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[Bug c/18152] New: corrupted profile info after optimized compilation and --fprofile-use


Hi,

When trying to compile a file compiled with optimized flag, I got the following
error :


gcc -DHAVE_CONFIG_H -I.    -O3 -DDBUG_OFF -Wimplicit -Wreturn-type -Wswitch
-Wtrigraphs -Wcomment -W -Wchar-subscripts -Wformat -Wparentheses -Wsign-compare
-Wwrite-strings -Wunused -mtune=athlon-mp -march=athlon-mp -mfpmath=sse -mmmx
-msse -m3dnow -O3 -fomit-frame-pointer -fmove-all-movables -freduce-all-givs
-frename-registers -fprofile-use -fbranch-target-load-optimize2   -MT
ctype-latin1.o -MD -MP -MF ".deps/ctype-latin1.Tpo" -c -o ctype-latin1.o
ctype-latin1.c;
ctype-latin1.c: In function `my_mb_wc_latin1':
ctype-latin1.c:363: error: corrupted profile info: number of executions for edge
3-4 thought to be 13
ctype-latin1.c:363: error: corrupted profile info: number of executions for edge
3-5 thought to be -12

However if I compile the file without the -O3 flag, it only issues warning :

gcc -DHAVE_CONFIG_H -I.    -DDBUG_OFF -Wimplicit -Wreturn-type -Wswitch
-Wtrigraphs -Wcomment -W -Wchar-subscripts -Wformat -Wparentheses -Wsign-compare
-Wwrite-strings -Wunused -mtune=athlon-mp -march=athlon-mp -mfpmath=sse -mmmx
-msse -m3dnow -fomit-frame-pointer -fmove-all-movables -freduce-all-givs
-frename-registers -fprofile-use -fbranch-target-load-optimize2   -MT
ctype-latin1.o -MD -MP -MF ".deps/ctype-latin1.Tpo" -c -o ctype-latin1.o
ctype-latin1.c;    
ctype-latin1.c: In function `my_mb_wc_latin1':
ctype-latin1.c:363: warning: no coverage for function 'my_mb_wc_latin1' found.
ctype-latin1.c: In function `my_wc_mb_latin1':
ctype-latin1.c:379: warning: no coverage for function 'my_wc_mb_latin1' found.
ctype-latin1.c: In function `my_strnncoll_latin1_de':
ctype-latin1.c:570: warning: no coverage for function 'my_strnncoll_latin1_de'
found.
ctype-latin1.c: In function `my_strnncollsp_latin1_de':
ctype-latin1.c:633: warning: no coverage for function 'my_strnncollsp_latin1_de'
found.
ctype-latin1.c: In function `my_strnxfrm_latin1_de':
ctype-latin1.c:651: warning: no coverage for function 'my_strnxfrm_latin1_de' found.
ctype-latin1.c: In function `my_hash_sort_latin1_de':
ctype-latin1.c:677: warning: no coverage for function 'my_hash_sort_latin1_de'
found.

So it seems something is wrong with profile-generate / profile-use in this case.

I'm uploading the c, gcda and h files to reproduce the problem with profile-use.

Thanks,
  Jocelyn

-- 
           Summary: corrupted profile info after optimized compilation and -
                    -fprofile-use
           Product: gcc
           Version: 3.4.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: joc at presence-pc dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18152


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