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Isolate coverage FFI type layouts from their underlying LLVM C++ types

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Zalathar
2023-05-08 13:57:20 +10:00
parent 33a01e2e93
commit 7cab196e7c
3 changed files with 117 additions and 16 deletions
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8
compiler/rustc_codegen_llvm/src/llvm/ffi.rs
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@@ -680,7 +680,9 @@ pub type InlineAsmDiagHandlerTy = unsafe extern "C" fn(&SMDiagnostic, *const c_v
pub mod coverageinfo {
use super::coverage_map;
/// Aligns with [llvm::coverage::CounterMappingRegion::RegionKind](https://github.com/rust-lang/llvm-project/blob/rustc/13.0-2021-09-30/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h#L209-L230)
/// Corresponds to enum `llvm::coverage::CounterMappingRegion::RegionKind`.
///
/// Must match the layout of `LLVMRustCounterMappingRegionKind`.
#[derive(Copy, Clone, Debug)]
#[repr(C)]
pub enum RegionKind {
@@ -714,7 +716,9 @@ pub mod coverageinfo {
/// array", encoded separately), and source location (start and end positions of the represented
/// code region).
///
/// Matches LLVMRustCounterMappingRegion.
/// Corresponds to struct `llvm::coverage::CounterMappingRegion`.
///
/// Must match the layout of `LLVMRustCounterMappingRegion`.
#[derive(Copy, Clone, Debug)]
#[repr(C)]
pub struct CounterMappingRegion {