Hi Sun, Could you please review the code for WHIRL SSA updater? WHIRL SSA updater is designed to update the SSA info incrementally. The updater works with the WHIRL CFG. Currently, the updater supports creating new ssa information for WNs operating on PREGs and renaming the existing SSA version for both VAR(STID/LDID) and indirect memory operations(ILOAD/ISTORE).
Thank you very much. -- Regards, Lai Jian-Xin
/*
Copyright (C) 2010, Hewlett-Packard Development Company, L.P. All Rights Reserved.
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*/
//====================================================================
//
// Module: wssa_update.h
//
// Revision history:
// Dec-6 - Original Version
//
// Description:
// Interface for WHIRL SSA UPDATER
//
// Exported classes:
// WSSA::WSSA_UPDATER
//
// SEE ALSO:
// be/com/wssa_mgr.h (WHIRL_SSA_MANAGER)
// be/com/wn_cfg.h (WHIRL CFG)
//
//====================================================================
#ifndef wssa_update_INCLUDED
#define wssa_update_INCLUDED
#include "defs.h"
#include "wssa_defs.h"
#include "wn_cfg.h"
#include "wssa_mgr.h"
#include "wssa_du.h"
#include <ext/hash_map>
using __gnu_cxx::hash_map;
namespace WSSA {
typedef hash_map<INT32 /* WST_IDX */,
pair<WN* /* def WN */, VER_IDX /* def VER */> > WST_DEF_MAP;
//===================================================================
// WSSA_UPDATER
// interface to update WHIRL SSA
//===================================================================
class WSSA_UPDATER {
public:
typedef CFG_UTIL::WN_CFG::BB_NODE BB_NODE;
private:
BOOL _trace;
WN* _root;
CFG_UTIL::WN_CFG* _cfg;
WHIRL_SSA_MANAGER* _ssa;
WSSA_DU_MANAGER* _du;
public:
WSSA_UPDATER(WN* root, CFG_UTIL::WN_CFG* cfg,
WHIRL_SSA_MANAGER* ssa, BOOL trace = FALSE)
: _root(root), _ssa(ssa), _cfg(cfg), _trace(trace) {
_du = NULL; // TODO: update DU
}
public:
// adjust phi operands order according to CFG
// only needed for WOPT emitter since the CFG and SSA are built separately
void Adjust_phi_opnds();
private:
// internal methods to update SSA
// rename the WHIRL by the def info
void ssa_rename_rhs(WN* rhs, WST_DEF_MAP& def);
void ssa_rename_stmt(WN* stmt, WST_DEF_MAP& def);
void ssa_rename_last_def(BB_NODE* bb, WST_DEF_MAP& def);
// rename the WHIRL by the old and new version info
BOOL ssa_rename_tree(WN* wn, VER_IDX old_ver, VER_IDX new_ver);
void ssa_rename_bb(BB_NODE* bb, VER_IDX old_ver, VER_IDX new_ver);
void ssa_rename_wst(BB_NODE* bb, VER_IDX old_ver, VER_IDX new_ver);
void ssa_add_stmt(WN* stmt);
void ssa_remove_stmt(WN* stmt);
// internal methods to update DU
void du_add_stmt(WN* stmt);
void du_remove_stmt(WN* stmt);
// internal methods to update CFG
BOOL op_change_cfg(OPERATOR opr);
BB_NODE* cfg_find_succ(WN* stmt);
void cfg_insert_before(WN* before, WN* stmt);
void cfg_insert_after(WN* after, WN* stmt);
void cfg_remove_stmt(WN* stmt);
public:
// copy tree and ssa information
WN* Copy_tree(WN* tree);
WN* Copy_tree_with_map(WN* tree);
// insert statement and update whirl, cfg and ssa
void Insert_before(WN* block, WN* before, WN* stmt);
void Insert_after(WN* block, WN* after, WN* stmt);
// extract statement(s) from block, update whirl, cfg and ssa
WN* Extract_stmt(WN* block, WN* stmt);
WN* Extract_list(WN* block, WN* first, WN* last);
// delete statement(s) from block, update whirl, cfg and ssa
void Delete_stmt(WN* block, WN* stmt);
void Delete_list(WN* block, WN* first, WN* last);
public:
// rename inside bb and keep the versions of live out the same
void Rename_BB(BB_NODE* bb);
};
}; /* namespace WSSA */
#endif /* wssa_update_INCLUDED */
wssa_update.cxx
Description: Binary data
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