David Blaikie f873e2ec93 bugpoint: disabling symbolication of bugpoint-executed programs ... Initial implementation - needs similar work/testing for other tools bugpoint invokes (llc, lli I think, maybe more). Alternatively (as suggested by chandlerc@) an environment variable could be used. This would allow the option to pass transparently through user scripts, pass to compilers if they happened to be LLVM-ish, etc. I worry a bit about using cl::opt in the crash handling code - LLVM might crash early, perhaps before the cl::opt is properly initialized? Or at least before arguments have been parsed? - should be OK since it defaults to "pretty", so if the crash is very early in opt parsing, etc, then crash reports will still be symbolized. I shyed away from doing this with an environment variable when I realized that would require copying the existing environment and appending the env variable of interest. But it seems there's no existing LLVM API for accessing the environment (even the Support tests for process launching have their own ifdefs for getting the environment). It could be added, but seemed like a higher bar/untested codepath to actually add environment variables. Most importantly, this reduces the runtime of test/BugPoint/metadata.ll in a split-dwarf Debug build from 1m34s to 6.5s by avoiding a lot of symbolication. (this wasn't a problem for non-split-dwarf builds only because the executable was too large to map into memory (due to bugpoint setting a 400MB memory (including address space - not sure why? Going to remove that) limit on the child process) so symbolication would fail fast & wouldn't spend all that time parsing DWARF, etc) Reviewers: chandlerc, dannyb Differential Revision: https://reviews.llvm.org/D33804 llvm-svn: 305056		2017-06-09 07:29:03 +00:00
..
compile-custom.ll	llvm/test/BugPoint/compile-custom.ll: Use %/s for its path not to be mis-escaped.	2017-04-13 11:40:32 +00:00
compile-custom.ll.py
crash-narrowfunctiontest.ll
invalid-debuginfo.ll	[IR/Verifier] List the CU we weren't able to find in llvm.dbg.cu.	2017-02-20 22:51:42 +00:00
metadata.ll	Add -strip-nonlinetable-debuginfo capability	2016-10-25 18:44:13 +00:00
named-md.ll	Add -strip-nonlinetable-debuginfo capability	2016-10-25 18:44:13 +00:00
remove_arguments_test.ll
replace-funcs-with-null.ll
unsymbolized.ll	bugpoint: disabling symbolication of bugpoint-executed programs	2017-06-09 07:29:03 +00:00