Compilation: don't build compiler_rt for amdgcn and ubsan_rt for ptx

src/Compilation.zig

@@ -1352,8 +1352,8 @@ pub fn create(gpa: Allocator, arena: Allocator, options: CreateOptions) !*Compil
         // approach, since the ubsan runtime uses quite a lot of the standard library
         // and this reduces unnecessary bloat.
         const ubsan_rt_strat: RtStrat = s: {
-            const is_spirv = options.root_mod.resolved_target.result.cpu.arch.isSpirV();
+            const can_build_ubsan_rt = target_util.canBuildLibUbsanRt(options.root_mod.resolved_target.result);
-            const want_ubsan_rt = options.want_ubsan_rt orelse (!is_spirv and any_sanitize_c == .full and is_exe_or_dyn_lib);
+            const want_ubsan_rt = options.want_ubsan_rt orelse (can_build_ubsan_rt and any_sanitize_c == .full and is_exe_or_dyn_lib);
             if (!want_ubsan_rt) break :s .none;
             if (options.skip_linker_dependencies) break :s .none;
             if (have_zcu) break :s .zcu;
@@ -1768,8 +1768,7 @@ pub fn create(gpa: Allocator, arena: Allocator, options: CreateOptions) !*Compil
     errdefer comp.destroy();
 
     const target = comp.root_mod.resolved_target.result;
-
+    const can_build_compiler_rt = target_util.canBuildLibCompilerRt(target, comp.config.use_llvm, build_options.have_llvm);
-    const capable_of_building_compiler_rt = canBuildLibCompilerRt(target, comp.config.use_llvm);
 
     // Add a `CObject` for each `c_source_files`.
     try comp.c_object_table.ensureTotalCapacity(gpa, options.c_source_files.len);
@@ -1939,7 +1938,7 @@ pub fn create(gpa: Allocator, arena: Allocator, options: CreateOptions) !*Compil
                 comp.remaining_prelink_tasks += 1;
             }
 
-            if (capable_of_building_compiler_rt) {
+            if (can_build_compiler_rt) {
                 if (comp.compiler_rt_strat == .lib) {
                     log.debug("queuing a job to build compiler_rt_lib", .{});
                     comp.queued_jobs.compiler_rt_lib = true;
@@ -6558,22 +6557,6 @@ pub fn dump_argv(argv: []const []const u8) void {
     nosuspend stderr.print("{s}\n", .{argv[argv.len - 1]}) catch {};
 }
 
-fn canBuildLibCompilerRt(target: std.Target, use_llvm: bool) bool {
-    switch (target.os.tag) {
-        .plan9 => return false,
-        else => {},
-    }
-    switch (target.cpu.arch) {
-        .spirv, .spirv32, .spirv64 => return false,
-        else => {},
-    }
-    return switch (target_util.zigBackend(target, use_llvm)) {
-        .stage2_llvm => true,
-        .stage2_x86_64 => if (target.ofmt == .elf or target.ofmt == .macho) true else build_options.have_llvm,
-        else => build_options.have_llvm,
-    };
-}
-
 pub fn getZigBackend(comp: Compilation) std.builtin.CompilerBackend {
     const target = comp.root_mod.resolved_target.result;
     return target_util.zigBackend(target, comp.config.use_llvm);

src/target.zig

@@ -313,6 +313,33 @@ pub fn defaultCompilerRtOptimizeMode(target: std.Target) std.builtin.OptimizeMod
     }
 }
 
+pub fn canBuildLibCompilerRt(target: std.Target, use_llvm: bool, have_llvm: bool) bool {
+    switch (target.os.tag) {
+        .plan9 => return false,
+        else => {},
+    }
+    switch (target.cpu.arch) {
+        .spirv, .spirv32, .spirv64 => return false,
+        // Remove this once https://github.com/ziglang/zig/issues/23714 is fixed
+        .amdgcn => return false,
+        else => {},
+    }
+    return switch (zigBackend(target, use_llvm)) {
+        .stage2_llvm => true,
+        .stage2_x86_64 => if (target.ofmt == .elf or target.ofmt == .macho) true else have_llvm,
+        else => have_llvm,
+    };
+}
+
+pub fn canBuildLibUbsanRt(target: std.Target) bool {
+    switch (target.cpu.arch) {
+        .spirv, .spirv32, .spirv64 => return false,
+        // Remove this once https://github.com/ziglang/zig/issues/23715 is fixed
+        .nvptx, .nvptx64 => return false,
+        else => return true,
+    }
+}
+
 pub fn hasRedZone(target: std.Target) bool {
     return switch (target.cpu.arch) {
         .aarch64,