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Fixed handling of parameters and const functions in casex/casez pattern

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This commit is contained in:
Clifford Wolf 2016-04-21 15:31:54 +02:00
parent f38ca3e18f
commit 5a09fa4553
5 changed files with 37 additions and 8 deletions
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18
frontends/ast/simplify.cc
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@ -540,6 +540,18 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage,
}
}
if (type == AST_CONDX && children.size() > 0 && children.at(0)->type == AST_CONSTANT) {
for (auto &bit : children.at(0)->bits)
if (bit == State::Sz || bit == State::Sx)
bit = State::Sa;
}
if (type == AST_CONDZ && children.size() > 0 && children.at(0)->type == AST_CONSTANT) {
for (auto &bit : children.at(0)->bits)
if (bit == State::Sz)
bit = State::Sa;
}
if (const_fold && type == AST_CASE)
{
while (children[0]->simplify(const_fold, at_zero, in_lvalue, stage, width_hint, sign_hint, in_param)) { }
@ -548,7 +560,7 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage,
new_children.push_back(children[0]);
for (int i = 1; i < GetSize(children); i++) {
AstNode *child = children[i];
log_assert(child->type == AST_COND);
log_assert(child->type == AST_COND || child->type == AST_CONDX || child->type == AST_CONDZ);
for (auto v : child->children) {
if (v->type == AST_DEFAULT)
goto keep_const_cond;
@ -1125,7 +1137,7 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage,
AstNode *selected_case = NULL;
for (size_t i = 1; i < children.size(); i++)
{
log_assert(children.at(i)->type == AST_COND);
log_assert(children.at(i)->type == AST_COND || children.at(i)->type == AST_CONDX || children.at(i)->type == AST_CONDZ);
AstNode *this_genblock = NULL;
for (auto child : children.at(i)->children) {
@ -2984,7 +2996,7 @@ AstNode *AstNode::eval_const_function(AstNode *fcall)
for (size_t i = 1; i < stmt->children.size(); i++)
{
bool found_match = false;
log_assert(stmt->children.at(i)->type == AST_COND);
log_assert(stmt->children.at(i)->type == AST_COND || stmt->children.at(i)->type == AST_CONDX || stmt->children.at(i)->type == AST_CONDZ);
if (stmt->children.at(i)->children.front()->type == AST_DEFAULT) {
sel_case = stmt->children.at(i)->children.back();