[llvm] [DataLayout] Add byte specification (PR #106536)

[Alexander Richardson via llvm-commits]

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@@ -565,13 +575,14 @@ inline LLVMTargetDataRef wrap(const DataLayout *P) {
 class StructLayout final : public TrailingObjects<StructLayout, TypeSize> {
   TypeSize StructSize;
   Align StructAlignment;
+  unsigned ByteWidth;
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arichardson wrote:

Less critical here since we are multiplying not dividing, but maybe always use a shift? In that case we could even use uint8_t to fit it into the padding.

https://github.com/llvm/llvm-project/pull/106536