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Re: [wwwdocs] changes.html - PGO and GCOV changes
- From: Martin Liška <mliska at suse dot cz>
- To: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Wed, 25 Jan 2017 16:43:02 +0100
- Subject: Re: [wwwdocs] changes.html - PGO and GCOV changes
- Authentication-results: sourceware.org; auth=none
- References: <15e4af06-6046-1a0f-7e72-c780193b0616@suse.cz>
Hello.
Following patch adds what was said in the changes file to our documentation.
Thanks,
Martin
>From 0da7f4d9a2a895e63271e9dc870814c6c7e3f419 Mon Sep 17 00:00:00 2001
From: marxin <mliska@suse.cz>
Date: Wed, 25 Jan 2017 16:41:23 +0100
Subject: [PATCH] Enhance doc for -fprofile-arcs
gcc/ChangeLog:
2017-01-25 Martin Liska <mliska@suse.cz>
* doc/invoke.texi (-fprofile-arcs): Document profiling support
for {cd}tors and C++ {cd}tors.
---
gcc/doc/invoke.texi | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 6a42193d106..223a0aed7af 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -10584,7 +10584,12 @@ linking.
@opindex fprofile-arcs
Add code so that program flow @dfn{arcs} are instrumented. During
execution the program records how many times each branch and call is
-executed and how many times it is taken or returns. When the compiled
+executed and how many times it is taken or returns. On targets that support
+constructors with priority support, the profiling properly handles constructors,
+destructors and C++ constructors (and destructors) of classes which are used
+as a type of a global variable.
+
+When the compiled
program exits it saves this data to a file called
@file{@var{auxname}.gcda} for each source file. The data may be used for
profile-directed optimizations (@option{-fbranch-probabilities}), or for
--
2.11.0