mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-12-24 18:05:35 +00:00
Lop3Expression: Optimize expressions (#3184)
* lut3 * bugfixes * TruthTable * false/true -> 0/-1 * add or to expressions * fix inversions * increment cache version
This commit is contained in:
merry
GitHub
parent
6a9e9b5360
commit
a4e8bea866
|
|
@ -40,7 +40,7 @@ namespace Ryujinx.Graphics.Gpu.Shader
|
|||
/// <summary>
|
||||
/// Version of the codegen (to be changed when codegen or guest format change).
|
||||
/// </summary>
|
||||
private const ulong ShaderCodeGenVersion = 3054;
|
||||
private const ulong ShaderCodeGenVersion = 3184;
|
||||
|
||||
// Progress reporting helpers
|
||||
private volatile int _shaderCount;
|
||||
|
|
|
|||
|
|
@ -7,138 +7,135 @@ namespace Ryujinx.Graphics.Shader.Instructions
|
|||
{
|
||||
static class Lop3Expression
|
||||
{
|
||||
private enum TruthTable : byte
|
||||
{
|
||||
False = 0x00, // false
|
||||
True = 0xff, // true
|
||||
In = 0xf0, // a
|
||||
And2 = 0xc0, // a & b
|
||||
Or2 = 0xfc, // a | b
|
||||
Xor2 = 0x3c, // a ^ b
|
||||
And3 = 0x80, // a & b & c
|
||||
Or3 = 0xfe, // a | b | c
|
||||
XorAnd = 0x60, // a & (b ^ c)
|
||||
XorOr = 0xf6, // a | (b ^ c)
|
||||
OrAnd = 0xe0, // a & (b | c)
|
||||
AndOr = 0xf8, // a | (b & c)
|
||||
Onehot = 0x16, // (a & !b & !c) | (!a & b & !c) | (!a & !b & c) - Only one value is true.
|
||||
Majority = 0xe8, // Popcount(a, b, c) >= 2
|
||||
Gamble = 0x81, // (a & b & c) | (!a & !b & !c) - All on or all off
|
||||
InverseGamble = 0x7e, // Inverse of Gamble
|
||||
Dot = 0x1a, // a ^ (c | (a & b))
|
||||
Mux = 0xca, // a ? b : c
|
||||
AndXor = 0x78, // a ^ (b & c)
|
||||
OrXor = 0x1e, // a ^ (b | c)
|
||||
Xor3 = 0x96, // a ^ b ^ c
|
||||
}
|
||||
|
||||
public static Operand GetFromTruthTable(EmitterContext context, Operand srcA, Operand srcB, Operand srcC, int imm)
|
||||
{
|
||||
Operand expr = null;
|
||||
for (int i = 0; i < 0x40; i++)
|
||||
{
|
||||
TruthTable currImm = (TruthTable)imm;
|
||||
|
||||
// Handle some simple cases, or cases where
|
||||
// the KMap would yield poor results (like XORs).
|
||||
if (imm == 0x96 || imm == 0x69)
|
||||
Operand x = srcA;
|
||||
Operand y = srcB;
|
||||
Operand z = srcC;
|
||||
|
||||
if ((i & 0x01) != 0)
|
||||
{
|
||||
// XOR (0x96) and XNOR (0x69).
|
||||
if (imm == 0x69)
|
||||
{
|
||||
srcA = context.BitwiseNot(srcA);
|
||||
(x, y) = (y, x);
|
||||
currImm = PermuteTable(currImm, 7, 6, 3, 2, 5, 4, 1, 0);
|
||||
}
|
||||
|
||||
expr = context.BitwiseExclusiveOr(srcA, srcB);
|
||||
expr = context.BitwiseExclusiveOr(expr, srcC);
|
||||
|
||||
return expr;
|
||||
}
|
||||
else if (imm == 0)
|
||||
if ((i & 0x02) != 0)
|
||||
{
|
||||
// Always false.
|
||||
return Const(IrConsts.False);
|
||||
}
|
||||
else if (imm == 0xff)
|
||||
{
|
||||
// Always true.
