package/snappy/0001-Fix-compilation-error-raised-by-vqtbl1q_u8-instructi.patch

From 284d5a6f267d4962b2b88540f218c10740a6c053 Mon Sep 17 00:00:00 2001
From: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Date: Sat, 8 Jun 2024 18:42:16 +0200
Subject: [PATCH] Fix compilation error raised by vqtbl1q_u8 instruction
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The compilation in Buildroot for the raspberrypi3_qt5we_defconfig
configuration:

make raspberrypi3_qt5we_defconfig
make

raises the following error:

In file included from buildroot/output/build/snappy-1.2.1/snappy.cc:29:
buildroot/output/build/snappy-1.2.1/snappy-internal.h: In function ‘snappy::internal::V128 snappy::internal::V128_Shuffle(V128, V128)’:
buildroot/output/build/snappy-1.2.1/snappy-internal.h:109:10: error: ‘vqtbl1q_u8’ was not declared in this scope; did you mean ‘vtbl1_u8’?
  109 |   return vqtbl1q_u8(input, shuffle_mask);
      |          ^~~~~~~~~~
      |          vtbl1_u8
make[4]: *** [CMakeFiles/snappy.dir/build.make:118: CMakeFiles/snappy.dir/snappy.cc.o] Error 1

As reported by [1], the vqtbl1q_u8 instruction is supported by A64
architectures. For this reason, the patch enables the use of the
instruction only for NEON of such architecture.

[1] https://developer.arm.com/architectures/instruction-sets/intrinsics/vqtbl1q_u8

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Upstream: https://github.com/google/snappy/pull/185
---
 snappy-internal.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/snappy-internal.h b/snappy-internal.h
index ae78247dbbc9..256d32344d1a 100644
--- a/snappy-internal.h
+++ b/snappy-internal.h
@@ -46,7 +46,7 @@
 #include <arm_neon.h>
 #endif
 
-#if SNAPPY_HAVE_SSSE3 || SNAPPY_HAVE_NEON
+#if SNAPPY_HAVE_SSSE3 || (SNAPPY_HAVE_NEON && defined(__aarch64__))
 #define SNAPPY_HAVE_VECTOR_BYTE_SHUFFLE 1
 #else
 #define SNAPPY_HAVE_VECTOR_BYTE_SHUFFLE 0
-- 
2.43.0