This renames and generalizes -strip-module-flags to erase all named
metadata from a module. This makes it easier to diff IR.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333977 91177308-0d34-0410-b5e6-96231b3b80d8
Applying synthetic debug info before the bitcode writer pass has no
testing-related purpose. This commit prevents that from happening.
It also adds tests which check that IR produced with/without
-debugify-each enabled is identical after stripping. This makes it
possible to check that individual passes (or full pipelines) are
invariant to debug info.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333861 91177308-0d34-0410-b5e6-96231b3b80d8
Currently debugify prints it's output to stdout,
with this patch all the output generated goes to stderr.
This change lets us use debugify without taking away
the ability to pipe the output to other llvm tools.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@332642 91177308-0d34-0410-b5e6-96231b3b80d8
In post-commit review for r332416, Paul Robinson pointed out that the
test for -debugify-each is not checking what it needs to.
This commit tightens up the test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@332497 91177308-0d34-0410-b5e6-96231b3b80d8
This adds a -debugify-each mode to opt which, when enabled, wraps each
{Module,Function}Pass in a pipeline with logic to add, check, and strip
synthetic debug info for testing purposes.
This mode can be used to test complex pipelines for debug info bugs, or
to collect statistics about the number of debug values & locations lost
throughout various stages of a pipeline.
Patch by Son Tuan Vu!
Differential Revision: https://reviews.llvm.org/D46525
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@332312 91177308-0d34-0410-b5e6-96231b3b80d8
