AArch64: Add Neoverse N2 tuning model

This is the GCC 10 version of the Neoverse N2 tuning struct patch.
It's more or less identical.

Bootstrapped and tested on the branch.

gcc/
	* config/aarch64/aarch64.c (neoversen2_tunings): Define.
	* config/aarch64/aarch64-cores.def (neoverse-n2): Use it.

diff --git a/gcc/config/aarch64/aarch64-cores.def b/gcc/config/aarch64/aarch64-cores.def
index ac528285adb1176fefda4a48779959e429a07e09..9c290292479bf7b2b58429c9e2b806c8af84c296 100644 (file)
--- a/gcc/config/aarch64/aarch64-cores.def
+++ b/gcc/config/aarch64/aarch64-cores.def
@@ -140,7 +140,7 @@ AARCH64_CORE("neoverse-v1", neoversev1, cortexa57, 8_4A,  AARCH64_FL_FOR_ARCH8_4
 AARCH64_CORE("saphira",     saphira,    saphira,    8_4A,  AARCH64_FL_FOR_ARCH8_4 | AARCH64_FL_CRYPTO | AARCH64_FL_RCPC, saphira,   0x51, 0xC01, -1)
 
 /* Armv8.5-A Architecture Processors.  */
-AARCH64_CORE("neoverse-n2", neoversen2, cortexa57, 8_5A, AARCH64_FL_FOR_ARCH8_5 | AARCH64_FL_I8MM | AARCH64_FL_BF16 | AARCH64_FL_F16 | AARCH64_FL_SVE | AARCH64_FL_SVE2 | AARCH64_FL_SVE2_BITPERM | AARCH64_FL_RNG | AARCH64_FL_MEMTAG, neoversen1, 0x41, 0xd49, -1)
+AARCH64_CORE("neoverse-n2", neoversen2, cortexa57, 8_5A, AARCH64_FL_FOR_ARCH8_5 | AARCH64_FL_I8MM | AARCH64_FL_BF16 | AARCH64_FL_F16 | AARCH64_FL_SVE | AARCH64_FL_SVE2 | AARCH64_FL_SVE2_BITPERM | AARCH64_FL_RNG | AARCH64_FL_MEMTAG, neoversen2, 0x41, 0xd49, -1)
 
 /* ARMv8-A big.LITTLE implementations.  */
 

diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index fdfe00026f7339205e934bbf162ecb74e17982f3..df973165165e46c83657cae26148e53ee1e76fba 100644 (file)
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -1362,6 +1362,32 @@ static const struct tune_params neoversev1_tunings =
   &generic_prefetch_tune
 };
 
+static const struct tune_params neoversen2_tunings =
+{
+  &cortexa57_extra_costs,
+  &generic_addrcost_table,
+  &generic_regmove_cost,
+  &cortexa57_vector_cost,
+  &generic_branch_cost,
+  &generic_approx_modes,
+  SVE_128, /* sve_width  */
+  4, /* memmov_cost  */
+  3, /* issue_rate  */
+  (AARCH64_FUSE_AES_AESMC | AARCH64_FUSE_CMP_BRANCH), /* fusible_ops  */
+  "32:16",     /* function_align.  */
+  "4",         /* jump_align.  */
+  "32:16",     /* loop_align.  */
+  2,   /* int_reassoc_width.  */
+  4,   /* fp_reassoc_width.  */
+  2,   /* vec_reassoc_width.  */
+  2,   /* min_div_recip_mul_sf.  */
+  2,   /* min_div_recip_mul_df.  */
+  0,   /* max_case_values.  */
+  tune_params::AUTOPREFETCHER_WEAK,    /* autoprefetcher_model.  */
+  (AARCH64_EXTRA_TUNE_NONE),   /* tune_flags.  */
+  &generic_prefetch_tune
+};
+
 static const struct tune_params a64fx_tunings =
 {
   &generic_extra_costs,