std.Target: Remove Os.Tag.bridgeos.

It doesn't appear that targeting bridgeOS is meaningfully supported by Apple.
Even LLVM/Clang appear to have incomplete support for it, suggesting that Apple
never bothered to upstream that support. So there's really no sense in us
pretending to support this.

lib/compiler/aro/aro/target.zig

@@ -663,7 +663,6 @@ pub fn toLLVMTriple(target: std.Target, buf: []u8) []const u8 {
         .driverkit => "driverkit",
         .visionos => "xros",
         .serenity => "serenity",
-        .bridgeos => "bridgeos",
         .opencl,
         .opengl,
         .vulkan,

lib/std/Target.zig

@@ -38,7 +38,6 @@ pub const Os = struct {
         netbsd,
         openbsd,
 
-        bridgeos,
         driverkit,
         ios,
         macos,
@@ -69,6 +68,7 @@ pub const Os = struct {
         vulkan,
 
         // LLVM tags deliberately omitted:
+        // - bridgeos
         // - darwin
         // - kfreebsd
         // - nacl
@@ -76,7 +76,6 @@ pub const Os = struct {
 
         pub inline fn isDarwin(tag: Tag) bool {
             return switch (tag) {
-                .bridgeos,
                 .driverkit,
                 .ios,
                 .macos,
@@ -124,7 +123,6 @@ pub const Os = struct {
         pub fn dynamicLibSuffix(tag: Tag) [:0]const u8 {
             return switch (tag) {
                 .windows, .uefi => ".dll",
-                .bridgeos,
                 .driverkit,
                 .ios,
                 .macos,
@@ -168,9 +166,6 @@ pub const Os = struct {
                 .plan9,
                 .serenity,
 
-                // This should use semver once we determine the version history.
-                .bridgeos,
-
                 .illumos,
 
                 .ps3,
@@ -432,9 +427,6 @@ pub const Os = struct {
                 .plan9,
                 .serenity,
 
-                // This should use semver once we determine the version history.
-                .bridgeos,
-
                 .illumos,
 
                 .ps3,
@@ -701,7 +693,6 @@ pub const Os = struct {
             .freebsd,
             .aix,
             .netbsd,
-            .bridgeos,
             .driverkit,
             .macos,
             .ios,
@@ -927,7 +918,6 @@ pub const Abi = enum {
             .serenity,
             .zos,
             .dragonfly,
-            .bridgeos,
             .driverkit,
             .macos,
             .illumos,
@@ -1049,7 +1039,7 @@ pub const ObjectFormat = enum {
     pub fn default(os_tag: Os.Tag, arch: Cpu.Arch) ObjectFormat {
         return switch (os_tag) {
             .aix => .xcoff,
-            .bridgeos, .driverkit, .ios, .macos, .tvos, .visionos, .watchos => .macho,
+            .driverkit, .ios, .macos, .tvos, .visionos, .watchos => .macho,
             .plan9 => .plan9,
             .uefi, .windows => .coff,
             .zos => .goff,
@@ -1975,7 +1965,7 @@ pub const Cpu = struct {
                 .amdgcn => &amdgcn.cpu.gfx906,
                 .arm, .armeb, .thumb, .thumbeb => &arm.cpu.baseline,
                 .aarch64 => switch (os.tag) {
-                    .bridgeos, .driverkit, .macos => &aarch64.cpu.apple_m1,
+                    .driverkit, .macos => &aarch64.cpu.apple_m1,
                     .ios, .tvos => &aarch64.cpu.apple_a7,
                     .visionos => &aarch64.cpu.apple_m2,
                     .watchos => &aarch64.cpu.apple_s4,
@@ -2159,7 +2149,6 @@ pub const DynamicLinker = struct {
             .netbsd,
             .openbsd,
 
-            .bridgeos,
             .driverkit,
             .ios,
             .macos,
@@ -2546,7 +2535,6 @@ pub const DynamicLinker = struct {
                 else => none,
             },
 
-            .bridgeos => if (cpu.arch == .aarch64) init("/usr/lib/dyld") else none,
             .driverkit,
             .ios,
             .macos,
@@ -3045,7 +3033,6 @@ pub fn cTypeBitSize(target: Target, c_type: CType) u16 {
             },
         },
 
