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Diffstat (limited to 'simd/jcsample-altivec.c')
-rw-r--r--simd/jcsample-altivec.c104
1 files changed, 53 insertions, 51 deletions
diff --git a/simd/jcsample-altivec.c b/simd/jcsample-altivec.c
index f312870..62f72be 100644
--- a/simd/jcsample-altivec.c
+++ b/simd/jcsample-altivec.c
@@ -35,15 +35,16 @@ jsimd_h2v1_downsample_altivec (JDIMENSION image_width, int max_v_samp_factor,
int outrow, outcol;
JDIMENSION output_cols = width_blocks * DCTSIZE;
JSAMPROW inptr, outptr;
- __vector unsigned char tmpa, tmpb, out;
- __vector unsigned short tmpae, tmpao, tmpbe, tmpbo, outl, outh;
+
+ __vector unsigned char this0, next0, out;
+ __vector unsigned short this0e, this0o, next0e, next0o, outl, outh;
/* Constants */
- __vector unsigned short bias = { __4X2(0, 1) },
- one = { __8X(1) };
+ __vector unsigned short pw_bias = { __4X2(0, 1) },
+ pw_one = { __8X(1) };
__vector unsigned char even_odd_index =
{ 0, 2, 4, 6, 8, 10, 12, 14, 1, 3, 5, 7, 9, 11, 13, 15 },
- zero = { __16X(0) };
+ pb_zero = { __16X(0) };
expand_right_edge(input_data, max_v_samp_factor, image_width,
output_cols * 2);
@@ -55,22 +56,22 @@ jsimd_h2v1_downsample_altivec (JDIMENSION image_width, int max_v_samp_factor,
for (outcol = output_cols; outcol > 0;
outcol -= 16, inptr += 32, outptr += 16) {
- tmpa = vec_ld(0, inptr);
- tmpa = vec_perm(tmpa, tmpa, even_odd_index);
- tmpae = (__vector unsigned short)vec_mergeh(zero, tmpa);
- tmpao = (__vector unsigned short)vec_mergel(zero, tmpa);
- outl = vec_add(tmpae, tmpao);
- outl = vec_add(outl, bias);
- outl = vec_sr(outl, one);
+ this0 = vec_ld(0, inptr);
+ this0 = vec_perm(this0, this0, even_odd_index);
+ this0e = (__vector unsigned short)vec_mergeh(pb_zero, this0);
+ this0o = (__vector unsigned short)vec_mergel(pb_zero, this0);
+ outl = vec_add(this0e, this0o);
+ outl = vec_add(outl, pw_bias);
+ outl = vec_sr(outl, pw_one);
if (outcol > 16) {
- tmpb = vec_ld(16, inptr);
- tmpb = vec_perm(tmpb, tmpb, even_odd_index);
- tmpbe = (__vector unsigned short)vec_mergeh(zero, tmpb);
- tmpbo = (__vector unsigned short)vec_mergel(zero, tmpb);
- outh = vec_add(tmpbe, tmpbo);
- outh = vec_add(outh, bias);
- outh = vec_sr(outh, one);
+ next0 = vec_ld(16, inptr);
+ next0 = vec_perm(next0, next0, even_odd_index);
+ next0e = (__vector unsigned short)vec_mergeh(pb_zero, next0);
+ next0o = (__vector unsigned short)vec_mergel(pb_zero, next0);
+ outh = vec_add(next0e, next0o);
+ outh = vec_add(outh, pw_bias);
+ outh = vec_sr(outh, pw_one);
} else
outh = vec_splat_u16(0);
@@ -90,16 +91,17 @@ jsimd_h2v2_downsample_altivec (JDIMENSION image_width, int max_v_samp_factor,
int inrow, outrow, outcol;
JDIMENSION output_cols = width_blocks * DCTSIZE;
JSAMPROW inptr0, inptr1, outptr;
- __vector unsigned char tmp0a, tmp0b, tmp1a, tmp1b, out;
- __vector unsigned short tmp0ae, tmp0ao, tmp0be, tmp0bo, tmp1ae, tmp1ao,
- tmp1be, tmp1bo, out0l, out0h, out1l, out1h, outl, outh;
+
+ __vector unsigned char this0, next0, this1, next1, out;
+ __vector unsigned short this0e, this0o, next0e, next0o, this1e, this1o,
+ next1e, next1o, out0l, out0h, out1l, out1h, outl, outh;
