It's functionality that is analogous to -ffile-prefix-map, this time
for gcov purpose.
Patch can bootstrap on x86_64-linux-gnu and survives regression tests.
Ready to be installed?
Thanks,
Martin
PR gcov-profile/96092
gcc/ChangeLog:
* common.opt: New option.
* coverage.c (coverage_begin_function): Emit filename with
remap_profile_filename.
* doc/invoke.texi: Document the new option.
* file-prefix-map.c (add_profile_prefix_map): New.
(remap_profile_filename): Likewise.
* file-prefix-map.h (add_profile_prefix_map): Likewise.
(remap_profile_filename): Likewise.
* lto-opts.c (lto_write_options): Handle
OPT_fprofile_prefix_map_.
* opts-global.c (handle_common_deferred_options): Likewise.
* opts.c (common_handle_option): Likewise.
(gen_command_line_string): Likewise.
* profile.c (output_location): Emit filename with
remap_profile_filename.
---
gcc/common.opt | 4 ++++
gcc/coverage.c | 3 ++-
gcc/doc/invoke.texi | 14 ++++++++++++--
gcc/file-prefix-map.c | 17 +++++++++++++++++
gcc/file-prefix-map.h | 2 ++
gcc/lto-opts.c | 1 +
gcc/opts-global.c | 4 ++++
gcc/opts.c | 2 ++
gcc/profile.c | 4 ++++
9 files changed, 48 insertions(+), 3 deletions(-)
diff --git a/gcc/common.opt b/gcc/common.opt
index de9b848eda5..0b59b46b875 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -2323,6 +2323,10 @@ fprofile-prefix-path=
Common Joined RejectNegative Var(profile_prefix_path)
Remove prefix from absolute path before mangling name for -fprofile-generate=
and -fprofile-use=.
+fprofile-prefix-map=
+Common Joined RejectNegative Var(common_deferred_options) Defer
+-fprofile-prefix-map=<old>=<new> Map one directory name to another in GCOV
coverage result.
+
fprofile-generate
Common
Enable common options for generating profile info for profile feedback
directed optimizations.
diff --git a/gcc/coverage.c b/gcc/coverage.c
index 4daa3f9fc30..7f8b532cb52 100644
--- a/gcc/coverage.c
+++ b/gcc/coverage.c
@@ -51,6 +51,7 @@ along with GCC; see the file COPYING3. If not see
#include "profile.h"
#include "diagnostic.h"
#include "varasm.h"
+#include "file-prefix-map.h"
#include "gcov-io.c"
@@ -646,7 +647,7 @@ coverage_begin_function (unsigned lineno_checksum, unsigned cfg_checksum)
gcov_write_unsigned (DECL_ARTIFICIAL (current_function_decl)
&& !DECL_FUNCTION_VERSIONED (current_function_decl)
&& !DECL_LAMBDA_FUNCTION_P (current_function_decl));
- gcov_write_filename (startloc.file);
+ gcov_write_filename (remap_profile_filename (startloc.file));
gcov_write_unsigned (startloc.line);
gcov_write_unsigned (startloc.column);
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 2aba4c70b44..5fb6a8bfffe 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -606,7 +606,8 @@ Objective-C and Objective-C++ Dialects}.
-fvtv-counts -fvtv-debug @gol
-finstrument-functions @gol
-finstrument-functions-exclude-function-list=@var{sym},@var{sym},@dots{} @gol
--finstrument-functions-exclude-file-list=@var{file},@var{file},@dots{}}
+-finstrument-functions-exclude-file-list=@var{file},@var{file},@dots{}} @gol
+-fprofile-prefix-map=@var{old}=@var{new}
@item Preprocessor Options
@xref{Preprocessor Options,,Options Controlling the Preprocessor}.
@@ -2173,7 +2174,8 @@ files resided in directory @file{@var{new}} instead.
Specifying this
option is equivalent to specifying all the individual
@option{-f*-prefix-map} options. This can be used to make reproducible
builds that are location independent. See also
-@option{-fmacro-prefix-map} and @option{-fdebug-prefix-map}.
+@option{-fmacro-prefix-map}, @option{-fdebug-prefix-map} and
+@option{-fprofile-prefix-map}.
@item -fplugin=@var{name}.so
@opindex fplugin
@@ -15155,6 +15157,14 @@ In such setups
@option{-fprofile-prefix-path=}@var{path} with @var{path}
pointing to the base directory of the build can be used to strip the irrelevant
part of the path and keep all file names relative to the main build directory.
+@item -fprofile-prefix-map=@var{old}=@var{new}
+@opindex fprofile-prefix-map
+When compiling files residing in directory @file{@var{old}}, record
+profiling information (with @option{--coverage})
+describing them as if the files resided in
+directory @file{@var{new}} instead.
+See also @option{-ffile-prefix-map}.
