mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-08-19 23:28:42 +02:00
b9f1ff3c77
* Implemented in IR the managed methods of the Saturating region ... ... of the SoftFallback class (the SatQ ones). The need to natively manage the Fpcr and Fpsr system registers is still a fact. Contributes to https://github.com/Ryujinx/Ryujinx/issues/2917 ; I will open another PR to implement in Intrinsics-branchless the methods of the Saturation region as well (the SatXXXToXXX ones). All instructions involved have been tested locally in both release and debug modes, in both lowcq and highcq. * Ptc.InternalVersion = 3665 * Addressed PR feedback. * Implemented in IR the managed methods of the ShlReg region of the SoftFallback class. It also includes the last two SatQ ones (following up on https://github.com/Ryujinx/Ryujinx/pull/3665). All instructions involved have been tested locally in both release and debug modes, in both lowcq and highcq. * Update InstEmitSimdHelper.cs
1285 lines
42 KiB
C#
1285 lines
42 KiB
C#
// https://github.com/intel/ARM_NEON_2_x86_SSE/blob/master/NEON_2_SSE.h
|
|
|
|
using ARMeilleure.Decoders;
|
|
using ARMeilleure.IntermediateRepresentation;
|
|
using ARMeilleure.Translation;
|
|
using System;
|
|
using System.Diagnostics;
|
|
using System.Reflection;
|
|
|
|
using static ARMeilleure.Instructions.InstEmitHelper;
|
|
using static ARMeilleure.Instructions.InstEmitSimdHelper;
|
|
using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
|
|
|
|
namespace ARMeilleure.Instructions
|
|
{
|
|
using Func2I = Func<Operand, Operand, Operand>;
|
|
|
|
static partial class InstEmit
|
|
{
|
|
#region "Masks"
|
|
private static readonly long[] _masks_SliSri = new long[] // Replication masks.
|
|
{
|
|
0x0101010101010101L, 0x0001000100010001L, 0x0000000100000001L, 0x0000000000000001L
|
|
};
|
|
#endregion
|
|
|
|
public static void Rshrn_V(ArmEmitterContext context)
|
|
{
|
|
if (Optimizations.UseSsse3)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
int shift = GetImmShr(op);
|
|
|
|
long roundConst = 1L << (shift - 1);
|
|
|
|
Operand d = GetVec(op.Rd);
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
Operand dLow = context.VectorZeroUpper64(d);
|
|
|
|
Operand mask = default;
|
|
|
|
switch (op.Size + 1)
|
|
{
|
|
case 1: mask = X86GetAllElements(context, (int)roundConst * 0x00010001); break;
|
|
case 2: mask = X86GetAllElements(context, (int)roundConst); break;
|
|
case 3: mask = X86GetAllElements(context, roundConst); break;
|
|
}
|
|
|
|
Intrinsic addInst = X86PaddInstruction[op.Size + 1];
|
|
|
|
Operand res = context.AddIntrinsic(addInst, n, mask);
|
|
|
|
Intrinsic srlInst = X86PsrlInstruction[op.Size + 1];
|
|
|
|
res = context.AddIntrinsic(srlInst, res, Const(shift));
|
|
|
|
Operand mask2 = X86GetAllElements(context, EvenMasks[op.Size]);
|
|
|
|
res = context.AddIntrinsic(Intrinsic.X86Pshufb, res, mask2);
|
|
|
|
Intrinsic movInst = op.RegisterSize == RegisterSize.Simd128
|
|
? Intrinsic.X86Movlhps
|
|
: Intrinsic.X86Movhlps;
|
|
|
|
res = context.AddIntrinsic(movInst, dLow, res);
|
|
|
|
context.Copy(d, res);
|
|
}
|
|
else
|
|
{
|
|
EmitVectorShrImmNarrowOpZx(context, round: true);
|
|
}
|
|
}
|
|
|
|
public static void Shl_S(ArmEmitterContext context)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
int shift = GetImmShl(op);
|
|
|
|
EmitScalarUnaryOpZx(context, (op1) => context.ShiftLeft(op1, Const(shift)));
|
|
}
|
|
|
|
public static void Shl_V(ArmEmitterContext context)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
int shift = GetImmShl(op);
|
|
|
|
if (Optimizations.UseSse2 && op.Size > 0)
|
|
{
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
Intrinsic sllInst = X86PsllInstruction[op.Size];
|
|
|
|
Operand res = context.AddIntrinsic(sllInst, n, Const(shift));
|
|
|
|
if (op.RegisterSize == RegisterSize.Simd64)
|
|
{
|
|
res = context.VectorZeroUpper64(res);
|
|
}
|
|
|
|
context.Copy(GetVec(op.Rd), res);
|
|
}
|
|
else
|
|
{
|
|
EmitVectorUnaryOpZx(context, (op1) => context.ShiftLeft(op1, Const(shift)));
|
|
}
|
|
}
|
|
|
|
public static void Shll_V(ArmEmitterContext context)
|
|
{
|
|
OpCodeSimd op = (OpCodeSimd)context.CurrOp;
|
|
|
|
int shift = 8 << op.Size;
|
|
|
|
if (Optimizations.UseSse41)
|
|
{
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
if (op.RegisterSize == RegisterSize.Simd128)
|
|
{
|
|
n = context.AddIntrinsic(Intrinsic.X86Psrldq, n, Const(8));
|
|
}
|
|
|
|
Intrinsic movsxInst = X86PmovsxInstruction[op.Size];
|
|
|
|
Operand res = context.AddIntrinsic(movsxInst, n);
|
|
|
|
Intrinsic sllInst = X86PsllInstruction[op.Size + 1];
|
|
|
|
res = context.AddIntrinsic(sllInst, res, Const(shift));
|
|
|
|
context.Copy(GetVec(op.Rd), res);
|
|
}
|
|
else
|
|
{
|
|
EmitVectorShImmWidenBinaryZx(context, (op1, op2) => context.ShiftLeft(op1, op2), shift);
