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| author | Andreas Krebbel <krebbel@linux.vnet.ibm.com> | 2016-12-02 08:25:27 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2016-12-02 08:25:27 +0000 |
| commit | 7f5fc63362a675a216f1475bb08fd42d8274f8cf (patch) | |
| tree | 0622db93e3d416b514fe9512047a44cc2859f782 /gcc/config/s390 | |
| parent | 9ad49cdb5340bcaab0ecc0574ed754af9ba71283 (diff) | |
| download | gcc-7f5fc63362a675a216f1475bb08fd42d8274f8cf.zip gcc-7f5fc63362a675a216f1475bb08fd42d8274f8cf.tar.gz gcc-7f5fc63362a675a216f1475bb08fd42d8274f8cf.tar.bz2 | |
S/390: Define vectorization_cost hook
Define the vectorization_cost hook. The only change right now
compared to the default implementation is the reduced costs for
unaligned loads/stores. This is supposed to prevent unnecessary loop
peeling performed to reach better alignments.
Further tuning of this hook is required.
-Andreas-
gcc/ChangeLog:
2016-12-02 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* gcc/config/s390/s390.c (s390_builtin_vectorization_cost): New
function.
(TARGET_VECTORIZE_BUILTIN_VECTORIZATION_COST): Define target
macro.
gcc/testsuite/ChangeLog:
2016-12-02 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* gcc.target/s390/vector/vec-nopeel-1.c: New test.
From-SVN: r243158
Diffstat (limited to 'gcc/config/s390')
| -rw-r--r-- | gcc/config/s390/s390.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/gcc/config/s390/s390.c b/gcc/config/s390/s390.c index dab4f43..767666e 100644 --- a/gcc/config/s390/s390.c +++ b/gcc/config/s390/s390.c @@ -3674,6 +3674,40 @@ s390_address_cost (rtx addr, machine_mode mode ATTRIBUTE_UNUSED, return ad.indx? COSTS_N_INSNS (1) + 1 : COSTS_N_INSNS (1); } +/* Implement targetm.vectorize.builtin_vectorization_cost. */ +static int +s390_builtin_vectorization_cost (enum vect_cost_for_stmt type_of_cost, + tree vectype, + int misalign ATTRIBUTE_UNUSED) +{ + switch (type_of_cost) + { + case scalar_stmt: + case scalar_load: + case scalar_store: + case vector_stmt: + case vector_load: + case vector_store: + case vec_to_scalar: + case scalar_to_vec: + case cond_branch_not_taken: + case vec_perm: + case vec_promote_demote: + case unaligned_load: + case unaligned_store: + return 1; + + case cond_branch_taken: + return 3; + + case vec_construct: + return TYPE_VECTOR_SUBPARTS (vectype) - 1; + + default: + gcc_unreachable (); + } +} + /* If OP is a SYMBOL_REF of a thread-local symbol, return its TLS mode, otherwise return 0. */ @@ -15428,6 +15462,9 @@ s390_excess_precision (enum excess_precision_type type) #define TARGET_REGISTER_MOVE_COST s390_register_move_cost #undef TARGET_MEMORY_MOVE_COST #define TARGET_MEMORY_MOVE_COST s390_memory_move_cost +#undef TARGET_VECTORIZE_BUILTIN_VECTORIZATION_COST +#define TARGET_VECTORIZE_BUILTIN_VECTORIZATION_COST \ + s390_builtin_vectorization_cost #undef TARGET_MACHINE_DEPENDENT_REORG #define TARGET_MACHINE_DEPENDENT_REORG s390_reorg |