ARM64: Workaround for the callee saved FP registers and SIMD.

Treat as scheduling barriers those vector instructions whose live
ranges exceed the vectorized loop boundaries. This is a workaround
for the lack of notion of SIMD register in the compiler; around a
call we have to save/restore all live SIMD&FP registers (only
lower 64 bits of SIMD&FP registers are callee saved) so don't
reorder such vector instructions.

Test: 706-checker-scheduler, test-art-host, test-art-target
Bug: 69667779

Change-Id: I31e57518339d41545a0c519f7299afe381a8286c
4 files changed