公开(公告)号：US20180060048A1

公开(公告)日：2018-03-01

申请号：US15407186

申请日：2017-01-16

Applicant: Google Inc.

Inventor： Andreas Gampe ,  Nicolas Geoffray ,  Mingyao Yang

IPC: G06F9/45

CPC classification number: G06F8/443 ,  G06F8/42 ,  G06F9/449 ,  G06F9/4552 ,  G06F9/45525

Abstract: Apparatus and methods related to compiling software are provided. A computing device can receive software having software-associated instructions for compilation into machine-language instructions. The computing device can perform a class hierarchy analysis to determine a class hierarchy for the software. The computing device can determine whether a particular method call is to be checked for execution as a virtual method call based on the class hierarchy. The computing device can, after determining that the particular method call is to be checked, determine particular machine-language instructions that can include: guarding machine-language instructions for checking a runtime-modifiable deoptimization indicator to determine whether the particular method call is to be executed as a virtual method call, and method-call machine-language instructions for the particular method call. The computing device can provide the particular machine-language instructions to a runtime system.