ELU on LLVM CPU

Exponential Linear Unit

⏳ PENDING — not yet measured

Operation

Operation	ELU (`bpd_elu`)
Formula	f(x) = x if x > 0, else α(exp(x) - 1), α=1.0
Category	Transcendental (exp)

Kernel Specification (Prolog/Logtalk)

This is the backend-neutral op_expr fact that specifies the operation. The same term is lowered to LLVM IR, CUDA C, MLIR, and every other backend — one specification, many targets.

op_expr(bpd_elu,
    sel(le(var, const(0.0)),
        sub(call(exp, var), const(1.0)),
        var)).

Backend

Backend	LLVM CPU (`llvm_cpu`)
Target	cpu
Description	LLVM IR targeting x86-64 CPU. Compiled with llc + clang.

Verification

This (operation, backend) pair has not yet been measured. When the backend emitter and verification infrastructure are ready, this cell will be tested against the PyTorch reference.