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[gamecode] Compact the convert instructions into one

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Thanks to Deek for the suggestion: the mode (ie, src and dst types) are
encoded in st->b. Actual code not written yet, but this frees up 13
instructions: now have 74 available for really interesting stuff :)
This commit is contained in:
Bill Currie 2022-01-10 11:53:57 +09:00
parent b9e32ee2f5
commit 0fb6619585
1 changed files with 7 additions and 25 deletions
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32
libs/gamecode/opcodes.py
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@ -11,6 +11,7 @@ bitmap_txt = """
0 0101 1100 return (size in st->c)
0 0110 0nnn
0 0110 1100 convert (conversion mode in st->b)
0 0110 1101 with (mode in st->a, value in st->b, reg in st->c)
0 0110 111t state
0 0111 tooo vecops
@ -22,7 +23,7 @@ bitmap_txt = """
1 1000 ooss bitops
1 1001 t1ss scale
1 1001 t100 swizzle
1 1010 d1xx convert
1 1010 d1xx
1 1011 00mm lea
1 1011 01ss any
1 1011 0100 lea_e
@ -32,7 +33,7 @@ bitmap_txt = """
1 1011 1100 popregs
1 1101 01oo move
1 1101 11oo memset
1 1110 d1xx convert2
1 1110 d1xx
1 11dd t100 vecops2
1 1100 ooss boolops
n 1111 nnnn
@ -176,31 +177,13 @@ compare2_formats = {
},
}
convert_formats = {
"opcode": "OP_CONV_{op_conv[d*4+xx]}",
"mnemonic": "conv.{op_conv[d*4+xx]}",
"opcode": "OP_CONV",
"mnemonic": "conv",
"opname": "conv",
"format": "%Ga %gc",
"format": "%Ga %Cb %gc",
"widths": "1, 0, 1",
"types": "{cnv_types[xx][d]}, ev_invalid, {cnv_types[xx][1-d]}",
"args": {
"op_conv": ["IF", "LD", "uF", "UD", "FI", "DL", "Fu", "DU"],
"cnv_types": [
["ev_integer", "ev_float"],
["ev_long", "ev_double"],
["ev_uinteger", "ev_float"],
["ev_ulong", "ev_double"],
],
},
"types": "ev_void, ev_short, ev_void",
}
convert2_formats = copy.deepcopy (convert_formats)
convert2_formats["args"]["op_conv"] = [None, "IL", "uU", "FD",
None, "LI", "Uu", "DF"]
convert2_formats["args"]["cnv_types"] = [
[None, None],
["ev_integer", "ev_long"],
["ev_uinteger", "ev_ulong"],
["ev_float", "ev_double"],
]
lea_formats = {
"opcode": "OP_LEA_{op_mode[mm]}",
"mnemonic": "lea",
@ -494,7 +477,6 @@ group_map = {
"compare": compare_formats,
"compare2": compare2_formats,
"convert": convert_formats,
"convert2": convert2_formats,
"lea": lea_formats,
"lea_e": lea_e_formats,
"load": load_formats,