http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57056
Steven Fuerst <svfuerst at gmail dot com> changed:
What |Removed |Added
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CC| |svfuerst at gmail dot com
--- Comment #2 from Steven Fuerst <svfuerst at gmail dot com> 2013-04-26
01:23:24 UTC ---
If you use the pextrw instruction, then you can avoid the shift, saving an
instruction.
i.e. Something like:
pextrw $0x3, %xmm0, %rax
and $0x7ff0, %ax
sub $0x7ff0, %ax
sbb %eax, %eax
retq
