RFR(L): 8185265 [MVT] improve performance of return of value types with new calling convention

Roland Westrelin rwestrel at redhat.com
Fri Aug 11 09:47:48 UTC 2017

Here is a new webrev that addresses your comments:


I changed my mind wrt UseTLAB: I changed the code in macro.cpp so it
works with UseTLAB off.

> templateInterpreterGenerator_x86.cpp
> - As I understand, a pack/unpack handler is always set if the value type can be returned in registers. Why do we need 
> the pack_handler != 0 check? Isn't the __ testptr(rax, 1) sufficient?

Yes, you're right about that.


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