rust/tests
Matthias Krüger dde77f7a33
Rollup merge of #117042 - Zalathar:file-table, r=cjgillot
coverage: Emit the filenames section before encoding per-function mappings

When embedding coverage information in LLVM IR (and ultimately in the resulting binary), there are two main things that each CGU needs to emit:

- A single `__llvm_covmap` record containing a coverage header, which mostly consists of a list of filenames used by the CGU's coverage mappings.
- Several `__llvm_covfun` records, one for each instrumented function, each of which contains the hash of the list of filenames in the header.

There is a kind of loose cyclic dependency between the two: we need the hash of the file table before we can emit the covfun records, but we need to traverse all of the instrumented functions in order to build the file table.

The existing code works by processing the individual functions first. It lazily adds filenames to the file table, and stores the mostly-complete function records in a temporary list. After this it hashes the file table, emits the header (containing the file table), and then uses the hash to emit all of the function records.

This PR reverses that order: first we traverse all of the functions (without trying to prepare their function records) to build a *complete* file table, and then emit it immediately. At this point we have the file table hash, so we can then proceed to build and emit all of the function records, without needing to store them in an intermediate list.

---

Along the way, this PR makes some necessary changes that are also worthwhile in their own right:
- We split `FunctionCoverage` into distinct collector/finished phases, which neatly avoids some borrow-checker hassles when extracting a function's final expression/mapping data.
- We avoid having to re-sort a function's mappings when preparing the list of filenames that it uses.
2023-10-23 08:12:39 +02:00
..
assembly Auto merge of #116037 - wesleywiser:stack_protector_test_windows, r=cuviper 2023-10-19 07:50:09 +00:00
auxiliary
codegen Rename lots of files that had generator in their name 2023-10-20 21:14:02 +00:00
codegen-units Automatically enable cross-crate inlining for small functions 2023-10-17 19:53:51 -04:00
coverage-map coverage: Handle fn signature spans more consistently near ? 2023-10-21 11:53:27 +11:00
debuginfo s/generator/coroutine/ 2023-10-20 21:14:01 +00:00
incremental Bless incremental tests. 2023-10-06 15:46:11 +00:00
mir-opt s/generator/coroutine/ 2023-10-20 21:14:01 +00:00
pretty Preserve unicode escapes in format string literals when pretty-printing AST 2023-10-16 21:20:21 +02:00
run-coverage coverage: Handle fn signature spans more consistently near ? 2023-10-21 11:53:27 +11:00
run-coverage-rustdoc Tidy up some awkwardly-placed comments in tests 2023-08-26 14:35:34 +10:00
run-make coverage: Emit the filenames section before encoding per-function mappings 2023-10-22 23:17:15 +11:00
run-make-fulldeps Add Config::hash_untracked_state callback 2023-10-14 15:54:26 +00:00
run-pass-valgrind
rustdoc rustdoc: move ICE test to rustdoc-ui 2023-10-16 18:02:11 -07:00
rustdoc-gui Auto merge of #115948 - notriddle:notriddle/logo-lockup, r=fmease 2023-10-11 06:28:36 +00:00
rustdoc-js Add regression test for #115480 2023-10-11 11:41:39 +02:00
rustdoc-js-std rustdoc: update test cases for changes to the printing style 2023-09-21 15:16:44 -07:00
rustdoc-json Fix rustdoc-json tests 2023-08-23 11:52:49 -07:00
rustdoc-ui s/generator/coroutine/ 2023-10-20 21:14:01 +00:00
ui Auto merge of #115324 - francorbacho:master, r=davidtwco 2023-10-23 00:51:35 +00:00
ui-fulldeps Auto merge of #116932 - Kobzol:fix-stage1-tests, r=Mark-Simulacrum 2023-10-22 02:00:29 +00:00
COMPILER_TESTS.md