|
|
}
|
|
}
|
|
|
|
public static void Shrn_V(ArmEmitterContext context)
|
|
{
|
|
if (Optimizations.UseSsse3)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
int shift = GetImmShr(op);
|
|
|
|
Operand d = GetVec(op.Rd);
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
Operand dLow = context.VectorZeroUpper64(d);
|
|
|
|
Intrinsic srlInst = X86PsrlInstruction[op.Size + 1];
|
|
|
|
Operand nShifted = context.AddIntrinsic(srlInst, n, Const(shift));
|
|
|
|
Operand mask = X86GetAllElements(context, EvenMasks[op.Size]);
|
|
|
|
Operand res = context.AddIntrinsic(Intrinsic.X86Pshufb, nShifted, mask);
|
|
|
|
Intrinsic movInst = op.RegisterSize == RegisterSize.Simd128
|
|
? Intrinsic.X86Movlhps
|
|
: Intrinsic.X86Movhlps;
|
|
|
|
res = context.AddIntrinsic(movInst, dLow, res);
|
|
|
|
context.Copy(d, res);
|
|
}
|
|
else
|
|
{
|
|
EmitVectorShrImmNarrowOpZx(context, round: false);
|
|
}
|
|
}
|
|
|
|
public static void Sli_S(ArmEmitterContext context)
|
|
{
|
|
EmitSli(context, scalar: true);
|
|
}
|
|
|
|
public static void Sli_V(ArmEmitterContext context)
|
|
{
|
|
EmitSli(context, scalar: false);
|
|
}
|
|
|
|
public static void Sqrshl_V(ArmEmitterContext context)
|
|
{
|
|
EmitShlRegOp(context, ShlRegFlags.Signed | ShlRegFlags.Round | ShlRegFlags.Saturating);
|
|
}
|
|
|
|
public static void Sqrshrn_S(ArmEmitterContext context)
|
|
{
|
|
EmitRoundShrImmSaturatingNarrowOp(context, ShrImmSaturatingNarrowFlags.ScalarSxSx);
|
|
}
|
|
|
|
public static void Sqrshrn_V(ArmEmitterContext context)
|
|
{
|
|
EmitRoundShrImmSaturatingNarrowOp(context, ShrImmSaturatingNarrowFlags.VectorSxSx);
|
|
}
|
|
|
|
public static void Sqrshrun_S(ArmEmitterContext context)
|
|
{
|
|
EmitRoundShrImmSaturatingNarrowOp(context, ShrImmSaturatingNarrowFlags.ScalarSxZx);
|
|
}
|
|
|
|
public static void Sqrshrun_V(ArmEmitterContext context)
|
|
{
|
|
EmitRoundShrImmSaturatingNarrowOp(context, ShrImmSaturatingNarrowFlags.VectorSxZx);
|
|
}
|
|
|
|
public static void Sqshl_V(ArmEmitterContext context)
|
|
{
|
|
EmitShlRegOp(context, ShlRegFlags.Signed | ShlRegFlags.Saturating);
|
|
}
|
|
|
|
public static void Sqshrn_S(ArmEmitterContext context)
|
|
{
|
|
EmitShrImmSaturatingNarrowOp(context, ShrImmSaturatingNarrowFlags.ScalarSxSx);
|
|
}
|
|
|
|
public static void Sqshrn_V(ArmEmitterContext context)
|
|
{
|
|
EmitShrImmSaturatingNarrowOp(context, ShrImmSaturatingNarrowFlags.VectorSxSx);
|
|
}
|
|
|
|
public static void Sqshrun_S(ArmEmitterContext context)
|
|
{
|
|
EmitShrImmSaturatingNarrowOp(context, ShrImmSaturatingNarrowFlags.ScalarSxZx);
|
|
}
|
|
|
|
public static void Sqshrun_V(ArmEmitterContext context)
|
|
{
|
|
EmitShrImmSaturatingNarrowOp(context, ShrImmSaturatingNarrowFlags.VectorSxZx);
|
|
}
|
|
|
|
public static void Sri_S(ArmEmitterContext context)
|
|
{
|
|
EmitSri(context, scalar: true);
|
|
}
|
|
|
|
public static void Sri_V(ArmEmitterContext context)
|
|
{
|
|
EmitSri(context, scalar: false);
|
|
}
|
|
|
|
public static void Srshl_V(ArmEmitterContext context)
|
|
{
|
|
EmitShlRegOp(context, ShlRegFlags.Signed | ShlRegFlags.Round);
|
|
}
|
|
|
|
public static void Srshr_S(ArmEmitterContext context)
|
|
{
|
|
EmitScalarShrImmOpSx(context, ShrImmFlags.Round);
|
|
}
|
|
|
|
public static void Srshr_V(ArmEmitterContext context)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
if (Optimizations.UseSse2 && op.Size > 0 && op.Size < 3)
|
|
{
|
|
int shift = GetImmShr(op);
|
|
int eSize = 8 << op.Size;
|
|
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
Intrinsic sllInst = X86PsllInstruction[op.Size];
|
|
|
|
Operand res = context.AddIntrinsic(sllInst, n, Const(eSize - shift));
|
|
|
|
Intrinsic srlInst = X86PsrlInstruction[op.Size];
|
|
|
|
res = context.AddIntrinsic(srlInst, res, Const(eSize - 1));
|
|
|
|
Intrinsic sraInst = X86PsraInstruction[op.Size];
|
|
|
|
Operand nSra = context.AddIntrinsic(sraInst, n, Const(shift));
|
|
|
|
Intrinsic addInst = X86PaddInstruction[op.Size];
|
|
|
|
res = context.AddIntrinsic(addInst, res, nSra);
|
|
|
|
if (op.RegisterSize == RegisterSize.Simd64)
|
|
{
|
|
res = context.VectorZeroUpper64(res);
|
|
}
|
|
|
|
context.Copy(GetVec(op.Rd), res);
|
|
}
|
|
else
|
|
{
|
|
EmitVectorShrImmOpSx(context, ShrImmFlags.Round);
|
|
}
|
|
}
|
|
|
|
public static void Srsra_S(ArmEmitterContext context)
|
|
{
|
|
EmitScalarShrImmOpSx(context, ShrImmFlags.Round | ShrImmFlags.Accumulate);
|
|
}
|
|
|
|
public static void Srsra_V(ArmEmitterContext context)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
if (Optimizations.UseSse2 && op.Size > 0 && op.Size < 3)
|
|
{
|
|
int shift = GetImmShr(op);
|
|
int eSize = 8 << op.Size;
|
|
|
|
Operand d = GetVec(op.Rd);
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
