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Vendor the upstream changes with Avx512 (#7225)

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Thanks to @fwessels we have Avx512 support with 4x improvement
This commit is contained in:
Harshavardhana
2019-02-12 04:02:27 -08:00
committed by Nitish Tiwari
parent fef5416b3c
commit 118270d76f
10 changed files with 847 additions and 32 deletions
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vendor/github.com/klauspost/reedsolomon/reedsolomon.go
Generated Vendored
+12 -9
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@@ -372,7 +372,7 @@ func (r reedSolomon) updateParityShards(matrixRows, oldinputs, newinputs, output
// oldinputs data will be change
sliceXor(in, oldin, r.o.useSSE2)
for iRow := 0; iRow < outputCount; iRow++ {
galMulSliceXor(matrixRows[iRow][c], oldin, outputs[iRow], r.o.useSSSE3, r.o.useAVX2)
galMulSliceXor(matrixRows[iRow][c], oldin, outputs[iRow], &r.o)
}
}
}
@@ -399,7 +399,7 @@ func (r reedSolomon) updateParityShardsP(matrixRows, oldinputs, newinputs, outpu
// oldinputs data will be change
sliceXor(in[start:stop], oldin[start:stop], r.o.useSSE2)
for iRow := 0; iRow < outputCount; iRow++ {
galMulSliceXor(matrixRows[iRow][c], oldin[start:stop], outputs[iRow][start:stop], r.o.useSSSE3, r.o.useAVX2)
galMulSliceXor(matrixRows[iRow][c], oldin[start:stop], outputs[iRow][start:stop], &r.o)
}
}
wg.Done()
@@ -437,7 +437,10 @@ func (r reedSolomon) Verify(shards [][]byte) (bool, error) {
// number of matrix rows used, is determined by
// outputCount, which is the number of outputs to compute.
func (r reedSolomon) codeSomeShards(matrixRows, inputs, outputs [][]byte, outputCount, byteCount int) {
if r.o.maxGoroutines > 1 && byteCount > r.o.minSplitSize {
if r.o.useAVX512 && len(inputs) >= 4 && len(outputs) >= 2 {
r.codeSomeShardsAvx512(matrixRows, inputs, outputs, outputCount, byteCount)
return
} else if r.o.maxGoroutines > 1 && byteCount > r.o.minSplitSize {
r.codeSomeShardsP(matrixRows, inputs, outputs, outputCount, byteCount)
return
}
@@ -445,9 +448,9 @@ func (r reedSolomon) codeSomeShards(matrixRows, inputs, outputs [][]byte, output
in := inputs[c]
for iRow := 0; iRow < outputCount; iRow++ {
if c == 0 {
galMulSlice(matrixRows[iRow][c], in, outputs[iRow], r.o.useSSSE3, r.o.useAVX2)
galMulSlice(matrixRows[iRow][c], in, outputs[iRow], &r.o)
} else {
galMulSliceXor(matrixRows[iRow][c], in, outputs[iRow], r.o.useSSSE3, r.o.useAVX2)
galMulSliceXor(matrixRows[iRow][c], in, outputs[iRow], &r.o)
}
}
}
@@ -474,9 +477,9 @@ func (r reedSolomon) codeSomeShardsP(matrixRows, inputs, outputs [][]byte, outpu
in := inputs[c][start:stop]
for iRow := 0; iRow < outputCount; iRow++ {
if c == 0 {
galMulSlice(matrixRows[iRow][c], in, outputs[iRow][start:stop], r.o.useSSSE3, r.o.useAVX2)
galMulSlice(matrixRows[iRow][c], in, outputs[iRow][start:stop], &r.o)
} else {
galMulSliceXor(matrixRows[iRow][c], in, outputs[iRow][start:stop], r.o.useSSSE3, r.o.useAVX2)
galMulSliceXor(matrixRows[iRow][c], in, outputs[iRow][start:stop], &r.o)
}
}
}
@@ -501,7 +504,7 @@ func (r reedSolomon) checkSomeShards(matrixRows, inputs, toCheck [][]byte, outpu
for c := 0; c < r.DataShards; c++ {
in := inputs[c]
for iRow := 0; iRow < outputCount; iRow++ {
galMulSliceXor(matrixRows[iRow][c], in, outputs[iRow], r.o.useSSSE3, r.o.useAVX2)
galMulSliceXor(matrixRows[iRow][c], in, outputs[iRow], &r.o)
}
}
@@ -545,7 +548,7 @@ func (r reedSolomon) checkSomeShardsP(matrixRows, inputs, toCheck [][]byte, outp
mu.RUnlock()
in := inputs[c][start : start+do]
for iRow := 0; iRow < outputCount; iRow++ {
galMulSliceXor(matrixRows[iRow][c], in, outputs[iRow], r.o.useSSSE3, r.o.useAVX2)
galMulSliceXor(matrixRows[iRow][c], in, outputs[iRow], &r.o)
}
}