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bugfixes

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This commit is contained in:
Nikolaj Bjorner 2024-02-20 20:42:32 -08:00
parent d7e419b7ed
commit 9cde4f7e05
5 changed files with 58 additions and 25 deletions
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19
src/ast/sls/bv_sls_fixed.cpp
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@ -12,6 +12,7 @@ Author:
--*/
#include "ast/ast_pp.h"
#include "ast/ast_ll_pp.h"
#include "ast/sls/bv_sls_fixed.h"
#include "ast/sls/bv_sls_eval.h"
@ -138,6 +139,7 @@ namespace bv {
v.add_range(-b, a - b);
}
else if (!y) {
if (mod(b + 1, rational::power_of_two(bv.get_bv_size(x))) == 0)
return;
auto& v = wval0(x);
@ -300,21 +302,28 @@ namespace bv {
if (j > 0 && k > 0) {
for (unsigned i = 0; i < std::min(k, j); ++i)
for (unsigned i = 0; i < std::min(k, j); ++i) {
SASSERT(!v.get(v.bits, i));
v.set(v.fixed, i, true);
}
}
// lower zj + jk bits are 0
if (zk > 0 || zj > 0) {
for (unsigned i = 0; i < zk + zj; ++i)
for (unsigned i = 0; i < zk + zj; ++i) {
SASSERT(!v.get(v.bits, i));
v.set(v.fixed, i, true);
}
}
// upper bits are 0, if enough high order bits of a, b are 0.
if (hzj < v.bw && hzk < v.bw && hzj + hzk > v.bw) {
// TODO - buggy
if (false && hzj < v.bw && hzk < v.bw && hzj + hzk > v.bw) {
hzj = v.bw - hzj;
hzk = v.bw - hzk;
for (unsigned i = hzj + hzk - 1; i < v.bw; ++i)
for (unsigned i = hzj + hzk - 1; i < v.bw; ++i) {
SASSERT(!v.get(v.bits, i));
v.set(v.fixed, i, true);
}
}
}
break;
}
case OP_CONCAT: {