diff options
Diffstat (limited to 'gcc/tree-predcom.c')
| -rw-r--r-- | gcc/tree-predcom.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/gcc/tree-predcom.c b/gcc/tree-predcom.c index ac32c84..8dac1ba 100644 --- a/gcc/tree-predcom.c +++ b/gcc/tree-predcom.c @@ -1745,9 +1745,8 @@ execute_pred_commoning_chain (struct loop *loop, chain_p chain, if (chain->combined) { /* For combined chains, just remove the statements that are used to - compute the values of the expression (except for the root one). */ - for (i = 1; chain->refs.iterate (i, &a); i++) - remove_stmt (a->stmt); + compute the values of the expression (except for the root one). + We delay this until after all chains are processed. */ } else { @@ -1811,6 +1810,21 @@ execute_pred_commoning (struct loop *loop, vec<chain_p> chains, execute_pred_commoning_chain (loop, chain, tmp_vars); } + FOR_EACH_VEC_ELT (chains, i, chain) + { + if (chain->type == CT_INVARIANT) + ; + else if (chain->combined) + { + /* For combined chains, just remove the statements that are used to + compute the values of the expression (except for the root one). */ + dref a; + unsigned j; + for (j = 1; chain->refs.iterate (j, &a); j++) + remove_stmt (a->stmt); + } + } + update_ssa (TODO_update_ssa_only_virtuals); } |