ARM: Optimize div/rem when dividend is compared with a non-negative
When a divisor is a positive constant and a dividend is compared with a
non-negative value, the result of the comparison can guarantee that the
dividend is non-negative. In such a case there is no need to generate
instructions correcting the result of div/rem.
The CL implements this optimization for ARM32/ARM64.
Test: 411-checker-hdiv-hrem-pow2
Test: 411-checker-hdiv-hrem-const
Test: test.py --host --optimizing --jit --gtest --interpreter
Test: test.py -target --optimizing --jit --interpreter
Test: run-gtests.sh
Change-Id: If1dc1389f6e34d2be3480ef620a626f389ca53a5
6 files changed