Hitting the "expected switch instructions to have been rewritten before stackification" panic in BlockEmitter::emit_instwhen compiling rust enum

[greenhat]

Hitting panic in the BlockEmitter::emit_inst

compiler/codegen/masm/src/codegen/emitter.rs

Lines 246 to 248 in c2053e6

	Instruction::Switch(_) => {
	panic!("expected switch instructions to have been rewritten before stackification")
	}

How to reproduce:

• uncomment expect_masm in types::test_enum integration test added in chore: move integration tests from midenc-frontend-wasm and add MASM expected outputs #280

compiler/tests/integration/src/rust_masm_tests/types.rs

Line 11 in 2ccdf23

// test.expect_masm(expect_file!["../../expected/types/enum.masm"]);

[bitwalker]

Hmm, looks like we never actually lower these to a chain of if/then/else in our pipeline. I'll add this to my TODO for the IR refactoring