Hi, all Gfortran translates the Fortran 95 intrinsic DNINT to round operation with double precision type argument and return value. Inline round operation will speed up the SPEC CFP2000 benchmark 189.lucas which contains function calls of intrinsic DNINT from 706 (SPEC ratio) to 783 on IA64 1GHz system.
I have implemented the double precison version of
inline round. If it is worth doing, I can go on to
finish the other precision mode versions.
2005-04-07 Canqun Yang <[EMAIL PROTECTED]>
* config/ia64/ia64.md (UNSPEC_ROUND): New
constant.
(floatxfxf2, fix_truncxf2): New instruction
patterns.
(rounddf2): New expander.
(rounddf2_internal): New
define_insn_and_split implementing inline
calculation of DFmode round.
* config/ia64/ia64.opt (-minline-round, -mno-
inline-round): Add new
IA64 options.
* doc/invoke.texi: Ditto.
Canqun Yang
Creative Compiler Research Group.
National University of Defense Technology, China.
ia64.md.diff
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invoke.texi.diff
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