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| author | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2018-08-03 01:51:42 +0000 |
|---|---|---|
| committer | Siddhesh Poyarekar <siddhesh@gcc.gnu.org> | 2018-08-03 01:51:42 +0000 |
| commit | 561d011953965a425463900548c29187c2898179 (patch) | |
| tree | c12a319bd1393dcd45fb07c736b6ba9f1da656ea /gcc | |
| parent | 90d981fb124adf29d3e0da41ea7954058c0c8601 (diff) | |
| download | gcc-561d011953965a425463900548c29187c2898179.zip gcc-561d011953965a425463900548c29187c2898179.tar.gz gcc-561d011953965a425463900548c29187c2898179.tar.bz2 | |
[aarch64] Fix falkor pipeline description for dup<q>
There was a typo in the pipeline description where DUP was assigned to
the vector pipes for quad mode ops when it really only uses the VTOG
pipes. Fixing this does not show any noticeable difference in
performance (there's a very small bump of 1.7% in x264 but that's
about it) in my tests but is the more precise description of operations
for falkor.
* config/aarch64/falkor.md (falkor_am_1_vxvy_vxvy): Move
neon_dup_q to...
(falkor_am_1_gtov_gtov): ... a new insn reservation.
From-SVN: r263285
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/aarch64/falkor.md | 8 |
2 files changed, 13 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 80685cd..77d110d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2018-08-03 Siddhesh Poyarekar <siddhesh@sourceware.org> + + * config/aarch64/falkor.md (falkor_am_1_vxvy_vxvy): Move + neon_dup_q to... + (falkor_am_1_gtov_gtov): ... a new insn reservation. + 2018-07-19 Ilya Leoshkevich <iii@linux.ibm.com> * config/nds32/nds32.c (nds32_hard_regno_mode_ok): Replace > with >=. diff --git a/gcc/config/aarch64/falkor.md b/gcc/config/aarch64/falkor.md index 5cbc515..45cbff9 100644 --- a/gcc/config/aarch64/falkor.md +++ b/gcc/config/aarch64/falkor.md @@ -322,6 +322,12 @@ (eq_attr "type" "neon_from_gp_q")) "falkor_gtov,falkor_gtov") +;; DUP does not use vector pipes in Q mode, only gtov+gtov. +(define_insn_reservation "falkor_am_1_gtov_gtov" 1 + (and (eq_attr "tune" "falkor") + (eq_attr "type" "neon_dup_q")) + "falkor_gtov*2") + ;; neon_to_gp_q is used for 32-bit ARM instructions that move 64-bits of data ;; so no use needed here. @@ -337,7 +343,7 @@ (define_insn_reservation "falkor_am_1_vxvy_vxvy" 1 (and (eq_attr "tune" "falkor") - (eq_attr "type" "neon_bsl_q,neon_dup_q,neon_ext_q,neon_move_q,neon_rev_q,neon_tbl1_q,neon_permute_q")) + (eq_attr "type" "neon_bsl_q,neon_ext_q,neon_move_q,neon_rev_q,neon_tbl1_q,neon_permute_q")) "falkor_vxvy+falkor_vxvy") (define_insn_reservation "falkor_am_2_vxvy" 2 |