From: Luke Kenneth Casson Leighton Date: Tue, 26 Dec 2023 19:58:54 +0000 (+0000) Subject: bug 1155: experimenting with bigmul / triangle / modulo X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=433c1fc100b883d8e89042fc3beef0600c8275b6;p=openpower-isa.git bug 1155: experimenting with bigmul / triangle / modulo https://bugs.libre-soc.org/show_bug.cgi?id=1155#c30 --- diff --git a/src/openpower/decoder/isa/remapyield.py b/src/openpower/decoder/isa/remapyield.py index 389cfb6b..856b2b89 100644 --- a/src/openpower/decoder/isa/remapyield.py +++ b/src/openpower/decoder/isa/remapyield.py @@ -3,9 +3,12 @@ # python "yield" can be iterated. use this to make it clear how # the indices are generated by using natural-looking nested loops -def iterate_indices(SVSHAPE): +def iterate_indices(SVSHAPE, VL=None): # establish if this is triangular mode - triangle = SVSHAPE.mode == 0b11 and SVSHAPE.submode == 0b00 + triangle = SVSHAPE.mode == 0b11 and SVSHAPE.submode & 0b10 == 0b10 + bigmul = SVSHAPE.mode == 0b11 and SVSHAPE.submode & 0b01 == 0b01 + in_offs = VL is not None and SVSHAPE.mode == 0b11 + # get indices to iterate over, in the required order xd = SVSHAPE.lims[0] yd = SVSHAPE.lims[1] @@ -50,18 +53,31 @@ def iterate_indices(SVSHAPE): # "order" to say which ones get stacked on result = 0 mult = 1 + if in_offs: + if SVSHAPE.submode2 & 0b001 == 0b001: # cols + ix, ddbg = yi, "x" + else: + ix, ddbg = xi, "y" + for i in range(3): lim, idx, dbg = vals[i] # some of the dimensions can be "skipped". the order # was actually selected above on all 3 dimensions, # e.g. [z][x][y] or [y][z][x]. "skip" allows one of # those to be knocked out - #print ("select %d %s" % (i, dbg)) - if SVSHAPE.mode == 0b00: # Matrix Mode + #print ("select %d %s idx %d" % (i, dbg, idx), VL, + # xi, yi, zi) + # modulo+offset? + if in_offs and dbg == ddbg: + ni = (idx + ix*SVSHAPE.offset) % lim + #print ("mod", idx, ni, yi, SVSHAPE.offset, lim) + idx = ni + + if not bigmul: # Matrix Mode if SVSHAPE.skip == i+1: continue idx *= mult # shifts up by previous dimension(s) result += idx # adds on this dimension - if SVSHAPE.mode == 0b00: # Matrix Mode + if not bigmul: # Matrix Mode mult *= lim # for the next dimension loopends = (x_end | @@ -70,22 +86,25 @@ def iterate_indices(SVSHAPE): if hasattr(SVSHAPE, "postprocess"): # for Indexed mode result = SVSHAPE.postprocess(result, step) - yield result + SVSHAPE.offset, loopends + if not in_offs: + result += SVSHAPE.offset + yield result, loopends step += 1 -def dump_shape(SVSHAPE0): + +def dump_shape(SVSHAPE, VL=None): # enumerate over the iterator function, getting new indices - for idx, (new_idx, end) in enumerate(iterate_indices(SVSHAPE0)): + for idx, (new_idx, end) in enumerate(iterate_indices(SVSHAPE, VL=VL)): estring = bin(end)[2:] if end else '' print ("%2d->%-2d" % (idx, new_idx), "%2s" % estring, end=' ') if end == 0b111: print() break - triangle = SVSHAPE0.mode == 0b11 and SVSHAPE0.submode == 0b00 + triangle = SVSHAPE.mode == 0b11 and SVSHAPE.submode & 0b10 == 0b10 if triangle: - if SVSHAPE0.lims[0] == 1: end &= ~0b001 + if SVSHAPE.lims[0] == 1: end &= ~0b001 if triangle: - if SVSHAPE0.lims[1] == 1: end &= ~0b010 + if SVSHAPE.lims[1] == 1: end &= ~0b010 if end != 0: print() @@ -103,6 +122,7 @@ def demo(): SVSHAPE0.order = [1,0,2] # experiment with different permutations, here SVSHAPE0.mode = 0b00 SVSHAPE0.skip = 0b00 + SVSHAPE0.submode2 = 0b000 # SVSHAPE0.offset = 0 # experiment with different offset, here SVSHAPE0.invxyz = [0,0,0] # inversion if desired @@ -116,6 +136,8 @@ def demo(): SVSHAPE0.order = [0,1,2] # experiment with different permutations, here SVSHAPE0.mode = 0b11 SVSHAPE0.submode = 0b01 # rhombus mode + SVSHAPE0.submode2 = 0b000 # + SVSHAPE0.skip = 0b00 SVSHAPE0.offset = 0 # experiment with different offset, here SVSHAPE0.invxyz = [0,0,0] # inversion if desired @@ -123,17 +145,50 @@ def demo(): # triangle print("\ntriangle", xdim, ydim, zdim) - xdim, ydim, zdim = 1, 5, 5 # set the dimension sizes here + xdim, ydim, zdim = 1, 3, 5 # set the dimension sizes here SVSHAPE0 = SVSHAPE() SVSHAPE0.lims = [xdim, ydim, zdim] SVSHAPE0.order = [0,1,2] # experiment with different permutations, here SVSHAPE0.mode = 0b11 - SVSHAPE0.submode = 0b00 # triangle mode + SVSHAPE0.submode = 0b10 # triangle mode + SVSHAPE0.submode2 = 0b000 # + SVSHAPE0.skip = 0b00 + SVSHAPE0.offset = 0 # experiment with different offset, here + SVSHAPE0.invxyz = [0,0,0] # inversion if desired + + # triangle + print("\ntriangle-bigmul", xdim, ydim, zdim) + xdim, ydim, zdim = 1, 3, 5 # set the dimension sizes here + SVSHAPE0 = SVSHAPE() + SVSHAPE0.lims = [xdim, ydim, zdim] + SVSHAPE0.order = [0,1,2] # experiment with different permutations, here + SVSHAPE0.mode = 0b11 + SVSHAPE0.submode = 0b11 # triangle mode, with sum + SVSHAPE0.submode2 = 0b000 # + SVSHAPE0.skip = 0b00 SVSHAPE0.offset = 0 # experiment with different offset, here SVSHAPE0.invxyz = [0,0,0] # inversion if desired dump_shape(SVSHAPE0) + VL = 12 # modulo + + # matrix modulo + xdim, ydim, zdim = 4, 4, 1 # set the dimension sizes here + print("\nmatrix modulo(%d)" % VL, xdim, ydim, zdim) + SVSHAPE0 = SVSHAPE() + SVSHAPE0.lims = [xdim, ydim, zdim] + SVSHAPE0.order = [0,1,2] # experiment with different permutations, here + SVSHAPE0.mode = 0b11 + SVSHAPE0.submode = 0b00 # + SVSHAPE0.skip = 0b00 + SVSHAPE0.submode2 = 0b000 # cols or rows modulo + SVSHAPE0.offset = 1 # experiment with different offset, here + SVSHAPE0.invxyz = [0,0,0] # inversion if desired + + dump_shape(SVSHAPE0, VL=VL) + + # run the demo if __name__ == '__main__': demo()