Broken by 76e831d9.  Without the .type directive, SIGILL may be produced
if the C code is compiled in Thumb mode, because the compiler may assume
that the asm symbol is also Thumb and call it using a BL instruction.

The patch in 76e831d9 got us most of the way there, but
 out-of-tree builds required a second Makefile.am rule, which was
 missing @ARM2GNU_PARAMS@.
Also, the arm2gnu.pl was terminating argument processing on any
 argument beginning with --, rather than an argument that was just
 -- by itself (as is the normal convention in GNU programs).
That meant it never saw the --apple flag even when it was passed.

Thanks to Jonathan Lennox for the report and for testing.

Martin Storsjö authored 11 years ago and Timothy B. Terriberry committed 11 years ago

This allows building the arm assembly for iOS.

This checks for the __APPLE__ preprocessor built-in define to
determine whether this extra handling should be enabled.

Signed-off-by: Timothy B. Terriberry <tterribe@xiph.org>

Martin Storsjö authored 11 years ago and Jean-Marc Valin committed 11 years ago

This is required in order to build using the built-in assembler
in clang.

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

Timothy B. Terriberry authored 11 years ago and Jean-Marc Valin committed 11 years ago

Optimizing celt_pitch_xcorr()/xcorr_kernel() which also speeds up
FIRs, IIRs and auto-correlations

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>