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Using sllv instead of slli for compiling BIKE with GCC-6 (#598)

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Nir Drucker 2020-01-28 16:23:07 +02:00 committed by Douglas Stebila
parent d4cd8d44a1
commit 8451069750
1 changed files with 5 additions and 2 deletions
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7
src/kem/bike/additional/secure_decode_avx512.c
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@ -59,6 +59,9 @@ _INLINE_ void
rotate512_small(OUT syndrome_t *out, IN const syndrome_t *in, size_t bitscount) {
__m512i previous = _mm512_setzero_si512();
const uint64_t count64 = bitscount & 0x3f;
const __m512i count64_512 = _mm512_set1_epi64(count64);
const __m512i count64_512r = _mm512_set1_epi64(64 - count64);
const __m512i num_full_qw = _mm512_set1_epi8(bitscount >> 6);
const __m512i one = _mm512_set1_epi64(1);
__m512i a0, a1;
@ -79,8 +82,8 @@ rotate512_small(OUT syndrome_t *out, IN const syndrome_t *in, size_t bitscount)
a0 = _mm512_permutex2var_epi64(in512, idx, previous);
a1 = _mm512_permutex2var_epi64(in512, idx1, previous);
a0 = _mm512_srli_epi64(a0, count64);
a1 = _mm512_slli_epi64(a1, 64 - count64);
a0 = _mm512_srlv_epi64(a0, count64_512);
a1 = _mm512_sllv_epi64(a1, count64_512r);
// Shift less than 64 (quadwords internal)
const __m512i out512 = _mm512_or_si512(a0, a1);