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| author | Richard Biener <rguenther@suse.de> | 2020-11-02 12:38:04 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2020-11-02 15:58:14 +0100 |
| commit | e881774d0dda6d5127eb8f0642f6edc16dc0b1e7 (patch) | |
| tree | 246429551c79f231c1b41f6cf035e478fdc00452 /libcpp/init.c | |
| parent | 86deadf8d3ac55b3cd07e15d4e83e3b6ccd9ee81 (diff) | |
| download | gcc-e881774d0dda6d5127eb8f0642f6edc16dc0b1e7.zip gcc-e881774d0dda6d5127eb8f0642f6edc16dc0b1e7.tar.gz gcc-e881774d0dda6d5127eb8f0642f6edc16dc0b1e7.tar.bz2 | |
Rewrite SLP induction vectorization
This rewrites SLP induction vectorization to handle different
inductions in the different SLP lanes. It also changes SLP
build to represent the initial value (but not the cycle) so
it can be enhanced to handle outer loop vectorization later.
Note this FAILs gcc.dg/vect/costmodel/x86_64/costmodel-pr30843.c
because it removes one CSE optimization that no longer works
with non-uniform initial value and step. I'll see to recover
from this after outer loop vectorization of inductions works.
It might be a bit friendlier to variable-size vectors now
but then we're now building the step vector from scalars ...
2020-11-02 Richard Biener <rguenther@suse.de>
* tree.h (build_real_from_wide): Declare.
* tree.c (build_real_from_wide): New function.
* tree-vect-slp.c (vect_build_slp_tree_2): Remove
restriction on induction vectorization, represent
the initial value.
* tree-vect-loop.c (vect_model_induction_cost): Inline ...
(vectorizable_induction): ... here. Rewrite SLP
code generation.
* gcc.dg/vect/slp-49.c: New testcase.
Diffstat (limited to 'libcpp/init.c')
0 files changed, 0 insertions, 0 deletions