On 30/09/14 05:26, Jeff Law wrote:
On 09/29/14 12:06, Jiong Wang wrote:
thanks for pointing this out, patch updated.
re-tested, pass x86-64 bootstrap and no regression on check-gcc/g++.
pass aarch64-none-elf cross check also.
ok for trunk?
Yes this is fine.
committed as 215709.
BTW, another bug exposed by linux x86-64 kernel build, and it's at
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63404
the problem is caused by we missed clobber/use check. I will send
a seperate patch for review. really sorry for causing the trouble,
the insn move in generic code is actually not that generic, related
with some backend features...
Noted. These things happen, it's one of the things that makes working
with RTL tough and one of the reasons we made a major focus away from
RTL as the primary IL for optimization work. But for things like
shrink-wrapping, RTL is the right place to be.
thanks for the explanation. Now I fell I get a deeper understanding of why it's
called RTL, the "Register Transfer Language" :)
jeff
