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This commit is contained in:
Nikolaj Bjorner 2024-02-19 00:05:37 +07:00
parent 388b2f5eec
commit 046db662f9
9 changed files with 722 additions and 166 deletions
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32
src/ast/sls/bv_sls_fixed.cpp
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@ -54,6 +54,7 @@ namespace bv {
void sls_fixed::init_range(app* e, bool sign) {
expr* s, * t, * x, * y;
rational a, b;
unsigned idx;
auto N = [&](expr* s) {
auto b = bv.get_bv_size(s);
return b > 0 ? rational::power_of_two(b - 1) : rational(0);
@ -98,6 +99,19 @@ namespace bv {
get_offset(t, y, b);
init_range(x, a + N(s), y, b + N(s), !sign);
}
else if (!sign && m.is_eq(e, s, t)) {
if (bv.is_numeral(s, a))
// t - a <= 0
init_range(t, -a, nullptr, rational(0), !sign);
else if (bv.is_numeral(t, a))
init_range(s, -a, nullptr, rational(0), !sign);
}
else if (bv.is_bit2bool(e, s, idx)) {
auto& val = wval0(s);
val.set(val.bits, idx, !sign);
val.set(val.fixed, idx, true);
val.init_fixed();
}
}
//
@ -167,6 +181,7 @@ namespace bv {
auto& val_el = wval0(e->get_arg(2));
for (unsigned i = 0; i < val.nw; ++i)
val.fixed[i] = val_el.fixed[i] & val_th.fixed[i] & ~(val_el.bits[i] ^ val_th.bits[i]);
val.init_fixed();
}
}
@ -224,6 +239,13 @@ namespace bv {
v.fixed[i] = (a.fixed[i] & b.fixed[i]) | (a.fixed[i] & a.bits[i]) | (b.fixed[i] & b.bits[i]);
break;
}
case OP_BXOR: {
auto& a = wval0(e->get_arg(0));
auto& b = wval0(e->get_arg(1));
for (unsigned i = 0; i < a.nw; ++i)
v.fixed[i] = a.fixed[i] & b.fixed[i];
break;
}
case OP_BNOT: {
auto& a = wval0(e->get_arg(0));
for (unsigned i = 0; i < a.nw; ++i)
@ -331,9 +353,9 @@ namespace bv {
// if 0 < b < v.bw is known, then inherit shift of fixed values of a
// if 0 < b < v.bw but not known, then inherit run lengths of equal bits of a
// that are fixed.
NOT_IMPLEMENTED_YET();
break;
}
case OP_BASHR:
case OP_BLSHR:
case OP_INT2BV:
@ -352,10 +374,9 @@ namespace bv {
case OP_BUREM0:
case OP_BSMOD:
case OP_BSMOD_I:
case OP_BSMOD0:
case OP_BXOR:
case OP_BSMOD0:
case OP_BXNOR:
NOT_IMPLEMENTED_YET();
// NOT_IMPLEMENTED_YET();
break;
case OP_BV_NUM:
case OP_BIT0:
@ -381,6 +402,7 @@ namespace bv {
case OP_SLT:
UNREACHABLE();
break;
}
}
v.init_fixed();
}
}