|
||||
return Const(IrConsts.True);
|
||||
(x, z) = (z, x);
|
||||
currImm = PermuteTable(currImm, 7, 3, 5, 1, 6, 2, 4, 0);
|
||||
}
|
||||
|
||||
int map;
|
||||
|
||||
// Encode into gray code.
|
||||
map = ((imm >> 0) & 1) << 0;
|
||||
map |= ((imm >> 1) & 1) << 4;
|
||||
map |= ((imm >> 2) & 1) << 1;
|
||||
map |= ((imm >> 3) & 1) << 5;
|
||||
map |= ((imm >> 4) & 1) << 3;
|
||||
map |= ((imm >> 5) & 1) << 7;
|
||||
map |= ((imm >> 6) & 1) << 2;
|
||||
map |= ((imm >> 7) & 1) << 6;
|
||||
|
||||
// Solve KMap, get sum of products.
|
||||
int visited = 0;
|
||||
|
||||
for (int index = 0; index < 8 && visited != 0xff; index++)
|
||||
if ((i & 0x04) != 0)
|
||||
{
|
||||
if ((map & (1 << index)) == 0)
|
||||
{
|
||||
continue;
|
||||
(y, z) = (z, y);
|
||||
currImm = PermuteTable(currImm, 7, 5, 6, 4, 3, 1, 2, 0);
|
||||
}
|
||||
|
||||
int mask = 0;
|
||||
|
||||
for (int mSize = 4; mSize != 0; mSize >>= 1)
|
||||
if ((i & 0x08) != 0)
|
||||
{
|
||||
mask = RotateLeft4((1 << mSize) - 1, index & 3) << (index & 4);
|
||||
x = context.BitwiseNot(x);
|
||||
currImm = PermuteTable(currImm, 3, 2, 1, 0, 7, 6, 5, 4);
|
||||
}
|
||||
|
||||
if ((map & mask) == mask)
|
||||
if ((i & 0x10) != 0)
|
||||
{
|
||||
break;
|
||||
y = context.BitwiseNot(y);
|
||||
currImm = PermuteTable(currImm, 5, 4, 7, 6, 1, 0, 3, 2);
|
||||
}
|
||||
|
||||
if ((i & 0x20) != 0)
|
||||
{
|
||||
z = context.BitwiseNot(z);
|
||||
currImm = PermuteTable(currImm, 6, 7, 4, 5, 2, 3, 0, 1);
|
||||
}
|
||||
|
||||
Operand result = GetExpr(currImm, context, x, y, z);
|
||||
if (result != null)
|
||||
{
|
||||
return result;
|
||||
}
|
||||
|
||||
Operand notResult = GetExpr((TruthTable)((~(int)currImm) & 0xff), context, x, y, z);
|
||||
if (notResult != null)
|
||||
{
|
||||
return context.BitwiseNot(notResult);
|
||||
}
|
||||
}
|
||||
|
||||
// The mask should wrap, if we are on the high row, shift to low etc.
|
||||
int mask2 = (index & 4) != 0 ? mask >> 4 : mask << 4;
|
||||
return null;
|
||||
}
|
||||
|
||||
if ((map & mask2) == mask2)
|
||||
private static Operand GetExpr(TruthTable imm, EmitterContext context, Operand x, Operand y, Operand z)
|
||||
{
|
||||
mask |= mask2;
|
||||
}
|
||||
|
||||
if ((mask & visited) == mask)
|
||||
return imm switch
|
||||
{
|
||||
continue;
|
||||
TruthTable.False => Const(0),
|
||||
TruthTable.True => Const(-1),
|
||||
TruthTable.In => x,
|
||||
TruthTable.And2 => context.BitwiseAnd(x, y),
|
||||
TruthTable.Or2 => context.BitwiseOr(x, y),
|
||||
TruthTable.Xor2 => context.BitwiseExclusiveOr(x, y),
|
||||
TruthTable.And3 => context.BitwiseAnd(x, context.BitwiseAnd(y, z)),
|
||||
TruthTable.Or3 => context.BitwiseOr(x, context.BitwiseOr(y, z)),
|
||||
TruthTable.XorAnd => context.BitwiseAnd(x, context.BitwiseExclusiveOr(y, z)),
|
||||
TruthTable.XorOr => context.BitwiseOr(x, context.BitwiseExclusiveOr(y, z)),
|
||||
