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nac3core: codegen fix empty list llvm type

escape-analysis
ychenfo 2021-12-30 05:09:21 +08:00
parent 2822c613ef
commit 7193e3f328
1 changed files with 9 additions and 1 deletions
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10
nac3core/src/codegen/expr.rs
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@ -657,7 +657,15 @@ pub fn gen_expr<'ctx, 'a, G: CodeGenerator>(
.iter()
.map(|x| generator.gen_expr(ctx, x).unwrap().to_basic_value_enum(ctx, generator))
.collect_vec();
let ty = if elements.is_empty() { int32.into() } else { elements[0].get_type() };
let ty = if elements.is_empty() {
if let TypeEnum::TList { ty } = &*ctx.unifier.get_ty(expr.custom.unwrap()) {
ctx.get_llvm_type(generator, *ty)
} else {
unreachable!()
}
} else {
elements[0].get_type()
};
let length = generator.get_size_type(ctx.ctx).const_int(elements.len() as u64, false);
let arr_str_ptr = allocate_list(generator, ctx, ty, length);
let arr_ptr = ctx.build_gep_and_load(arr_str_ptr, &[zero, zero]).into_pointer_value();