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Re: PATCH: Disable x87 inline functions when SSE math is enabled
- From: Roland McGrath <roland at hack dot frob dot com>
- To: "H.J. Lu" <hjl dot tools at gmail dot com>
- Cc: GNU C Library <libc-alpha at sourceware dot org>
- Date: Thu, 14 Jun 2012 11:01:20 -0700 (PDT)
- Subject: Re: PATCH: Disable x87 inline functions when SSE math is enabled
- References: <20120612181621.GA29440@intel.com>
I think this is probably OK, but I just don't know that much about the area.
Does this leave any function that previously had an inline and now has none?
The GCC manual seems to indicate that -mfpath=sse -msse (without -msse2)
will use x87 code for double-precision operations. So it seems appropriate
that this mode have x87 inlines for double libm calls too.