tree 4b68ac54ebe5eb334acd25ed79320d86beb05c94
parent 090021389bd01085c623b466feaad601234a4332
author Matthew Maurer <mmaurer@google.com> 1562097887 -0700
committer Matthew Maurer <mmaurer@google.com> 1562100029 +0000

Add support for UBSan's invalid builtin check

This is needed to check calls to __builtin_clz for a zero argument.
All our existing checks were optimized out because the compiler could
statically determine the operand was nonzero.

Bug: 136576760
Change-Id: I4f47e04e58a38c62b0bd87f6051776e5a588cff8