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MIPS: dspr2: added optimization for function FTransform

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Change-Id: Ib5850edbc2a586ec9781f494b2337f024e22af78
This commit is contained in:
Djordje Pesut 2014-11-06 14:15:29 +01:00
parent aa42f4231f
commit 54f2c14cce
1 changed files with 99 additions and 0 deletions
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99
src/dsp/enc_mips_dsp_r2.c
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@ -72,6 +72,104 @@ static const int kC2 = 35468;
[temp14]"=&r"(temp14), [temp15]"=&r"(temp15), [temp16]"=&r"(temp16), \ [temp14]"=&r"(temp14), [temp15]"=&r"(temp15), [temp16]"=&r"(temp16), \
[temp17]"=&r"(temp17) [temp17]"=&r"(temp17)
// macro for one horizontal pass in FTransform
// temp0..temp15 holds tmp[0]..tmp[15]
// A - offset in bytes to load from src and ref buffers
// TEMP0..TEMP3 - registers for corresponding tmp elements
#define HORIZONTAL_PASS(A, TEMP0, TEMP1, TEMP2, TEMP3) \
"lw %["#TEMP0"], 0(%[args]) \n\t" \
"lw %["#TEMP1"], 4(%[args]) \n\t" \
"lw %["#TEMP2"], "#A"(%["#TEMP0"]) \n\t" \
"lw %["#TEMP3"], "#A"(%["#TEMP1"]) \n\t" \
"preceu.ph.qbl %["#TEMP0"], %["#TEMP2"] \n\t" \
"preceu.ph.qbl %["#TEMP1"], %["#TEMP3"] \n\t" \
"preceu.ph.qbr %["#TEMP2"], %["#TEMP2"] \n\t" \
"preceu.ph.qbr %["#TEMP3"], %["#TEMP3"] \n\t" \
"subq.ph %["#TEMP0"], %["#TEMP0"], %["#TEMP1"] \n\t" \
"subq.ph %["#TEMP2"], %["#TEMP2"], %["#TEMP3"] \n\t" \
"rotr %["#TEMP0"], %["#TEMP0"], 16 \n\t" \
"addq.ph %["#TEMP1"], %["#TEMP2"], %["#TEMP0"] \n\t" \
"subq.ph %["#TEMP3"], %["#TEMP2"], %["#TEMP0"] \n\t" \
"seh %["#TEMP0"], %["#TEMP1"] \n\t" \
"sra %[temp16], %["#TEMP1"], 16 \n\t" \
"seh %[temp19], %["#TEMP3"] \n\t" \
"sra %["#TEMP3"], %["#TEMP3"], 16 \n\t" \
"subu %["#TEMP2"], %["#TEMP0"], %[temp16] \n\t" \
"addu %["#TEMP0"], %["#TEMP0"], %[temp16] \n\t" \
"mul %[temp17], %[temp19], %[c2217] \n\t" \
"mul %[temp18], %["#TEMP3"], %[c5352] \n\t" \
"mul %["#TEMP1"], %[temp19], %[c5352] \n\t" \
"mul %[temp16], %["#TEMP3"], %[c2217] \n\t" \
"sll %["#TEMP2"], %["#TEMP2"], 3 \n\t" \
"sll %["#TEMP0"], %["#TEMP0"], 3 \n\t" \
"subu %["#TEMP3"], %[temp17], %[temp18] \n\t" \
"addu %["#TEMP1"], %[temp16], %["#TEMP1"] \n\t" \
"addiu %["#TEMP3"], %["#TEMP3"], 937 \n\t" \
"addiu %["#TEMP1"], %["#TEMP1"], 1812 \n\t" \
"sra %["#TEMP3"], %["#TEMP3"], 9 \n\t" \
"sra %["#TEMP1"], %["#TEMP1"], 9 \n\t"
// macro for one vertical pass in FTransform
// temp0..temp15 holds tmp[0]..tmp[15]
// A..D - offsets in bytes to store to out buffer
// TEMP0, TEMP4, TEMP8 and TEMP12 - registers for corresponding tmp elements
#define VERTICAL_PASS(A, B, C, D, TEMP0, TEMP4, TEMP8, TEMP12) \
"addu %[temp16], %["#TEMP0"], %["#TEMP12"] \n\t" \
"subu %[temp19], %["#TEMP0"], %["#TEMP12"] \n\t" \
"addu %[temp17], %["#TEMP4"], %["#TEMP8"] \n\t" \
"subu %[temp18], %["#TEMP4"], %["#TEMP8"] \n\t" \
