[PATCH][GCC 8] aarch64: Add support for Neoverse V1 CPU

[Alex Coplan]

This patch backports the AArch64 support for Arm's Neoverse V1 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 V1.
	* config/aarch64/aarch64-tune.md: Regenerate.
	* doc/invoke.texi: Document support for Neoverse V1.
-------------- next part --------------
diff --git a/gcc/config/aarch64/aarch64-cores.def b/gcc/config/aarch64/aarch64-cores.def
index eb01390c262..35ce68ad077 100644
--- a/gcc/config/aarch64/aarch64-cores.def
+++ b/gcc/config/aarch64/aarch64-cores.def
@@ -98,6 +98,7 @@ AARCH64_CORE("saphira",     saphira,    falkor,    8_3A,  AARCH64_FL_FOR_ARCH8_3
 
 /* ARM ('A') cores. */
 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-A big.LITTLE implementations.  */
 
diff --git a/gcc/config/aarch64/aarch64-tune.md b/gcc/config/aarch64/aarch64-tune.md
index c2de5e873a7..e8894ee4a9d 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,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,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 47126319e72..a46a9cb31f7 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -14771,8 +14771,8 @@ 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{zeus},
-@samp{exynos-m1}, @samp{falkor}, @samp{qdf24xx}, @samp{saphira},
+@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{thunderxt88}, @samp{thunderxt88p1}, @samp{thunderxt81},
 @samp{thunderxt83}, @samp{thunderx2t99}, @samp{cortex-a57.cortex-a53},