[FFmpeg-cvslog] x86inc: warn if XOP integer FMA instruction emulation is impossible

[Anton Mitrofanov]

ffmpeg | branch: master | Anton Mitrofanov <BugMaster at narod.ru> | Sat Aug  1 17:27:31 2015 +0200| [8c75ba55a4367c854b577c849ea2195bd78c4c81] | committer: Anton Khirnov

x86inc: warn if XOP integer FMA instruction emulation is impossible

Emulation requires a temporary register if arguments 1 and 4 are the same; this
doesn't obey the semantics of the original instruction, so we can't emulate
that in x86inc.

Also add pmacsdql emulation.

Signed-off-by: Henrik Gramner <henrik at gramner.com>
Signed-off-by: Anton Khirnov <anton at khirnov.net>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8c75ba55a4367c854b577c849ea2195bd78c4c81
---

 libavutil/x86/x86inc.asm |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/libavutil/x86/x86inc.asm b/libavutil/x86/x86inc.asm
index a6e1f33..4c0a4bd 100644
--- a/libavutil/x86/x86inc.asm
+++ b/libavutil/x86/x86inc.asm
@@ -1410,15 +1410,18 @@ AVX_INSTR pfmul, 1, 0, 1
     %macro %1 4-7 %1, %2, %3
         %if cpuflag(xop)
             v%5 %1, %2, %3, %4
-        %else
+        %elifnidn %1, %4
             %6 %1, %2, %3
             %7 %1, %4
+        %else
+            %error non-xop emulation of ``%5 %1, %2, %3, %4'' is not supported
         %endif
     %endmacro
 %endmacro
 
-FMA_INSTR  pmacsdd,  pmulld, paddd
 FMA_INSTR  pmacsww,  pmullw, paddw
+FMA_INSTR  pmacsdd,  pmulld, paddd ; sse4 emulation
+FMA_INSTR pmacsdql,  pmuldq, paddq ; sse4 emulation
 FMA_INSTR pmadcswd, pmaddwd, paddd
 
 ; tzcnt is equivalent to "rep bsf" and is backwards-compatible with bsf.