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Major improvements in mem2reg and added "init" sync rules

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This commit is contained in:
Clifford Wolf 2013-11-21 13:49:00 +01:00
parent 84ced2bb8e
commit 09471846c5
10 changed files with 379 additions and 93 deletions
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21
frontends/ast/ast.h
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@ -162,12 +162,31 @@ namespace AST
void delete_children();
~AstNode();
enum mem2reg_flags
{
/* status flags */
MEM2REG_FL_ALL = 0x00000001,
MEM2REG_FL_ASYNC = 0x00000002,
MEM2REG_FL_INIT = 0x00000004,
/* candidate flags */
MEM2REG_FL_FORCED = 0x00000100,
MEM2REG_FL_SET_INIT = 0x00000200,
MEM2REG_FL_SET_ELSE = 0x00000400,
MEM2REG_FL_SET_ASYNC = 0x00000800,
MEM2REG_FL_EQ2 = 0x00001000,
/* proc flags */
MEM2REG_FL_EQ1 = 0x01000000,
};
// simplify() creates a simpler AST by unrolling for-loops, expanding generate blocks, etc.
// it also sets the id2ast pointers so that identifier lookups are fast in genRTLIL()
bool simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage, int width_hint, bool sign_hint);
void expand_genblock(std::string index_var, std::string prefix, std::map<std::string, std::string> &name_map);
void replace_ids(std::map<std::string, std::string> &rules);
void mem2reg_as_needed_pass1(std::set<AstNode*> &mem2reg_set, std::set<AstNode*> &mem2reg_candidates, bool sync_proc, bool async_proc, bool force_mem2reg);
void mem2reg_as_needed_pass1(std::map<AstNode*, std::set<std::string>> &mem2reg_places,
std::map<AstNode*, uint32_t> &mem2reg_flags, std::map<AstNode*, uint32_t> &proc_flags, uint32_t &status_flags);
void mem2reg_as_needed_pass2(std::set<AstNode*> &mem2reg_set, AstNode *mod, AstNode *block);
void meminfo(int &mem_width, int &mem_size, int &addr_bits);