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enable NEON intrinsics in aarch64 builds

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avoids functions that use vtbl? as in iOS builds these are marked
unavailable

Change-Id: I17aedc3c7dc8f1d5be0941205de0b22c3772ef1b
This commit is contained in:
James Zern 2014-05-02 20:38:21 -07:00
parent b9d2bb67d6
commit 1ba61b09f9
4 changed files with 22 additions and 10 deletions
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3
src/dsp/dsp.h
View File

@ -44,8 +44,7 @@ extern "C" {
#define WEBP_ANDROID_NEON // Android targets that might support NEON
#endif
#if (defined(__ARM_NEON__) && !defined(__aarch64__)) || \
defined(WEBP_ANDROID_NEON)
#if defined(__ARM_NEON__) || defined(WEBP_ANDROID_NEON)
#define WEBP_USE_NEON
#endif

8
src/dsp/enc_neon.c
View File

@ -967,7 +967,9 @@ static int SSE4x4(const uint8_t* a, const uint8_t* b) {
//------------------------------------------------------------------------------
#if !defined(WORK_AROUND_GCC)
// Compilation with gcc-4.6.x is problematic for now and vtbl? are unavailable
// in iOS/arm64 builds. Disable this function in those cases.
#if !(defined(WORK_AROUND_GCC) || defined(__aarch64__))
static int16x8_t Quantize(int16_t* const in,
const VP8Matrix* const mtx, int offset) {
@ -1025,7 +1027,7 @@ static int QuantizeBlock(int16_t in[16], int16_t out[16],
return 0;
}
#endif // !WORK_AROUND_GCC
#endif // !WORK_AROUND_GCC && !__aarch64__
#endif // WEBP_USE_NEON
@ -1048,7 +1050,7 @@ void VP8EncDspInitNEON(void) {
VP8SSE16x8 = SSE16x8;
VP8SSE8x8 = SSE8x8;
VP8SSE4x4 = SSE4x4;
#if !defined(WORK_AROUND_GCC)
#if !(defined(WORK_AROUND_GCC) || defined(__aarch64__))
VP8EncQuantizeBlock = QuantizeBlock;
#endif
#endif // WEBP_USE_NEON

13
src/dsp/lossless_neon.c
View File

@ -23,7 +23,7 @@
//------------------------------------------------------------------------------
// Colorspace conversion functions
#if LOCAL_GCC_PREREQ(4,8)
#if !defined(WORK_AROUND_GCC)
// gcc 4.6.0 had some trouble (NDK-r9) with this code. We only use it for
// gcc-4.8.x at least.
static void ConvertBGRAToRGBA(const uint32_t* src,
@ -65,7 +65,7 @@ static void ConvertBGRAToRGB(const uint32_t* src,
VP8LConvertBGRAToRGB_C(src, num_pixels & 15, dst); // left-overs
}
#else
#else // WORK_AROUND_GCC
// gcc-4.6.0 fallback
@ -135,7 +135,7 @@ static void ConvertBGRAToRGB(const uint32_t* src,
VP8LConvertBGRAToRGB_C(src, num_pixels & 7, dst); // left-overs
}
#endif // gcc-4.8
#endif // !WORK_AROUND_GCC
//------------------------------------------------------------------------------
@ -263,6 +263,9 @@ static uint32_t Predictor13(uint32_t left, const uint32_t* const top) {
//------------------------------------------------------------------------------
// Subtract-Green Transform
// vtbl? are unavailable in iOS/arm64 builds.
#if !defined(__aarch64__)
// 255 = byte will be zero'd
static const uint8_t kGreenShuffle[8] = { 1, 255, 1, 255, 5, 255, 5, 255 };
@ -294,6 +297,8 @@ static void AddGreenToBlueAndRed(uint32_t* argb_data, int num_pixels) {
VP8LAddGreenToBlueAndRed_C(argb_data, num_pixels & 3);
}
#endif // !__aarch64__
#endif // USE_INTRINSICS
#endif // WEBP_USE_NEON
@ -319,9 +324,11 @@ void VP8LDspInitNEON(void) {
VP8LPredictors[12] = Predictor12;
VP8LPredictors[13] = Predictor13;
#if !defined(__aarch64__)
VP8LSubtractGreenFromBlueAndRed = SubtractGreenFromBlueAndRed;
VP8LAddGreenToBlueAndRed = AddGreenToBlueAndRed;
#endif
#endif
#endif // WEBP_USE_NEON
}

8
src/dsp/neon.h
View File

@ -16,12 +16,16 @@
#include "./dsp.h"
// #define USE_INTRINSICS // use intrinsics when possible
// Right now, some intrinsics functions seem slower, so we disable them
// everywhere except aarch64 where the inline assembly is incompatible.
#if defined(__aarch64__)
#define USE_INTRINSICS // use intrinsics when possible
#endif
// if using intrinsics, this flag avoids some functions that make gcc-4.6.3
// crash ("internal compiler error: in immed_double_const, at emit-rtl.").
// (probably similar to gcc.gnu.org/bugzilla/show_bug.cgi?id=48183)
#if !LOCAL_GCC_PREREQ(4,8)
#if !(LOCAL_GCC_PREREQ(4,8) || defined(__aarch64__))
#define WORK_AROUND_GCC
#endif