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Add Rbit_V instruction. Add 8 tests (Rbit_V; Rev16_V, Rev32_V, Rev64_V). Improve CountSetBits8() algorithm. (#212)

Browse source 
* Update AOpCodeTable.cs

* Update AInstEmitSimdArithmetic.cs

* Update AInstEmitSimdLogical.cs

* Update AVectorHelper.cs

* Update ASoftFallback.cs

* Update Instructions.cs

* Update CpuTestSimd.cs

* Update CpuTestSimdReg.cs

* Improve CountSetBits8() algorithm.

* Improve CountSetBits8() algorithm.
This commit is contained in:
LDj3SNuD 2018-07-03 08:31:16 +02:00 • committed by gdkchan
parent d24ea0d51b
commit c228cf320d
8 changed files with 502 additions and 37 deletions
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24
ChocolArm64/Instruction/ASoftFallback.cs
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@ -30,6 +30,14 @@ namespace ChocolArm64.Instruction
return (ulong)Size;
}
public static uint CountSetBits8(uint Value)
{
Value = ((Value >> 1) & 0x55) + (Value & 0x55);
Value = ((Value >> 2) & 0x33) + (Value & 0x33);
return (Value >> 4) + (Value & 0x0f);
}
private const uint Crc32RevPoly = 0xedb88320;
private const uint Crc32cRevPoly = 0x82f63b78;
@ -89,6 +97,14 @@ namespace ChocolArm64.Instruction
return Crc;
}
public static uint ReverseBits8(uint Value)
{
Value = ((Value & 0xaa) >> 1) | ((Value & 0x55) << 1);
Value = ((Value & 0xcc) >> 2) | ((Value & 0x33) << 2);
return (Value >> 4) | ((Value & 0x0f) << 4);
}
public static uint ReverseBits32(uint Value)
{
Value = ((Value & 0xaaaaaaaa) >> 1) | ((Value & 0x55555555) << 1);
@ -101,10 +117,10 @@ namespace ChocolArm64.Instruction
public static ulong ReverseBits64(ulong Value)
{
Value = ((Value & 0xaaaaaaaaaaaaaaaa) >> 1) | ((Value & 0x5555555555555555) << 1);
Value = ((Value & 0xcccccccccccccccc) >> 2) | ((Value & 0x3333333333333333) << 2);
Value = ((Value & 0xf0f0f0f0f0f0f0f0) >> 4) | ((Value & 0x0f0f0f0f0f0f0f0f) << 4);
Value = ((Value & 0xff00ff00ff00ff00) >> 8) | ((Value & 0x00ff00ff00ff00ff) << 8);
Value = ((Value & 0xaaaaaaaaaaaaaaaa) >> 1 ) | ((Value & 0x5555555555555555) << 1 );
Value = ((Value & 0xcccccccccccccccc) >> 2 ) | ((Value & 0x3333333333333333) << 2 );
Value = ((Value & 0xf0f0f0f0f0f0f0f0) >> 4 ) | ((Value & 0x0f0f0f0f0f0f0f0f) << 4 );
Value = ((Value & 0xff00ff00ff00ff00) >> 8 ) | ((Value & 0x00ff00ff00ff00ff) << 8 );
Value = ((Value & 0xffff0000ffff0000) >> 16) | ((Value & 0x0000ffff0000ffff) << 16);
return (Value >> 32) | (Value << 32);