libvpx: Pull from upstream

source/libvpx/build/make/ads2gas_apple.pl

 #!/usr/bin/env perl
 ##
 ##  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 ##
 ##  Use of this source code is governed by a BSD-style license
 ##  that can be found in the LICENSE file in the root of the source
 ##  tree. An additional intellectual property rights grant can be found
 ##  in the file PATENTS.  All contributing project authors may
 ##  be found in the AUTHORS file in the root of the source tree.
 ##
@@ skipping 57 matching lines @@
     # Convert :NOT: to ~
     s/:NOT:/ ~ /g;
 
     # Convert :SHL: to <<
     s/:SHL:/ << /g;
 
     # Convert :SHR: to >>
     s/:SHR:/ >> /g;
 
     # Convert ELSE to .else
-    s/ELSE/.else/g;
+    s/\bELSE\b/.else/g;
 
     # Convert ENDIF to .endif
-    s/ENDIF/.endif/g;
+    s/\bENDIF\b/.endif/g;
 
     # Convert ELSEIF to .elseif
-    s/ELSEIF/.elseif/g;
+    s/\bELSEIF\b/.elseif/g;
 
     # Convert LTORG to .ltorg
-    s/LTORG/.ltorg/g;
+    s/\bLTORG\b/.ltorg/g;
 
     # Convert IF :DEF:to .if
     # gcc doesn't have the ability to do a conditional
     # if defined variable that is set by IF :DEF: on
     # armasm, so convert it to a normal .if and then
     # make sure to define a value elesewhere
     if (s/\bIF :DEF:\b/.if /g)
     {
         s/=/==/g;
     }
@@ skipping 59 matching lines @@
     # No vertical bars required; make additional symbol with prepended
     # underscore
     s/^\|(\$?\w+)\|/_$1\n\t$1:/g;
 
     # Labels need trailing colon
 #   s/^(\w+)/$1:/ if !/EQU/;
     # put the colon at the end of the line in the macro
     s/^([a-zA-Z_0-9\$]+)/$1:/ if !/EQU/;
 
     # ALIGN directive
-    s/ALIGN/.balign/g;
+    s/\bALIGN\b/.balign/g;
 
     # Strip ARM
     s/\sARM/@ ARM/g;
 
     # Strip REQUIRE8
     #s/\sREQUIRE8/@ REQUIRE8/g;
     s/\sREQUIRE8/@ /g;
 
     # Strip PRESERVE8
     s/\sPRESERVE8/@ PRESERVE8/g;
 
     # Strip PROC and ENDPROC
     s/\bPROC\b/@/g;
     s/\bENDP\b/@/g;
 
     # EQU directive
     s/(.*)EQU(.*)/.set $1, $2/;
 
     # Begin macro definition
-    if (/MACRO/)
+    if (/\bMACRO\b/)
     {
         # Process next line down, which will be the macro definition
         $_ = <STDIN>;
 
         $trimmed = trim($_);
 
         # remove commas that are separating list
         $trimmed =~ s/,//g;
 
         # string to array
@@ skipping 10 matching lines @@
     }
 
     while (($key, $value) = each(%macro_aliases))
     {
         $key =~ s/\$/\\\$/;
         s/$key\b/$value/g;
     }
 
     # For macros, use \ to reference formal params
 #   s/\$/\\/g;                  # End macro definition
-    s/MEND/.endm/;              # No need to tell it where to stop assembling
+    s/\bMEND\b/.endm/;              # No need to tell it where to stop assembling
     next if /^\s*END\s*$/;
 
     # Clang used by Chromium differs slightly from clang in XCode in what it
     # will accept in the assembly.
     if ($chromium) {
         s/qsubaddx/qsax/i;
         s/qaddsubx/qasx/i;
         s/ldrneb/ldrbne/i;
         s/ldrneh/ldrhne/i;
         s/(vqshrun\.s16 .*, \#)0$/${1}8/i;
 
         # http://llvm.org/bugs/show_bug.cgi?id=16022
         s/\.include/#include/;
     }
 
     print;
 }