You should not remove the code-stubs here. The stubs that Dusan added gave
us a
significant reduction in generated code size. The arm32 port does not have
this
issue, due to the load/store-multiple instructions.
So even though we can remove the need to store doubles, the GP-register
save/restore must continue to use the stubs. Note that arm64 also uses
stubs for
safepoint register save/restore, so you can take a look at r22498.
(finally, this CL is not time critical, so please postpone the rework of
this
until we have a port for 22500, which is a build-breaker)
https://codereview.chromium.org/404143002/
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