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Diffstat (limited to 'gcc/tree-ssa-phiopt.c')
| -rw-r--r-- | gcc/tree-ssa-phiopt.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/gcc/tree-ssa-phiopt.c b/gcc/tree-ssa-phiopt.c index 7a98b7a..c6adbbd 100644 --- a/gcc/tree-ssa-phiopt.c +++ b/gcc/tree-ssa-phiopt.c @@ -1020,7 +1020,16 @@ match_simplify_replacement (basic_block cond_bb, basic_block middle_bb, return false; gsi = gsi_last_bb (cond_bb); - if (stmt_to_move) + /* Insert the sequence generated from gimple_simplify_phiopt. */ + if (seq) + gsi_insert_seq_before (&gsi, seq, GSI_CONTINUE_LINKING); + + /* If there was a statement to move and the result of the statement + is going to be used, move it to right before the original + conditional. */ + if (stmt_to_move + && (gimple_assign_lhs (stmt_to_move) == result + || !has_single_use (gimple_assign_lhs (stmt_to_move)))) { if (dump_file && (dump_flags & TDF_DETAILS)) { @@ -1032,8 +1041,6 @@ match_simplify_replacement (basic_block cond_bb, basic_block middle_bb, gsi_move_before (&gsi1, &gsi); reset_flow_sensitive_info (gimple_assign_lhs (stmt_to_move)); } - if (seq) - gsi_insert_seq_before (&gsi, seq, GSI_SAME_STMT); replace_phi_edge_with_variable (cond_bb, e1, phi, result); |