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WASI phase 3: LLVM codegen for wasm32-wasip2 #11378
Description
Part of #11375.
perry-codegen/src/inprocess.rsinitializes only aarch64 and x86; add the WebAssembly backend (and confirm the linked LLVM ships it)- roots: take the existing shadow-stack fallback (no frame walker on wasm), and make sure
PERRY_RS4GC/ stack-map emission is refused cleanly - exceptions: generated
try/throwuses setjmp/longjmp → LLVM wasm SjLj lowering on the exception-handling proposal - audit inline IR for LP64 constants not routed through
target_layout.rs(heap_addr_upper_bound_exclusive, header sizes)
Activity
--target wasi, wasm32-wasip2) #11375perry-codegen tests: stop compiling arm64_32 through compile_module
perry-runtime: build for ILP32 targets; refuse ILP32 codegen (#11376)
perry-codegen tests: stop compiling arm64_32 through compile_module
perry-runtime: build for ILP32 targets; refuse ILP32 codegen (#11376)
perry-codegen tests: stop compiling arm64_32 through compile_module
perry-runtime: build for wasm32-wasip2 (WASI phase 2a, #11377)
perry-runtime: build for wasm32-wasip2 (WASI phase 2a, #11377)
scripts: runtime ABI checker (WASI phase 3a, #11378)
scripts: runtime ABI checker (WASI phase 3a, #11378)
perry-codegen: wasm32 WASI lowering behind `target-wasi` (phase 3b, #…
perry-codegen: wasm32 WASI lowering behind `target-wasi` (phase 3b, #…
WASI: link `perry compile --target wasi` into a runnable component
WASI: link `perry compile --target wasi` into a runnable component
WASI: link `perry compile --target wasi` into a runnable component
WASI: link `perry compile --target wasi` into a runnable component
WASI: link `perry compile --target wasi` into a runnable component
proggeramlug commentedon Oct 12, 2026
Done. The WebAssembly LLVM backend is initialised in inprocess.rs, wasm32 lowering landed (5f4ca1e), and the WASI acceptance programs including exceptions and GC run under a WASI runtime in CI (#11413, #12208). Remaining WASI work is in #11375 and #11380.