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Author SHA1 Message Date
Tobias Edler von Koch 7609cb83e6 Re-land "[LTO] Enable module summary emission by default for regular LTO" 
Since we are now producing a summary also for regular LTO builds, we
need to run the NameAnonGlobals pass in those cases as well (the
summary cannot handle anonymous globals).

See https://reviews.llvm.org/D34156 for details on the original change.

This reverts commit 6c9ee4a4a438a8059aacc809b2dd57128fccd6b3.

llvm-svn: 335385
 2018-06-22 20:23:21 +00:00
Tobias Edler von Koch e597a2cf81 Revert "[LTO] Enable module summary emission by default for regular LTO" 
This is breaking a couple of buildbots. We need to run the
NameAnonGlobal pass for regular LTO now as well (since we're producing a
summary). I'll post a separate patch for review to make this happen and
then re-commit.

This reverts commit c0759b7b1f4a81ff9021b952aa38a222d5fa4dfd.

llvm-svn: 335291
 2018-06-21 21:24:30 +00:00
Tobias Edler von Koch 9a8be606f3 [LTO] Enable module summary emission by default for regular LTO 
Summary:
With D33921, we gained the ability to have module summaries in regular
LTO modules without triggering ThinLTO compilation. Module summaries in
regular LTO allow garbage collection (dead stripping) before LTO
compilation and thus open up additional optimization opportunities.

This patch enables summary emission in regular LTO for all targets
except ld64-based ones (which use the legacy LTO API).

Reviewers: pcc, tejohnson, mehdi_amini

Subscribers: inglorion, eraman, cfe-commits

Differential Revision: https://reviews.llvm.org/D34156

llvm-svn: 335284
 2018-06-21 20:20:41 +00:00