Auto merge of rust-lang#122338 - workingjubilee:rollup-xzpt4v4, r=workingjubilee

Rollup of 15 pull requests

Successful merges:

 - rust-lang#116791 (Allow codegen backends to opt-out of parallel codegen)
 - rust-lang#116793 (Allow targets to override default codegen backend)
 - rust-lang#117458 (LLVM Bitcode Linker: A self contained linker for nvptx and other targets)
 - rust-lang#119385 (Fix type resolution of associated const equality bounds (take 2))
 - rust-lang#121438 (std support for wasm32 panic=unwind)
 - rust-lang#121893 (Add tests (and a bit of cleanup) for interior mut handling in promotion and const-checking)
 - rust-lang#122080 (Clarity improvements to `DropTree`)
 - rust-lang#122152 (Improve diagnostics for parenthesized type arguments)
 - rust-lang#122166 (Remove the unused `field_remapping` field from `TypeLowering`)
 - rust-lang#122249 (interpret: do not call machine read hooks during validation)
 - rust-lang#122299 (Store backtrace for `must_produce_diag`)
 - rust-lang#122318 (Revision-related tweaks for next-solver tests)
 - rust-lang#122320 (Use ptradd for vtable indexing)
 - rust-lang#122328 (unix_sigpipe: Replace `inherit` with `sig_dfl` in syntax tests)
 - rust-lang#122330 (bootstrap readme: fix, improve, update)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

Cargo.lock

@@ -2265,6 +2265,17 @@ checksum = "f9d642685b028806386b2b6e75685faadd3eb65a85fff7df711ce18446a422da"
 name = "lld-wrapper"
 version = "0.1.0"
 
+[[package]]
+name = "llvm-bitcode-linker"
+version = "0.0.1"
+dependencies = [
+ "anyhow",
+ "clap",
+ "thiserror",
+ "tracing",
+ "tracing-subscriber",
+]
+
 [[package]]
 name = "lock_api"
 version = "0.4.11"

Cargo.toml

@@ -34,6 +34,7 @@ members = [
   "src/tools/expand-yaml-anchors",
   "src/tools/jsondocck",
   "src/tools/jsondoclint",
+  "src/tools/llvm-bitcode-linker",
   "src/tools/html-checker",
   "src/tools/bump-stage0",
   "src/tools/replace-version-placeholder",