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static cast: simplify

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This commit is contained in:
Kazuki Sakamoto 2020-06-19 19:09:43 -07:00
parent 6bf75be73b
commit 429d37ff41
1 changed files with 7 additions and 0 deletions
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7
frontends/ast/simplify.cc
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@ -3484,6 +3484,13 @@ replace_fcall_later:;
}
}
break;
case AST_CAST_SIZE:
if (children.at(0)->type == AST_CONSTANT && children.at(1)->type == AST_CONSTANT) {
int width = children[0]->bitsAsConst().as_int();
RTLIL::Const val = children[1]->bitsAsConst(width);
newNode = mkconst_bits(val.bits, children[1]->is_signed);
}
break;
case AST_CONCAT:
string_op = !children.empty();
for (auto it = children.begin(); it != children.end(); it++) {