This patch backports the AArch64 support for Arm's Neoverse N2 CPU to
GCC 8.
Testing:
* Bootstrapped and regtested on aarch64-none-linux-gnu.
OK for GCC 8 branch?
Thanks,
Alex
---
gcc/ChangeLog:
* config/aarch64/aarch64-cores.def: Add Neoverse N2.
* config/aarch64/aarch64-tune.md: Regenerate.
* doc/invoke.texi: Document AArch64 support for Neoverse N2.
diff --git a/gcc/config/aarch64/aarch64-cores.def
b/gcc/config/aarch64/aarch64-cores.def
index 35ce68ad077..c6c1e3739de 100644
--- a/gcc/config/aarch64/aarch64-cores.def
+++ b/gcc/config/aarch64/aarch64-cores.def
@@ -100,6 +100,9 @@ AARCH64_CORE("saphira", saphira, falkor, 8_3A,
AARCH64_FL_FOR_ARCH8_3
AARCH64_CORE("zeus", zeus, cortexa57, 8_4A, AARCH64_FL_FOR_ARCH8_4 |
AARCH64_FL_F16 | AARCH64_FL_RCPC | AARCH64_FL_SVE, cortexa72, 0x41, 0xd40, -1)
AARCH64_CORE("neoverse-v1", neoversev1, cortexa57, 8_4A,
AARCH64_FL_FOR_ARCH8_4 | AARCH64_FL_F16 | AARCH64_FL_RCPC | AARCH64_FL_SVE,
cortexa72, 0x41, 0xd40, -1)
+/* Armv8.5-A Architecture Processors. */
+AARCH64_CORE("neoverse-n2", neoversen2, cortexa57, 8_4A,
AARCH64_FL_FOR_ARCH8_4 | AARCH64_FL_F16 | AARCH64_FL_SVE | AARCH64_FL_RNG,
cortexa72, 0x41, 0xd49, -1)
+
/* ARMv8-A big.LITTLE implementations. */
AARCH64_CORE("cortex-a57.cortex-a53", cortexa57cortexa53, cortexa53, 8A,
AARCH64_FL_FOR_ARCH8 | AARCH64_FL_CRC, cortexa57, 0x41, AARCH64_BIG_LITTLE
(0xd07, 0xd03), -1)
diff --git a/gcc/config/aarch64/aarch64-tune.md
b/gcc/config/aarch64/aarch64-tune.md
index e8894ee4a9d..2d7c9aa4740 100644
--- a/gcc/config/aarch64/aarch64-tune.md
+++ b/gcc/config/aarch64/aarch64-tune.md
@@ -1,5 +1,5 @@
;; -*- buffer-read-only: t -*-
;; Generated automatically by gentune.sh from aarch64-cores.def
(define_attr "tune"
-
"cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunderx,thunderxt88p1,thunderxt88,thunderxt81,thunderxt83,xgene1,falkor,qdf24xx,exynosm1,thunderx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,ares,neoversen1,saphira,zeus,neoversev1,cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cortexa75cortexa55"
+
"cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunderx,thunderxt88p1,thunderxt88,thunderxt81,thunderxt83,xgene1,falkor,qdf24xx,exynosm1,thunderx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,ares,neoversen1,saphira,zeus,neoversev1,neoversen2,cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cortexa75cortexa55"
(const (symbol_ref "((enum attr_tune) aarch64_tune)")))
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 6b40362e412..b91366daafd 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -14771,9 +14771,9 @@ Specify the name of the target processor for which GCC
should tune the
performance of the code. Permissible values for this option are:
@samp{generic}, @samp{cortex-a35}, @samp{cortex-a53}, @samp{cortex-a55},
@samp{cortex-a57}, @samp{cortex-a72}, @samp{cortex-a73}, @samp{cortex-a75},
-@samp{cortex-a76}, @samp{ares}, @samp{neoverse-n1}, @samp{neoverse-v1},
-@samp{zeus}, @samp{exynos-m1}, @samp{falkor}, @samp{qdf24xx}, @samp{saphira},
-@samp{xgene1}, @samp{vulcan}, @samp{thunderx},
+@samp{cortex-a76}, @samp{ares}, @samp{neoverse-n1}, @samp{neoverse-n2},
+@samp{neoverse-v1}, @samp{zeus}, @samp{exynos-m1}, @samp{falkor},
+@samp{qdf24xx}, @samp{saphira}, @samp{xgene1}, @samp{vulcan}, @samp{thunderx},
@samp{thunderxt88}, @samp{thunderxt88p1}, @samp{thunderxt81},
@samp{thunderxt83}, @samp{thunderx2t99}, @samp{cortex-a57.cortex-a53},
@samp{cortex-a72.cortex-a53}, @samp{cortex-a73.cortex-a35},
