[PATCH v2 0/2] MR93: Draft: vkd3d-shader/hlsl: Fix assumptions in add_load_index() and add_load_component().

[Francisco Casas (＠fcasas)]

Currently, we can't use `add_load_index()` or `add_load_component()` on the loads to the `"retval"` variables that come from `add_call()` because these functions assume that the loaded value (`var_instr`) won't change between its location and the location and the new load to be created.

We can't get rid of this assumptions either, because, at least
`add_load_index()` may be used in the lhs of an assignment, and in that case we
can't store to the "deref" synthetic:
```
x[0] = 20;
```

Here I implemented the alternative solution of copying `"retval"` into a synthetic variable after each function call, but we may want to discuss this approach.

--
  v2:  
https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/93