e2c0a40f50
Adds the "Vector Bit Manipulation Instructions 2" instruction set. These new instructions are added via the `opcodesextra` mechanism #345, since they're missing from the opcodes database. Contributed by @vsivsi. Extracted from #349 with simplifications. Specifically, as prompted by the `dupl` linter we extract some common forms lists into a helper `forms.go` file. Co-authored-by: Vaughn Iverson <vsivsi@yahoo.com>
54 lines
1.5 KiB
Go
54 lines
1.5 KiB
Go
// Package opcodesextra provides curated extensions to the instruction database.
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package opcodesextra
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import (
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"sort"
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"github.com/mmcloughlin/avo/internal/inst"
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)
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// sets of extra instructions.
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var sets = [][]*inst.Instruction{
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movlqzx,
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gfni,
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vaes,
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vnni,
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vpclmulqdq,
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vpopcntdq,
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bitalg,
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vbmi2,
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}
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// Instructions returns a list of extras to add to the instructions database.
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//
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// Note that instructions returned are expected to be injected into the loading
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// process, as if they had been read out of the Opcodes database. As such, they
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// are not expected to be in the final form required for the instruction
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// database. For example, AVX-512 instruction form transformations do not need
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// to be applied, and operand types such as xmm{k}{z} or m256/m64bcst may be
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// used for brevity.
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func Instructions() []*inst.Instruction {
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// Concatenate and clone the instruction lists. It can be convenient for
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// forms lists and other data structures to be shared in the curated lists,
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// but we want to return distinct copies here to avoid subtle bugs in
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// consumers.
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var is []*inst.Instruction
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for _, set := range sets {
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for _, i := range set {
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c := i.Clone()
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is = append(is, &c)
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}
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}
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// Sort ISA lists. Similarly, this facilitates sharing helper functions for
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// building forms lists without worrying about whether the ISA list is in
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// the right order.
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for _, i := range is {
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for idx := range i.Forms {
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sort.Strings(i.Forms[idx].ISA)
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}
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}
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return is
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}
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