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Merge pull request #2698 from rtfeldman/i/2696

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Make sure casting to unsigned types performs zero-extension
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Brendan Hansknecht 2022-03-10 20:10:33 -08:00 • committed by GitHub
commit cdf19e3feb
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9 changed files with 67 additions and 16 deletions
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6
compiler/gen_llvm/src/llvm/refcounting.rs
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@ -1778,9 +1778,9 @@ fn modify_refcount_union_help<'a, 'ctx, 'env>(
.build_load(tag_id_ptr, "load_tag_id")
.into_int_value();
let tag_id_u8 = env
.builder
.build_int_cast(tag_id, env.context.i8_type(), "tag_id_u8");
let tag_id_u8 =
env.builder
.build_int_cast_sign_flag(tag_id, env.context.i8_type(), false, "tag_id_u8");
// next, make a jump table for all possible values of the tag_id
let mut cases = Vec::with_capacity_in(tags.len(), env.arena);