[CBP] Pointer frontend changes + groupshared pointer support (#7848)

Resolves #7628
Resolves: #8197

Primary Goals:
1. Add `Access` to pointer
2. AddressSpace::GroupShared support for pointers (SPIR-V)
3. Add `__getAddress()` to replace `&`
* `&` is not updated to `require(cpu)` since slangpy uses `&`. This
means we must: (1) merge PR; (2) replace `&` with `__getAddress()`; (3)
add `require(cpu)` to `&`

Changes:
* Added to `Ptr` the `Access` generic argument & logic (for
`Access::Read`).
* Moved the generic argument `AddressSpace` from `Ptr` to the end of the
type.
* Added pointer casting support between any `Ptr` as long as the
`AddressSpace` is the same
* Disallow globallycoherent T* and coherent T*
* Disallow const T*, T const*, and const T*
* Fixed .natvis display of `ConstantValue` `ValOperandNode`
* Support generic resolution of type-casted integers
* Added `VariablePointer` emitting for spirv + other minor logic needed
for groupshared pointers

Breaking Changes:
* Anyone using the `AddressSpace` of `Ptr` will now have to account for
the `Access` argument
* we disallow various syntax paired with `Ptr` and `T*`

---------

Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/spirv/pointer-from-user-guide.slang b/tests/spirv/pointer-from-user-guide.slang
index 662579c2b..115530b2b 100644
--- a/tests/spirv/pointer-from-user-guide.slang
+++ b/tests/spirv/pointer-from-user-guide.slang
@@ -15,7 +15,7 @@ float test(MyType* pObj)
 {
     //SPV: OpTypePointer
     MyType* pNext = pObj + 1;
-    MyType* pNext2 = &pNext[1];
+    MyType* pNext2 = __getAddress(pNext[1]);
     return pNext.a + pNext->a + (*pNext2).a + pNext2[0].a;
 }