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From f17e836ef9b1bbc6056790596420b699e48128c2 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Thu, 2 Dec 2021 19:57:42 -0800
Subject: [PATCH] util/format: Check for NEON before using it

This fixes build on rpi0-w and any other machine which does not have
neon unit and is not used as FPU unit

Fixes errors e.g.

In file included from ../mesa-21.3.0/src/util/format/u_format_unpack_neon.c:35:
/mnt/b/yoe/master/build/tmp/work/arm1176jzfshf-vfp-yoe-linux-gnueabi/mesa/2_21.3.0-r0/recipe-sysroot-native/usr/lib/clang/13.0.1/include/arm_neon.h:32:2: error: "NEON support not enabled"

Upstream-Status: Submitted [https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14032]
Signed-off-by: Khem Raj <raj.khem@gmail.com>

---
 src/util/format/u_format.c             | 2 +-
 src/util/format/u_format_unpack_neon.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/util/format/u_format.c b/src/util/format/u_format.c
index c071250..0880984 100644
--- a/src/util/format/u_format.c
+++ b/src/util/format/u_format.c
@@ -1184,7 +1184,7 @@ static void
 util_format_unpack_table_init(void)
 {
    for (enum pipe_format format = PIPE_FORMAT_NONE; format < PIPE_FORMAT_COUNT; format++) {
-#if (defined(PIPE_ARCH_AARCH64) || defined(PIPE_ARCH_ARM)) && !defined(NO_FORMAT_ASM) && !defined(__SOFTFP__)
+#if (defined(PIPE_ARCH_AARCH64) || (defined(__ARM_NEON) && defined(PIPE_ARCH_ARM))) && !defined(NO_FORMAT_ASM)
       const struct util_format_unpack_description *unpack = util_format_unpack_description_neon(format);
       if (unpack) {
          util_format_unpack_table[format] = unpack;
diff --git a/src/util/format/u_format_unpack_neon.c b/src/util/format/u_format_unpack_neon.c
index a4a5cb1..1e4f794 100644
--- a/src/util/format/u_format_unpack_neon.c
+++ b/src/util/format/u_format_unpack_neon.c
@@ -23,7 +23,7 @@

 #include <u_format.h>

-#if (defined(PIPE_ARCH_AARCH64) || defined(PIPE_ARCH_ARM)) && !defined(NO_FORMAT_ASM) && !defined(__SOFTFP__)
+#if (defined(PIPE_ARCH_AARCH64) || (defined(__ARM_NEON) && defined(PIPE_ARCH_ARM))) && !defined(NO_FORMAT_ASM)

 /* armhf builds default to vfp, not neon, and refuses to compile neon intrinsics
  * unless you tell it "no really".