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Implemented fast paths for: (#841)

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* cpu-misc_opt

* B = ~b

* ;
This commit is contained in:
LDj3SNuD 2019-12-07 13:45:32 +01:00 • committed by Ac_K
parent d562ba37a0
commit 8c85bdf2ed
16 changed files with 450 additions and 163 deletions
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17
ARMeilleure/Decoders/OpCodeSimdImm.cs
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@ -23,19 +23,19 @@ namespace ARMeilleure.Decoders
if (modeHigh == 0b111)
{
Size = modeLow != 0 ? op : 3;
switch (op | (modeLow << 1))
{
case 0:
// 64-bits Immediate.
// Transform abcd efgh into abcd efgh abcd efgh ...
Size = 3;
imm = (long)((ulong)imm * 0x0101010101010101);
break;
case 1:
// 64-bits Immediate.
// Transform abcd efgh into aaaa aaaa bbbb bbbb ...
Size = 3;
imm = (imm & 0xf0) >> 4 | (imm & 0x0f) << 4;
imm = (imm & 0xcc) >> 2 | (imm & 0x33) << 2;
imm = (imm & 0xaa) >> 1 | (imm & 0x55) << 1;
@ -49,9 +49,16 @@ namespace ARMeilleure.Decoders
break;
case 2:
// 2 x 32-bits floating point Immediate.
Size = 0;
imm = (long)DecoderHelper.Imm8ToFP32Table[(int)imm];
imm |= imm << 32;
break;
case 3:
// Floating point Immediate.
imm = DecoderHelper.DecodeImm8Float(imm, Size);
// 64-bits floating point Immediate.
Size = 1;
imm = (long)DecoderHelper.Imm8ToFP64Table[(int)imm];
break;
}
}
@ -72,7 +79,7 @@ namespace ARMeilleure.Decoders
}
else
{
// 8 bits without shift.
// 8-bits without shift.
Size = 0;
}