tree 33ffe07df2b684a8de8cd603c8ab3a4bfed333a1
parent 7cfc9a3a3d87e39611438e4bd178358329573294
author Tim Besard <tim.besard@gmail.com> 1724155955 +0200
committer GitHub <noreply@github.com> 1724155955 +0200
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[LLVM] Add a C API for creating instructions with custom syncscopes. (#104775)

Another upstreaming of C API extensions we have in Julia/LLVM.jl.
Although [we went](https://github.com/maleadt/LLVM.jl/pull/431) with a
string-based API there, here I'm proposing something that's similar to
existing metadata/attribute APIs:
- explicit functions to map syncscope names to IDs, and back
- `LLVM*SyncScope` versions of builder APIs that already take a
`SingleThread` argument: atomic rmw, atomic xchg, fence
- `LLVMGetAtomicSyncScopeID` and `LLVMSetAtomicSyncScopeID` for other
atomic instructions
- testing through `llvm-c-test`'s `--echo` functionality