On 17/04/10 00:03, Emmanuel Benisty wrote:
Just out of curiosity, what is the plan regarding this issue (quoted
from the gcc changelog):
On x86 targets, code containing floating-point calculations may run
significantly slower when compiled with GCC 4.5 in strict C99
conformance mode than they did with earlier GCC versions. This is due
to stricter standard conformance of the compiler and can be avoided by
using the option -fexcess-precision=fast;
From what I understand, this requires passing -std=c99 (or equivalent)
to the compiler for it to use strict C99 mode. So most software will
not be affected. Of course, the maintainer of any software the does set
C99 mode should consider this.
Allan
