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

[Alexander Richardson via llvm-commits]

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@@ -364,7 +373,7 @@ class DataLayout {
 
   /// Returns the maximum index size over all address spaces.
   unsigned getMaxIndexSizeInBits() const {
-    return getMaxIndexSize() * 8;
+    return getMaxIndexSize() * ByteWidth;
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arichardson wrote:

Should there be something like a DL.bytesToBits() helper function? The inverse is a bit more tricky since we need to define how to handle non-multiples (round down, round up, assert).

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