Intrinsic sllInst = X86PsllInstruction[op.Size];
|
|
|
|
Operand res = context.AddIntrinsic(sllInst, n, Const(eSize - shift));
|
|
|
|
Intrinsic srlInst = X86PsrlInstruction[op.Size];
|
|
|
|
res = context.AddIntrinsic(srlInst, res, Const(eSize - 1));
|
|
|
|
Intrinsic sraInst = X86PsraInstruction[op.Size];
|
|
|
|
Operand nSra = context.AddIntrinsic(sraInst, n, Const(shift));
|
|
|
|
Intrinsic addInst = X86PaddInstruction[op.Size];
|
|
|
|
res = context.AddIntrinsic(addInst, res, nSra);
|
|
res = context.AddIntrinsic(addInst, res, d);
|
|
|
|
if (op.RegisterSize == RegisterSize.Simd64)
|
|
{
|
|
res = context.VectorZeroUpper64(res);
|
|
}
|
|
|
|
context.Copy(d, res);
|
|
}
|
|
else
|
|
{
|
|
EmitVectorShrImmOpSx(context, ShrImmFlags.Round | ShrImmFlags.Accumulate);
|
|
}
|
|
}
|
|
|
|
public static void Sshl_S(ArmEmitterContext context)
|
|
{
|
|
EmitShlRegOp(context, ShlRegFlags.Scalar | ShlRegFlags.Signed);
|
|
}
|
|
|
|
public static void Sshl_V(ArmEmitterContext context)
|
|
{
|
|
EmitShlRegOp(context, ShlRegFlags.Signed);
|
|
}
|
|
|
|
public static void Sshll_V(ArmEmitterContext context)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
int shift = GetImmShl(op);
|
|
|
|
if (Optimizations.UseSse41)
|
|
{
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
if (op.RegisterSize == RegisterSize.Simd128)
|
|
{
|
|
n = context.AddIntrinsic(Intrinsic.X86Psrldq, n, Const(8));
|
|
}
|
|
|
|
Intrinsic movsxInst = X86PmovsxInstruction[op.Size];
|
|
|
|
Operand res = context.AddIntrinsic(movsxInst, n);
|
|
|
|
if (shift != 0)
|
|
{
|
|
Intrinsic sllInst = X86PsllInstruction[op.Size + 1];
|
|
|
|
res = context.AddIntrinsic(sllInst, res, Const(shift));
|
|
}
|
|
|
|
context.Copy(GetVec(op.Rd), res);
|
|
}
|
|
else
|
|
{
|
|
EmitVectorShImmWidenBinarySx(context, (op1, op2) => context.ShiftLeft(op1, op2), shift);
|
|
}
|
|
}
|
|
|
|
public static void Sshr_S(ArmEmitterContext context)
|
|
{
|
|
EmitShrImmOp(context, ShrImmFlags.ScalarSx);
|
|
}
|
|
|
|
public static void Sshr_V(ArmEmitterContext context)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
if (Optimizations.UseSse2 && op.Size > 0 && op.Size < 3)
|
|
{
|
|
int shift = GetImmShr(op);
|
|
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
Intrinsic sraInst = X86PsraInstruction[op.Size];
|
|
|
|
Operand res = context.AddIntrinsic(sraInst, n, Const(shift));
|
|
|
|
if (op.RegisterSize == RegisterSize.Simd64)
|
|
{
|
|
res = context.VectorZeroUpper64(res);
|
|
}
|
|
|
|
context.Copy(GetVec(op.Rd), res);
|
|
}
|
|
else
|
|
{
|
|
EmitShrImmOp(context, ShrImmFlags.VectorSx);
|
|
}
|
|
}
|
|
|
|
public static void Ssra_S(ArmEmitterContext context)
|
|
{
|
|
EmitScalarShrImmOpSx(context, ShrImmFlags.Accumulate);
|
|
}
|
|
|
|
public static void Ssra_V(ArmEmitterContext context)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
if (Optimizations.UseSse2 && op.Size > 0 && op.Size < 3)
|
|
{
|
|
int shift = GetImmShr(op);
|
|
|
|
Operand d = GetVec(op.Rd);
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
Intrinsic sraInst = X86PsraInstruction[op.Size];
|
|
|
|
Operand res = context.AddIntrinsic(sraInst, n, Const(shift));
|
|
|
|
Intrinsic addInst = X86PaddInstruction[op.Size];
|
|
|
|
res = context.AddIntrinsic(addInst, res, d);
|
|
|
|
if (op.RegisterSize == RegisterSize.Simd64)
|
|
{
|
|
res = context.VectorZeroUpper64(res);
|
|
}
|
|
|
|
context.Copy(d, res);
|
|
}
|
|
else
|
|
{
|
|
EmitVectorShrImmOpSx(context, ShrImmFlags.Accumulate);
|
|
}
|
|
}
|
|
|
|
public static void Uqrshl_V(ArmEmitterContext context)
|
|
{
|
|
EmitShlRegOp(context, ShlRegFlags.Round | ShlRegFlags.Saturating);
|
|
}
|
|
|
|
public static void Uqrshrn_S(ArmEmitterContext context)
|
|
{
|
|
EmitRoundShrImmSaturatingNarrowOp(context, ShrImmSaturatingNarrowFlags.ScalarZxZx);
|
|
}
|
|
|
|
public static void Uqrshrn_V(ArmEmitterContext context)
|
|
{
|
|
EmitRoundShrImmSaturatingNarrowOp(context, ShrImmSaturatingNarrowFlags.VectorZxZx);
|
|
}
|
|
|
|
public static void Uqshl_V(ArmEmitterContext context)
|
|
{
|
|
EmitShlRegOp(context, ShlRegFlags.Saturating);
|
|
}
|
|
|
|
public static void Uqshrn_S(ArmEmitterContext context)
|
|
{
|
|
EmitShrImmSaturatingNarrowOp(context, ShrImmSaturatingNarrowFlags.ScalarZxZx);
|
|
}
|
|
|
|
public static void Uqshrn_V(ArmEmitterContext context)
|
|
{
|
|
EmitShrImmSaturatingNarrowOp(context, ShrImmSaturatingNarrowFlags.VectorZxZx);
|
|
}
|
|
|
|
public static void Urshl_V(ArmEmitterContext context)
|
|
{
|
|
EmitShlRegOp(context, ShlRegFlags.Round);
|
|
}
|
|
|
|
public static void Urshr_S(ArmEmitterContext context)
|
|
{
|
|
EmitScalarShrImmOpZx(context, ShrImmFlags.Round);
|
|
}
|
|
|
|
public static void Urshr_V(ArmEmitterContext context)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
if (Optimizations.UseSse2 && op.Size > 0)
|
|
{
|
|
int shift = GetImmShr(op);
|
|
int eSize = 8 << op.Size;
|
|
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
Intrinsic sllInst = X86PsllInstruction[op.Size];
|
|
|
|
Operand res = context.AddIntrinsic(sllInst, n, Const(eSize - shift));
|
|
|
|
Intrinsic srlInst = X86PsrlInstruction[op.Size];
|
|
|
|
res = context.AddIntrinsic(srlInst, res, Const(eSize - 1));
|
|
|
|
Operand nSrl = context.AddIntrinsic(srlInst, n, Const(shift));
|
|
|
|
Intrinsic addInst = X86PaddInstruction[op.Size];
|
|
|
|
res = context.AddIntrinsic(addInst, res, nSrl);
|
|
|
|
if (op.RegisterSize == RegisterSize.Simd64)
|
|
{
|
|
res = context.VectorZeroUpper64(res);
|
|
}
|
|
|
|
context.Copy(GetVec(op.Rd), res);
|
|
}
|
|
else
|
|
{
|
|
EmitVectorShrImmOpZx(context, ShrImmFlags.Round);
|
|
}
|
|
}
|
|
|
|
public static void Ursra_S(ArmEmitterContext context)
|
|
{
|
|
EmitScalarShrImmOpZx(context, ShrImmFlags.Round | ShrImmFlags.Accumulate);
|
|
}
|
|
|
|
public static void Ursra_V(ArmEmitterContext context)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
if (Optimizations.UseSse2 && op.Size > 0)
|
|
{
|
|
int shift = GetImmShr(op);
|
|
int eSize = 8 << op.Size;
|
|
|
|
Operand d = GetVec(op.Rd);
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
Intrinsic sllInst = X86PsllInstruction[op.Size];
|
|
|
|
Operand res = context.AddIntrinsic(sllInst, n, Const(eSize - shift));
|
|
|
|
Intrinsic srlInst = X86PsrlInstruction[op.Size];
|
|
|
|
res = context.AddIntrinsic(srlInst, res, Const(eSize - 1));
|
|
|
|
Operand nSrl = context.AddIntrinsic(srlInst, n, Const(shift));
|
|
|
|
Intrinsic addInst = X86PaddInstruction[op.Size];
|
|
|
|
res = context.AddIntrinsic(addInst, res, nSrl);
|
|
res = context.AddIntrinsic(addInst, res, d);
|
|
|
|
if (op.RegisterSize == RegisterSize.Simd64)
|
|
{
|
|
res = context.VectorZeroUpper64(res);
|
|
}
|
|
|
|
context.Copy(d, res);
|
|
}
|
|
else
|
|
{
|
|
EmitVectorShrImmOpZx(context, ShrImmFlags.Round | ShrImmFlags.Accumulate);
|
|
}
|
|
}
|
|
|
|
public static void Ushl_S(ArmEmitterContext context)
|
|
{
|
|
EmitShlRegOp(context, ShlRegFlags.Scalar);
|
|
}
|
|
|
|
public static void Ushl_V(ArmEmitterContext context)
|
|
{
|
|
EmitShlRegOp(context, ShlRegFlags.None);
|
|
}
|
|
|
|
public static void Ushll_V(ArmEmitterContext context)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
int shift = GetImmShl(op);
|
|
|
|
if (Optimizations.UseSse41)
|
|
{
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
if (op.RegisterSize == RegisterSize.Simd128)
|
|
{
|
|
n = context.AddIntrinsic(Intrinsic.X86Psrldq, n, Const(8));
|
|
}
|
|
|
|
Intrinsic movzxInst = X86PmovzxInstruction[op.Size];
|
|
|
|
Operand res = context.AddIntrinsic(movzxInst, n);
|
|
|
|
if (shift != 0)
|
|
{
|
|
Intrinsic sllInst = X86PsllInstruction[op.Size + 1];
|
|
|
|
res = context.AddIntrinsic(sllInst, res, Const(shift));
|
|
}
|
|
|
|
context.Copy(GetVec(op.Rd), res);
|
|
}
|
|
else
|
|
{
|
|
EmitVectorShImmWidenBinaryZx(context, (op1, op2) => context.ShiftLeft(op1, op2), shift);
|
|
}
|
|
}
|
|
|
|
public static void Ushr_S(ArmEmitterContext context)
|
|
{
|
|
EmitShrImmOp(context, ShrImmFlags.ScalarZx);
|
|
}
|
|
|
|
public static void Ushr_V(ArmEmitterContext context)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
if (Optimizations.UseSse2 && op.Size > 0)
|
|
{
|
|
int shift = GetImmShr(op);
|
|
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
Intrinsic srlInst = X86PsrlInstruction[op.Size];
|
|
|
|
Operand res = context.AddIntrinsic(srlInst, n, Const(shift));
|
|
|
|
if (op.RegisterSize == RegisterSize.Simd64)
|
|
{
|
|
res = context.VectorZeroUpper64(res);
|
|
}
|
|
|
|
context.Copy(GetVec(op.Rd), res);
|
|
}
|
|
else
|
|
{
|
|
EmitShrImmOp(context, ShrImmFlags.VectorZx);
|
|
}
|
|
}
|
|
|
|
public static void Usra_S(ArmEmitterContext context)
|
|
{
|
|
EmitScalarShrImmOpZx(context, ShrImmFlags.Accumulate);
|
|
}
|
|
|
|
public static void Usra_V(ArmEmitterContext context)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
if (Optimizations.UseSse2 && op.Size > 0)
|
|
{
|
|
int shift = GetImmShr(op);
|
|
|
|
Operand d = GetVec(op.Rd);
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
Intrinsic srlInst = X86PsrlInstruction[op.Size];
|
|
|
|
Operand res = context.AddIntrinsic(srlInst, n, Const(shift));
|
|
|
|
Intrinsic addInst = X86PaddInstruction[op.Size];
|
|
|
|
res = context.AddIntrinsic(addInst, res, d);
|
|
|
|
if (op.RegisterSize == RegisterSize.Simd64)
|
|
{
|
|
res = context.VectorZeroUpper64(res);
|
|
}
|
|
|
|
context.Copy(d, res);
|
|
}
|
|
else
|
|
{
|
|
EmitVectorShrImmOpZx(context, ShrImmFlags.Accumulate);
|
|
}
|
|
}
|
|
|
|
[Flags]
|
|
private enum ShrImmFlags
|
|
{
|
|
Scalar = 1 << 0,
|
|
Signed = 1 << 1,
|
|
|
|
Round = 1 << 2,
