================
@@ -251,6 +253,15 @@ bool RISCVABIInfo::detectFPCCEligibleStructHelper(QualType
Ty, CharUnits CurOff,
// bitwidth is XLen or less.
if (getContext().getTypeSize(QTy) > XLen && BitWidth <= XLen)
QTy = getContext().getIntTypeForBitwidth(XLen, false);
+ // Trim type to alignment/bitwidth if that is possible
+ else if (getContext().getTypeSize(QTy) > Alignment &&
----------------
topperc wrote:
Is the alignment relevant? Should we just round the bitfield size to the
smallest power of 2 always? Even without the packed attribute, gcc -O0 emits
`sb` while clang emits `sw`.
https://github.com/llvm/llvm-project/pull/110690
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