| Issue |
161685
|
| Summary |
[Clang][ByteCode] Add numeric-only `TYPE_SWITCH` to avoid Pointer/MemberPointer instantiation in vector handlers
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
AdityaC4
|
In `InterpBuiltin.cpp`, `TYPE_SWITCH` expands over all `PrimType`s (incl. `PT_Ptr`/`PT_MemberPtr`). For vector extract/insert we need a **numeric-only** dispatch (ints + float). Pointer types don’t have `toAPSInt()` and cause compile errors.
Repro (sketch):
```cpp
PrimType PT = Vec.getFieldDesc()->getPrimType();
TYPE_SWITCH(PT, {
// Integer path needs toAPSInt(); float path pushes Floating.
// Pointer/MemberPointer cases get instantiated and don’t compile.
});
```
Error:
```cpp
error: no member named 'toAPSInt' in 'clang::interp::Pointer'
error: no member named 'toAPSInt' in 'clang::interp::MemberPointer'
```
Expected: A macro that dispatches over ints + float only, excluding Bool/Ptr/MemberPtr/FixedPoint.
Context: Found while adding constexpr for X86 `vec_ext`/`vec_set`. PR: #161302
Current workaround: `if (PT == PT_Float) { … } else { INT_TYPE_SWITCH_NO_BOOL(PT, …) }`
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