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std.Target: add CPU features and models for alpha

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Alex Rønne Petersen 2025-11-13 22:28:50 +01:00
parent 181b25ce4f
commit 2b23f98d2c
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3 changed files with 181 additions and 1 deletions
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4
lib/std/Target.zig
View file

@ -700,7 +700,7 @@ pub const Os = struct {
};
pub const aarch64 = @import("Target/aarch64.zig");
pub const alpha = @import("Target/generic.zig");
pub const alpha = @import("Target/alpha.zig");
pub const amdgcn = @import("Target/amdgcn.zig");
pub const arc = @import("Target/arc.zig");
pub const arm = @import("Target/arm.zig");
@ -1944,6 +1944,7 @@ pub const Cpu = struct {
/// Clang compatibility is important, consider using `baseline` instead.
pub fn generic(arch: Arch) *const Model {
return switch (arch) {
.alpha => &alpha.cpu.ev4,
.amdgcn => &amdgcn.cpu.gfx600,
.avr => &avr.cpu.avr1,
.kvx => &kvx.cpu.coolidge_v1,
@ -1976,6 +1977,7 @@ pub const Cpu = struct {
/// `Os.Tag.freestanding`.
pub fn baseline(arch: Arch, os: Os) *const Model {
return switch (arch) {
.alpha => &alpha.cpu.ev6,
.amdgcn => &amdgcn.cpu.gfx906,
.arm => switch (os.tag) {
.@"3ds" => &arm.cpu.mpcore,

101
lib/std/Target/alpha.zig Normal file
View file

@ -0,0 +1,101 @@
//! This file is auto-generated by tools/update_cpu_features.zig.
const std = @import("../std.zig");
const CpuFeature = std.Target.Cpu.Feature;
const CpuModel = std.Target.Cpu.Model;
pub const Feature = enum {
bwx,
cix,
fix,
max,
};
pub const featureSet = CpuFeature.FeatureSetFns(Feature).featureSet;
pub const featureSetHas = CpuFeature.FeatureSetFns(Feature).featureSetHas;
pub const featureSetHasAny = CpuFeature.FeatureSetFns(Feature).featureSetHasAny;
pub const featureSetHasAll = CpuFeature.FeatureSetFns(Feature).featureSetHasAll;
pub const all_features = blk: {
const len = @typeInfo(Feature).@"enum".fields.len;
std.debug.assert(len <= CpuFeature.Set.needed_bit_count);
var result: [len]CpuFeature = undefined;
result[@intFromEnum(Feature.bwx)] = .{
.llvm_name = null,
.description = "Enable byte/word extensions",
.dependencies = featureSet(&[_]Feature{}),
};
result[@intFromEnum(Feature.cix)] = .{
.llvm_name = null,
.description = "Enable counting extensions",
.dependencies = featureSet(&[_]Feature{}),
};
result[@intFromEnum(Feature.fix)] = .{
.llvm_name = null,
.description = "Enable floating point move and square root extensions",
.dependencies = featureSet(&[_]Feature{}),
};
result[@intFromEnum(Feature.max)] = .{
.llvm_name = null,
.description = "Enable motion video extensions",
.dependencies = featureSet(&[_]Feature{}),
};
const ti = @typeInfo(Feature);
for (&result, 0..) |*elem, i| {
elem.index = i;
elem.name = ti.@"enum".fields[i].name;
}
break :blk result;
};
pub const cpu = struct {
pub const ev4: CpuModel = .{
.name = "ev4",
.llvm_name = null,
.features = featureSet(&[_]Feature{}),
};
pub const ev45: CpuModel = .{
.name = "ev45",
.llvm_name = null,
.features = featureSet(&[_]Feature{}),
};
pub const ev5: CpuModel = .{
.name = "ev5",
.llvm_name = null,
.features = featureSet(&[_]Feature{}),
};
pub const ev56: CpuModel = .{
.name = "ev56",
.llvm_name = null,
.features = featureSet(&[_]Feature{
.bwx,
}),
};
pub const ev6: CpuModel = .{
.name = "ev6",
.llvm_name = null,
.features = featureSet(&[_]Feature{
.bwx,
.fix,
.max,
}),
};
pub const ev67: CpuModel = .{
.name = "ev67",
.llvm_name = null,
.features = featureSet(&[_]Feature{
.bwx,
.cix,
.fix,
.max,
}),
};
pub const pca56: CpuModel = .{
.name = "pca56",
.llvm_name = null,
.features = featureSet(&[_]Feature{
.bwx,
.max,
}),
};
};

77
tools/update_cpu_features.zig
View file

@ -393,6 +393,83 @@ const targets = [_]ArchTarget{
"apple-latest",
},
},
.{
.zig_name = "alpha",
.llvm = null,
.extra_features = &.{
.{
.zig_name = "bwx",
.desc = "Enable byte/word extensions",
.deps = &.{},
},
.{
.zig_name = "cix",
.desc = "Enable counting extensions",
.deps = &.{},
},
.{
.zig_name = "fix",
.desc = "Enable floating point move and square root extensions",
.deps = &.{},
},
.{
.zig_name = "max",
.desc = "Enable motion video extensions",
.deps = &.{},
},
},
.extra_cpus = &.{
.{
.llvm_name = null,
.zig_name = "ev4",
.features = &.{},
},
.{
.llvm_name = null,
.zig_name = "ev45",
.features = &.{},
},
.{
.llvm_name = null,
.zig_name = "ev5",
.features = &.{},
},
.{
.llvm_name = null,
.zig_name = "ev56",
.features = &.{
"bwx",
},
},
.{
.llvm_name = null,
.zig_name = "pca56",
.features = &.{
"bwx",
"max",
},
},
.{
.llvm_name = null,
.zig_name = "ev6",
.features = &.{
"bwx",
"fix",
"max",
},
},
.{
.llvm_name = null,
.zig_name = "ev67",
.features = &.{
"bwx",
"cix",
"fix",
"max",
},
},
},
},
.{
.zig_name = "amdgcn",
.llvm = .{