+
@item -fprofile-update=@var{method}
@opindex fprofile-update
diff --git a/gcc/file-prefix-map.c b/gcc/file-prefix-map.c
index ad242e5b9c5..290b4b2da33 100644
--- a/gcc/file-prefix-map.c
+++ b/gcc/file-prefix-map.c
@@ -92,6 +92,7 @@ remap_filename (file_prefix_map *maps, const char *filename)
/* Linked lists of file_prefix_map structures. */
static file_prefix_map *macro_prefix_maps; /* -fmacro-prefix-map */
static file_prefix_map *debug_prefix_maps; /* -fdebug-prefix-map */
+static file_prefix_map *profile_prefix_maps; /* -fprofile-prefix-map */
/* Record a file prefix mapping for -fmacro-prefix-map. */
void
@@ -113,6 +114,14 @@ add_file_prefix_map (const char *arg)
{
add_prefix_map (macro_prefix_maps, arg, "-ffile-prefix-map");
add_prefix_map (debug_prefix_maps, arg, "-ffile-prefix-map");
+ add_prefix_map (profile_prefix_maps, arg, "-ffile-prefix-map");
+}
+
+/* Record a file prefix mapping for -fprofile-prefix-map. */
+void
+add_profile_prefix_map (const char *arg)
+{
+ add_prefix_map (profile_prefix_maps, arg, "-fprofile-prefix-map");
}
/* Remap using -fmacro-prefix-map. Return the GC-allocated new name
@@ -130,3 +139,11 @@ remap_debug_filename (const char *filename)
{
return remap_filename (debug_prefix_maps, filename);
}
+
+/* Remap using -fprofile-prefix-map. Return the GC-allocated new name
+ corresponding to FILENAME or FILENAME if no remapping was performed. */
+const char *
+remap_profile_filename (const char *filename)
+{
+ return remap_filename (profile_prefix_maps, filename);
+}
diff --git a/gcc/file-prefix-map.h b/gcc/file-prefix-map.h
index 5aecd5f7e19..3a2b0605ae0 100644
--- a/gcc/file-prefix-map.h
+++ b/gcc/file-prefix-map.h
@@ -21,8 +21,10 @@
void add_macro_prefix_map (const char *);
void add_debug_prefix_map (const char *);
void add_file_prefix_map (const char *);
+void add_profile_prefix_map (const char *);
const char *remap_macro_filename (const char *);
const char *remap_debug_filename (const char *);
+const char *remap_profile_filename (const char *);
#endif /* !GCC_FILE_PREFIX_MAP_H */
diff --git a/gcc/lto-opts.c b/gcc/lto-opts.c
index 7b2ad74e69a..30c10136f31 100644
--- a/gcc/lto-opts.c
+++ b/gcc/lto-opts.c
@@ -149,6 +149,7 @@ lto_write_options (void)
case OPT_fdebug_prefix_map_:
case OPT_ffile_prefix_map_:
case OPT_fmacro_prefix_map_:
+ case OPT_fprofile_prefix_map_:
continue;
default:
diff --git a/gcc/opts-global.c b/gcc/opts-global.c
index 55273822ec5..d4fde39b9bd 100644
--- a/gcc/opts-global.c
+++ b/gcc/opts-global.c
@@ -386,6 +386,10 @@ handle_common_deferred_options (void)
add_file_prefix_map (opt->arg);
break;
+ case OPT_fprofile_prefix_map_:
+ add_profile_prefix_map (opt->arg);
+ break;
+
case OPT_fdump_:
g->get_dumps ()->dump_switch_p (opt->arg);
break;
diff --git a/gcc/opts.c b/gcc/opts.c
index 175b4635bb4..255f4ac0def 100644
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -2684,6 +2684,7 @@ common_handle_option (struct gcc_options *opts,
case OPT_fdebug_prefix_map_:
case OPT_ffile_prefix_map_:
+ case OPT_fprofile_prefix_map_:
/* Deferred. */
break;
@@ -3597,6 +3598,7 @@ gen_command_line_string (cl_decoded_option *options,
case OPT_fdebug_prefix_map_:
case OPT_fmacro_prefix_map_:
case OPT_ffile_prefix_map_:
+ case OPT_fprofile_prefix_map_:
case OPT_fcompare_debug:
case OPT_fchecking:
case OPT_fchecking_:
diff --git a/gcc/profile.c b/gcc/profile.c
index c33c833167f..ed7398fe7df 100644
--- a/gcc/profile.c
+++ b/gcc/profile.c
@@ -64,6 +64,7 @@ along with GCC; see the file COPYING3. If not see
#include "tree-cfg.h"
#include "dumpfile.h"
#include "cfgloop.h"
+#include "file-prefix-map.h"
#include "profile.h"
@@ -992,6 +993,9 @@ output_location (hash_set<location_triplet_hash> *streamed_locations,
static int prev_line;
bool name_differs, line_differs;
+ if (file_name != NULL)
+ file_name = remap_profile_filename (file_name);
+
location_triplet triplet;
triplet.filename = file_name;
triplet.lineno = line;
--
2.33.1
