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From e94bf3e1ad12211ec037c9e04a1698e1ed16c87a Mon Sep 17 00:00:00 2001
From: Mingchuan Wu <wumingchuan1992@foxmail.com>
Date: Tue, 3 Dec 2024 21:02:39 +0800
Subject: [PATCH 8/8] [bugfix] Modify the hip09 tune flags.
---
gcc/config/aarch64/aarch64-tuning-flags.def | 3 +++
gcc/config/aarch64/aarch64.cc | 11 +++++++++--
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/gcc/config/aarch64/aarch64-tuning-flags.def b/gcc/config/aarch64/aarch64-tuning-flags.def
index b4a8f99a6..293f6fb7e 100644
--- a/gcc/config/aarch64/aarch64-tuning-flags.def
+++ b/gcc/config/aarch64/aarch64-tuning-flags.def
@@ -49,6 +49,9 @@ AARCH64_EXTRA_TUNING_OPTION ("no_ldp_combine", NO_LDP_COMBINE)
AARCH64_EXTRA_TUNING_OPTION ("rename_load_regs", RENAME_LOAD_REGS)
+/* Prefer Advanced SIMD over SVE for auto-vectorization. */
+AARCH64_EXTRA_TUNING_OPTION ("prefer_advsimd_autovec", PREFER_ADVSIMD_AUTOVEC)
+
AARCH64_EXTRA_TUNING_OPTION ("cse_sve_vl_constants", CSE_SVE_VL_CONSTANTS)
AARCH64_EXTRA_TUNING_OPTION ("use_new_vector_costs", USE_NEW_VECTOR_COSTS)
diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index 1d479f270..829e0da8f 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -1934,8 +1934,7 @@ static const struct tune_params hip09_tunings =
2, /* min_div_recip_mul_df. */
0, /* max_case_values. */
tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */
- (AARCH64_EXTRA_TUNE_USE_NEW_VECTOR_COSTS
- | AARCH64_EXTRA_TUNE_MATCHED_VECTOR_THROUGHPUT), /* tune_flags. */
+ (AARCH64_EXTRA_TUNE_PREFER_ADVSIMD_AUTOVEC), /* tune_flags. */
&hip09_prefetch_tune
};
@@ -20250,6 +20249,14 @@ aarch64_override_options_internal (struct gcc_options *opts)
SET_OPTION_IF_UNSET (opts, &global_options_set,
param_sched_autopref_queue_depth, queue_depth);
+ /* If the core wants only AdvancedSIMD autovectorization, do this through
+ aarch64_autovec_preference. If the user set it explicitly, they should
+ know what they want. */
+ if (aarch64_tune_params.extra_tuning_flags
+ & AARCH64_EXTRA_TUNE_PREFER_ADVSIMD_AUTOVEC)
+ SET_OPTION_IF_UNSET (opts, &global_options_set,
+ aarch64_autovec_preference, 1);
+
/* If using Advanced SIMD only for autovectorization disable SVE vector costs
comparison. */
if (aarch64_autovec_preference == 1)
--
2.33.0
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