MAINTAINERS: add myself to write-after-approval list.

2014-10-15  Max Filippov  <jcmvbkbc@gmail.com>

    * MAINTAINERS (write-after-approval): Add myself.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@216232 138bc75d-0d04-0410-961f-82ee72b054a4
xtensa: drop unimplemented floating point operations

xtensa ISA never implemented FP division, reciprocal, square root and
inverse square root as single opcode. Remove patterns that can emit
them.

2014-10-09  Max Filippov  <jcmvbkbc@gmail.com>

gcc/
    * config/xtensa/xtensa.md (divsf3, *recipsf2, sqrtsf2, *rsqrtsf2):
    remove.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@216233 138bc75d-0d04-0410-961f-82ee72b054a4
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.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@216234 138bc75d-0d04-0410-961f-82ee72b054a4