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separate out enum_item/param implementation when they should be different

This commit is contained in:
Jeff Wang 2020-02-03 01:08:16 -05:00 committed by Jeff Wang
parent 98c6bd7630
commit 6320f2692b
1 changed files with 16 additions and 7 deletions
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23
frontends/ast/simplify.cc
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@ -324,7 +324,7 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage,
const_fold = true;
// in certain cases a function must be evaluated constant. this is what in_param controls.
if (type == AST_PARAMETER || type == AST_LOCALPARAM || type == AST_ENUM_ITEM || type == AST_DEFPARAM || type == AST_PARASET || type == AST_PREFIX)
if (type == AST_PARAMETER || type == AST_LOCALPARAM || type == AST_DEFPARAM || type == AST_PARASET || type == AST_PREFIX)
in_param = true;
std::map<std::string, AstNode*> backup_scope;
@ -418,8 +418,6 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage,
if (current_scope.count(enode->str) == 0) {
current_scope[enode->str] = enode;
}
// while (enode->simplify(true, false, false, 1, -1, false, true))
// did_something = true;
}
}
}
@ -431,7 +429,7 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage,
if (node->type == AST_ENUM) {
for (auto enode : node->children){
log_assert(enode->type==AST_ENUM_ITEM);
while (node->simplify(true, false, false, 1, -1, false, node->type == AST_ENUM_ITEM))
while (node->simplify(true, false, false, 1, -1, false, in_param))
did_something = true;
}
}
@ -511,10 +509,10 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage,
break;
case AST_ENUM:
// log("\nENUM %d child %d\n", basic_prep, children[0]->basic_prep);
//log("\nENUM %s: %d child %d\n", str.c_str(), basic_prep, children[0]->basic_prep);
if (!basic_prep) {
for (auto item_node : children) {
while (!item_node->basic_prep && item_node->simplify(false, false, false, stage, -1, false, true) == true)
while (!item_node->basic_prep && item_node->simplify(false, false, false, stage, -1, false, in_param))
did_something = true;
}
// allocate values (called more than once)
@ -524,7 +522,6 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage,
case AST_PARAMETER:
case AST_LOCALPARAM:
case AST_ENUM_ITEM:
while (!children[0]->basic_prep && children[0]->simplify(false, false, false, stage, -1, false, true) == true)
did_something = true;
children[0]->detectSignWidth(width_hint, sign_hint);
@ -536,6 +533,18 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage,
width_hint = max(width_hint, children[1]->range_left - children[1]->range_right + 1);
}
break;
case AST_ENUM_ITEM:
while (!children[0]->basic_prep && children[0]->simplify(false, false, false, stage, -1, false, in_param))
did_something = true;
children[0]->detectSignWidth(width_hint, sign_hint);
if (children.size() > 1 && children[1]->type == AST_RANGE) {
while (!children[1]->basic_prep && children[1]->simplify(false, false, false, stage, -1, false, in_param))
did_something = true;
if (!children[1]->range_valid)
log_file_error(filename, linenum, "Non-constant width range on enum item decl.\n");
width_hint = max(width_hint, children[1]->range_left - children[1]->range_right + 1);
}
break;
case AST_TO_BITS:
case AST_TO_SIGNED: