Add benchmark files and update documentation

Author: Kobzol

collector/compile-benchmarks/README.md

@@ -40,8 +40,9 @@ They mostly consist of real-world crates.
   converting to and from various image formats. Used often in graphics
   programming.
 - **libc-0.2.124**: An interface to `libc`. Contains many declarations of
-  types, constants, and functions, but relatively little normal code. Stresses
-  the parser. A very widely-used crate.
+  types, constants, and functions, but relatively little normal code. Stresses the parser. A very widely-used crate.
+- **libc-0.2.172**: An interface to `libc`. Contains many declarations of
+  types, constants, and functions, but relatively little normal code. Stresses the parser. A very widely-used crate.
 - **nalgebra-0.33.0**: A linear algebra library. It exercises the new trait solver
   in different ways than the old solver.
 - **regex-1.5.5**: A regular expression parser. Used by many Rust programs.

collector/compile-benchmarks/REUSE.toml

@@ -165,6 +165,11 @@ path = "libc-0.2.124/**"
 SPDX-FileCopyrightText = "The Rust Project Developers (see https://thanks.rust-lang.org)"
 SPDX-License-Identifier = "MIT OR Apache-2.0"
 
+[[annotations]]
+path = "libc-0.2.172/**"
+SPDX-FileCopyrightText = "The Rust Project Developers (see https://thanks.rust-lang.org)"
+SPDX-License-Identifier = "MIT OR Apache-2.0"
+
 [[annotations]]
 path = "many-assoc-items/**"
 SPDX-FileCopyrightText = "The Rust Project Developers (see https://thanks.rust-lang.org)"

collector/compile-benchmarks/libc-0.2.172/0-add-fn.patch

@@ -0,0 +1,12 @@
+diff --git a/src/primitives.rs b/src/primitives.rs
+index 668d3340..380e1e06 100644
+--- a/src/primitives.rs
++++ b/src/primitives.rs
+@@ -164,3 +164,7 @@ cfg_if! {
+         // static_assert_eq!(core::mem::align_of::<__uint128_t>(), _ALIGN_128);
+     }
+ }
++
++fn foo() {
++    let a = 5;
++}

collector/compile-benchmarks/libc-0.2.172/Cargo.toml

@@ -184,3 +184,5 @@ path = "tests/const_fn.rs"
 [dependencies.rustc-std-workspace-core]
 version = "1.0.0"
 optional = true
+
+[workspace]

collector/compile-benchmarks/libc-0.2.172/perf-config.json

@@ -0,0 +1,4 @@
+{
+  "artifact": "library",
+  "category": "primary"
+}