internal/simdgen: add galois field instructions
This CL generates CL 684175.
Change-Id: I1b327fd1d3d3aa15cd23523371f186ceef37db76
Reviewed-on: https://go-review.googlesource.com/c/arch/+/684155
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
diff --git a/internal/simdgen/categories.yaml b/internal/simdgen/categories.yaml
index b349fc5..4b21d5a 100644
--- a/internal/simdgen/categories.yaml
+++ b/internal/simdgen/categories.yaml
@@ -455,6 +455,32 @@
extension: "AVX.*"
documentation: !string |-
// AddSub subtracts even elements and adds odd elements of two vectors.
+- go: MaskedGaloisFieldAffineTransform
+ masked: "true"
+ commutative: "false"
+ extension: "AVX.*"
+ documentation: !string |-
+ // GaloisFieldAffineTransform computes an affine transformation in GF(2^8):
+ // x is a vector of 8-bit vectors, with each adjacent 8 as a group; y is a vector of 8x8 1-bit matrixes;
+ // imm is an 8-bit vector. The affine transformation is y * x + imm, with each element of y
+ // corresponding to a group of 8 elements in x.
+- go: MaskedGaloisFieldAffineTransformInversed
+ masked: "true"
+ commutative: "false"
+ extension: "AVX.*"
+ documentation: !string |-
+ // GaloisFieldAffineTransform computes an affine transformation in GF(2^8),
+ // with x inversed with reduction polynomial x^8 + x^4 + x^3 + x + 1:
+ // x is a vector of 8-bit vectors, with each adjacent 8 as a group; y is a vector of 8x8 1-bit matrixes;
+ // imm is an 8-bit vector. The affine transformation is y * x + imm, with each element of y
+ // corresponding to a group of 8 elements in x.
+- go: MaskedGaloisFieldMul
+ masked: "true"
+ commutative: "false"
+ extension: "AVX.*"
+ documentation: !string |-
+ // GaloisFieldMul computes element-wise GF(2^8) multiplication with
+ // reduction polynomial x^8 + x^4 + x^3 + x + 1.
- go: Average
commutative: "true"
extension: "AVX.*" # VPAVGB/W are available across various AVX versions
diff --git a/internal/simdgen/go.yaml b/internal/simdgen/go.yaml
index 52fef3b..2d1038d 100644
--- a/internal/simdgen/go.yaml
+++ b/internal/simdgen/go.yaml
@@ -431,6 +431,36 @@
- *fp
out:
- *fp
+- go: MaskedGaloisFieldAffineTransform
+ asm: VGF2P8AFFINEQB
+ in: &AffineArgs
+ - class: mask
+ - &uint8
+ go: $t
+ base: uint
+ - &uint8x8
+ go: $t2
+ base: uint
+ - &pureImmVar
+ class: immediate
+ immOffset: 0
+ out:
+ - *uint8
+
+- go: MaskedGaloisFieldAffineTransformInversed
+ asm: VGF2P8AFFINEINVQB
+ in: *AffineArgs
+ out:
+ - *uint8
+
+- go: MaskedGaloisFieldMul
+ asm: VGF2P8MULB
+ in:
+ - class: mask
+ - *uint8
+ - *uint8
+ out:
+ - *uint8
# Average (unsigned byte, unsigned word)
# Instructions: VPAVGB, VPAVGW
- go: Average
diff --git a/internal/simdgen/ops/GaloisField/categories.yaml b/internal/simdgen/ops/GaloisField/categories.yaml
new file mode 100644
index 0000000..915d3ec
--- /dev/null
+++ b/internal/simdgen/ops/GaloisField/categories.yaml
@@ -0,0 +1,27 @@
+!sum
+- go: MaskedGaloisFieldAffineTransform
+ masked: "true"
+ commutative: "false"
+ extension: "AVX.*"
+ documentation: !string |-
+ // GaloisFieldAffineTransform computes an affine transformation in GF(2^8):
+ // x is a vector of 8-bit vectors, with each adjacent 8 as a group; y is a vector of 8x8 1-bit matrixes;
+ // imm is an 8-bit vector. The affine transformation is y * x + imm, with each element of y
+ // corresponding to a group of 8 elements in x.
+- go: MaskedGaloisFieldAffineTransformInversed
+ masked: "true"
+ commutative: "false"
+ extension: "AVX.*"
+ documentation: !string |-
+ // GaloisFieldAffineTransform computes an affine transformation in GF(2^8),
+ // with x inversed with reduction polynomial x^8 + x^4 + x^3 + x + 1:
+ // x is a vector of 8-bit vectors, with each adjacent 8 as a group; y is a vector of 8x8 1-bit matrixes;
+ // imm is an 8-bit vector. The affine transformation is y * x + imm, with each element of y
+ // corresponding to a group of 8 elements in x.
+- go: MaskedGaloisFieldMul
+ masked: "true"
+ commutative: "false"
+ extension: "AVX.*"
+ documentation: !string |-
+ // GaloisFieldMul computes element-wise GF(2^8) multiplication with
+ // reduction polynomial x^8 + x^4 + x^3 + x + 1.
\ No newline at end of file
diff --git a/internal/simdgen/ops/GaloisField/go.yaml b/internal/simdgen/ops/GaloisField/go.yaml
new file mode 100644
index 0000000..9008ab2
--- /dev/null
+++ b/internal/simdgen/ops/GaloisField/go.yaml
@@ -0,0 +1,31 @@
+!sum
+- go: MaskedGaloisFieldAffineTransform
+ asm: VGF2P8AFFINEQB
+ in: &AffineArgs
+ - class: mask
+ - &uint8
+ go: $t
+ base: uint
+ - &uint8x8
+ go: $t2
+ base: uint
+ - &pureImmVar
+ class: immediate
+ immOffset: 0
+ out:
+ - *uint8
+
+- go: MaskedGaloisFieldAffineTransformInversed
+ asm: VGF2P8AFFINEINVQB
+ in: *AffineArgs
+ out:
+ - *uint8
+
+- go: MaskedGaloisFieldMul
+ asm: VGF2P8MULB
+ in:
+ - class: mask
+ - *uint8
+ - *uint8
+ out:
+ - *uint8
\ No newline at end of file
