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Reduce Vector register pressure by not overlapping

This commit is contained in:
Ben Adams 2016-10-05 16:23:58 +01:00
parent 4f7977d440
commit 9eb01d1c57
1 changed files with 8 additions and 5 deletions
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13
src/Microsoft.AspNetCore.Server.Kestrel/Internal/Infrastructure/MemoryPoolIterator.cs
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@ -509,13 +509,14 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Internal.Infrastructure
if (following >= _vectorSpan) if (following >= _vectorSpan)
{ {
var data = new Vector<byte>(array, index); var data = new Vector<byte>(array, index);
var byte0Equals = Vector.Equals(data, byte0Vector);
var byte1Equals = Vector.Equals(data, byte1Vector);
var byte0Equals = Vector.Equals(data, byte0Vector);
if (!byte0Equals.Equals(Vector<byte>.Zero)) if (!byte0Equals.Equals(Vector<byte>.Zero))
{ {
byte0Index = LocateFirstFoundByte(ref byte0Equals); byte0Index = LocateFirstFoundByte(ref byte0Equals);
} }
var byte1Equals = Vector.Equals(data, byte1Vector);
if (!byte1Equals.Equals(Vector<byte>.Zero)) if (!byte1Equals.Equals(Vector<byte>.Zero))
{ {
byte1Index = LocateFirstFoundByte(ref byte1Equals); byte1Index = LocateFirstFoundByte(ref byte1Equals);
@ -652,18 +653,20 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Internal.Infrastructure
if (following >= _vectorSpan) if (following >= _vectorSpan)
{ {
var data = new Vector<byte>(array, index); var data = new Vector<byte>(array, index);
var byte0Equals = Vector.Equals(data, byte0Vector);
var byte1Equals = Vector.Equals(data, byte1Vector);
var byte2Equals = Vector.Equals(data, byte2Vector);
var byte0Equals = Vector.Equals(data, byte0Vector);
if (!byte0Equals.Equals(Vector<byte>.Zero)) if (!byte0Equals.Equals(Vector<byte>.Zero))
{ {
byte0Index = LocateFirstFoundByte(ref byte0Equals); byte0Index = LocateFirstFoundByte(ref byte0Equals);
} }
var byte1Equals = Vector.Equals(data, byte1Vector);
if (!byte1Equals.Equals(Vector<byte>.Zero)) if (!byte1Equals.Equals(Vector<byte>.Zero))
{ {
byte1Index = LocateFirstFoundByte(ref byte1Equals); byte1Index = LocateFirstFoundByte(ref byte1Equals);
} }
var byte2Equals = Vector.Equals(data, byte2Vector);
if (!byte2Equals.Equals(Vector<byte>.Zero)) if (!byte2Equals.Equals(Vector<byte>.Zero))
{ {
byte2Index = LocateFirstFoundByte(ref byte2Equals); byte2Index = LocateFirstFoundByte(ref byte2Equals);