37 lines
1.1 KiB
Plaintext
37 lines
1.1 KiB
Plaintext
#include "../test_static.isph"
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#define N 256
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// Init a and b with positive values
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void init(uniform uint8 a[], uniform int8 b[]) {
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for (uniform int i = 0; i < N; i++) {
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a[i] = (uniform uint8)(i % 128);
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b[i] = (uniform int8)(i % 128);
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}
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}
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task void f_v(uniform float dst[]) {
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uniform uint8 a[N];
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uniform int8 b[N];
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init(a, b);
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uniform uint a_packed[N / 4];
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pack4toint<uniform uint8>(a, a_packed, N);
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uniform uint b_packed[N / 4];
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pack4toint<uniform int8>(b, b_packed, N);
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foreach (i = 0 ... N/4) {
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dst[i] = dot4add_u8i8packed(a_packed[i], b_packed[i], -i /*Use negative accumulator */);
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}
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}
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task void result(uniform float dst[]) {
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uniform uint8 a[N];
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uniform int8 b[N];
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init(a, b);
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for (uniform int i = 0; i < N; i += 4) {
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uniform int result = 0;
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for (uniform int j = 0; j < 4; ++j) {
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uniform int16 product = (uniform int16)(uniform uint16)(a[i + j]) * (uniform int16)(b[i + j]);
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result += (uniform int32)(product);
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}
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dst[i / 4] = result + (-i / 4);
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}
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} |