1*** 2 3add gcc builtins for alpha instructions 4 5 6*** 7 8custom expand byteswap into nifty 9extract/insert/mask byte/word/longword/quadword low/high 10sequences 11 12*** 13 14see if any of the extract/insert/mask operations can be added 15 16*** 17 18match more interesting things for cmovlbc cmovlbs (move if low bit clear/set) 19 20*** 21 22lower srem and urem 23 24remq(i,j): i - (j * divq(i,j)) if j != 0 25remqu(i,j): i - (j * divqu(i,j)) if j != 0 26reml(i,j): i - (j * divl(i,j)) if j != 0 27remlu(i,j): i - (j * divlu(i,j)) if j != 0 28 29*** 30 31add crazy vector instructions (MVI): 32 33(MIN|MAX)(U|S)(B8|W4) min and max, signed and unsigned, byte and word 34PKWB, UNPKBW pack/unpack word to byte 35PKLB UNPKBL pack/unpack long to byte 36PERR pixel error (sum across bytes of bytewise abs(i8v8 a - i8v8 b)) 37 38cmpbytes bytewise cmpeq of i8v8 a and i8v8 b (not part of MVI extensions) 39 40this has some good examples for other operations that can be synthesised well 41from these rather meager vector ops (such as saturating add). 42http://www.alphalinux.org/docs/MVI-full.html 43