Fix and re-enable some rustc tests

* Set `config.opts.trimmed_def_paths` to `GoodPath` to trim def paths in
  error messages as expected by the rustc test suite
* Fix `$SRC_DIR` normalization for out of tree compiled standard library

Author: bjorn3

scripts/setup_rust_fork.sh

@@ -53,9 +53,28 @@ index 887d27fd6dca4..2c2239f2b83d1 100644
 
      let rustc_has_profiler_support = env::var_os("RUSTC_PROFILER_SUPPORT").is_some();
 
+diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
+index 8431aa7b818..a3ff7e68ce5 100644
+--- a/src/tools/compiletest/src/runtest.rs
++++ b/src/tools/compiletest/src/runtest.rs
+@@ -3489,11 +3489,7 @@ fn normalize_output(&self, output: &str, custom_rules: &[(String, String)]) -> S
+             .join("library");
+         normalize_path(&src_dir, "$(echo '$SRC_DIR')");
+
+-        if let Some(virtual_rust_source_base_dir) =
+-            option_env!("CFG_VIRTUAL_RUST_SOURCE_BASE_DIR").map(PathBuf::from)
+-        {
+-            normalize_path(&virtual_rust_source_base_dir.join("library"), "$(echo '$SRC_DIR')");
+-        }
++        normalize_path(&Path::new("$(cd ../build_sysroot/sysroot_src/library; pwd)"), "$(echo '$SRC_DIR')");
+
+         // Paths into the build directory
+         let test_build_dir = &self.config.build_base;
 EOF
 
 cat > config.toml <<EOF
+changelog-seen = 2
+
 [llvm]
 ninja = false
 

scripts/test_rustc_tests.sh

@@ -72,15 +72,7 @@ rm -r src/test/run-make/emit-named-files # requires full --emit support
 
 rm -r src/test/run-pass-valgrind/unsized-locals
 
-rm src/test/ui/json-bom-plus-crlf-multifile.rs # differing warning
-rm src/test/ui/json-bom-plus-crlf.rs # same
 rm src/test/ui/intrinsics/const-eval-select-x86_64.rs # same
-rm src/test/ui/match/issue-82392.rs # differing error
-rm src/test/ui/consts/min_const_fn/address_of_const.rs # same
-rm src/test/ui/consts/issue-miri-1910.rs # same
-rm src/test/ui/generic-associated-types/bugs/issue-80626.rs # same
-rm src/test/ui/generic-associated-types/bugs/issue-89008.rs # same
-rm src/test/ui/chalkify/bugs/async.rs # same
 rm src/test/ui/type-alias-impl-trait/cross_crate_ice*.rs # requires removed aux dep
 
 rm src/test/ui/allocator/no_std-alloc-error-handler-default.rs # missing rust_oom definition

src/base.rs

@@ -4,6 +4,7 @@ use rustc_ast::InlineAsmOptions;
 use rustc_index::vec::IndexVec;
 use rustc_middle::ty::adjustment::PointerCast;
 use rustc_middle::ty::layout::FnAbiOf;
+use rustc_middle::ty::print::with_no_trimmed_paths;
 
 use indexmap::IndexSet;
 
@@ -258,7 +259,9 @@ fn codegen_fn_content(fx: &mut FunctionCx<'_, '_, '_>) {
 
         if fx.clif_comments.enabled() {
             let mut terminator_head = "\n".to_string();
-            bb_data.terminator().kind.fmt_head(&mut terminator_head).unwrap();
+            with_no_trimmed_paths!({
+                bb_data.terminator().kind.fmt_head(&mut terminator_head).unwrap();
+            });
             let inst = fx.bcx.func.layout.last_inst(block).unwrap();
             fx.add_comment(inst, terminator_head);
         }

src/bin/cg_clif.rs

@@ -13,7 +13,7 @@ use std::panic;
 
 use rustc_data_structures::profiling::{get_resident_set_size, print_time_passes_entry};
 use rustc_interface::interface;
-use rustc_session::config::ErrorOutputType;
+use rustc_session::config::{ErrorOutputType, TrimmedDefPaths};
 use rustc_session::early_error;
 use rustc_target::spec::PanicStrategy;
 
@@ -55,6 +55,8 @@ impl rustc_driver::Callbacks for CraneliftPassesCallbacks {
         config.opts.maybe_sysroot = Some(config.opts.maybe_sysroot.clone().unwrap_or_else(|| {
             std::env::current_exe().unwrap().parent().unwrap().parent().unwrap().to_owned()
         }));
+
+        config.opts.trimmed_def_paths = TrimmedDefPaths::GoodPath;
     }
 }