b76e849b5c
Extends avo to support most AVX-512 instruction sets.
The instruction type is extended to support suffixes. The K family of opmask
registers is added to the register package, and the operand package is updated
to support the new operand types. Move instruction deduction in `Load` and
`Store` is extended to support KMOV* and VMOV* forms.
Internal code generation packages were overhauled. Instruction database loading
required various messy changes to account for the additional complexities of the
AVX-512 instruction sets. The internal/api package was added to introduce a
separation between instruction forms in the database, and the functions avo
provides to create them. This was required since with instruction suffixes there
is no longer a one-to-one mapping between instruction constructors and opcodes.
AVX-512 bloated generated source code size substantially, initially increasing
compilation and CI test times to an unacceptable level. Two changes were made to
address this:
1. Instruction constructors in the `x86` package moved to an optab-based
approach. This compiles substantially faster than the verbose code
generation we had before.
2. The most verbose code-generated tests are moved under build tags and
limited to a stress test mode. Stress test builds are run on
schedule but not in regular CI.
An example of AVX-512 accelerated 16-lane MD5 is provided to demonstrate and
test the new functionality.
Updates #20 #163 #229
Co-authored-by: Vaughn Iverson <vsivsi@yahoo.com>
53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
package gen
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import (
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"github.com/mmcloughlin/avo/internal/api"
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"github.com/mmcloughlin/avo/internal/inst"
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"github.com/mmcloughlin/avo/internal/prnt"
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"github.com/mmcloughlin/avo/printer"
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)
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type ctors struct {
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cfg printer.Config
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prnt.Generator
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}
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// NewCtors will build instruction constructors. Each constructor delegates to
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// the optab-based instruction builder, providing it with a candidate list of
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// forms to match against.
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func NewCtors(cfg printer.Config) Interface {
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return GoFmt(&ctors{cfg: cfg})
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}
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func (c *ctors) Generate(is []inst.Instruction) ([]byte, error) {
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c.Printf("// %s\n\n", c.cfg.GeneratedWarning())
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c.Printf("package x86\n\n")
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c.Printf("import (\n")
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c.Printf("\tintrep %q\n", api.ImportPath(api.IRPackage))
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c.Printf("\t%q\n", api.ImportPath(api.OperandPackage))
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c.Printf(")\n\n")
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fns := api.InstructionsFunctions(is)
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table := NewTable(is)
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for _, fn := range fns {
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c.function(fn, table)
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}
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return c.Result()
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}
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func (c *ctors) function(fn *api.Function, table *Table) {
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c.Comment(fn.Doc()...)
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s := fn.Signature()
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c.Printf("func %s(%s) (*intrep.Instruction, error) {\n", fn.Name(), s.ParameterList())
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c.Printf(
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"return build(%s.Forms(), %s, %s)\n",
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table.OpcodeConst(fn.Instruction.Opcode),
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table.SuffixesConst(fn.Suffixes),
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s.ParameterSlice(),
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)
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c.Printf("}\n\n")
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}
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