ART: Clean up arm64 kNumberOfXRegisters usage.

Avoid undefined behavior for arm64 stemming from 1u << 32 in
loops with upper bound kNumberOfXRegisters.

Create iterators for enumerating bits in an integer either
from high to low or from low to high and use them for
<arch>Context::FillCalleeSaves() on all architectures.

Refactor runtime/utils.{h,cc} by moving all bit-fiddling
functions to runtime/base/bit_utils.{h,cc} (together with
the new bit iterators) and all time-related functions to
runtime/base/time_utils.{h,cc}. Improve test coverage and
fix some corner cases for the bit-fiddling functions.

Bug: 13925192
Change-Id: I704884dab15b41ecf7a1c47d397ab1c3fc7ee0f7

1 files changed, 0 insertions, 1 deletions

diff --git a/patchoat/patchoat.h b/patchoat/patchoat.h
index 86f9118e2e..8f16f6b283 100644
--- a/patchoat/patchoat.h
+++ b/patchoat/patchoat.h
@@ -25,7 +25,6 @@
 #include "gc/accounting/space_bitmap.h"
 #include "gc/heap.h"
 #include "os.h"
-#include "utils.h"
 
 namespace art {