[llvm] [LLVM] [MC] Update frame layout & CFI generation to handle frames larger than 2gb (PR #99263)

[Wesley Wiser via llvm-commits]

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@@ -619,44 +619,44 @@ class MCCFIInstruction {
 
   /// .cfi_window_save SPARC register window is saved.
   static MCCFIInstruction createWindowSave(MCSymbol *L, SMLoc Loc = {}) {
-    return MCCFIInstruction(OpWindowSave, L, 0, 0, Loc);
+    return MCCFIInstruction(OpWindowSave, L, 0, INT64_C(0), Loc);
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wesleywiser wrote:

Looks like that doesn't work on Windows:

```
C:\ws\src\llvm\include\llvm/MC/MCDwarf.h(622): error C2440: '<function-style-cast>': cannot convert from 'initializer list' to 'llvm::MCCFIInstruction'
C:\ws\src\llvm\include\llvm/MC/MCDwarf.h(622): note: No constructor could take the source type, or constructor overload resolution was ambiguous
```

I'm going to put this back to `INT64_C(0)` for now but open to other suggestions! 

https://github.com/llvm/llvm-project/pull/99263