[asan] make heavy_uar_test even heavier

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@179306 91177308-0d34-0410-b5e6-96231b3b80d8
[asan] inline flags(), up to 1% perf gain on malloc-intensive code

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@179307 91177308-0d34-0410-b5e6-96231b3b80d8