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| author | mageven <62494521+mageven@users.noreply.github.com> | 2021-02-22 20:56:13 +0530 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-02-22 16:26:13 +0100 |
| commit | 9bda7b469946dc44e4ee625ea69494da215c57aa (patch) | |
| tree | b90562504d1b334d61b63d7f4d0016270d207fc6 /ARMeilleure/Instructions/SoftFallback.cs | |
| parent | dc0adb533dc15a007e9ca2dc0533ef6a61f13393 (diff) | |
Implement VCNT instruction (#1963)
* Implement VCNT based on AArch64 CNT
Add tests
* Update PTC version
* Address LDj's comments
* Explicit size in encoding
* Tighter tests
* Replace SoftFallback with IR helper
Co-authored-by: LDj3SNuD <35856442+LDj3SNuD@users.noreply.github.com>
* Reduce one BitwiseAnd from IR fallback
Based on popcount64b from https://en.wikipedia.org/wiki/Hamming_weight#Efficient_implementation
* Rename parameter and add assert
Co-authored-by: LDj3SNuD <35856442+LDj3SNuD@users.noreply.github.com>
Co-authored-by: LDj3SNuD <35856442+LDj3SNuD@users.noreply.github.com>
Diffstat (limited to 'ARMeilleure/Instructions/SoftFallback.cs')
| -rw-r--r-- | ARMeilleure/Instructions/SoftFallback.cs | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/ARMeilleure/Instructions/SoftFallback.cs b/ARMeilleure/Instructions/SoftFallback.cs index 1d8fa2e2..3ff6483d 100644 --- a/ARMeilleure/Instructions/SoftFallback.cs +++ b/ARMeilleure/Instructions/SoftFallback.cs @@ -846,14 +846,6 @@ namespace ARMeilleure.Instructions return (ulong)count; } - - public static ulong CountSetBits8(ulong value) // "size" is 8 (SIMD&FP Inst.). - { - value = ((value >> 1) & 0x55ul) + (value & 0x55ul); - value = ((value >> 2) & 0x33ul) + (value & 0x33ul); - - return (value >> 4) + (value & 0x0ful); - } #endregion #region "Table" |