TruthTable.OrAnd => context.BitwiseAnd(x, context.BitwiseOr(y, z)),
|
||||
TruthTable.AndOr => context.BitwiseOr(x, context.BitwiseAnd(y, z)),
|
||||
TruthTable.Onehot => context.BitwiseExclusiveOr(context.BitwiseOr(x, y), context.BitwiseOr(z, context.BitwiseAnd(x, y))),
|
||||
TruthTable.Majority => context.BitwiseAnd(context.BitwiseOr(x, y), context.BitwiseOr(z, context.BitwiseAnd(x, y))),
|
||||
TruthTable.InverseGamble => context.BitwiseOr(context.BitwiseExclusiveOr(x, y), context.BitwiseExclusiveOr(x, z)),
|
||||
TruthTable.Dot => context.BitwiseAnd(context.BitwiseExclusiveOr(x, z), context.BitwiseOr(context.BitwiseNot(y), z)),
|
||||
TruthTable.Mux => context.BitwiseOr(context.BitwiseAnd(x, y), context.BitwiseAnd(context.BitwiseNot(x), z)),
|
||||
TruthTable.AndXor => context.BitwiseExclusiveOr(x, context.BitwiseAnd(y, z)),
|
||||
TruthTable.OrXor => context.BitwiseExclusiveOr(x, context.BitwiseOr(y, z)),
|
||||
TruthTable.Xor3 => context.BitwiseExclusiveOr(x, context.BitwiseExclusiveOr(y, z)),
|
||||
_ => null
|
||||
};
|
||||
}
|
||||
|
||||
bool notA = (mask & 0x33) != 0;
|
||||
bool notB = (mask & 0x99) != 0;
|
||||
bool notC = (mask & 0x0f) != 0;
|
||||
|
||||
bool aChanges = (mask & 0xcc) != 0 && notA;
|
||||
bool bChanges = (mask & 0x66) != 0 && notB;
|
||||
bool cChanges = (mask & 0xf0) != 0 && notC;
|
||||
|
||||
Operand localExpr = null;
|
||||
|
||||
void And(Operand source)
|
||||
private static TruthTable PermuteTable(TruthTable imm, int bit7, int bit6, int bit5, int bit4, int bit3, int bit2, int bit1, int bit0)
|
||||
{
|
||||
if (localExpr != null)
|
||||
{
|
||||
localExpr = context.BitwiseAnd(localExpr, source);
|
||||
}
|
||||
else
|
||||
{
|
||||
localExpr = source;
|
||||
}
|
||||
}
|
||||
int result = 0;
|
||||
|
||||
if (!aChanges)
|
||||
{
|
||||
And(context.BitwiseNot(srcA, notA));
|
||||
}
|
||||
result |= (((int)imm >> 0) & 1) << bit0;
|
||||
result |= (((int)imm >> 1) & 1) << bit1;
|
||||
result |= (((int)imm >> 2) & 1) << bit2;
|
||||
result |= (((int)imm >> 3) & 1) << bit3;
|
||||
result |= (((int)imm >> 4) & 1) << bit4;
|
||||
result |= (((int)imm >> 5) & 1) << bit5;
|
||||
result |= (((int)imm >> 6) & 1) << bit6;
|
||||
result |= (((int)imm >> 7) & 1) << bit7;
|
||||
|
||||
if (!bChanges)
|
||||
{
|
||||
And(context.BitwiseNot(srcB, notB));
|
||||
}
|
||||
|
||||
if (!cChanges)
|
||||
{
|
||||
And(context.BitwiseNot(srcC, notC));
|
||||
}
|
||||
|
||||
if (expr != null)
|
||||
{
|
||||
expr = context.BitwiseOr(expr, localExpr);
|
||||
}
|
||||
else
|
||||
{
|
||||
expr = localExpr;
|
||||
}
|
||||
|
||||
visited |= mask;
|
||||
}
|
||||
|
||||
return expr;
|
||||
}
|
||||
|
||||
private static int RotateLeft4(int value, int shift)
|
||||
{
|
||||
return ((value << shift) | (value >> (4 - shift))) & 0xf;
|
||||
return (TruthTable)result;
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue