This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug target/53975] [ia64] Target register of a speculative load moved to a branch register prior to the chk.s instruction
- From: "steven at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sun, 15 Jul 2012 21:08:30 +0000
- Subject: [Bug target/53975] [ia64] Target register of a speculative load moved to a branch register prior to the chk.s instruction
- Auto-submitted: auto-generated
- References: <bug-53975-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53975
--- Comment #2 from Steven Bosscher <steven at gcc dot gnu.org> 2012-07-15 21:08:30 UTC ---
FWIW, as far as I understand the ia64 data speculation semantics, it is OK to
use a speculated load, but the check must then be done on the use, i.e. in t
his case chk.s b6.