Displaying 1 result from an estimated 1 matches for "parseuselists".
2015 Apr 01
4
[LLVMdev] [RFC] Setting preserve-bc-use-list-order=true by default
...ing an LTO build and serializing between the
LTO optimization pipeline and the LTO codegen pipeline. On SPEC,
serializing to/from bitcode will change the output executable in 33
benchmarks. If you use `-preserve-bc-use-list-order`, all executables
match.
How?
====
Have a look at `BitcodeReader::ParseUseLists()` and
`predictUseListOrder()` in `lib/Bitcode/Writer/ValueEnumerator.cpp`.
Does it degrade smoothly if IR changes?
=======================================
Yes. If a `Value`'s use-list has changed in size (e.g., because of
bitcode upgrades), its use-list order record is ignored.
What does i...