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Code Issues Releases Wiki Activity

Fall back to old rotr64 optimization for AMD

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This commit is contained in:
jsteube 2017-08-16 16:14:46 +02:00
parent 0dcec01623
commit 58012ada0c
1 changed files with 20 additions and 4 deletions
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24
OpenCL/inc_types.cl
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@ -198,9 +198,17 @@ u32 rotl32_S (const u32 a, const u32 n)
return rotate (a, n); return rotate (a, n);
} }
u64 rotr64_S (const u64 a, const u32 n) inline u64 rotr64_S (const u64 a, const u32 n)
{ {
return rotate (a, (u64) (64 - n)); const u32 a0 = h32_from_64_S (a);
const u32 a1 = l32_from_64_S (a);
const u32 t0 = (n >= 32) ? amd_bitalign (a0, a1, n - 32) : amd_bitalign (a1, a0, n);
const u32 t1 = (n >= 32) ? amd_bitalign (a1, a0, n - 32) : amd_bitalign (a0, a1, n);
const u64 r = hl32_to_64_S (t0, t1);
return r;
} }
u64 rotl64_S (const u64 a, const u32 n) u64 rotl64_S (const u64 a, const u32 n)
@ -232,9 +240,17 @@ u32x rotl32 (const u32x a, const u32 n)
return rotate (a, n); return rotate (a, n);
} }
u64x rotr64 (const u64x a, const u32 n) inline u64x rotr64 (const u64x a, const u32 n)
{ {
return rotate (a, (u64x) (64 - n)); const u32x a0 = h32_from_64 (a);
const u32x a1 = l32_from_64 (a);
const u32x t0 = (n >= 32) ? amd_bitalign (a0, a1, n - 32) : amd_bitalign (a1, a0, n);
const u32x t1 = (n >= 32) ? amd_bitalign (a1, a0, n - 32) : amd_bitalign (a0, a1, n);
const u64x r = hl32_to_64 (t0, t1);
return r;
} }
u64x rotl64 (const u64x a, const u32 n) u64x rotl64 (const u64x a, const u32 n)