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| author | Richard Sandiford <richard.sandiford@arm.com> | 2021-08-04 16:52:09 +0100 |
|---|---|---|
| committer | Richard Sandiford <richard.sandiford@arm.com> | 2021-08-04 16:52:09 +0100 |
| commit | 5a1017dc305c49c59129d45536630d02dbc01c45 (patch) | |
| tree | bafd9d80404fa85093744e1e3eef10137a575d47 /libgcc | |
| parent | 315a1c3756cbc751c4af0ce0da2157a88d7c3b09 (diff) | |
| download | gcc-5a1017dc305c49c59129d45536630d02dbc01c45.zip gcc-5a1017dc305c49c59129d45536630d02dbc01c45.tar.gz gcc-5a1017dc305c49c59129d45536630d02dbc01c45.tar.bz2 | |
vect: Tweak comparisons with existing epilogue loops
This patch uses a more accurate scalar iteration estimate when
comparing the epilogue of a constant-iteration loop with a candidate
replacement epilogue.
In the testcase, the patch prevents a 1-to-3-element SVE epilogue
from seeming better than a 64-bit Advanced SIMD epilogue.
gcc/
* tree-vect-loop.c (vect_better_loop_vinfo_p): Detect cases in
which old_loop_vinfo is an epilogue loop that handles a constant
number of iterations.
gcc/testsuite/
* gcc.target/aarch64/sve/cost_model_12.c: New test.
Diffstat (limited to 'libgcc')
0 files changed, 0 insertions, 0 deletions