Zap a couple unnecessary loops.
llvm-svn: 134578
diff --git a/clang/lib/AST/ExprConstant.cpp b/clang/lib/AST/ExprConstant.cpp
index df33f7a..cc8c501 100644
--- a/clang/lib/AST/ExprConstant.cpp
+++ b/clang/lib/AST/ExprConstant.cpp
@@ -536,15 +536,7 @@
if (FD->getType()->isReferenceType())
return false;
- // FIXME: This is linear time.
- unsigned i = 0;
- for (RecordDecl::field_iterator Field = RD->field_begin(),
- FieldEnd = RD->field_end();
- Field != FieldEnd; (void)++Field, ++i) {
- if (*Field == FD)
- break;
- }
-
+ unsigned i = FD->getFieldIndex();
Result.Offset += Info.Ctx.toCharUnitsFromBits(RL.getFieldOffset(i));
return true;
}