[Bug middle-end/60540] Don't convert int to float when comparing int with float (double) constant

pinskia at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Sat Mar 15 15:13:00 GMT 2014


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60540

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Don't convert int to float  |Don't convert int to float
                   |when comparing int with     |when comparing int with
                   |float constant              |float (double) constant

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>In this case an integer comparison could be done instead, which does not require converting the integer variable to float/double.

Well the C standard requires it, though we could optimize it away since 32bit
integers can be exactly represented in a 64bit IEEE double.



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