[Opus] Update to v1.2.1

third_party/opus/src/celt/arm/fixed_armv4.h

 /* Copyright (C) 2013 Xiph.Org Foundation and contributors */
 /*
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
    are met:
 
    - Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
 
    - Redistributions in binary form must reproduce the above copyright
@@ skipping 19 matching lines @@
 /** 16x32 multiplication, followed by a 16-bit shift right. Results fits in 32 bits */
 #undef MULT16_32_Q16
 static OPUS_INLINE opus_val32 MULT16_32_Q16_armv4(opus_val16 a, opus_val32 b)
 {
   unsigned rd_lo;
   int rd_hi;
   __asm__(
       "#MULT16_32_Q16\n\t"
       "smull %0, %1, %2, %3\n\t"
       : "=&r"(rd_lo), "=&r"(rd_hi)
-      : "%r"(b),"r"(a<<16)
+      : "%r"(b),"r"(SHL32(a,16))
   );
   return rd_hi;
 }
 #define MULT16_32_Q16(a, b) (MULT16_32_Q16_armv4(a, b))
 
 
 /** 16x32 multiplication, followed by a 15-bit shift right. Results fits in 32 bits */
 #undef MULT16_32_Q15
 static OPUS_INLINE opus_val32 MULT16_32_Q15_armv4(opus_val16 a, opus_val32 b)
 {
   unsigned rd_lo;
   int rd_hi;
   __asm__(
       "#MULT16_32_Q15\n\t"
       "smull %0, %1, %2, %3\n\t"
       : "=&r"(rd_lo), "=&r"(rd_hi)
-      : "%r"(b), "r"(a<<16)
+      : "%r"(b), "r"(SHL32(a,16))
   );
   /*We intentionally don't OR in the high bit of rd_lo for speed.*/
-  return rd_hi<<1;
+  return SHL32(rd_hi,1);
 }
 #define MULT16_32_Q15(a, b) (MULT16_32_Q15_armv4(a, b))
 
 
 /** 16x32 multiply, followed by a 15-bit shift right and 32-bit add.
     b must fit in 31 bits.
     Result fits in 32 bits. */
 #undef MAC16_32_Q15
 #define MAC16_32_Q15(c, a, b) ADD32(c, MULT16_32_Q15(a, b))
 
 /** 16x32 multiply, followed by a 16-bit shift right and 32-bit add.
     Result fits in 32 bits. */
 #undef MAC16_32_Q16
 #define MAC16_32_Q16(c, a, b) ADD32(c, MULT16_32_Q16(a, b))
 
 /** 32x32 multiplication, followed by a 31-bit shift right. Results fits in 32 bits */
 #undef MULT32_32_Q31
 #define MULT32_32_Q31(a,b) (opus_val32)((((opus_int64)(a)) * ((opus_int64)(b)))>>31)
 
 #endif