[AArch64] fcvt instructions - arm_neon.h changes.
gcc/
* config/aarch64/arm_neon.h
(vcvt<sd>_f<32,64>_s<32,64>): Rewrite in C.
(vcvt<q>_f<32,64>_s<32,64>): Rewrite using builtins.
(vcvt_<high_>_f<32,64>_f<32,64>): Likewise.
(vcvt<qsd>_<su><32,64>_f<32,64>): Likewise.
(vcvta<qsd>_<su><32,64>_f<32,64>): Likewise.
(vcvtm<qsd>_<su><32,64>_f<32,64>): Likewise.
(vcvtn<qsd>_<su><32,64>_f<32,64>): Likewise.
(vcvtp<qsd>_<su><32,64>_f<32,64>): Likewise.
gcc/testsuite/
* gcc.target/aarch64/vect-vcvt.c: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@198404 138bc75d-0d04-0410-961f-82ee72b054a4