In Record only store the direct superclasses instead of all
superclasses. getSuperClasses recurses to find all superclasses when
necessary.
This gives a small reduction in memory usage. On lib/Target/X86/X86.td I
measured about 2.0% reduction in total bytes allocated (measured by
valgrind) and 1.3% reduction in peak memory usage (measured by
/usr/bin/time -v).
---------
Co-authored-by: Min-Yih Hsu <min@myhsu.dev>
`Opt(flag, func, desc)` registers an option into `Action`.
`OptClass<EmitterC>` is also available if `EmitterC(RK).run(OS)` is capable.
`Action` is defined as `ManagedStatic<cl::opt>` to guarantee to be created
when each registration of emitter is invoked.
`llvm::TableGenMain(argv0, MainFn)` invokes `Action` instead of `MainFn`
Differential Revision: https://reviews.llvm.org/D144351
Describe in the BackEnd Developer's Guide. Instrument a few backends.
Remove an old unused timing facility. Add a null backend for timing
the parser.
Differential Revision: https://reviews.llvm.org/D91388
I don't have commit access.
Please help me commit it.
Thanks : )
Reviewed By: Paul-C-Anagnostopoulos
Differential Revision: https://reviews.llvm.org/D88139
