gcc/ChangeLog:
2017-10-23 Martin Liska <mli...@suse.cz>
PR gcov-profile/82633
* doc/gcov.texi: Document -fkeep-{static,inline}-functions and
their interaction with GCOV infrastructure.
* configure.ac: Add -fkeep-{inline,static}-functions to
coverage_flags.
* configure: Regenerate.
---
gcc/configure | 4 ++--
gcc/configure.ac | 4 ++--
gcc/doc/gcov.texi | 5 +++++
3 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/gcc/configure b/gcc/configure
index aa5937df84c..7f9d740e93c 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -7321,10 +7321,10 @@ fi
if test "${enable_coverage+set}" = set; then :
enableval=$enable_coverage; case "${enableval}" in
yes|noopt)
- coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
+ coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0
-fkeep-inline-functions -fkeep-static-functions"
;;
opt)
- coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
+ coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2
-fkeep-inline-functions -fkeep-static-functions"
;;
no)
# a.k.a. --disable-coverage
diff --git a/gcc/configure.ac b/gcc/configure.ac
index d905d0d980a..46b4a80b9a1 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -728,10 +728,10 @@ AC_ARG_ENABLE(coverage,
default is noopt])],
[case "${enableval}" in
yes|noopt)
- coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
+ coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0
-fkeep-inline-functions -fkeep-static-functions"
;;
opt)
- coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
+ coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2
-fkeep-inline-functions -fkeep-static-functions"
;;
no)
# a.k.a. --disable-coverage
diff --git a/gcc/doc/gcov.texi b/gcc/doc/gcov.texi
index 706aa6cf0b0..c527b89f13b 100644
--- a/gcc/doc/gcov.texi
+++ b/gcc/doc/gcov.texi
@@ -327,6 +327,11 @@ non-exceptional paths or only exceptional paths such as
C++ exception
handlers, respectively. Given @samp{-a} option, unexecuted blocks are
marked @samp{$$$$$} or @samp{%%%%%}, depending on whether a basic block
is reachable via non-exceptional or exceptional paths.
+Note that GCC can perform function removal for functions obviously not
+used in a compilation unit. Such functions are marked with @samp{-}
+even though they contain a code. Use @option{-fkeep-inline-functions} and
+@option{-fkeep-static-functions} in order to properly
+record @var{execution_count} of such functions.
Some lines of information at the start have @var{line_number} of zero.
These preamble lines are of the form
--
2.14.2
