Auto merge of rust-lang#133955 - bjorn3:cc_pass_arch_only, r=<try>

Pass the arch rather than full target name to windows_registry::find_tool

The full target name can be anything with custom target specs. Passing just the arch wasn't possible before cc 1.2, but is now thanks to rust-lang/cc-rs#1285.

try-job: i686-mingw

Author: bors

compiler/rustc_codegen_ssa/src/back/link.rs

@@ -1021,12 +1021,8 @@ fn link_natively(
                         && (code < 1000 || code > 9999)
                     {
                         let is_vs_installed = windows_registry::find_vs_version().is_ok();
-                        // FIXME(cc-rs#1265) pass only target arch to find_tool()
-                        let has_linker = windows_registry::find_tool(
-                            sess.opts.target_triple.tuple(),
-                            "link.exe",
-                        )
-                        .is_some();
+                        let has_linker =
+                            windows_registry::find_tool(&sess.target.arch, "link.exe").is_some();
 
                         sess.dcx().emit_note(errors::LinkExeUnexpectedError);
                         if is_vs_installed && has_linker {