jpeg-turbo: add simd support for powerpc cores with altivec

>From the 1.5-b1 release notes:

Added full SIMD acceleration for PowerPC platforms using AltiVec VMX
(128-bit SIMD) instructions.  Although the performance of libjpeg-turbo on
PowerPC was already good, due to the increased number of registers available
to the compiler vs.  x86, it was still possible to speed up compression by
about 3-4x and decompression by about 2-2.5x (relative to libjpeg v6b)
through the use of AltiVec instructions.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

diff --git a/package/jpeg/Config.in b/package/jpeg/Config.in
index 170e58c5d935210570b1d6800a6d95c3722f8c52..e2a3fd0e3526c706f00f477ff02d111b66bd5629 100644 (file)
--- a/package/jpeg/Config.in
+++ b/package/jpeg/Config.in
@@ -6,7 +6,8 @@ config BR2_PACKAGE_JPEG
 # jpeg-turbo has simd support for some architectures
 config BR2_PACKAGE_JPEG_SIMD_SUPPORT
        bool
-       default y if BR2_X86_CPU_HAS_MMX || BR2_ARM_CPU_HAS_NEON
+       default y if BR2_X86_CPU_HAS_MMX || BR2_ARM_CPU_HAS_NEON || \
+                BR2_POWERPC_CPU_HAS_ALTIVEC
 
 if BR2_PACKAGE_JPEG