[Bug rtl-optimization/53190] CSE (?) CSEs asms

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53190

--- Comment #5 from Uros Bizjak <ubizjak at gmail dot com> 2012-05-03 08:15:00 UTC ---
(In reply to comment #4)

> So you say that it's correct for CSE to CSE asm()s if they have the same
> asm string and the same asm operands in case the asm is not volatile?  I was
> not aware we would do that ;)  (but yes, it sounds like a reasonable thing)

There is nothing that prevents gcc from doing this...

BTW: fpsr is FP *status* register, an x87 CC-like internal register. This asm
should probably depend on fpcr, a FP *control* register.

In fact, there are two FP control registers, x87 and SSE one. The later is not
handled at all.