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
The -check-debugify pass should preserve all analyses. Otherwise, it may
invalidate an optional analysis and inadvertently alter codegen.
The test case is reduced from deopt-bundle.ll. The result of `opt -O1`
on this file would differ when -debugify-each was toggled. That happened
because CheckDebugify failed to preserve GlobalsAA.
Thanks to Davide Italiano for his help chasing this down!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333959 91177308-0d34-0410-b5e6-96231b3b80d8
