The change in gcov-io.h is from a different patch. David
https://codereview.appspot.com/6968046/diff/1/gcc/gcov-io.c File gcc/gcov-io.c (right): https://codereview.appspot.com/6968046/diff/1/gcc/gcov-io.c#newcode688 gcc/gcov-io.c:688: Have you compared this with this impl: while (x) { c++; x&=(x-1) } return c; https://codereview.appspot.com/6968046/
