dblaikie added subscribers: aprantl, rnk. dblaikie added a comment. Tried this patch on some internal targets and metrics and it seems actually quite reasonable.
Tested with split DWARF, on Linux, with compressed debug info in .o/.dwo files, uncompressed in exe/dwp files. With -O0 and -O3, roughly speaking. Testing Clang as well as testing a large Google binary only at -O3: Clang: -O0: .o: +0.44% .dwo: +1.55% exe: 0.65% dwp: 1.42% -O3: .o: 0.90% .dwo: 0.26% exe: 0.33% dwp: 0.41% Large Google Binary -O3: .o: 0.32% .dwo: 0.16% exe: 0.19% dwp: 0.22% These are % of total size, not % of debug info contribution - so it's growing the debug info by more than that, but the total impact doesn't seem to be too bad. @rnk @aprantl @probinson: this looks plausible to me to take as a general change to the emitted DWARF, but I'm open to ideas/suggestions if folks find this to be too much growth for not enough benefit & that it should be behind a flag? Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D123534/new/ https://reviews.llvm.org/D123534 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
