Commit Graph

3 Commits

Author SHA1 Message Date
Saleem Abdulrasool 36ac5ddff7 builtins: expand out the AEABI function stubs
These actually may change calling conventions.  We cannot simply provide
function aliases as the aliased function may have a different calling
convention.  Provide a forwarding function instead to permit the
compiler to synthesize the calling convention adjustment thunk.

Remove the `ARM_EABI_FNALIAS` macro as that is not safe to use.

Resolves PR33030!

llvm-svn: 303188
2017-05-16 16:41:37 +00:00
Oliver Stannard 28d2edad5b Add ARM RTABI aliases for half-precision conversions
The ARM RTABI defines these functions as __aeabi_h2f, __aeabi_f2h and
__aeabi_d2h, so we need aliases for them.

llvm-svn: 249559
2015-10-07 16:15:22 +00:00
Ahmed Bougacha f1ac850e77 [Builtins] Implement half-precision conversions.
Mostly uninteresting, except:
- in __extendXfYf2, when checking if the number is normal, the old
  code relied on the unsignedness of src_rep_t, which is a problem
  when sizeof(src_rep_t) < sizeof(int): the result gets promoted to
  int, the signedness of which breaks the comparison.
  I added an explicit cast; it shouldn't affect other types.
- we can't pass __fp16, so src_t and src_rep_t are the same.
- the gnu_*_ieee symbols are simply duplicated definitions, as aliases
  are problematic on mach-o (where only weak aliases are supported;
  that's not what we want).

Differential Revision: http://reviews.llvm.org/D9693

llvm-svn: 237161
2015-05-12 18:33:42 +00:00