(only export main) on the mac.
This improves DYLD_PRINT_STATISTICS from:
total time: 6.0 milliseconds (100.0%)
total images loaded: 5 (4 from dyld shared cache, 3 needed no fixups)
total segments mapped: 0, into 0 pages with 0 pages pre-fetched
total images loading time: 0.0 milliseconds (1.4%)
total rebase fixups: 0
total rebase fixups time: 0.0 milliseconds (0.0%)
total binding fixups: 7,928
total binding symbol lookups: 4,087, average images searched per symbol: 1.9
total binding fixups time: 4.7 milliseconds (79.2%)
total bindings lazily fixed up: 170 of 4,372
total init time time: 1.1 milliseconds (19.2%)
total images with weak exports: 2
to:
total time: 1.4 milliseconds (100.0%)
total images loaded: 5 (4 from dyld shared cache, 4 needed no fixups)
total segments mapped: 0, into 0 pages with 0 pages pre-fetched
total images loading time: 0.0 milliseconds (5.7%)
total rebase fixups: 0
total rebase fixups time: 0.0 milliseconds (0.2%)
total binding fixups: 1,079
total binding symbol lookups: 75, average images searched per symbol: 1.0
total binding fixups time: 0.5 milliseconds (33.9%)
total bindings lazily fixed up: 14 of 216
total init time time: 0.8 milliseconds (60.0%)
total images with weak exports: 1
This reduces the time to -fsyntax-only cocoa.h with PTH from 0.192s to 0.184 (4.3%)
rdar://6505315
llvm-svn: 64882
- Split backend related consumer out into Backend.cpp, replaces
LLVMCodeGenWriter.
- Structure follows llvm-gcc to some extent.
- Still need to implement all the options which impact code
generation and the optimization passes which llvm-gcc uses at
various levels.
llvm-svn: 57936
Make target info available to clang code generator. This is far from complete but this helps clang codegen module make progress.
At the moment target triplet and target description strings are hard coded in clang::TargetInfo
llvm-svn: 43572
to variables that are no longer live. This analysis is built on top
of CFGs and the LiveVariables analysis.
changes to driver:
added driver option "-check-dead-stores" to run the analysis
llvm-svn: 41754
source-level CFGs. This code may change significantly in the near
future as we explore different means to implement dataflow analyses.
Added a driver option, -dump-live-variables, to view the output of
live variable analysis. This output is very ALPHA; it will be improved shortly.
llvm-svn: 41737
Daniel Dunbar