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avo/internal/api/types.go

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all: AVX-512 (#217) 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>
2021-11-12 18:35:36 -08:00
package api
import (
"path"
"sort"
"strings"
)
const (
// Package is the avo package import path.
Package = "github.com/mmcloughlin/avo"
// IRPackage is the package that defines intermediate representation types.
IRPackage = "ir"
// OperandPackage is the package for operand types.
OperandPackage = "operand"
// OperandType is the type used for operands.
OperandType = OperandPackage + ".Op"
// RegisterPackage is the name of the package containing register types.
RegisterPackage = "reg"
// RegisterType is the type used for registers.
RegisterType = RegisterPackage + ".Register"
)
// ImportPath returns the full import path for an avo subpackage.
func ImportPath(pkg string) string {
return path.Join(Package, pkg)
}
// ImplicitRegisterIdentifier maps an implicit register name to a string
// suitable for a related Go identifier.
func ImplicitRegisterIdentifier(r string) string {
r = strings.Replace(r, "mm", "", 1) // handles the "xmm0" type
return strings.ToUpper(r)
}
// ImplicitRegister returns avo syntax for the given implicit register type (from Opcodes XML).
func ImplicitRegister(r string) string {
return RegisterPackage + "." + ImplicitRegisterIdentifier(r)
}
// OperandTypeIdentifier maps an operand type to a string suitable for a related
// Go identifier.
func OperandTypeIdentifier(t string) string {
return strings.ToUpper(strings.ReplaceAll(t, "/", ""))
}
// CheckerName returns the name of the function that checks an operand of type t.
func CheckerName(t string) string {
return "operand.Is" + OperandTypeIdentifier(t)
}
// ISAsIdentifier returns a string representation of an ISA list that suitable
// for use in a Go identifier.
func ISAsIdentifier(isas []string) string {
if len(isas) == 0 {
return "Base"
}
sorted := append([]string(nil), isas...)
sort.Strings(sorted)
ident := strings.Join(sorted, "_")
ident = strings.ReplaceAll(ident, ".", "") // SSE4.1
ident = strings.ReplaceAll(ident, "+", "") // MMX+
return ident
}
// SuffixesClassIdentifier returns a string representation of a suffix class
// that's suitable for use in a Go identifier.
func SuffixesClassIdentifier(c string) string {
return strings.ToUpper(c)
}