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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2020-11-13 17:47:40 +0100 |
|---|---|---|
| committer | Martin Liska <mliska@suse.cz> | 2020-11-16 12:52:14 +0100 |
| commit | 27f7fb79d27bd4a4a7f04d4970c06e9050a6564e (patch) | |
| tree | 4af8d2df27787d146b742cc8cde93ea3e668c084 /gcc/common.opt | |
| parent | d0a206abc6cbf0e992bf82bbb3584686eae05d34 (diff) | |
| download | gcc-27f7fb79d27bd4a4a7f04d4970c06e9050a6564e.zip gcc-27f7fb79d27bd4a4a7f04d4970c06e9050a6564e.tar.gz gcc-27f7fb79d27bd4a4a7f04d4970c06e9050a6564e.tar.bz2 | |
gcov: Add -fprofile-info-section support
Register the profile information in the specified section instead of using a
constructor/destructor. A pointer to the profile information generated by
-fprofile-arcs or -ftest-coverage is placed in the specified section for each
translation unit. This option disables the profile information registration
through a constructor and it disables the profile information processing
through a destructor.
I am not sure how I can test this option. One approach would be to assemble a
test file, then scan it and check that a .gcov_info section is present and no
__gcov_init() and __gcov_exit() calls are present. Is there an example for
this in the test suite?
gcc/
* common.opt (fprofile-info-section): New.
* coverage.c (build_gcov_info_var_registration): New.
(coverage_obj_init): Evaluate profile_info_section and use
build_gcov_info_var_registration().
* doc/invoke.texi (fprofile-info-section): Document.
* opts.c (common_handle_option): Process fprofile-info-section
option.
gcc/testsuite/ChangeLog:
* gcc.dg/profile-info-section.c: New test.
Diffstat (limited to 'gcc/common.opt')
| -rw-r--r-- | gcc/common.opt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/common.opt b/gcc/common.opt index 9552ceb..fe39b3d 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -2272,6 +2272,14 @@ fprofile-generate= Common Joined RejectNegative Enable common options for generating profile info for profile feedback directed optimizations, and set -fprofile-dir=. +fprofile-info-section +Common RejectNegative +Register the profile information in the .gcov_info section instead of using a constructor/destructor. + +fprofile-info-section= +Common Joined RejectNegative Var(profile_info_section) +Register the profile information in the specified section instead of using a constructor/destructor. + fprofile-partial-training Common Report Var(flag_profile_partial_training) Optimization Do not assume that functions never executed during the train run are cold. |