|
|
Accumulate = 1 << 3,
|
|
|
|
ScalarSx = Scalar | Signed,
|
|
ScalarZx = Scalar,
|
|
|
|
VectorSx = Signed,
|
|
VectorZx = 0
|
|
}
|
|
|
|
private static void EmitScalarShrImmOpSx(ArmEmitterContext context, ShrImmFlags flags)
|
|
{
|
|
EmitShrImmOp(context, ShrImmFlags.ScalarSx | flags);
|
|
}
|
|
|
|
private static void EmitScalarShrImmOpZx(ArmEmitterContext context, ShrImmFlags flags)
|
|
{
|
|
EmitShrImmOp(context, ShrImmFlags.ScalarZx | flags);
|
|
}
|
|
|
|
private static void EmitVectorShrImmOpSx(ArmEmitterContext context, ShrImmFlags flags)
|
|
{
|
|
EmitShrImmOp(context, ShrImmFlags.VectorSx | flags);
|
|
}
|
|
|
|
private static void EmitVectorShrImmOpZx(ArmEmitterContext context, ShrImmFlags flags)
|
|
{
|
|
EmitShrImmOp(context, ShrImmFlags.VectorZx | flags);
|
|
}
|
|
|
|
private static void EmitShrImmOp(ArmEmitterContext context, ShrImmFlags flags)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
Operand res = context.VectorZero();
|
|
|
|
bool scalar = (flags & ShrImmFlags.Scalar) != 0;
|
|
bool signed = (flags & ShrImmFlags.Signed) != 0;
|
|
bool round = (flags & ShrImmFlags.Round) != 0;
|
|
bool accumulate = (flags & ShrImmFlags.Accumulate) != 0;
|
|
|
|
int shift = GetImmShr(op);
|
|
|
|
long roundConst = 1L << (shift - 1);
|
|
|
|
int elems = !scalar ? op.GetBytesCount() >> op.Size : 1;
|
|
|
|
for (int index = 0; index < elems; index++)
|
|
{
|
|
Operand e = EmitVectorExtract(context, op.Rn, index, op.Size, signed);
|
|
|
|
if (op.Size <= 2)
|
|
{
|
|
if (round)
|
|
{
|
|
e = context.Add(e, Const(roundConst));
|
|
}
|
|
|
|
e = signed ? context.ShiftRightSI(e, Const(shift)) : context.ShiftRightUI(e, Const(shift));
|
|
}
|
|
else /* if (op.Size == 3) */
|
|
{
|
|
e = EmitShrImm64(context, e, signed, round ? roundConst : 0L, shift);
|
|
}
|
|
|
|
if (accumulate)
|
|
{
|
|
Operand de = EmitVectorExtract(context, op.Rd, index, op.Size, signed);
|
|
|
|
e = context.Add(e, de);
|
|
}
|
|
|
|
res = EmitVectorInsert(context, res, e, index, op.Size);
|
|
}
|
|
|
|
context.Copy(GetVec(op.Rd), res);
|
|
}
|
|
|
|
private static void EmitVectorShrImmNarrowOpZx(ArmEmitterContext context, bool round)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
int shift = GetImmShr(op);
|
|
|
|
long roundConst = 1L << (shift - 1);
|
|
|
|
int elems = 8 >> op.Size;
|
|
|
|
int part = op.RegisterSize == RegisterSize.Simd128 ? elems : 0;
|
|
|
|
Operand d = GetVec(op.Rd);
|
|
|
|
Operand res = part == 0 ? context.VectorZero() : context.Copy(d);
|
|
|
|
for (int index = 0; index < elems; index++)
|
|
{
|
|
Operand e = EmitVectorExtractZx(context, op.Rn, index, op.Size + 1);
|
|
|
|
if (round)
|
|
{
|
|
e = context.Add(e, Const(roundConst));
|
|
}
|
|
|
|
e = context.ShiftRightUI(e, Const(shift));
|
|
|
|
res = EmitVectorInsert(context, res, e, part + index, op.Size);
|
|
}
|
|
|
|
context.Copy(d, res);
|
|
}
|
|
|
|
[Flags]
|
|
private enum ShrImmSaturatingNarrowFlags
|
|
{
|
|
Scalar = 1 << 0,
|
|
SignedSrc = 1 << 1,
|
|
SignedDst = 1 << 2,
|
|
|
|
Round = 1 << 3,
|
|
|
|
ScalarSxSx = Scalar | SignedSrc | SignedDst,
|
|
ScalarSxZx = Scalar | SignedSrc,
|
|
ScalarZxZx = Scalar,
|
|
|
|
VectorSxSx = SignedSrc | SignedDst,
|
|
VectorSxZx = SignedSrc,
|
|
VectorZxZx = 0
|
|
}
|
|
|
|
private static void EmitRoundShrImmSaturatingNarrowOp(ArmEmitterContext context, ShrImmSaturatingNarrowFlags flags)
|
|
{
|
|
EmitShrImmSaturatingNarrowOp(context, ShrImmSaturatingNarrowFlags.Round | flags);
|
|
}
|
|
|
|
private static void EmitShrImmSaturatingNarrowOp(ArmEmitterContext context, ShrImmSaturatingNarrowFlags flags)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
bool scalar = (flags & ShrImmSaturatingNarrowFlags.Scalar) != 0;
|
|
bool signedSrc = (flags & ShrImmSaturatingNarrowFlags.SignedSrc) != 0;
|
|
bool signedDst = (flags & ShrImmSaturatingNarrowFlags.SignedDst) != 0;
|
|
bool round = (flags & ShrImmSaturatingNarrowFlags.Round) != 0;
|
|
|
|
int shift = GetImmShr(op);
|
|
|
|
long roundConst = 1L << (shift - 1);
|
|
|
|
int elems = !scalar ? 8 >> op.Size : 1;
|
|
|
|
int part = !scalar && (op.RegisterSize == RegisterSize.Simd128) ? elems : 0;
|
|
|
|
Operand d = GetVec(op.Rd);
|
|
|
|
Operand res = part == 0 ? context.VectorZero() : context.Copy(d);
|
|
|
|
for (int index = 0; index < elems; index++)
|
|
{
|
|
Operand e = EmitVectorExtract(context, op.Rn, index, op.Size + 1, signedSrc);
|
|
|
|
if (op.Size <= 1 || !round)
|
|
{
|
|
if (round)
|
|
{
|
|
e = context.Add(e, Const(roundConst));
|
|
}
|
|
|
|
e = signedSrc ? context.ShiftRightSI(e, Const(shift)) : context.ShiftRightUI(e, Const(shift));
|
|
}
|
|
else /* if (op.Size == 2 && round) */
|
|
{
|
|
e = EmitShrImm64(context, e, signedSrc, roundConst, shift); // shift <= 32
|
|
}
|
|
|
|