-        .bridgeos,
         .driverkit,
         .ios,
         .macos,
@@ -3069,10 +3056,7 @@ pub fn cTypeBitSize(target: Target, c_type: CType) u16 {
             },
             .longlong, .ulonglong, .double => return 64,
             .longdouble => switch (target.cpu.arch) {
-                .aarch64 => switch (target.os.tag) {
-                    .bridgeos => return 128,
-                    else => return 64,
-                },
+                .aarch64 => return 64,
                 .x86 => switch (target.abi) {
                     .android => return 64,
                     else => return 80,

src/codegen/llvm.zig

@@ -167,7 +167,6 @@ pub fn targetTriple(allocator: Allocator, target: std.Target) ![]const u8 {
         .aix,
         .zos,
         => "ibm",
-        .bridgeos,
         .driverkit,
         .ios,
         .macos,
@@ -218,7 +217,6 @@ pub fn targetTriple(allocator: Allocator, target: std.Target) ![]const u8 {
         .hurd => "hurd",
         .wasi => "wasi",
         .emscripten => "emscripten",
-        .bridgeos => "bridgeos",
         .macos => "macosx",
         .ios => "ios",
         .tvos => "tvos",
@@ -340,7 +338,6 @@ pub fn targetOs(os_tag: std.Target.Os.Tag) llvm.OSType {
         .driverkit => .DriverKit,
         .vulkan => .Vulkan,
         .serenity => .Serenity,
-        .bridgeos => .BridgeOS,
 
         .opengl,
         .plan9,

src/link/MachO.zig

@@ -3539,7 +3539,7 @@ pub fn requiresCodeSig(self: MachO) bool {
     const target = self.getTarget();
     return switch (target.cpu.arch) {
         .aarch64 => switch (target.os.tag) {
-            .bridgeos, .driverkit, .macos => true,
+            .driverkit, .macos => true,
             .ios, .tvos, .visionos, .watchos => target.abi == .simulator,
             else => false,
         },
@@ -4143,7 +4143,6 @@ pub const Platform = struct {
                 const cmd = lc.cast(macho.build_version_command).?;
                 return .{
                     .os_tag = switch (cmd.platform) {
-                        .BRIDGEOS => .bridgeos,
                         .DRIVERKIT => .driverkit,
                         .IOS, .IOSSIMULATOR => .ios,
                         .MACCATALYST => .ios,
@@ -4191,11 +4190,7 @@ pub const Platform = struct {
         return .{
             .os_tag = target.os.tag,
             .abi = target.abi,
-            // This should use semver once we determine the version history.
-            .version = if (target.os.tag == .bridgeos)
-                .{ .major = 0, .minor = 0, .patch = 0 }
-            else
-                target.os.version_range.semver.min,
+            .version = target.os.version_range.semver.min,
         };
     }
 
@@ -4205,7 +4200,6 @@ pub const Platform = struct {
 
     pub fn toApplePlatform(plat: Platform) macho.PLATFORM {
         return switch (plat.os_tag) {
-            .bridgeos => .BRIDGEOS,
             .driverkit => .DRIVERKIT,
             .ios => switch (plat.abi) {
                 .macabi => .MACCATALYST,
@@ -4284,7 +4278,6 @@ const SupportedPlatforms = struct {
 // Source: https://github.com/apple-oss-distributions/ld64/blob/59a99ab60399c5e6c49e6945a9e1049c42b71135/src/ld/PlatformSupport.cpp#L52
 // zig fmt: off
 const supported_platforms = [_]SupportedPlatforms{
-    .{ .bridgeos,  .none,      0x010000, 0x010000 },
     .{ .driverkit, .none,      0x130000, 0x130000 },
     .{ .ios,       .none,      0x0C0000, 0x070000 },
     .{ .ios,       .macabi,    0x0D0000, 0x0D0000 },

test/llvm_targets.zig

@@ -2,7 +2,6 @@ const std = @import("std");
 const Cases = @import("src/Cases.zig");
 
 const targets = [_]std.Target.Query{
-    .{ .cpu_arch = .aarch64, .os_tag = .bridgeos, .abi = .none },
     .{ .cpu_arch = .aarch64, .os_tag = .driverkit, .abi = .none },
     .{ .cpu_arch = .aarch64, .os_tag = .freebsd, .abi = .none },
     .{ .cpu_arch = .aarch64, .os_tag = .freestanding, .abi = .none },