Hi all,
just a small patch removing a piece of unreachable code in
'vect_estimate_min_profitable_iters' given the condition
(LOOP_VINFO_USING_PARTIAL_VECTORS_P (loop_vinfo)) is always true as
checked just above.
Bootstrapped on aarch64-unknown-linux-gnu.
Okay for trunk?
Andrea
>From 6bd96581410d9847ab78e6761178d4efbc9a5af2 Mon Sep 17 00:00:00 2001
From: Andrea Corallo <andrea.cora...@arm.com>
Date: Fri, 4 Sep 2020 09:56:59 +0100
Subject: [PATCH] vec: dead code removal in tree-vect-loop.c
gcc/ChangeLog
2020-09-04 Andrea Corallo <andrea.cora...@arm.com>
* tree-vect-loop.c (vect_estimate_min_profitable_iters): Remove
dead code as LOOP_VINFO_USING_PARTIAL_VECTORS_P (loop_vinfo) is
always verified.
---
gcc/tree-vect-loop.c | 15 ++++-----------
1 file changed, 4 insertions(+), 11 deletions(-)
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c
index 362cdc4f1cb..38576382fe7 100644
--- a/gcc/tree-vect-loop.c
+++ b/gcc/tree-vect-loop.c
@@ -4101,17 +4101,10 @@ vect_estimate_min_profitable_iters (loop_vec_info
loop_vinfo,
if (outside_overhead > 0)
min_vec_niters = outside_overhead / saving_per_viter + 1;
- if (LOOP_VINFO_USING_PARTIAL_VECTORS_P (loop_vinfo))
- {
- int threshold = (vec_inside_cost * min_vec_niters
- + vec_outside_cost
- + scalar_outside_cost);
- min_profitable_estimate = threshold / scalar_single_iter_cost + 1;
- }
- else
- min_profitable_estimate = (min_vec_niters * assumed_vf
- + peel_iters_prologue
- + peel_iters_epilogue);
+ int threshold = (vec_inside_cost * min_vec_niters
+ + vec_outside_cost
+ + scalar_outside_cost);
+ min_profitable_estimate = threshold / scalar_single_iter_cost + 1;
}
else
{
--
2.17.1
