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ryujinx-fork/ARMeilleure/Decoders/OpCode32SimdRev.cs
jduncanator 68e15c1a74
Implement Fast Paths for most A32 SIMD instructions (#952)
* Begin work on A32 SIMD Intrinsics

* More instructions, some cleanup.

* Intrinsics for Move instructions (zip etc)

These pass the existing tests.

* Intrinsics for some of Cvt

While doing this I noticed that the conversion for int/fp was incorrect
in the slow path. I'll fix this in the original repo.

* Intrinsics for more Arithmetic instructions.

* Intrinsics for Vext

* Fix VEXT Intrinsic for double words.

* Use InsertPs to move scalar values.

* Cleanup, fix VPADD.f32 and VMIN signed integer.

* Cleanup, add SSE2 support for scalar insert.

Works similarly to the IR scalar insert, but obviously this one works
directly on V128.

* Minor cleanup.

* Enable intrinsic for FP64 to integer conversion.

* Address feedback apart from splitting out intrinsic float abs

Also: bad VREV encodings as undefined rather than throwing in translation.

* Move float abs to helper, fix bug with cvt

* Rename opc2 & 3 to match A32 docs, use ArgumentOutOfRangeException appropriately.

* Get name of variable at compilation rather than string literal.

* Use correct double sign mask.
2020-03-05 11:41:33 +11:00

20 lines
726 B
C#

namespace ARMeilleure.Decoders
{
class OpCode32SimdRev : OpCode32SimdCmpZ
{
public OpCode32SimdRev(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
{
if (Opc + Size >= 3)
{
Instruction = InstDescriptor.Undefined;
return;
}
// Currently, this instruction is treated as though it's OPCODE is the true size,
// which lets us deal with reversing vectors on a single element basis (eg. math magic an I64 rather than insert lots of I8s).
int tempSize = Size;
Size = 3 - Opc; // Op 0 is 64 bit, 1 is 32 and so on.
Opc = tempSize;
}
}
}