e = signedSrc ? EmitSignedSrcSatQ(context, e, op.Size, signedDst) : EmitUnsignedSrcSatQ(context, e, op.Size, signedDst);
|
|
|
|
res = EmitVectorInsert(context, res, e, part + index, op.Size);
|
|
}
|
|
|
|
context.Copy(d, res);
|
|
}
|
|
|
|
// dst64 = (Int(src64, signed) + roundConst) >> shift;
|
|
private static Operand EmitShrImm64(
|
|
ArmEmitterContext context,
|
|
Operand value,
|
|
bool signed,
|
|
long roundConst,
|
|
int shift)
|
|
{
|
|
MethodInfo info = signed
|
|
? typeof(SoftFallback).GetMethod(nameof(SoftFallback.SignedShrImm64))
|
|
: typeof(SoftFallback).GetMethod(nameof(SoftFallback.UnsignedShrImm64));
|
|
|
|
return context.Call(info, value, Const(roundConst), Const(shift));
|
|
}
|
|
|
|
private static void EmitVectorShImmWidenBinarySx(ArmEmitterContext context, Func2I emit, int imm)
|
|
{
|
|
EmitVectorShImmWidenBinaryOp(context, emit, imm, signed: true);
|
|
}
|
|
|
|
private static void EmitVectorShImmWidenBinaryZx(ArmEmitterContext context, Func2I emit, int imm)
|
|
{
|
|
EmitVectorShImmWidenBinaryOp(context, emit, imm, signed: false);
|
|
}
|
|
|
|
private static void EmitVectorShImmWidenBinaryOp(ArmEmitterContext context, Func2I emit, int imm, bool signed)
|
|
{
|
|
OpCodeSimd op = (OpCodeSimd)context.CurrOp;
|
|
|
|
Operand res = context.VectorZero();
|
|
|
|
int elems = 8 >> op.Size;
|
|
|
|
int part = op.RegisterSize == RegisterSize.Simd128 ? elems : 0;
|
|
|
|
for (int index = 0; index < elems; index++)
|
|
{
|
|
Operand ne = EmitVectorExtract(context, op.Rn, part + index, op.Size, signed);
|
|
|
|
res = EmitVectorInsert(context, res, emit(ne, Const(imm)), index, op.Size + 1);
|
|
}
|
|
|
|
context.Copy(GetVec(op.Rd), res);
|
|
}
|
|
|
|
private static void EmitSli(ArmEmitterContext context, bool scalar)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
int shift = GetImmShl(op);
|
|
|
|
ulong mask = shift != 0 ? ulong.MaxValue >> (64 - shift) : 0UL;
|
|
|
|
if (Optimizations.UseSse2 && op.Size > 0)
|
|
{
|
|
Operand d = GetVec(op.Rd);
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
Intrinsic sllInst = X86PsllInstruction[op.Size];
|
|
|
|
Operand nShifted = context.AddIntrinsic(sllInst, n, Const(shift));
|
|
|
|
Operand dMask = X86GetAllElements(context, (long)mask * _masks_SliSri[op.Size]);
|
|
|
|
Operand dMasked = context.AddIntrinsic(Intrinsic.X86Pand, d, dMask);
|
|
|
|
Operand res = context.AddIntrinsic(Intrinsic.X86Por, nShifted, dMasked);
|
|
|
|
if ((op.RegisterSize == RegisterSize.Simd64) || scalar)
|
|
{
|
|
res = context.VectorZeroUpper64(res);
|
|
}
|
|
|
|
context.Copy(d, res);
|
|
}
|
|
else
|
|
{
|
|
Operand res = context.VectorZero();
|
|
|
|
int elems = !scalar ? op.GetBytesCount() >> op.Size : 1;
|
|
|
|
for (int index = 0; index < elems; index++)
|
|
{
|
|
Operand ne = EmitVectorExtractZx(context, op.Rn, index, op.Size);
|
|
|
|
Operand neShifted = context.ShiftLeft(ne, Const(shift));
|
|
|
|
Operand de = EmitVectorExtractZx(context, op.Rd, index, op.Size);
|
|
|
|
Operand deMasked = context.BitwiseAnd(de, Const(mask));
|
|
|
|
Operand e = context.BitwiseOr(neShifted, deMasked);
|
|
|
|
res = EmitVectorInsert(context, res, e, index, op.Size);
|
|
}
|
|
|
|
context.Copy(GetVec(op.Rd), res);
|
|
}
|
|
}
|
|
|
|
private static void EmitSri(ArmEmitterContext context, bool scalar)
|
|
{
|
|
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
|
|
|
|
int shift = GetImmShr(op);
|
|
int eSize = 8 << op.Size;
|
|
|
|
ulong mask = (ulong.MaxValue << (eSize - shift)) & (ulong.MaxValue >> (64 - eSize));
|
|
|
|
if (Optimizations.UseSse2 && op.Size > 0)
|
|
{
|
|
Operand d = GetVec(op.Rd);
|
|
Operand n = GetVec(op.Rn);
|
|
|
|
Intrinsic srlInst = X86PsrlInstruction[op.Size];
|
|
|
|
Operand nShifted = context.AddIntrinsic(srlInst, n, Const(shift));
|
|
|
|
Operand dMask = X86GetAllElements(context, (long)mask * _masks_SliSri[op.Size]);
|
|
|
|
Operand dMasked = context.AddIntrinsic(Intrinsic.X86Pand, d, dMask);
|
|
|
|
Operand res = context.AddIntrinsic(Intrinsic.X86Por, nShifted, dMasked);
|
|
|
|
if ((op.RegisterSize == RegisterSize.Simd64) || scalar)
|
|
{
|
|
res = context.VectorZeroUpper64(res);
|
|
}
|
|
|
|
context.Copy(d, res);
|
|
}
|
|
else
|
|
{
|
|
Operand res = context.VectorZero();
|
|
|
|
int elems = !scalar ? op.GetBytesCount() >> op.Size : 1;
|
|
|
|
for (int index = 0; index < elems; index++)
|
|
{
|
|
Operand ne = EmitVectorExtractZx(context, op.Rn, index, op.Size);
|
|
|
|
Operand neShifted = shift != 64 ? context.ShiftRightUI(ne, Const(shift)) : Const(0UL);
|
|
|
|
Operand de = EmitVectorExtractZx(context, op.Rd, index, op.Size);
|
|
|
|
Operand deMasked = context.BitwiseAnd(de, Const(mask));
|
|
|
|
Operand e = context.BitwiseOr(neShifted, deMasked);
|
|
|
|
res = EmitVectorInsert(context, res, e, index, op.Size);
|
|
}
|
|
|
|
