cg: use thorin instead of llvm-dwp

`thorin` is a Rust implementation of a DWARF packaging utility that
supports reading DWARF objects from archive files (i.e. rlibs) and
therefore is better suited for integration into rustc.

Signed-off-by: David Wood <david.wood@huawei.com>

Author: davidtwco

Cargo.lock

@@ -9,7 +9,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3e61f2b7f93d2c7d2b08263acaa4a363b3e276806c68af6134c44f523bf1aacd"
 dependencies = [
  "compiler_builtins",
- "gimli",
+ "gimli 0.25.0",
  "rustc-std-workspace-alloc",
  "rustc-std-workspace-core",
 ]
@@ -87,9 +87,9 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.34"
+version = "1.0.51"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bf8dcb5b4bbaa28653b647d8c77bd4ed40183b48882e130c1f1ffb73de069fd7"
+checksum = "8b26702f315f53b6071259e15dd9d64528213b44d61de1ec926eca7715d62203"
 
 [[package]]
 name = "array_tool"
@@ -1158,6 +1158,12 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e88a8acf291dafb59c2d96e8f59828f3838bb1a70398823ade51a84de6a6deed"
 
+[[package]]
+name = "fallible-iterator"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4443176a9f2c162692bd3d352d745ef9413eec5782a80d8fd6f8a1ac692a07f7"
+
 [[package]]
 name = "filetime"
 version = "0.2.14"
@@ -1446,6 +1452,17 @@ dependencies = [
  "rustc-std-workspace-core",
 ]
 
+[[package]]
+name = "gimli"
+version = "0.26.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78cc372d058dcf6d5ecd98510e7fbc9e5aec4d21de70f65fea8fecebcd881bd4"
+dependencies = [
+ "fallible-iterator",
+ "indexmap",
+ "stable_deref_trait",
+]
+
 [[package]]
 name = "git2"
 version = "0.13.23"
@@ -2339,6 +2356,18 @@ dependencies = [
  "rustc-std-workspace-core",
 ]
 
+[[package]]
+name = "object"
+version = "0.27.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67ac1d3f9a1d3616fd9a60c8d74296f22406a238b6a72f5cc1e6f314df4ffbf9"
+dependencies = [
+ "crc32fast",
+ "flate2",
+ "indexmap",
+ "memchr",
+]
+
 [[package]]
 name = "odht"
 version = "0.3.1"
@@ -3725,10 +3754,11 @@ dependencies = [
  "itertools 0.9.0",
  "jobserver",
  "libc",
- "object",
+ "object 0.26.2",
  "pathdiff",
  "regex",
  "rustc_apfloat",
+ "rustc_arena",
  "rustc_ast",
  "rustc_attr",
  "rustc_data_structures",
@@ -3749,6 +3779,7 @@ dependencies = [
  "smallvec",
  "snap",
  "tempfile",
+ "thorin-dwp",
  "tracing",
 ]
 
@@ -4993,7 +5024,7 @@ dependencies = [
  "hermit-abi",
  "libc",
  "miniz_oxide",
- "object",
+ "object 0.26.2",
  "panic_abort",
  "panic_unwind",
  "profiler_builtins",
@@ -5057,9 +5088,9 @@ checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
 [[package]]
 name = "structopt"
-version = "0.3.16"
+version = "0.3.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de5472fb24d7e80ae84a7801b7978f95a19ec32cb1876faea59ab711eb901976"
+checksum = "40b9788f4202aa75c240ecc9c15c65185e6a39ccdeb0fd5d008b98825464c87c"
 dependencies = [
  "clap",
  "lazy_static",
@@ -5068,9 +5099,9 @@ dependencies = [
 
 [[package]]
 name = "structopt-derive"
-version = "0.4.9"
+version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e0eb37335aeeebe51be42e2dc07f031163fbabfa6ac67d7ea68b5c2f68d5f99"
+checksum = "dcb5ae327f9cc13b68763b5749770cb9e048a99bd9dfdfa58d0cf05d5f64afe0"
 dependencies = [
  "heck",
  "proc-macro-error",
@@ -5249,24 +5280,36 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.20"
+version = "1.0.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7dfdd070ccd8ccb78f4ad66bf1982dc37f620ef696c6b5028fe2ed83dd3d0d08"
+checksum = "854babe52e4df1653706b98fcfc05843010039b406875930a70e4d9644e5c417"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.20"
+version = "1.0.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd80fc12f73063ac132ac92aceea36734f04a1d93c1240c6944e23a3b8841793"
+checksum = "aa32fd3f627f367fe16f893e2597ae3c05020f8bba2666a4e6ea73d377e5714b"
 dependencies = [
  "proc-macro2",
  "quote",
  "syn",
 ]
 
+[[package]]
+name = "thorin-dwp"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "039d1fc0bfdb73910c2702893515580e38c192f47a987bc98ddd38a36f2d953a"
+dependencies = [
+ "gimli 0.26.1",
+ "indexmap",
+ "object 0.27.1",
+ "tracing",
+]
+
 [[package]]
 name = "thread_local"
 version = "1.0.1"
@@ -5394,9 +5437,9 @@ checksum = "360dfd1d6d30e05fda32ace2c8c70e9c0a9da713275777f5a4dbb8a1893930c6"
 
 [[package]]
 name = "tracing"
-version = "0.1.28"
+version = "0.1.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "84f96e095c0c82419687c20ddf5cb3eadb61f4e1405923c9dc8e53a1adacbda8"
+checksum = "375a639232caf30edfc78e8d89b2d4c375515393e7af7e16f01cd96917fb2105"
 dependencies = [
  "cfg-if 1.0.0",
  "pin-project-lite",
@@ -5406,9 +5449,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-attributes"
-version = "0.1.17"
+version = "0.1.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c4f915eb6abf914599c200260efced9203504c4c37380af10cdf3b7d36970650"
+checksum = "f4f480b8f81512e825f337ad51e94c1eb5d3bbdf2b363dcd01e2b19a9ffe3f8e"
 dependencies = [
  "proc-macro2",
  "quote",

compiler/rustc_codegen_ssa/Cargo.toml

@@ -14,12 +14,14 @@ tracing = "0.1"
 libc = "0.2.50"
 jobserver = "0.1.22"
 tempfile = "3.2"
+thorin-dwp = "0.1.1"
 pathdiff = "0.2.0"
 snap = "1"
 smallvec = { version = "1.6.1", features = ["union", "may_dangle"] }
 regex = "1.4"
 
 rustc_serialize = { path = "../rustc_serialize" }
+rustc_arena = { path = "../rustc_arena" }
 rustc_ast = { path = "../rustc_ast" }
 rustc_span = { path = "../rustc_span" }
 rustc_middle = { path = "../rustc_middle" }