Add new tt-muncher benchmark.

collector/benchmarks/README.md

@@ -99,6 +99,8 @@ compiler in interesting ways.
 - **token-stream-stress**: Constructs a long token stream much like the `quote`
   crate does, which caused [quadratic
   behavior](https://github.com/rust-lang/rust/issues/65080) in the past.
+- **tt-muncher**: Calls a quadratic TT muncher macro (based on `quote::quote!`)
+  with a long input, which stresses macro expansion.
 - **tuple-stress**: Contains a single array of 65,535 nested `(i32, (f64, f64,
   f64))` tuples. The data was extracted and reduced from a [program dealing
   with grid coordinates](https://github.com/urschrei/ostn15_phf) that was

collector/benchmarks/tt-muncher/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "tt-muncher"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+quote = { path = "./quote-1.0.17-modified" }
+
+[workspace]

collector/benchmarks/tt-muncher/perf-config.json

@@ -0,0 +1,4 @@
+{
+    "touch_file": "src/main.rs",
+    "category": "secondary"
+}

collector/benchmarks/tt-muncher/quote-1.0.17-modified/.cargo_vcs_info.json

@@ -0,0 +1,6 @@
+{
+  "git": {
+    "sha1": "0ec6e20dc9c448d53a0c6d66a76a4cd8f2126d03"
+  },
+  "path_in_vcs": ""
+}

collector/benchmarks/tt-muncher/quote-1.0.17-modified/.clippy.toml

@@ -0,0 +1 @@
+msrv = "1.31.0"

collector/benchmarks/tt-muncher/quote-1.0.17-modified/.github/FUNDING.yml

@@ -0,0 +1 @@
+github: dtolnay

collector/benchmarks/tt-muncher/quote-1.0.17-modified/.github/workflows/ci.yml

@@ -0,0 +1,62 @@
+name: CI
+
+on:
+  push:
+  pull_request:
+  schedule: [cron: "40 1 * * *"]
+
+env:
+  RUSTFLAGS: '-Dwarnings'
+
+jobs:
+  test:
+    name: Rust ${{matrix.rust}}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        rust: [stable, beta, 1.36.0]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{matrix.rust}}
+      - run: cargo test
+
+  nightly:
+    name: Rust nightly
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dtolnay/rust-toolchain@nightly
+        with:
+          components: rust-src
+      - run: cargo test
+      - run: cargo update -Z minimal-versions
+      - run: cargo build
+
+  msrv:
+    name: Rust 1.31.0
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dtolnay/[email protected]
+      - run: cargo check
+
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request'
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dtolnay/rust-toolchain@clippy
+      - run: cargo clippy --tests -- -Dclippy::all -Dclippy::pedantic
+
+  outdated:
+    name: Outdated
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request'
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dtolnay/install@cargo-outdated
+      - run: cargo outdated --exit-code 1

collector/benchmarks/tt-muncher/quote-1.0.17-modified/.gitignore

@@ -0,0 +1,2 @@
+/target
+/Cargo.lock

collector/benchmarks/tt-muncher/quote-1.0.17-modified/Cargo.toml

@@ -0,0 +1,45 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2018"
+rust-version = "1.31"
+name = "quote"
+version = "1.0.17"
+authors = ["David Tolnay <[email protected]>"]
+autobenches = false
+description = "Quasi-quoting macro quote!(...)"
+documentation = "https://docs.rs/quote/"
+readme = "README.md"
+keywords = ["syn"]
+categories = ["development-tools::procedural-macro-helpers"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/dtolnay/quote"
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[dependencies.proc-macro2]
+version = "1.0.36"
+default-features = false
+
+# This is not needed for the `tt-muncher` benchmark.
+#[dev-dependencies.rustversion]
+#version = "1.0"
+
+# This is not needed for the `tt-muncher` benchmark.
+#[dev-dependencies.trybuild]
+#version = "1.0.52"
+#features = ["diff"]
+
+[features]
+default = ["proc-macro"]
+proc-macro = ["proc-macro2/proc-macro"]