"mul %["#TEMP8"], %[temp19], %[c2217] \n\t" \
"mul %["#TEMP12"], %[temp18], %[c2217] \n\t" \
"mul %["#TEMP4"], %[temp19], %[c5352] \n\t" \
"mul %[temp18], %[temp18], %[c5352] \n\t" \
"addiu %[temp16], %[temp16], 7 \n\t" \
"addu %["#TEMP0"], %[temp16], %[temp17] \n\t" \
"sra %["#TEMP0"], %["#TEMP0"], 4 \n\t" \
"addu %["#TEMP12"], %["#TEMP12"], %["#TEMP4"] \n\t" \
"subu %["#TEMP4"], %[temp16], %[temp17] \n\t" \
"sra %["#TEMP4"], %["#TEMP4"], 4 \n\t" \
"addiu %["#TEMP8"], %["#TEMP8"], 30000 \n\t" \
"addiu %["#TEMP12"], %["#TEMP12"], 12000 \n\t" \
"addiu %["#TEMP8"], %["#TEMP8"], 21000 \n\t" \
"subu %["#TEMP8"], %["#TEMP8"], %[temp18] \n\t" \
"sra %["#TEMP12"], %["#TEMP12"], 16 \n\t" \
"sra %["#TEMP8"], %["#TEMP8"], 16 \n\t" \
"addiu %[temp16], %["#TEMP12"], 1 \n\t" \
"movn %["#TEMP12"], %[temp16], %[temp19] \n\t" \
"sh %["#TEMP0"], "#A"(%[temp20]) \n\t" \
"sh %["#TEMP4"], "#C"(%[temp20]) \n\t" \
"sh %["#TEMP8"], "#D"(%[temp20]) \n\t" \
"sh %["#TEMP12"], "#B"(%[temp20]) \n\t"
static void FTransform(const uint8_t* src, const uint8_t* ref, int16_t* out) {
const int c2217 = 2217;
const int c5352 = 5352;
int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7, temp8;
int temp9, temp10, temp11, temp12, temp13, temp14, temp15, temp16;
int temp17, temp18, temp19, temp20;
const int* const args[3] =
{ (const int*)src, (const int*)ref, (const int*)out };
__asm__ volatile (
HORIZONTAL_PASS( 0, temp0, temp1, temp2, temp3)
HORIZONTAL_PASS(16, temp4, temp5, temp6, temp7)
HORIZONTAL_PASS(32, temp8, temp9, temp10, temp11)
HORIZONTAL_PASS(48, temp12, temp13, temp14, temp15)
"lw %[temp20], 8(%[args]) \n\t"
VERTICAL_PASS(0, 8, 16, 24, temp0, temp4, temp8, temp12)
VERTICAL_PASS(2, 10, 18, 26, temp1, temp5, temp9, temp13)
VERTICAL_PASS(4, 12, 20, 28, temp2, temp6, temp10, temp14)
VERTICAL_PASS(6, 14, 22, 30, temp3, temp7, temp11, temp15)
OUTPUT_EARLY_CLOBBER_REGS_18(),
[temp0]"=&r"(temp0), [temp19]"=&r"(temp19), [temp20]"=&r"(temp20)
: [args]"r"(args), [c2217]"r"(c2217), [c5352]"r"(c5352)
: "memory", "hi", "lo"
);
}
#undef VERTICAL_PASS
#undef HORIZONTAL_PASS
static WEBP_INLINE void ITransformOne(const uint8_t* ref, const int16_t* in, static WEBP_INLINE void ITransformOne(const uint8_t* ref, const int16_t* in,
uint8_t* dst) { uint8_t* dst) {
int temp1, temp2, temp3, temp4, temp5, temp6, temp7, temp8, temp9; int temp1, temp2, temp3, temp4, temp5, temp6, temp7, temp8, temp9;
@ -220,6 +318,7 @@ extern WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspInitMIPSdspR2(void);
WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspInitMIPSdspR2(void) { WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspInitMIPSdspR2(void) {
#if defined(WEBP_USE_MIPS_DSP_R2) #if defined(WEBP_USE_MIPS_DSP_R2)
VP8FTransform = FTransform;
VP8ITransform = ITransform; VP8ITransform = ITransform;
VP8TDisto4x4 = Disto4x4; VP8TDisto4x4 = Disto4x4;
VP8TDisto16x16 = Disto16x16; VP8TDisto16x16 = Disto16x16;