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dsp/lossless*: use WEBP_RESTRICT qualifier

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lossless_enc: better vectorization, most benefits seen in AddVector/Eq
              w/ndk r27/gcc-13/clang-16
lossless: minor reordering and some improvement to PredictorAdd5_SSE2
          w/gcc-13

This only affects non-vector pointers; any vector pointers are left as a
follow up.

Change-Id: I2356e314f391ee2f2c71f00bc6ee10097d3881e7
This commit is contained in:
James Zern
2024-08-16 16:51:11 -07:00
parent 04d4b4f387
commit a32b436bd5
14 changed files with 213 additions and 171 deletions
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35
src/dsp/lossless_enc_mips32.c
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@ -149,8 +149,9 @@ static uint32_t ExtraCost_MIPS32(const uint32_t* const population, int length) {
// pY += 2;
// }
// return cost;
static uint32_t ExtraCostCombined_MIPS32(const uint32_t* const X,
const uint32_t* const Y, int length) {
static uint32_t ExtraCostCombined_MIPS32(const uint32_t* WEBP_RESTRICT const X,
const uint32_t* WEBP_RESTRICT const Y,
int length) {
int i, temp0, temp1, temp2, temp3;
const uint32_t* pX = &X[4];
const uint32_t* pY = &Y[4];
@ -215,8 +216,10 @@ static uint32_t ExtraCostCombined_MIPS32(const uint32_t* const X,
// Returns the various RLE counts
static WEBP_INLINE void GetEntropyUnrefinedHelper(
uint32_t val, int i, uint32_t* const val_prev, int* const i_prev,
VP8LBitEntropy* const bit_entropy, VP8LStreaks* const stats) {
uint32_t val, int i, uint32_t* WEBP_RESTRICT const val_prev,
int* WEBP_RESTRICT const i_prev,
VP8LBitEntropy* WEBP_RESTRICT const bit_entropy,
VP8LStreaks* WEBP_RESTRICT const stats) {
int* const pstreaks = &stats->streaks[0][0];
int* const pcnts = &stats->counts[0];
int temp0, temp1, temp2, temp3;
@ -241,9 +244,10 @@ static WEBP_INLINE void GetEntropyUnrefinedHelper(
*i_prev = i;
}
static void GetEntropyUnrefined_MIPS32(const uint32_t X[], int length,
VP8LBitEntropy* const bit_entropy,
VP8LStreaks* const stats) {
static void GetEntropyUnrefined_MIPS32(
const uint32_t X[], int length,
VP8LBitEntropy* WEBP_RESTRICT const bit_entropy,
VP8LStreaks* WEBP_RESTRICT const stats) {
int i;
int i_prev = 0;
uint32_t x_prev = X[0];
@ -262,11 +266,10 @@ static void GetEntropyUnrefined_MIPS32(const uint32_t X[], int length,
bit_entropy->entropy = VP8LFastSLog2(bit_entropy->sum) - bit_entropy->entropy;
}
static void GetCombinedEntropyUnrefined_MIPS32(const uint32_t X[],
const uint32_t Y[],
int length,
VP8LBitEntropy* const entropy,
VP8LStreaks* const stats) {
static void GetCombinedEntropyUnrefined_MIPS32(
const uint32_t X[], const uint32_t Y[], int length,
VP8LBitEntropy* WEBP_RESTRICT const entropy,
VP8LStreaks* WEBP_RESTRICT const stats) {
int i = 1;
int i_prev = 0;
uint32_t xy_prev = X[0] + Y[0];
@ -344,8 +347,9 @@ static void GetCombinedEntropyUnrefined_MIPS32(const uint32_t X[],
ASM_END_COMMON_0 \
ASM_END_COMMON_1
static void AddVector_MIPS32(const uint32_t* pa, const uint32_t* pb,
uint32_t* pout, int size) {
static void AddVector_MIPS32(const uint32_t* WEBP_RESTRICT pa,
const uint32_t* WEBP_RESTRICT pb,
uint32_t* WEBP_RESTRICT pout, int size) {
uint32_t temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
const int end = ((size) / 4) * 4;
const uint32_t* const LoopEnd = pa + end;
@ -356,7 +360,8 @@ static void AddVector_MIPS32(const uint32_t* pa, const uint32_t* pb,
for (i = 0; i < size - end; ++i) pout[i] = pa[i] + pb[i];
}
static void AddVectorEq_MIPS32(const uint32_t* pa, uint32_t* pout, int size) {
static void AddVectorEq_MIPS32(const uint32_t* WEBP_RESTRICT pa,
uint32_t* WEBP_RESTRICT pout, int size) {
uint32_t temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
const int end = ((size) / 4) * 4;
const uint32_t* const LoopEnd = pa + end;