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r216234 - in /trunk/gcc: ChangeLog config/xtens...


Author: jcmvbkbc
Date: Wed Oct 15 04:20:03 2014
New Revision: 216234

URL: https://gcc.gnu.org/viewcvs?rev=216234&root=gcc&view=rev
Log:
xtensa: use pre- and postincrement FP load/store when available

Earlier versions of xtensa FPU used to support preincrement FP load and
store instructions (lsiu/ssiu). Recent FPU supports postincrement FP
load and store instructions only (lsip/ssip). Use configuration macro to
decide which version is available.

2014-10-14  Max Filippov  <jcmvbkbc@gmail.com>

gcc/
    * config/xtensa/xtensa.h (TARGET_HARD_FLOAT_POSTINC): new macro.
    * config/xtensa/xtensa.md (*lsiu, *ssiu): add dependency on
    !TARGET_HARD_FLOAT_POSTINC.
    (*lsip, *ssip): new instructions.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/xtensa/xtensa.h
    trunk/gcc/config/xtensa/xtensa.md


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