/* Constants */
- __vector unsigned short bias = { __4X2(1, 2) },
- two = { __8X(2) };
+ __vector unsigned short pw_bias = { __4X2(1, 2) },
+ pw_two = { __8X(2) };
__vector unsigned char even_odd_index =
{ 0, 2, 4, 6, 8, 10, 12, 14, 1, 3, 5, 7, 9, 11, 13, 15 },
- zero = { __16X(0) };
+ pb_zero = { __16X(0) };
expand_right_edge(input_data, max_v_samp_factor, image_width,
output_cols * 2);
@@ -107,45 +109,45 @@ jsimd_h2v2_downsample_altivec (JDIMENSION image_width, int max_v_samp_factor,
for (inrow = 0, outrow = 0; outrow < v_samp_factor;
inrow += 2, outrow++) {
- outptr = output_data[outrow];
inptr0 = input_data[inrow];
inptr1 = input_data[inrow + 1];
+ outptr = output_data[outrow];
for (outcol = output_cols; outcol > 0;
outcol -= 16, inptr0 += 32, inptr1 += 32, outptr += 16) {
- tmp0a = vec_ld(0, inptr0);
- tmp0a = vec_perm(tmp0a, tmp0a, even_odd_index);
- tmp0ae = (__vector unsigned short)vec_mergeh(zero, tmp0a);
- tmp0ao = (__vector unsigned short)vec_mergel(zero, tmp0a);
- out0l = vec_add(tmp0ae, tmp0ao);
+ this0 = vec_ld(0, inptr0);
+ this0 = vec_perm(this0, this0, even_odd_index);
+ this0e = (__vector unsigned short)vec_mergeh(pb_zero, this0);
+ this0o = (__vector unsigned short)vec_mergel(pb_zero, this0);
+ out0l = vec_add(this0e, this0o);
- tmp1a = vec_ld(0, inptr1);
- tmp1a = vec_perm(tmp1a, tmp1a, even_odd_index);
- tmp1ae = (__vector unsigned short)vec_mergeh(zero, tmp1a);
- tmp1ao = (__vector unsigned short)vec_mergel(zero, tmp1a);
- out1l = vec_add(tmp1ae, tmp1ao);
+ this1 = vec_ld(0, inptr1);
+ this1 = vec_perm(this1, this1, even_odd_index);
+ this1e = (__vector unsigned short)vec_mergeh(pb_zero, this1);
+ this1o = (__vector unsigned short)vec_mergel(pb_zero, this1);
+ out1l = vec_add(this1e, this1o);
outl = vec_add(out0l, out1l);
- outl = vec_add(outl, bias);
- outl = vec_sr(outl, two);
+ outl = vec_add(outl, pw_bias);
+ outl = vec_sr(outl, pw_two);
if (outcol > 16) {
- tmp0b = vec_ld(16, inptr0);
- tmp0b = vec_perm(tmp0b, tmp0b, even_odd_index);
- tmp0be = (__vector unsigned short)vec_mergeh(zero, tmp0b);
- tmp0bo = (__vector unsigned short)vec_mergel(zero, tmp0b);
- out0h = vec_add(tmp0be, tmp0bo);
-
- tmp1b = vec_ld(16, inptr1);
- tmp1b = vec_perm(tmp1b, tmp1b, even_odd_index);
- tmp1be = (__vector unsigned short)vec_mergeh(zero, tmp1b);
- tmp1bo = (__vector unsigned short)vec_mergel(zero, tmp1b);
- out1h = vec_add(tmp1be, tmp1bo);
+ next0 = vec_ld(16, inptr0);
+ next0 = vec_perm(next0, next0, even_odd_index);
+ next0e = (__vector unsigned short)vec_mergeh(pb_zero, next0);
+ next0o = (__vector unsigned short)vec_mergel(pb_zero, next0);
+ out0h = vec_add(next0e, next0o);
+
+ next1 = vec_ld(16, inptr1);
+ next1 = vec_perm(next1, next1, even_odd_index);
+ next1e = (__vector unsigned short)vec_mergeh(pb_zero, next1);
+ next1o = (__vector unsigned short)vec_mergel(pb_zero, next1);
+ out1h = vec_add(next1e, next1o);
outh = vec_add(out0h, out1h);
- outh = vec_add(outh, bias);
- outh = vec_sr(outh, two);
+ outh = vec_add(outh, pw_bias);
+ outh = vec_sr(outh, pw_two);
} else
outh = vec_splat_u16(0);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 08:05:29 +0000