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MIPS: MIPS32r1: Added optimization for FTransform

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Change-Id: I9384dac483e8f98bcfdd277a0a3d6ec7c7a7b297
This commit is contained in:
Djordje Pesut 2014-02-26 12:48:26 +01:00 committed by skal
parent 7dad095bb4
commit 7231f610aa
1 changed files with 107 additions and 0 deletions
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107
src/dsp/enc_mips32.c
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@ -405,6 +405,112 @@ static int Disto16x16MIPS32(const uint8_t* const a, const uint8_t* const b,
return D;
}
// macro for one horizontal pass in FTransform
// temp0..temp15 holds tmp[0]..tmp[15]
// A..D - offsets in bytes to load from src and ref buffers
// TEMP0..TEMP3 - registers for corresponding tmp elements
#define HORIZONTAL_PASS(A, B, C, D, TEMP0, TEMP1, TEMP2, TEMP3) \
"lw %["#TEMP1"], 0(%[args]) \n\t" \
"lw %["#TEMP2"], 4(%[args]) \n\t" \
"lbu %[temp16], "#A"(%["#TEMP1"]) \n\t" \
"lbu %[temp17], "#A"(%["#TEMP2"]) \n\t" \
"lbu %[temp18], "#B"(%["#TEMP1"]) \n\t" \
"lbu %[temp19], "#B"(%["#TEMP2"]) \n\t" \
"subu %[temp20], %[temp16], %[temp17] \n\t" \
"lbu %[temp16], "#C"(%["#TEMP1"]) \n\t" \
"lbu %[temp17], "#C"(%["#TEMP2"]) \n\t" \
"subu %["#TEMP0"], %[temp18], %[temp19] \n\t" \
"lbu %[temp18], "#D"(%["#TEMP1"]) \n\t" \
"lbu %[temp19], "#D"(%["#TEMP2"]) \n\t" \
"subu %["#TEMP1"], %[temp16], %[temp17] \n\t" \
"subu %["#TEMP2"], %[temp18], %[temp19] \n\t" \
"addu %["#TEMP3"], %[temp20], %["#TEMP2"] \n\t" \
"subu %["#TEMP2"], %[temp20], %["#TEMP2"] \n\t" \
"addu %[temp20], %["#TEMP0"], %["#TEMP1"] \n\t" \
"subu %["#TEMP0"], %["#TEMP0"], %["#TEMP1"] \n\t" \
"mul %[temp16], %["#TEMP2"], %[c5352] \n\t" \
"mul %[temp17], %["#TEMP2"], %[c2217] \n\t" \
"mul %[temp18], %["#TEMP0"], %[c5352] \n\t" \
"mul %[temp19], %["#TEMP0"], %[c2217] \n\t" \
"addu %["#TEMP1"], %["#TEMP3"], %[temp20] \n\t" \
"subu %[temp20], %["#TEMP3"], %[temp20] \n\t" \
"sll %["#TEMP0"], %["#TEMP1"], 3 \n\t" \
"sll %["#TEMP2"], %[temp20], 3 \n\t" \
"addiu %[temp16], %[temp16], 1812 \n\t" \
"addiu %[temp17], %[temp17], 937 \n\t" \
"addu %[temp16], %[temp16], %[temp19] \n\t" \
"subu %[temp17], %[temp17], %[temp18] \n\t" \
"sra %["#TEMP1"], %[temp16], 9 \n\t" \
"sra %["#TEMP3"], %[temp17], 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 FTransformMIPS32(const uint8_t* src, const uint8_t* ref,
int16_t* out) {
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 c2217 = 2217;
const int c5352 = 5352;
const int* const args[3] =
{ (const int*)src, (const int*)ref, (const int*)out };
__asm__ volatile(
HORIZONTAL_PASS( 0, 1, 2, 3, temp0, temp1, temp2, temp3)
HORIZONTAL_PASS(16, 17, 18, 19, temp4, temp5, temp6, temp7)
HORIZONTAL_PASS(32, 33, 34, 35, temp8, temp9, temp10, temp11)
HORIZONTAL_PASS(48, 49, 50, 51, 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)
: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
[temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
[temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [temp8]"=&r"(temp8),
[temp9]"=&r"(temp9), [temp10]"=&r"(temp10), [temp11]"=&r"(temp11),
[temp12]"=&r"(temp12), [temp13]"=&r"(temp13), [temp14]"=&r"(temp14),
[temp15]"=&r"(temp15), [temp16]"=&r"(temp16), [temp17]"=&r"(temp17),
[temp18]"=&r"(temp18), [temp19]"=&r"(temp19), [temp20]"=&r"(temp20)
: [args]"r"(args), [c2217]"r"(c2217), [c5352]"r"(c5352)
: "memory", "hi", "lo"
);
}
#undef VERTICAL_PASS
#undef HORIZONTAL_PASS
#endif // WEBP_USE_MIPS32
//------------------------------------------------------------------------------
@ -418,5 +524,6 @@ void VP8EncDspInitMIPS32(void) {
VP8EncQuantizeBlock = QuantizeBlockMIPS32;
VP8TDisto4x4 = Disto4x4MIPS32;
VP8TDisto16x16 = Disto16x16MIPS32;
VP8FTransform = FTransformMIPS32;
#endif // WEBP_USE_MIPS32
}