Optimize binary size of assert macros (#37023)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/37023
Optimize binary size of assert macros, through two ideas:
Concatenate string literals with __FILE__ and __LINE__ at compile time into one literal instead of keeping them in separate literals and combining them with c10::str
Optimize binary size of c10::str for some scenarios, especially for the scenario where it is called with an empty parameter list, this is actually a common call scenario in assert macros.
In server oss builds, this PR reduces binary size from 118.05 MB to 117.05 MB
ghstack-source-id: 102607237
Test Plan: Run oss server build (python setup.py install) and check size of libtorch_cpu.so reducing from 118.05MB to 117.05MB
Differential Revision: D20719400
fbshipit-source-id: 5c61f4195b947f06aafb8f0c8e255de3366e1ff2
