ref: bf168b24f5a52be9bd692dbadfb772352c0db578
parent: 08d0a7fd0fe925d95677bb89f9e7fef5758e8289
parent: c06991fce6377d450d466518aa8d7fce2060df68
author: Johann Koenig <johannkoenig@google.com>
date: Mon Jan 9 14:47:00 EST 2017
Merge "Fix mips dspr2 idct16x16 functions for large coefficient input"
--- a/vpx_dsp/mips/itrans16_dspr2.c
+++ b/vpx_dsp/mips/itrans16_dspr2.c
@@ -983,6 +983,47 @@
[dest] "+&r"(dest)
: [stride] "r"(stride), [vector_a1] "r"(vector_a1));
}
+ } else if (a1 > 255) {+ int32_t a11, a12, vector_a11, vector_a12;
+
+ /* use quad-byte
+ * input and output memory are four byte aligned */
+ a11 = a1 >> 1;
+ a12 = a1 - a11;
+ __asm__ __volatile__(
+ "replv.qb %[vector_a11], %[a11] \n\t"
+ "replv.qb %[vector_a12], %[a12] \n\t"
+
+ : [vector_a11] "=&r"(vector_a11), [vector_a12] "=&r"(vector_a12)
+ : [a11] "r"(a11), [a12] "r"(a12));
+
+ for (r = 16; r--;) {+ __asm__ __volatile__(
+ "lw %[t1], 0(%[dest]) \n\t"
+ "lw %[t2], 4(%[dest]) \n\t"
+ "lw %[t3], 8(%[dest]) \n\t"
+ "lw %[t4], 12(%[dest]) \n\t"
+ "addu_s.qb %[vector_1], %[t1], %[vector_a11] \n\t"
+ "addu_s.qb %[vector_2], %[t2], %[vector_a11] \n\t"
+ "addu_s.qb %[vector_3], %[t3], %[vector_a11] \n\t"
+ "addu_s.qb %[vector_4], %[t4], %[vector_a11] \n\t"
+ "addu_s.qb %[vector_1], %[vector_1], %[vector_a12] \n\t"
+ "addu_s.qb %[vector_2], %[vector_2], %[vector_a12] \n\t"
+ "addu_s.qb %[vector_3], %[vector_3], %[vector_a12] \n\t"
+ "addu_s.qb %[vector_4], %[vector_4], %[vector_a12] \n\t"
+ "sw %[vector_1], 0(%[dest]) \n\t"
+ "sw %[vector_2], 4(%[dest]) \n\t"
+ "sw %[vector_3], 8(%[dest]) \n\t"
+ "sw %[vector_4], 12(%[dest]) \n\t"
+ "add %[dest], %[dest], %[stride] \n\t"
+
+ : [t1] "=&r"(t1), [t2] "=&r"(t2), [t3] "=&r"(t3), [t4] "=&r"(t4),
+ [vector_1] "=&r"(vector_1), [vector_2] "=&r"(vector_2),
+ [vector_3] "=&r"(vector_3), [vector_4] "=&r"(vector_4),
+ [dest] "+&r"(dest)
+ : [stride] "r"(stride), [vector_a11] "r"(vector_a11),
+ [vector_a12] "r"(vector_a12));
+ }
} else {/* use quad-byte
* input and output memory are four byte aligned */