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[VSX] correct lshiftbyte_m128/rshiftbyte_m128, variable_byte_shift

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This commit is contained in:
Konstantinos Margaritis
2022-09-06 23:39:44 +03:00
parent 17467ff21b
commit 94fe406f0c
2 changed files with 56 additions and 8 deletions
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13
src/util/arch/ppc64el/simd_utils.h
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@@ -285,7 +285,6 @@ m128 loadbytes128(const void *ptr, unsigned int n) {
return a;
}
#define CASE_ALIGN_VECTORS(a, b, offset) case offset: return (m128)vec_sld((int8x16_t)(b), (int8x16_t)(a), (16 - offset)); break;
static really_really_inline
@@ -326,21 +325,21 @@ m128 palignr(m128 r, m128 l, int offset) {
static really_really_inline
m128 rshiftbyte_m128(m128 a, unsigned b) {
return rshift_m128(a,b);
return palignr_imm(zeroes128(), a, b);
}
static really_really_inline
m128 lshiftbyte_m128(m128 a, unsigned b) {
return lshift_m128(a,b);
return palignr_imm(a, zeroes128(), 16 - b);
}
static really_inline
m128 variable_byte_shift_m128(m128 in, s32 amount) {
assert(amount >= -16 && amount <= 16);
if (amount < 0){
return palignr_imm(zeroes128(), in, -amount);
} else{
return palignr_imm(in, zeroes128(), 16 - amount);
if (amount < 0) {
return rshiftbyte_m128(in, -amount);
} else {
return lshiftbyte_m128(in, amount);
}
}