Commit Graph

5 Commits

Author SHA1 Message Date
Daniel Berlin
57bd1ea8eb Remove opt-bisect support for "cases" in favor of debug counters
Summary:
Ths "cases" support was not quite finished, is unused, and is really just debug counters.
(well, almost, debug counters are slightly more powerful, in that they can skip things at the start, too).
Note, opt-bisect itself could also be implemented as a wrapper around
debug counters, but not sure it's worth it ATM.

I'll shove it on a todo list if we think it is.

Reviewers: MatzeB, chandlerc

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D30856

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297542 91177308-0d34-0410-b5e6-96231b3b80d8
2017-03-11 01:41:03 +00:00
Andrew Kaylor
8a1d408868 Removing unused function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267236 91177308-0d34-0410-b5e6-96231b3b80d8
2016-04-22 22:24:20 +00:00
Andrew Kaylor
1e455c5cfb Re-commit optimization bisect support (r267022) without new pass manager support.
The original commit was reverted because of a buildbot problem with LazyCallGraph::SCC handling (not related to the OptBisect handling).

Differential Revision: http://reviews.llvm.org/D19172



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267231 91177308-0d34-0410-b5e6-96231b3b80d8
2016-04-22 22:06:11 +00:00
Vedant Kumar
8866d94a61 Revert "Initial implementation of optimization bisect support."
This reverts commit r267022, due to an ASan failure:

  http://lab.llvm.org:8080/green/job/clang-stage2-cmake-RgSan_check/1549

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267115 91177308-0d34-0410-b5e6-96231b3b80d8
2016-04-22 06:51:37 +00:00
Andrew Kaylor
c852398cbc Initial implementation of optimization bisect support.
This patch implements a optimization bisect feature, which will allow optimizations to be selectively disabled at compile time in order to track down test failures that are caused by incorrect optimizations.

The bisection is enabled using a new command line option (-opt-bisect-limit).  Individual passes that may be skipped call the OptBisect object (via an LLVMContext) to see if they should be skipped based on the bisect limit.  A finer level of control (disabling individual transformations) can be managed through an addition OptBisect method, but this is not yet used.

The skip checking in this implementation is based on (and replaces) the skipOptnoneFunction check.  Where that check was being called, a new call has been inserted in its place which checks the bisect limit and the optnone attribute.  A new function call has been added for module and SCC passes that behaves in a similar way.

Differential Revision: http://reviews.llvm.org/D19172



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267022 91177308-0d34-0410-b5e6-96231b3b80d8
2016-04-21 17:58:54 +00:00