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Sema: validateArrayInit detect bitcast before store

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This commit is contained in:
Veikka Tuominen 2022-06-13 11:40:20 +03:00
parent d506275a06
commit ffa6f895ff
1 changed files with 26 additions and 0 deletions
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26
src/Sema.zig
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@ -3795,6 +3795,32 @@ fn zirValidateArrayInit(
}
continue;
},
.bitcast => {
// %a = bitcast(*arr_ty, %array_base)
// %b = ptr_elem_ptr(%a, %index)
// %c = bitcast(*elem_ty, %b)
// %d = store(%c, %val)
if (air_datas[next_air_inst].ty_op.operand != elem_ptr_air_ref) {
array_is_comptime = false;
continue;
}
const store_inst = block.instructions.items[block_index + 2];
if (air_tags[store_inst] != .store) {
array_is_comptime = false;
continue;
}
const bin_op = air_datas[store_inst].bin_op;
if (bin_op.lhs != Air.indexToRef(next_air_inst)) {
array_is_comptime = false;
continue;
}
if (try sema.resolveMaybeUndefValAllowVariables(block, elem_src, bin_op.rhs)) |val| {
element_vals[i] = val;
} else {
array_is_comptime = false;
}
continue;
},
else => {
array_is_comptime = false;
continue;