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nerves_system_br

1.23.1
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Nerves System BR - Buildroot based build platform for Nerves Systems

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nerves_system_br patches buildroot 0010-riscv-add-support-for-vector-instructions.patch
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patches/buildroot/0010-riscv-add-support-for-vector-instructions.patch

From 78538a953e00ec2dda5ca38f578cdc20688e2676 Mon Sep 17 00:00:00 2001
From: Frank Hunleth <fhunleth@troodon-software.com>
Date: Sat, 25 Jun 2022 12:37:27 -0400
Subject: [PATCH] riscv: add support for vector instructions
---
arch/Config.in.riscv | 7 +++++++
arch/arch.mk.riscv | 3 +++
2 files changed, 10 insertions(+)
diff --git a/arch/Config.in.riscv b/arch/Config.in.riscv
index b5e84389e0..2e9576e112 100644
--- a/arch/Config.in.riscv
+++ b/arch/Config.in.riscv
@@ -18,6 +18,9 @@ config BR2_RISCV_ISA_RVD
config BR2_RISCV_ISA_RVC
bool
+config BR2_RISCV_ISA_RVV
+ bool
+
choice
prompt "Target Architecture Variant"
default BR2_riscv_g
@@ -63,6 +66,10 @@ config BR2_RISCV_ISA_CUSTOM_RVD
config BR2_RISCV_ISA_CUSTOM_RVC
bool "Compressed Instructions (C)"
select BR2_RISCV_ISA_RVC
+
+config BR2_RISCV_ISA_CUSTOM_RVV
+ bool "Vector Instructions (V)"
+ select BR2_RISCV_ISA_RVV
endif
choice
diff --git a/arch/arch.mk.riscv b/arch/arch.mk.riscv
index 8d2236147c..ee5c434b97 100644
--- a/arch/arch.mk.riscv
+++ b/arch/arch.mk.riscv
@@ -26,6 +26,9 @@ endif
ifeq ($(BR2_RISCV_ISA_RVC),y)
GCC_TARGET_ARCH := $(GCC_TARGET_ARCH)c
endif
+ifeq ($(BR2_RISCV_ISA_RVV),y)
+GCC_TARGET_ARCH := $(GCC_TARGET_ARCH)v
+endif
# Starting from gcc 12.x, csr and fence instructions have been
# separated from the base I instruction set, and special -march
--
2.34.1