subject:"\[Bug driver\/100937\] configure\: Add \-\-enable\-default\-semantic\-interposition"

[Bug driver/100937] configure: Add --enable-default-semantic-interposition

2021-11-22 Thread hubicka at kam dot mff.cuni.cz via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100937 --- Comment #12 from hubicka at kam dot mff.cuni.cz --- > (The -fno-semantic-interposition thing is probably the biggest performance gap > between gcc -fpic and clang -fpic.) Yep, it is often confusing to users (who do not understand what ELF

Re: [Bug driver/100937] configure: Add --enable-default-semantic-interposition

2021-11-22 Thread Jan Hubicka via Gcc-bugs

> (The -fno-semantic-interposition thing is probably the biggest performance gap > between gcc -fpic and clang -fpic.) Yep, it is often confusing to users (who do not understand what ELF interposition is) that clang and gcc disagree on default flags here. Recently -Ofast was extended to imply

[Bug driver/100937] configure: Add --enable-default-semantic-interposition

2021-11-22 Thread i at maskray dot me via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100937 --- Comment #11 from Fangrui Song --- To enable interposition on Mach-O, one needs a non-default configuration like: ld -interposable, DYLD_FORCE_FLAT_NAMESPACE or __attribute__((section("__DATA,__interpose"))). On PE/COFF, such interposition

[Bug driver/100937] configure: Add --enable-default-semantic-interposition

2021-11-22 Thread frankhb1989 at gmail dot com via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100937 --- Comment #10 from frankhb1989 at gmail dot com --- (In reply to Jonathan Wakely from comment #9) > (In reply to frankhb1989 from comment #7) > The toolchain might not be ELF-specific, but > on targets that *do* use ELF, of course the ELF

[Bug driver/100937] configure: Add --enable-default-semantic-interposition

2021-11-03 Thread redi at gcc dot gnu.org via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100937 --- Comment #9 from Jonathan Wakely --- (In reply to frankhb1989 from comment #7) > GCC and the GNU toolchain are not ELF-specific. Nor are they responsible to > the authority of the specification. That seems like nonsense to me. The toolchain

[Bug driver/100937] configure: Add --enable-default-semantic-interposition

2021-11-02 Thread egallager at gcc dot gnu.org via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100937 Eric Gallager changed: What|Removed |Added See Also||https://gcc.gnu.org/bugzill

[Bug driver/100937] configure: Add --enable-default-semantic-interposition

2021-11-02 Thread frankhb1989 at gmail dot com via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100937 frankhb1989 at gmail dot com changed: What|Removed |Added CC||frankhb1989 at gmail dot

[Bug driver/100937] configure: Add --enable-default-semantic-interposition

2021-06-09 Thread i at maskray dot me via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100937 --- Comment #6 from Fangrui Song --- Then can you add a -fvisibility=protected variant which only applies to non-weak defined functions? Two issues need to be fixed: (1): https://sourceware.org/bugzilla/show_bug.cgi?id=27973

[Bug driver/100937] configure: Add --enable-default-semantic-interposition

2021-06-07 Thread jakub at gcc dot gnu.org via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100937 Jakub Jelinek changed: What|Removed |Added CC||jakub at gcc dot gnu.org --- Comment

[Bug driver/100937] configure: Add --enable-default-semantic-interposition

2021-06-06 Thread pinskia at gcc dot gnu.org via Gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100937 --- Comment #4 from Andrew Pinski --- Also your patch did not change the documentation of the option. Plus the documentation is clear that changing the default is most likely not wanted at all: