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| author | Bin Cheng <bin.cheng@arm.com> | 2016-10-31 09:27:31 +0000 |
|---|---|---|
| committer | Bin Cheng <amker@gcc.gnu.org> | 2016-10-31 09:27:31 +0000 |
| commit | 2c6a05b15083a92a3813783be0e86f0224ec2ba3 (patch) | |
| tree | acaa86f17331a427175b816bc5f885d94970ca0e | |
| parent | 0b56e9adf84be945617a8026a334dd6f14c1c679 (diff) | |
| download | gcc-2c6a05b15083a92a3813783be0e86f0224ec2ba3.zip gcc-2c6a05b15083a92a3813783be0e86f0224ec2ba3.tar.gz gcc-2c6a05b15083a92a3813783be0e86f0224ec2ba3.tar.bz2 | |
tree-vect-data-refs.c (vect_slp_analyze_node_dependences): Skip unnecessary data dependence check after visited store stmt.
* tree-vect-data-refs.c (vect_slp_analyze_node_dependences): Skip
unnecessary data dependence check after visited store stmt.
From-SVN: r241696
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-vect-data-refs.c | 20 |
2 files changed, 15 insertions, 10 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f29b9b5..49698e6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2016-10-31 Bin Cheng <bin.cheng@arm.com> + + * tree-vect-data-refs.c (vect_slp_analyze_node_dependences): Skip + unnecessary data dependence check after visited store stmt. + 2016-10-30 Bill Schmidt <wschmidt@linux.vnet.ibm.com> PR tree-optimization/71915 diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index c99fa406..9346cfe 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -583,6 +583,7 @@ vect_slp_analyze_node_dependences (slp_instance instance, slp_tree node, if (!dr_b) return false; + bool dependent = false; /* If we run into a store of this same instance (we've just marked those) then delay dependence checking until we run into the last store because this is where it will have @@ -599,22 +600,21 @@ vect_slp_analyze_node_dependences (slp_instance instance, slp_tree node, = STMT_VINFO_DATA_REF (vinfo_for_stmt (store)); ddr_p ddr = initialize_data_dependence_relation (dr_a, store_dr, vNULL); - if (vect_slp_analyze_data_ref_dependence (ddr)) - { - free_dependence_relation (ddr); - return false; - } + dependent = vect_slp_analyze_data_ref_dependence (ddr); free_dependence_relation (ddr); + if (dependent) + break; } } - - ddr_p ddr = initialize_data_dependence_relation (dr_a, dr_b, vNULL); - if (vect_slp_analyze_data_ref_dependence (ddr)) + else { + ddr_p ddr = initialize_data_dependence_relation (dr_a, + dr_b, vNULL); + dependent = vect_slp_analyze_data_ref_dependence (ddr); free_dependence_relation (ddr); - return false; } - free_dependence_relation (ddr); + if (dependent) + return false; } } return true; |