Move @CriticalNative arguments in registers.

And spill stack arguments directly to the right location.
Do not spill to the reserved space in the caller's frame.

Preliminary Golem results for art-opt-cc:
                            x86 x86-64    arm  arm64
NativeDowncallCritical6:    n/a +14.3% +17.2% +26.1%
(x86 seems to be currently providing results that are worse
than interpreter, so something is not working.)

Test: Additional tests in 178-app-image-native-method test.
Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Test: aosp_taimen-userdebug boots.
Test: run-gtests.sh
Test: testrunner.py --target --optimizing
Bug: 112189621
Change-Id: I709c52ab2585a8f5f441f53ad2bf4a01d2b25dca
13 files changed