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c479bc7f3b
rust/compiler/rustc_codegen_llvm
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Zalathar c479bc7f3b coverage: Attach an optional FunctionCoverageInfo to mir::Body 
This allows coverage information to be attached to the function as a whole when
appropriate, instead of being smuggled through coverage statements in the
function's basic blocks.

As an example, this patch moves the `function_source_hash` value out of
individual `CoverageKind::Counter` statements and into the per-function info.

When synthesizing unused functions for coverage purposes, the absence of this
info is taken to indicate that a function was not eligible for coverage and
should not be synthesized.
2023-10-18 21:20:29 +11:00
..
src coverage: Attach an optional FunctionCoverageInfo to mir::Body 2023-10-18 21:20:29 +11:00
Cargo.toml Upgrade Object and related deps 2023-08-14 23:05:45 +08:00
messages.ftl allow LTO on proc-macro crates with -Zdylib-lto 2023-09-23 17:08:43 +03:00
README.md mv compiler to compiler/ 2020-08-30 18:45:07 +03:00

README.md

The codegen crate contains the code to convert from MIR into LLVM IR, and then from LLVM IR into machine code. In general it contains code that runs towards the end of the compilation process.

For more information about how codegen works, see the rustc dev guide.