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have zig allocate all refcounts

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This commit is contained in:
Brendan Hansknecht 2022-04-01 14:06:28 -07:00
parent 805e4ef5d3
commit 577282ced3
6 changed files with 32 additions and 88 deletions
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20
compiler/gen_llvm/src/llvm/refcounting.rs
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@ -23,17 +23,6 @@ use roc_target::TargetInfo;
use super::build::load_roc_value;
use super::convert::{argument_type_from_layout, argument_type_from_union_layout};
/// "Infinite" reference count, for static values
/// Ref counts are encoded as negative numbers where isize::MIN represents 1
pub const REFCOUNT_MAX: usize = 0_usize;
pub fn refcount_1(ctx: &Context, target_info: TargetInfo) -> IntValue<'_> {
match target_info.ptr_width() {
roc_target::PtrWidth::Bytes4 => ctx.i32_type().const_int(i32::MIN as u64, false),
roc_target::PtrWidth::Bytes8 => ctx.i64_type().const_int(i64::MIN as u64, false),
}
}
pub struct PointerToRefcount<'ctx> {
value: PointerValue<'ctx>,
}
@ -96,7 +85,14 @@ impl<'ctx> PointerToRefcount<'ctx> {
pub fn is_1<'a, 'env>(&self, env: &Env<'a, 'ctx, 'env>) -> IntValue<'ctx> {
let current = self.get_refcount(env);
let one = refcount_1(env.context, env.target_info);
let one = match env.target_info.ptr_width() {
roc_target::PtrWidth::Bytes4 => {
env.context.i32_type().const_int(i32::MIN as u64, false)
}
roc_target::PtrWidth::Bytes8 => {
env.context.i64_type().const_int(i64::MIN as u64, false)
}
};
env.builder
.build_int_compare(IntPredicate::EQ, current, one, "is_one")