[clang] [CIR] Upstream support for setjmp & longjmp builtins (PR #178989)

[Ayokunle Amodu via cfe-commits]

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@@ -525,6 +525,7 @@ class CIRGenBuilderTy : public cir::CIRBaseBuilderTy {
     return createAlignedLoad(loc, ty, ptr, align.getAsAlign());
   }
 
+  using CIRBaseBuilderTy::createStore;
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ayokunle321 wrote:

Since `CIRGenBuilder` is derived from `CIRBaseBuilderTy` and `CIRGenBuilder` has its own impl. of `createstore`, `CIRBaseBuilderTy`'s `createStore` is hidden. And I needed `CIRBaseBuilderTy`'s `createStore` because it's implementation could take in an `mlir::Value` as a destination address instead of a constructed `Address` with an alignment. 

If i used `CIRGenBuilder`'s `createStore` then I would have had to construct `castBuf` as an `Address` with an alignment but `castBuf` does not need to be aligned.

And so I brought `CIRBaseBuilderTy`'s `createStore` to this scope.

https://github.com/llvm/llvm-project/pull/178989