[llvm] [IRBuilder] Limit created masked load/store alignment to valid 32bit values (PR #73647)

[Guillaume Chatelet via llvm-commits]

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@@ -584,7 +584,8 @@ CallInst *IRBuilderBase::CreateMaskedLoad(Type *Ty, Value *Ptr, Align Alignment,
   if (!PassThru)
     PassThru = PoisonValue::get(Ty);
   Type *OverloadedTypes[] = { Ty, PtrTy };
-  Value *Ops[] = {Ptr, getInt32(Alignment.value()), Mask, PassThru};
+  unsigned Align32 = std::min<uint64_t>(Alignment.value(), 0x80000000ULL);
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gchatelet wrote:

I would rather use:
```
const Align LimitedAlign = std::min(Alignment, Align(32));
Value *Ops[] = {Ptr, getInt32(LimitedAlign.value()), Mask, PassThru};
```

and possibly encapsulate the logic into a function instead of copy/pasting the code.

https://github.com/llvm/llvm-project/pull/73647