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| author | Yuki Okushi <huyuumi.dev+love@gmail.com> | 2023-01-11 14:18:52 +0900 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-01-11 14:18:52 +0900 |
| commit | 8d7a06aece82336d3c23c6e925e11b96aa85f63f (patch) | |
| tree | fc30cc216e03b3d5f4c3051a1c3b01a6b983a2d5 | |
| parent | bf7ea0d11b07d84cfbd18feac0ed59e6d1da87ab (diff) | |
| parent | 836ef6162dfe11c603854851a4a9b5c5e856f0d5 (diff) | |
| download | rust-8d7a06aece82336d3c23c6e925e11b96aa85f63f.tar.gz rust-8d7a06aece82336d3c23c6e925e11b96aa85f63f.zip | |
Rollup merge of #105194 - tmiasko:cleanup-kinds, r=davidtwco
Add comment to cleanup_kinds based on the original commit message 1ae7ae0c1c7ed68c616273f245647afa47f3cbde
| -rw-r--r-- | compiler/rustc_codegen_ssa/src/mir/analyze.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_ssa/src/mir/analyze.rs b/compiler/rustc_codegen_ssa/src/mir/analyze.rs index c7617d2e464..dd1ac2c74ae 100644 --- a/compiler/rustc_codegen_ssa/src/mir/analyze.rs +++ b/compiler/rustc_codegen_ssa/src/mir/analyze.rs @@ -261,6 +261,9 @@ impl CleanupKind { } } +/// MSVC requires unwinding code to be split to a tree of *funclets*, where each funclet can only +/// branch to itself or to its parent. Luckily, the code we generates matches this pattern. +/// Recover that structure in an analyze pass. pub fn cleanup_kinds(mir: &mir::Body<'_>) -> IndexVec<mir::BasicBlock, CleanupKind> { fn discover_masters<'tcx>( result: &mut IndexVec<mir::BasicBlock, CleanupKind>, |