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nac3core: do not get llvm value too eagerly for kernel invariant

escape-analysis
ychenfo 2022-03-31 01:06:11 +08:00
parent b8ef44d64e
commit 2edeb31d21
1 changed files with 13 additions and 12 deletions
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25
nac3core/src/codegen/expr.rs
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@ -1002,21 +1002,22 @@ pub fn gen_expr<'ctx, 'a, G: CodeGenerator>(
let resolver = ctx.resolver.clone();
let val = resolver.get_symbol_value(*id, ctx).unwrap();
// if is option, need to cast pointer to handle None
match (
&*ctx.unifier.get_ty(expr.custom.unwrap()),
val.to_basic_value_enum(ctx, generator)?
) {
(TypeEnum::TObj { obj_id, params, .. }, BasicValueEnum::PointerValue(ptr))
match &*ctx.unifier.get_ty(expr.custom.unwrap()) {
TypeEnum::TObj { obj_id, params, .. }
if *obj_id == ctx.primitives.option.get_obj_id(&ctx.unifier) =>
{
let actual_ptr_ty = ctx.get_llvm_type(
generator,
*params.iter().next().unwrap().1,
)
.ptr_type(AddressSpace::Generic);
ctx.builder.build_bitcast(ptr, actual_ptr_ty, "option_ptr_cast").into()
if let BasicValueEnum::PointerValue(ptr) = val.to_basic_value_enum(ctx, generator)? {
let actual_ptr_ty = ctx.get_llvm_type(
generator,
*params.iter().next().unwrap().1,
)
.ptr_type(AddressSpace::Generic);
ctx.builder.build_bitcast(ptr, actual_ptr_ty, "option_ptr_cast").into()
} else {
unreachable!("option obj must be ptr")
}
}
val => val.1.into(),
_ => val,
}
}
},