[x264-devel] x86inc: Fix VEX -> EVEX instruction conversion

[Henrik Gramner]

x264 | branch: master | Henrik Gramner <henrik at gramner.com> | Sat Mar 31 01:16:06 2018 +0200| [0a84d986e7020f8344f00752e3600b9769cc1e85] | committer: Henrik Gramner

x86inc: Fix VEX -> EVEX instruction conversion

There's an edge case that wasn't properly handled.

> http://git.videolan.org/gitweb.cgi/x264.git/?a=commit;h=0a84d986e7020f8344f00752e3600b9769cc1e85
---

 common/x86/x86inc.asm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/common/x86/x86inc.asm b/common/x86/x86inc.asm
index 5ec29e29..49e73d65 100644
--- a/common/x86/x86inc.asm
+++ b/common/x86/x86inc.asm
@@ -1654,6 +1654,11 @@ FMA4_INSTR fnmsub,   pd, ps, sd, ss
                 %assign %%evex_required 1
             %endif
         %endif
+        %ifnum regnumof%3
+            %if regnumof%3 >= 16 || sizeof%3 > 32
+                %assign %%evex_required 1
+            %endif
+        %endif
         %if %%evex_required
             %6 %%args
         %else