------- Comment #6 from changpeng dot fang at amd dot com 2010-05-21 21:36
-------
(In reply to comment #5)
> The fix introduced:
>
> FAIL: gcc.dg/tree-ssa/prefetch-7.c scan-assembler-times movnti 18
> FAIL: gcc.dg/tree-ssa/prefetch-7.c scan-tree-dump-times optimized "={nt}" 18
>
> on Linux/ia32.
>
It seems the unrolling is quite different for different architecture. The count
of movnti in and assembly code depends on the unroll_factor.
I would propose to remove the movnti check in the assembly code. The dump
in aprefetch shows there are two non-temporal stores generated and this is
enough.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44185
