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reject a lane count that exceeds the bit_set limit

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kalsprite
2026-08-11 20:55:12 -07:00
parent 549bedcff9
commit a594c9960c
1 changed files with 7 additions and 0 deletions
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7
src/check_builtin.cpp
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@@ -1441,6 +1441,13 @@ gb_internal bool check_builtin_simd_operation(CheckerContext *c, Operand *operan
}
i64 num_elems = get_array_type_count(x.type);
// the range is taken from the lane count; it has to meet the same limit a written bit_set does
if (num_elems > 128) {
gbString xs = type_to_string(x.type);
error(x.expr, "'%.*s' would produce a bit_set of %lld bits, exceeding the maximum of 128, got '%s'", LIT(builtin_name), cast(long long)num_elems, xs);
gb_string_free(xs);
return false;
}
Type *result_type = alloc_type_bit_set();
result_type->BitSet.elem = t_int;