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List:       gcc-bugs
Subject:    [Bug other/58944] New: [4.9 Regression] bogus -Wunused-macros warnings when compiling Libreoffice
From:       "octoploid at yandex dot com" <gcc-bugzilla () gcc ! gnu ! org>
Date:       2013-10-31 18:24:25
Message-ID: bug-58944-4 () http ! gcc ! gnu ! org/bugzilla/
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58944

            Bug ID: 58944
           Summary: [4.9 Regression] bogus -Wunused-macros warnings when
                    compiling Libreoffice
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: octoploid at yandex dot com

markus@x4 tmp % cat test.ii
#pragma GCC push_options
#pragma GCC target("xsaveopt")
void fn1(void) {}
#pragma GCC pop_options

markus@x4 tmp % gcc -Wunused-macros -march=native -c test.ii
test.ii:4:9: warning: macro "__code_model_small__" is not used
[-Wunused-macros]
 #pragma GCC pop_options
         ^
test.ii:4:9: warning: macro "__XSAVE__" is not used [-Wunused-macros]
test.ii:4:9: warning: macro "__XSAVEOPT__" is not used [-Wunused-macros]
test.ii:4:24: warning: macro "__amdfam10__" is not used [-Wunused-macros]
 #pragma GCC pop_options
                        ^
test.ii:4:24: warning: macro "__amdfam10" is not used [-Wunused-macros]
test.ii:4:24: warning: macro "__code_model_small__" is not used
[-Wunused-macros]
test.ii:4:24: warning: macro "__tune_amdfam10__" is not used [-Wunused-macros]
markus@x4 tmp %  

The "__tune_amdfam10__" and "__amdfam10" (and maybe "__code_model_small__")
warnings look bogus. 
I've noticed this issue while compiling Libreoffice.
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