[llvm] [HWASAN] Implement selective instrumentation based on profiling information (PR #83503)

[Simon Pilgrim via llvm-commits]

RKSimon wrote:

@kstoimenov  @vitalybuka  This appears to be breaking some bots: 

https://lab.llvm.org/buildbot/#/builders/124/builds/9846
Failed Tests (5):
  LLVM :: CodeGen/AArch64/shufflevector.ll
  LLVM :: CodeGen/Hexagon/loop_align_count.ll
  LLVM :: CodeGen/Hexagon/loop_align_count.mir
  LLVM :: Instrumentation/HWAddressSanitizer/pgo-opt-out-no-ps.ll
  LLVM :: Instrumentation/HWAddressSanitizer/pgo-opt-out.ll

https://github.com/llvm/llvm-project/pull/83503