+ // If we still couldn't find a reasonable default alignment, fall back
+ // to a simple heuristic that the alignment is the first power of two
+ // greater-or-equal to the store size of the type. This is a reasonable
+ // approximation of reality, and if the user wanted something less
+ // less conservative, they should have specified it explicitly in the data
+ // layout.
+ if (BestMatchIdx == -1) {
+ unsigned Align = getTypeStoreSize(Ty);
+ if (Align & (Align-1))
+ Align = NextPowerOf2(Align);
+ return Align;
+ }
+