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Author SHA1 Message Date
Vedant Kumar b6ed992de0 [opt] Introduce -strip-named-metadata 
This renames and generalizes -strip-module-flags to erase all named
metadata from a module. This makes it easier to diff IR.

llvm-svn: 333977
 2018-06-05 00:56:08 +00:00
Vedant Kumar fb7c768a3b [Debugify] Preserve analyses in -check-debugify 
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!

llvm-svn: 333959
 2018-06-04 21:43:28 +00:00