diff options
Diffstat (limited to 'volk/spu_lib/spu_16s_cmpgt_unaligned.c')
| -rw-r--r-- | volk/spu_lib/spu_16s_cmpgt_unaligned.c | 66 |
1 files changed, 33 insertions, 33 deletions
diff --git a/volk/spu_lib/spu_16s_cmpgt_unaligned.c b/volk/spu_lib/spu_16s_cmpgt_unaligned.c index 765cacd9a..8811e6801 100644 --- a/volk/spu_lib/spu_16s_cmpgt_unaligned.c +++ b/volk/spu_lib/spu_16s_cmpgt_unaligned.c @@ -4,14 +4,14 @@ void* libvector_16s_cmpgt_unaligned(void* target, void* src, signed short val, u //loop iterator i int i = 0; void* retval = target; - + //put the target and source addresses into qwords vector unsigned int address_counter_tgt = {(unsigned int)target, 0, 0, 0}; vector unsigned int address_counter_src = {(unsigned int)src, 0, 0 ,0}; - + //create shuffle masks - + //shuffle mask building blocks: //all from the first vector vector unsigned char oneup = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, @@ -19,9 +19,9 @@ void* libvector_16s_cmpgt_unaligned(void* target, void* src, signed short val, u //all from the second vector vector unsigned char second_oneup = {0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f}; - - + + //gamma: second half of the second, first half of the first, break at (unsigned int)src%16 vector unsigned char src_cmp = spu_splats((unsigned char)((unsigned int)src%16)); vector unsigned char gt_res = spu_cmpgt(oneup, src_cmp); @@ -29,16 +29,16 @@ void* libvector_16s_cmpgt_unaligned(void* target, void* src, signed short val, u vector unsigned char cmp_res = spu_or(gt_res, eq_res); vector unsigned char sixteen_uchar = spu_splats((unsigned char)16); vector unsigned char phase_change = spu_and(sixteen_uchar, cmp_res); - vector unsigned int shuffle_mask_gamma = spu_add((vector unsigned int)phase_change, + vector unsigned int shuffle_mask_gamma = spu_add((vector unsigned int)phase_change, (vector unsigned int)oneup); shuffle_mask_gamma = spu_rlqwbyte(shuffle_mask_gamma, (unsigned int)src%16); - - + + vector unsigned char tgt_second = spu_rlqwbyte(second_oneup, -((unsigned int)target%16)); vector unsigned char tgt_first = spu_rlqwbyte(oneup, -((unsigned int)target%16)); - + //alpha: first half of first, second half of second, break at (unsigned int)target%16 src_cmp = spu_splats((unsigned char)((unsigned int)target%16)); gt_res = spu_cmpgt(oneup, src_cmp); @@ -47,13 +47,13 @@ void* libvector_16s_cmpgt_unaligned(void* target, void* src, signed short val, u phase_change = spu_and(sixteen_uchar, cmp_res); vector unsigned int shuffle_mask_alpha = spu_add((vector unsigned int)phase_change, (vector unsigned int)oneup); - + //delta: first half of first, first half of second, break at (unsigned int)target%16 vector unsigned char shuffle_mask_delta = spu_shuffle(oneup, tgt_second, (vector unsigned char)shuffle_mask_alpha); //epsilon: second half of second, second half of first, break at (unsigned int)target%16 vector unsigned char shuffle_mask_epsilon = spu_shuffle(tgt_second, oneup, (vector unsigned char)shuffle_mask_alpha); //zeta: second half of second, first half of first, break at 16 - (unsigned int)target%16 - vector unsigned int shuffle_mask_zeta = spu_rlqwbyte(shuffle_mask_alpha, (unsigned int)target%16); + vector unsigned int shuffle_mask_zeta = spu_rlqwbyte(shuffle_mask_alpha, (unsigned int)target%16); //beta: first half of first, second half of second, break at num_bytes%16 src_cmp = spu_splats((unsigned char)(num_bytes%16)); @@ -63,17 +63,17 @@ void* libvector_16s_cmpgt_unaligned(void* target, void* src, signed short val, u phase_change = spu_and(sixteen_uchar, cmp_res); vector unsigned int shuffle_mask_beta = spu_add((vector unsigned int)phase_change, (vector unsigned int)oneup); - - - - + + + + qword src_past; qword src_present; qword tgt_past; qword tgt_present; - + qword in_temp; qword out_temp0; qword out_temp1; @@ -85,53 +85,53 @@ void* libvector_16s_cmpgt_unaligned(void* target, void* src, signed short val, u vector unsigned short compare; vector unsigned short ones = {1, 1, 1, 1, 1, 1, 1, 1}; vector unsigned short after_and; - + for(i = 0; i < num_bytes/16; ++i) { - + src_present = si_lqd((qword)address_counter_src, 16); tgt_present = si_lqd((qword)address_counter_tgt, 16); - + in_temp = spu_shuffle(src_present, src_past, (vector unsigned char)shuffle_mask_gamma); compare = spu_cmpgt((vector signed short) in_temp, vec_val); after_and = spu_and(compare, ones); - - + + out_temp0 = spu_shuffle(tgt_past, (qword)after_and, shuffle_mask_delta); out_temp1 = spu_shuffle(tgt_present, (qword)after_and, shuffle_mask_epsilon); si_stqd(out_temp0, (qword)address_counter_tgt, 0); si_stqd(out_temp1, (qword)address_counter_tgt, 16); - + tgt_past = out_temp1; src_past = src_present; address_counter_src = spu_add(address_counter_src, 16); address_counter_tgt = spu_add(address_counter_tgt, 16); - + } - + src_present = si_lqd((qword)address_counter_src, 16); tgt_present = si_lqd((qword)address_counter_tgt, 16); - - + + in_temp = spu_shuffle(src_present, src_past,(vector unsigned char) shuffle_mask_gamma); - + compare = spu_cmpgt((vector signed short) in_temp, vec_val); after_and = spu_and(compare, ones); - + qword target_temp = spu_shuffle(tgt_present, tgt_past, (vector unsigned char) shuffle_mask_zeta); qword meld = spu_shuffle((qword)after_and, target_temp, (vector unsigned char)shuffle_mask_beta); - - + + out_temp0 = spu_shuffle(tgt_past, meld, shuffle_mask_delta); out_temp1 = spu_shuffle(tgt_present, meld, shuffle_mask_epsilon); - + si_stqd(out_temp0, (qword)address_counter_tgt, 0); si_stqd(out_temp1, (qword)address_counter_tgt, 16); - + return retval; } @@ -156,5 +156,5 @@ int main(){ } printf("\n"); } -*/ +*/ |