context.Copy(GetVec(op.Rd), res);
|
|
}
|
|
}
|
|
|
|
[Flags]
|
|
private enum ShlRegFlags
|
|
{
|
|
None = 0,
|
|
Scalar = 1 << 0,
|
|
Signed = 1 << 1,
|
|
Round = 1 << 2,
|
|
Saturating = 1 << 3
|
|
}
|
|
|
|
private static void EmitShlRegOp(ArmEmitterContext context, ShlRegFlags flags = ShlRegFlags.None)
|
|
{
|
|
bool scalar = flags.HasFlag(ShlRegFlags.Scalar);
|
|
bool signed = flags.HasFlag(ShlRegFlags.Signed);
|
|
bool round = flags.HasFlag(ShlRegFlags.Round);
|
|
bool saturating = flags.HasFlag(ShlRegFlags.Saturating);
|
|
|
|
OpCodeSimdReg op = (OpCodeSimdReg)context.CurrOp;
|
|
|
|
Operand res = context.VectorZero();
|
|
|
|
int elems = !scalar ? op.GetBytesCount() >> op.Size : 1;
|
|
|
|
for (int index = 0; index < elems; index++)
|
|
{
|
|
Operand ne = EmitVectorExtract(context, op.Rn, index, op.Size, signed);
|
|
Operand me = EmitVectorExtractSx(context, op.Rm, index << op.Size, size: 0);
|
|
|
|
Operand e = !saturating
|
|
? EmitShlReg(context, ne, context.ConvertI64ToI32(me), round, op.Size, signed)
|
|
: EmitShlRegSatQ(context, ne, context.ConvertI64ToI32(me), round, op.Size, signed);
|
|
|
|
res = EmitVectorInsert(context, res, e, index, op.Size);
|
|
}
|
|
|
|
context.Copy(GetVec(op.Rd), res);
|
|
}
|
|
|
|
// long SignedShlReg(long op, int shiftLsB, bool round, int size);
|
|
// ulong UnsignedShlReg(ulong op, int shiftLsB, bool round, int size);
|
|
private static Operand EmitShlReg(ArmEmitterContext context, Operand op, Operand shiftLsB, bool round, int size, bool signed)
|
|
{
|
|
int eSize = 8 << size;
|
|
|
|
Debug.Assert(op.Type == OperandType.I64);
|
|
Debug.Assert(shiftLsB.Type == OperandType.I32);
|
|
Debug.Assert(eSize == 8 || eSize == 16 || eSize == 32 || eSize == 64);
|
|
|
|
Operand lbl1 = Label();
|
|
Operand lblEnd = Label();
|
|
|
|
Operand eSizeOp = Const(eSize);
|
|
Operand zero = Const(0);
|
|
Operand zeroL = Const(0L);
|
|
|
|
Operand res = context.Copy(context.AllocateLocal(OperandType.I64), op);
|
|
|
|
context.BranchIf(lbl1, shiftLsB, zero, Comparison.GreaterOrEqual);
|
|
context.Copy(res, signed
|
|
? EmitSignedShrReg(context, op, context.Negate(shiftLsB), round, eSize)
|
|
: EmitUnsignedShrReg(context, op, context.Negate(shiftLsB), round, eSize));
|
|
context.Branch(lblEnd);
|
|
|
|
context.MarkLabel(lbl1);
|
|
context.BranchIf(lblEnd, shiftLsB, zero, Comparison.LessOrEqual);
|
|
Operand shl = context.ShiftLeft(op, shiftLsB);
|
|
Operand isGreaterOrEqual = context.ICompareGreaterOrEqual(shiftLsB, eSizeOp);
|
|
context.Copy(res, context.ConditionalSelect(isGreaterOrEqual, zeroL, shl));
|
|
context.Branch(lblEnd);
|
|
|
|
context.MarkLabel(lblEnd);
|
|
|
|
return res;
|
|
}
|
|
|
|
// long SignedShlRegSatQ(long op, int shiftLsB, bool round, int size);
|
|
// ulong UnsignedShlRegSatQ(ulong op, int shiftLsB, bool round, int size);
|
|
private static Operand EmitShlRegSatQ(ArmEmitterContext context, Operand op, Operand shiftLsB, bool round, int size, bool signed)
|
|
{
|
|
int eSize = 8 << size;
|
|
|
|
Debug.Assert(op.Type == OperandType.I64);
|
|
Debug.Assert(shiftLsB.Type == OperandType.I32);
|
|
Debug.Assert(eSize == 8 || eSize == 16 || eSize == 32 || eSize == 64);
|
|
|
|
Operand lbl1 = Label();
|
|
Operand lbl2 = Label();
|
|
Operand lblEnd = Label();
|
|
|
|
Operand eSizeOp = Const(eSize);
|
|
Operand zero = Const(0);
|
|
|
|
Operand res = context.Copy(context.AllocateLocal(OperandType.I64), op);
|
|
|
|
context.BranchIf(lbl1, shiftLsB, zero, Comparison.GreaterOrEqual);
|
|
context.Copy(res, signed
|
|
? EmitSignedShrReg(context, op, context.Negate(shiftLsB), round, eSize)
|
|
: EmitUnsignedShrReg(context, op, context.Negate(shiftLsB), round, eSize));
|
|
context.Branch(lblEnd);
|
|
|
|
context.MarkLabel(lbl1);
|
|
context.BranchIf(lblEnd, shiftLsB, zero, Comparison.LessOrEqual);
|
|
context.BranchIf(lbl2, shiftLsB, eSizeOp, Comparison.Less);
|
|
context.Copy(res, signed
|
|
? EmitSignedSignSatQ(context, op, size)
|
|
: EmitUnsignedSignSatQ(context, op, size));
|
|
context.Branch(lblEnd);
|
|
|
|
context.MarkLabel(lbl2);
|
|
Operand shl = context.ShiftLeft(op, shiftLsB);
|
|
if (eSize == 64)
|
|
{
|
|
Operand sarOrShr = signed
|
|
? context.ShiftRightSI(shl, shiftLsB)
|
|
: context.ShiftRightUI(shl, shiftLsB);
|
|
context.Copy(res, shl);
|
|
context.BranchIf(lblEnd, sarOrShr, op, Comparison.Equal);
|
|
context.Copy(res, signed
|
|
? EmitSignedSignSatQ(context, op, size)
|
|
: EmitUnsignedSignSatQ(context, op, size));
|
|
}
|
|
else
|
|
{
|
|
context.Copy(res, signed
|
|
? EmitSignedSrcSatQ(context, shl, size, signedDst: true)
|
|
: EmitUnsignedSrcSatQ(context, shl, size, signedDst: false));
|
|
}
|
|
context.Branch(lblEnd);
|
|
|
|
context.MarkLabel(lblEnd);
|
|
|
|
return res;
|
|
}
|
|
|
|
// shift := [1, 128]; eSize := {8, 16, 32, 64}.
