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INLINE | |
u32 index(Ref r) { | |
return r >> 4; | |
} | |
INLINE | |
u32 tag(Ref r) { | |
return r & 15; | |
} | |
extern u32 (*eval_table[16])(u32, u32); | |
INLINE | |
u32 eval(Ref r) { | |
u32 x = nodes[index(r)].x; | |
u32 y = nodes[index(r)].y; | |
return eval_table[tag(r)](x, y); | |
} | |
u32 eval_lit(u32 x, u32 y) { | |
return x; | |
} | |
u32 eval_neg(u32 x, u32 y) { | |
return -eval(x); | |
} | |
u32 eval_not(u32 x, u32 y) { | |
return ~eval(x); | |
} | |
u32 eval_add(u32 x, u32 y) { | |
return eval(x) + eval(y); | |
} | |
u32 eval_sub(u32 x, u32 y) { | |
return eval(x) - eval(y); | |
} | |
u32 eval_and(u32 x, u32 y) { | |
return eval(x) & eval(y); | |
} | |
u32 eval_or(u32 x, u32 y) { | |
return eval(x) | eval(y); | |
} | |
u32 eval_xor(u32 x, u32 y) { | |
return eval(x) ^ eval(y); | |
} | |
u32 eval_lsl(u32 x, u32 y) { | |
return eval(x) << (eval(y) & 31); | |
} | |
u32 eval_lsr(u32 x, u32 y) { | |
return eval(x) >> (eval(y) & 31); | |
} | |
u32 eval_asr(u32 x, u32 y) { | |
return (i32)eval(x) >> (eval(y) & 31); | |
} | |
u32 (*eval_table[16])(u32, u32) = { | |
[LIT] = eval_lit, | |
[NEG] = eval_neg, | |
[NOT] = eval_not, | |
[ADD] = eval_add, | |
[SUB] = eval_sub, | |
[AND] = eval_and, | |
[OR] = eval_or, | |
[XOR] = eval_xor, | |
[LSL] = eval_lsl, | |
[LSR] = eval_lsr, | |
[ASR] = eval_asr, | |
}; |
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