Take advantage of new HashMap API's preserving order

lib/std/target.zig

@@ -903,25 +903,34 @@ pub const Target = struct {
             /// All processors Zig is aware of, sorted lexicographically by name.
             pub fn allCpuModels(arch: Arch) []const *const Cpu.Model {
                 return switch (arch) {
-                    .arm, .armeb, .thumb, .thumbeb => arm.all_cpus,
-                    .aarch64, .aarch64_be, .aarch64_32 => aarch64.all_cpus,
-                    .avr => avr.all_cpus,
-                    .bpfel, .bpfeb => bpf.all_cpus,
-                    .hexagon => hexagon.all_cpus,
-                    .mips, .mipsel, .mips64, .mips64el => mips.all_cpus,
-                    .msp430 => msp430.all_cpus,
-                    .powerpc, .powerpc64, .powerpc64le => powerpc.all_cpus,
-                    .amdgcn => amdgpu.all_cpus,
-                    .riscv32, .riscv64 => riscv.all_cpus,
-                    .sparc, .sparcv9, .sparcel => sparc.all_cpus,
-                    .s390x => systemz.all_cpus,
-                    .i386, .x86_64 => x86.all_cpus,
-                    .nvptx, .nvptx64 => nvptx.all_cpus,
-                    .wasm32, .wasm64 => wasm.all_cpus,
+                    .arm, .armeb, .thumb, .thumbeb => comptime allCpusFromDecls(arm.cpu),
+                    .aarch64, .aarch64_be, .aarch64_32 => comptime allCpusFromDecls(aarch64.cpu),
+                    .avr => comptime allCpusFromDecls(avr.cpu),
+                    .bpfel, .bpfeb => comptime allCpusFromDecls(bpf.cpu),
+                    .hexagon => comptime allCpusFromDecls(hexagon.cpu),
+                    .mips, .mipsel, .mips64, .mips64el => comptime allCpusFromDecls(mips.cpu),
+                    .msp430 => comptime allCpusFromDecls(msp430.cpu),
+                    .powerpc, .powerpc64, .powerpc64le => comptime allCpusFromDecls(powerpc.cpu),
+                    .amdgcn => comptime allCpusFromDecls(amdgpu.cpu),
+                    .riscv32, .riscv64 => comptime allCpusFromDecls(riscv.cpu),
+                    .sparc, .sparcv9, .sparcel => comptime allCpusFromDecls(sparc.cpu),
+                    .s390x => comptime allCpusFromDecls(systemz.cpu),
+                    .i386, .x86_64 => comptime allCpusFromDecls(x86.cpu),
+                    .nvptx, .nvptx64 => comptime allCpusFromDecls(nvptx.cpu),
+                    .wasm32, .wasm64 => comptime allCpusFromDecls(wasm.cpu),
 
                     else => &[0]*const Model{},
                 };
             }
+
+            fn allCpusFromDecls(comptime cpus: type) []const *const Cpu.Model {
+                const decls = std.meta.declarations(cpus);
+                var array: [decls.len]*const Cpu.Model = undefined;
+                for (decls) |decl, i| {
+                    array[i] = &@field(cpus, decl.name);
+                }
+                return &array;
+            }
         };
 
         pub const Model = struct {

lib/std/target/aarch64.zig

@@ -1505,48 +1505,3 @@ pub const cpu = struct {
         }),
     };
 };
-
-/// All aarch64 CPUs, sorted alphabetically by name.
-/// TODO: Replace this with usage of `std.meta.declList`. It does work, but stage1
-/// compiler has inefficient memory and CPU usage, affecting build times.
-pub const all_cpus = &[_]*const CpuModel{
-    &cpu.apple_a10,
-    &cpu.apple_a11,
-    &cpu.apple_a12,
-    &cpu.apple_a13,
-    &cpu.apple_a7,
-    &cpu.apple_a8,
-    &cpu.apple_a9,
-    &cpu.apple_latest,
-    &cpu.apple_s4,
-    &cpu.apple_s5,
-    &cpu.cortex_a35,
-    &cpu.cortex_a53,
-    &cpu.cortex_a55,
-    &cpu.cortex_a57,
-    &cpu.cortex_a65,
-    &cpu.cortex_a65ae,
-    &cpu.cortex_a72,
-    &cpu.cortex_a73,
-    &cpu.cortex_a75,
-    &cpu.cortex_a76,
-    &cpu.cortex_a76ae,
-    &cpu.cyclone,
-    &cpu.exynos_m1,
-    &cpu.exynos_m2,
-    &cpu.exynos_m3,
-    &cpu.exynos_m4,
-    &cpu.exynos_m5,
-    &cpu.falkor,
-    &cpu.generic,
-    &cpu.kryo,
-    &cpu.neoverse_e1,
-    &cpu.neoverse_n1,
-    &cpu.saphira,
-    &cpu.thunderx,
-    &cpu.thunderx2t99,
-    &cpu.thunderxt81,
-    &cpu.thunderxt83,
-    &cpu.thunderxt88,
-    &cpu.tsv110,
-};

