MIR inlining checks for impossible condition

[bjorn3]

rust/src/librustc_mir/transform/inline.rs

Lines 218 to 222 in abf2e00

	// Cannot inline generators which haven't been transformed yet
	if callee_body.yield_ty.is_some() {
	debug!(" yield ty present - not inlining");
	return false;
	}

The generator is always transformed, as only the output of optimized_mir is passed to should_inline.

[bjorn3]

@rustbot modify labels: +A-mir +C-cleanup