Revert^2 "Compiler changes for bitstring based type checks."

Add extra output for debugging failures and re-enable
the bitstring type checks.

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing --jit
Test: testrunner.py --host -t 670-bitstring-type-check
Test: Pixel 2 XL boots.
Test: testrunner.py --target --optimizing --jit
Test: testrunner.py --target -t 670-bitstring-type-check
Bug: 64692057
Bug: 26687569

This reverts commit bff7a52e.

Change-Id: I090e241983f3ac6ed8394d842e17716087d169ac