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| author | Revital Eres <eres@il.ibm.com> | 2007-03-25 06:53:02 +0000 |
|---|---|---|
| committer | Revital Eres <revitale@gcc.gnu.org> | 2007-03-25 06:53:02 +0000 |
| commit | 3ece6cc239ce0f85c306e3a2800582e6d8499b8d (patch) | |
| tree | 66f8652781f8f67bf521e7f0d504d074b32dabc2 /gcc | |
| parent | e65a3857a5b89f314ceeecb2edd4c244bde3872b (diff) | |
| download | gcc-3ece6cc239ce0f85c306e3a2800582e6d8499b8d.zip gcc-3ece6cc239ce0f85c306e3a2800582e6d8499b8d.tar.gz gcc-3ece6cc239ce0f85c306e3a2800582e6d8499b8d.tar.bz2 | |
fix in tree-if-conv.c
From-SVN: r123194
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-if-conv.c | 17 |
2 files changed, 19 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ae81fcd..a8902bf 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2007-03-25 Revital Eres <eres@il.ibm.com> + + * tree-if-conv.c (if_convertible_gimple_modify_stmt_p): + Fold movement_possibility function into it. + 2007-03-25 David Edelsohn <edelsohn@gnu.org> * config/rs6000/darwin.md (load_macho_picbase): Ignore operand 0. diff --git a/gcc/tree-if-conv.c b/gcc/tree-if-conv.c index 7d1a838..709c414 100644 --- a/gcc/tree-if-conv.c +++ b/gcc/tree-if-conv.c @@ -346,17 +346,28 @@ static bool if_convertible_gimple_modify_stmt_p (struct loop *loop, basic_block bb, tree m_expr) { + tree lhs, rhs; + + if (TREE_CODE (m_expr) != GIMPLE_MODIFY_STMT) + return false; + if (dump_file && (dump_flags & TDF_DETAILS)) { fprintf (dump_file, "-------------------------\n"); print_generic_stmt (dump_file, m_expr, TDF_SLIM); } - /* Be conservative and do not handle immovable expressions. */ - if (movement_possibility (m_expr) == MOVE_IMPOSSIBLE) + lhs = GIMPLE_STMT_OPERAND (m_expr, 0); + rhs = GIMPLE_STMT_OPERAND (m_expr, 1); + + /* Some of these constrains might be too conservative. */ + if (stmt_ends_bb_p (m_expr) || stmt_ann (m_expr)->has_volatile_ops + || (TREE_CODE (lhs) == SSA_NAME + && SSA_NAME_OCCURS_IN_ABNORMAL_PHI (lhs)) + || TREE_SIDE_EFFECTS (rhs)) { if (dump_file && (dump_flags & TDF_DETAILS)) - fprintf (dump_file, "stmt is movable. Don't take risk\n"); + fprintf (dump_file, "stmt not suitable for ifcvt\n"); return false; } |