lib/std/target/amdgpu.zig

@@ -1276,48 +1276,3 @@ pub const cpu = struct {
         }),
     };
 };
-
-/// All amdgpu CPUs, sorted alphabetically by name.
-/// TODO: Replace this with usage of `std.meta.declList`. It does work, but stage1
-/// compiler has inefficient memory and CPU usage, affecting build times.
-pub const all_cpus = &[_]*const CpuModel{
-    &cpu.bonaire,
-    &cpu.carrizo,
-    &cpu.fiji,
-    &cpu.generic,
-    &cpu.generic_hsa,
-    &cpu.gfx1010,
-    &cpu.gfx1011,
-    &cpu.gfx1012,
-    &cpu.gfx600,
-    &cpu.gfx601,
-    &cpu.gfx700,
-    &cpu.gfx701,
-    &cpu.gfx702,
-    &cpu.gfx703,
-    &cpu.gfx704,
-    &cpu.gfx801,
-    &cpu.gfx802,
-    &cpu.gfx803,
-    &cpu.gfx810,
-    &cpu.gfx900,
-    &cpu.gfx902,
-    &cpu.gfx904,
-    &cpu.gfx906,
-    &cpu.gfx908,
-    &cpu.gfx909,
-    &cpu.hainan,
-    &cpu.hawaii,
-    &cpu.iceland,
-    &cpu.kabini,
-    &cpu.kaveri,
-    &cpu.mullins,
-    &cpu.oland,
-    &cpu.pitcairn,
-    &cpu.polaris10,
-    &cpu.polaris11,
-    &cpu.stoney,
-    &cpu.tahiti,
-    &cpu.tonga,
-    &cpu.verde,
-};

lib/std/target/arm.zig

@@ -2145,92 +2145,3 @@ pub const cpu = struct {
         }),
     };
 };
-
-/// All arm CPUs, sorted alphabetically by name.
-/// TODO: Replace this with usage of `std.meta.declList`. It does work, but stage1
-/// compiler has inefficient memory and CPU usage, affecting build times.
-pub const all_cpus = &[_]*const CpuModel{
-    &cpu.arm1020e,
-    &cpu.arm1020t,
-    &cpu.arm1022e,
-    &cpu.arm10e,
-    &cpu.arm10tdmi,
-    &cpu.arm1136j_s,
-    &cpu.arm1136jf_s,
-    &cpu.arm1156t2_s,
-    &cpu.arm1156t2f_s,
-    &cpu.arm1176j_s,
-    &cpu.arm1176jz_s,
-    &cpu.arm1176jzf_s,
-    &cpu.arm710t,
-    &cpu.arm720t,
-    &cpu.arm7tdmi,
-    &cpu.arm7tdmi_s,
-    &cpu.arm8,
-    &cpu.arm810,
-    &cpu.arm9,
-    &cpu.arm920,
-    &cpu.arm920t,
-    &cpu.arm922t,
-    &cpu.arm926ej_s,
-    &cpu.arm940t,
-    &cpu.arm946e_s,
-    &cpu.arm966e_s,
-    &cpu.arm968e_s,
-    &cpu.arm9e,
-    &cpu.arm9tdmi,
-    &cpu.cortex_a12,
-    &cpu.cortex_a15,
-    &cpu.cortex_a17,
-    &cpu.cortex_a32,
-    &cpu.cortex_a35,
-    &cpu.cortex_a5,
-    &cpu.cortex_a53,
-    &cpu.cortex_a55,
-    &cpu.cortex_a57,
-    &cpu.cortex_a7,
-    &cpu.cortex_a72,
-    &cpu.cortex_a73,
-    &cpu.cortex_a75,
-    &cpu.cortex_a76,
-    &cpu.cortex_a76ae,
-    &cpu.cortex_a8,
-    &cpu.cortex_a9,
-    &cpu.cortex_m0,
-    &cpu.cortex_m0plus,
-    &cpu.cortex_m1,
-    &cpu.cortex_m23,
-    &cpu.cortex_m3,
-    &cpu.cortex_m33,
-    &cpu.cortex_m35p,
-    &cpu.cortex_m4,
-    &cpu.cortex_m7,
-    &cpu.cortex_r4,
-    &cpu.cortex_r4f,
-    &cpu.cortex_r5,
-    &cpu.cortex_r52,
-    &cpu.cortex_r7,
-    &cpu.cortex_r8,
-    &cpu.cyclone,
-    &cpu.ep9312,
-    &cpu.exynos_m1,
-    &cpu.exynos_m2,
-    &cpu.exynos_m3,
-    &cpu.exynos_m4,
-    &cpu.exynos_m5,
-    &cpu.generic,
-    &cpu.iwmmxt,
-    &cpu.krait,
-    &cpu.kryo,
-    &cpu.mpcore,
-    &cpu.mpcorenovfp,
-    &cpu.neoverse_n1,
-    &cpu.sc000,
-    &cpu.sc300,
-    &cpu.strongarm,
-    &cpu.strongarm110,
-    &cpu.strongarm1100,
-    &cpu.strongarm1110,
-    &cpu.swift,
-    &cpu.xscale,
-};