erts/hipe: unbreak arity 4 BIFs

This fixes arity 4 BIF support in HiPE, following its introduction
on master (OTP 18) via the nox/ets-update_counter-4 merge.

- define standard_bif_interface_4, nbif_4_gc_after_bif, and
  nbif_4_simple_exception on ARM: unbreaks the build on ARM
- remove bogus stack re-alignment from standard_bif_interface_4
  on AMD64: for 4-arg BIFs the stack is already aligned, and the
  code would misalign the C stack which violates the ABI and may
  cause alignment faults in vectorized code
- the nbif_4_simple_exception OPD name on PPC64 was incorrectly
  using the nbif_3_simple_exception OPD name: this would have
  caused a multiple definition error in the assembler or linker

In addition there are a few cleanups:

- fix standard_bif_interface_N comment on x86
- fix standard_bif_interface_4 comment on SPARC
- separate nbif_N_simple_exception blocks by empty lines on PPC,
  like on ARM, to clearly show which things belong together
- fix standard_bif_interface_N comment on ARM
- fix standard_bif_interface_4 on AMD64 to match the indentation
  and spacing conventions of the rest of that file

1 files changed, 1 insertions, 1 deletions

diff --git a/erts/emulator/hipe/hipe_x86_bifs.m4 b/erts/emulator/hipe/hipe_x86_bifs.m4
index b0064ee628..bf549c90e4 100644
--- a/erts/emulator/hipe/hipe_x86_bifs.m4
+++ b/erts/emulator/hipe/hipe_x86_bifs.m4
@@ -51,7 +51,7 @@ define(HANDLE_GOT_MBUF,`
  * standard_bif_interface_4(nbif_name, cbif_name)
  * standard_bif_interface_0(nbif_name, cbif_name)
  *
- * Generate native interface for a BIF with 0-3 parameters and
+ * Generate native interface for a BIF with 0-4 parameters and
  * standard failure mode.
  */
 define(standard_bif_interface_1,