ART: ARM64: Fix saved fpu stack offsets for SIMD.

Fix the bug when a wrong stack offset was recorded for a FP
saved in a SlowPathCode: this happened when graph had SIMD
loops and some regular FP registers live across a slow path.

Test: test-art-target, test-art-host.

Change-Id: I08b32c9877fcd468dafa6027c156e544d730f1f7
5 files changed