; ++ return 0; + + /* Check if all required functions are available in the plugin and store + their handlers. None of the symbols can legitimately be NULL, |