================
@@ -15917,12 +15917,15 @@ struct PaddingCalculator {
const uint64_t DeclaredSizeInBits = Field->getBitWidthValue();
- // Handle over-sized bitfields:
- // unsigned char a : 12;
- // In this case, DeclaredSizeInBits is 12, but the actually occupied bit
- // size is 8, while the remaining 4 bits are padding.
+ // Oversized bit-fields (declared width larger than the field type) keep
+ // only the type's width as the value container. The extra declared bits
+ // are padding and follow that container (Itanium C++ ABI 2.4).
----------------
xiongzile wrote:
Sorry I missed it. Now the entire reference is added
https://github.com/llvm/llvm-project/pull/225494
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