std.Target: Introduce Cpu convenience functions for feature tests.

Before:

* std.Target.arm.featureSetHas(target.cpu.features, .has_v7)
* std.Target.x86.featureSetHasAny(target.cpu.features, .{ .sse, .avx, .cmov })
* std.Target.wasm.featureSetHasAll(target.cpu.features, .{ .atomics, .bulk_memory })

After:

* target.cpu.has(.arm, .has_v7)
* target.cpu.hasAny(.x86, &.{ .sse, .avx, .cmov })
* target.cpu.hasAll(.wasm, &.{ .atomics, .bulk_memory })

1 files changed, 20 insertions, 0 deletions

diff --git a/lib/std/Target/generic.zig b/lib/std/Target/generic.zig
new file mode 100644
index 0000000000..13c229fc48
--- /dev/null
+++ b/lib/std/Target/generic.zig
@@ -0,0 +1,20 @@
+const std = @import("../std.zig");
+const CpuFeature = std.Target.Cpu.Feature;
+const CpuModel = std.Target.Cpu.Model;
+
+pub const Feature = enum {};
+
+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: [0]CpuFeature = .{};
+
+pub const cpu = struct {
+    pub const generic: CpuModel = .{
+        .name = "generic",
+        .llvm_name = null,
+        .features = featureSet(&.{}),
+    };
+};