[Bug target/63250] Complex fp16 arithmetic uses nonexistent libgcc functions

[jgreenhalgh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63250

--- Comment #4 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
Author: jgreenhalgh
Date: Fri Sep  9 09:40:22 2016
New Revision: 240043

URL: https://gcc.gnu.org/viewcvs?rev=240043&root=gcc&view=rev
Log:
[Patch libgcc] Enable HCmode multiply and divide (mulhc3/divhc3)

This patch arranges for half-precision complex multiply and divide
routines to be built if __LIBGCC_HAS_HF_MODE__.  This will be true
if the target supports the _Float16 type.

libgcc/

        PR target/63250
        *  Makefile.in (lib2funcs): Build _mulhc3 and _divhc3.
        * libgcc2.h (LIBGCC_HAS_HF_MODE): Conditionally define.
        (HFtype): Likewise.
        (HCtype): Likewise.
        (__divhc3): Likewise.
        (__mulhc3): Likewise.
        * libgcc2.c: Support _mulhc3 and _divhc3.


Modified:
    trunk/libgcc/ChangeLog
    trunk/libgcc/Makefile.in
    trunk/libgcc/libgcc2.c
    trunk/libgcc/libgcc2.h