This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug jit/64722] On 2nd time libgccjit is run in-process on i686, generated code clobbers %ebx register
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 22 Jan 2015 13:29:23 +0000
- Subject: [Bug jit/64722] On 2nd time libgccjit is run in-process on i686, generated code clobbers %ebx register
- Auto-submitted: auto-generated
- References: <bug-64722-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64722
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can you explain it? Usually when this function is called, pic_offset_table_rtx
is NULL and your i386.h macro relies on that.
When initializing default target during initialization it is NULL of course,
and apparently even in target_reinit, when it is called with freshly cleared
heap object for the non-default target.
It is just when jit calls the initialization again without clearing all the
variables...
So I believe my proposed change is correct.
In any case, perhaps jit shouldn't reinitialize everything all the time, at
least if the compilation options don't change.