|
|
// long SignedShrReg(long op, int shift, bool round, int eSize);
|
|
private static Operand EmitSignedShrReg(ArmEmitterContext context, Operand op, Operand shift, bool round, int eSize)
|
|
{
|
|
if (round)
|
|
{
|
|
Operand lblEnd = Label();
|
|
|
|
Operand eSizeOp = Const(eSize);
|
|
Operand zeroL = Const(0L);
|
|
Operand one = Const(1);
|
|
Operand oneL = Const(1L);
|
|
|
|
Operand res = context.Copy(context.AllocateLocal(OperandType.I64), zeroL);
|
|
|
|
context.BranchIf(lblEnd, shift, eSizeOp, Comparison.GreaterOrEqual);
|
|
Operand roundConst = context.ShiftLeft(oneL, context.Subtract(shift, one));
|
|
Operand add = context.Add(op, roundConst);
|
|
Operand sar = context.ShiftRightSI(add, shift);
|
|
if (eSize == 64)
|
|
{
|
|
Operand shr = context.ShiftRightUI(add, shift);
|
|
Operand left = context.BitwiseAnd(context.Negate(op), context.BitwiseExclusiveOr(op, add));
|
|
Operand isLess = context.ICompareLess(left, zeroL);
|
|
context.Copy(res, context.ConditionalSelect(isLess, shr, sar));
|
|
}
|
|
else
|
|
{
|
|
context.Copy(res, sar);
|
|
}
|
|
context.Branch(lblEnd);
|
|
|
|
context.MarkLabel(lblEnd);
|
|
|
|
return res;
|
|
}
|
|
else
|
|
{
|
|
Operand lblEnd = Label();
|
|
|
|
Operand eSizeOp = Const(eSize);
|
|
Operand zeroL = Const(0L);
|
|
Operand negOneL = Const(-1L);
|
|
|
|
Operand sar = context.ShiftRightSI(op, shift);
|
|
Operand res = context.Copy(context.AllocateLocal(OperandType.I64), sar);
|
|
|
|
context.BranchIf(lblEnd, shift, eSizeOp, Comparison.Less);
|
|
Operand isLess = context.ICompareLess(op, zeroL);
|
|
context.Copy(res, context.ConditionalSelect(isLess, negOneL, zeroL));
|
|
context.Branch(lblEnd);
|
|
|
|
context.MarkLabel(lblEnd);
|
|
|
|
return res;
|
|
}
|
|
}
|
|
|
|
// shift := [1, 128]; eSize := {8, 16, 32, 64}.
|
|
// ulong UnsignedShrReg(ulong op, int shift, bool round, int eSize);
|
|
private static Operand EmitUnsignedShrReg(ArmEmitterContext context, Operand op, Operand shift, bool round, int eSize)
|
|
{
|
|
if (round)
|
|
{
|
|
Operand lblEnd = Label();
|
|
|
|
Operand zeroUL = Const(0UL);
|
|
Operand one = Const(1);
|
|
Operand oneUL = Const(1UL);
|
|
Operand eSizeMaxOp = Const(64);
|
|
Operand oneShl63UL = Const(1UL << 63);
|
|
|
|
Operand res = context.Copy(context.AllocateLocal(OperandType.I64), zeroUL);
|
|
|
|
context.BranchIf(lblEnd, shift, eSizeMaxOp, Comparison.Greater);
|
|
Operand roundConst = context.ShiftLeft(oneUL, context.Subtract(shift, one));
|
|
Operand add = context.Add(op, roundConst);
|
|
Operand shr = context.ShiftRightUI(add, shift);
|
|
Operand isEqual = context.ICompareEqual(shift, eSizeMaxOp);
|
|
context.Copy(res, context.ConditionalSelect(isEqual, zeroUL, shr));
|
|
if (eSize == 64)
|
|
{
|
|
context.BranchIf(lblEnd, add, op, Comparison.GreaterOrEqualUI);
|
|
Operand right = context.BitwiseOr(shr, context.ShiftRightUI(oneShl63UL, context.Subtract(shift, one)));
|
|
context.Copy(res, context.ConditionalSelect(isEqual, oneUL, right));
|
|
}
|
|
context.Branch(lblEnd);
|
|
|
|
context.MarkLabel(lblEnd);
|
|
|
|
return res;
|
|
}
|
|
else
|
|
{
|
|
Operand lblEnd = Label();
|
|
|
|
Operand eSizeOp = Const(eSize);
|
|
Operand zeroUL = Const(0UL);
|
|
|
|
Operand shr = context.ShiftRightUI(op, shift);
|
|
Operand res = context.Copy(context.AllocateLocal(OperandType.I64), shr);
|
|
|
|
context.BranchIf(lblEnd, shift, eSizeOp, Comparison.Less);
|
|
context.Copy(res, zeroUL);
|
|
context.Branch(lblEnd);
|
|
|
|
context.MarkLabel(lblEnd);
|
|
|
|
return res;
|
|
}
|
|
}
|
|
}
|
|
}
|