fix non-vanilla llvm testing of wasm-backend testcases
fix non-vanilla llvm testing of wasm-backend testcases

yurydelendik/binaryen,ddcc/binaryen,yurydelendik/binaryen,yurydelendik/binaryen,ddcc/binaryen,yurydelendik/binaryen,WebAssembly/binaryen,WebAssembly/binaryen,WebAssembly/binaryen,ddcc/binaryen,WebAssembly/binaryen,ddcc/binaryen,ddcc/binaryen,yurydelendik/binaryen,WebAssembly/binaryen