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Malte Ubl
6ff0b7c2df
Every inline pending-exception check in an executable loaded the runtime's active-cell pointer and then its kind: two dependent loads after each call that may throw, because LLVM must assume any call can change the pointer. Fiber switches restore the active cell before control returns to a synchronous frame (stack switches, eager spawns and generator resumes all swap back to the caller's cell), so the pointer is one value for the whole invocation. Synchronous IR function bodies now load it once in the entry block and each check reads only the kind. The flag lives on the body's BlockBuilder, so adapters and runtime helpers keep the per-check load. Async functions, generators and worker executables (whose checks also fold in the context stop signal) keep the existing form; libraries still test through scr_exc_pending.