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Added support for verilog genblock[index].member syntax

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This commit is contained in:
Clifford Wolf 2013-02-26 13:18:22 +01:00
parent 26a192b8c7
commit 4f0c2862a0
4 changed files with 34 additions and 12 deletions
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16
frontends/ast/simplify.cc
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@ -103,7 +103,7 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage)
}
// activate const folding if this is anything that must be evaluated statically (ranges, parameters, attributes, etc.)
if (type == AST_WIRE || type == AST_PARAMETER || type == AST_LOCALPARAM || type == AST_PARASET || type == AST_RANGE)
if (type == AST_WIRE || type == AST_PARAMETER || type == AST_LOCALPARAM || type == AST_PARASET || type == AST_RANGE || type == AST_PREFIX)
const_fold = true;
if (type == AST_IDENTIFIER && current_scope.count(str) > 0 && (current_scope[str]->type == AST_PARAMETER || current_scope[str]->type == AST_LOCALPARAM))
const_fold = true;
@ -179,6 +179,8 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage)
break;
if (type == AST_GENIF && i >= 1)
break;
if (type == AST_PREFIX && i >= 1)
break;
while (did_something_here && i < children.size()) {
bool const_fold_here = const_fold, in_lvalue_here = in_lvalue;
if (i == 0 && type == AST_REPLICATE)
@ -217,6 +219,18 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage)
if (type == AST_MODULE)
current_scope.clear();
// resolve constant prefixes
if (type == AST_PREFIX) {
if (children[0]->type != AST_CONSTANT) {
dumpAst(NULL, "> ", NULL);
log_error("Index in generate block prefix syntax at %s:%d is not constant!\n", filename.c_str(), linenum);
}
assert(children[1]->type == AST_IDENTIFIER);
newNode = children[1]->clone();
newNode->str = stringf("%s[%d].%s", str.c_str(), children[0]->integer, children[1]->str.c_str());
goto apply_newNode;
}
// annotate constant ranges
if (type == AST_RANGE) {
bool old_range_valid = range_valid;