[PATCH] D66490: [NewPM] Enable the New Pass Manager by Default in Clang

[Leonard Chan via Phabricator via cfe-commits]

leonardchan created this revision.
leonardchan added reviewers: chandlerc, echristo, hfinkel, lattner, rupprecht.
leonardchan added a project: clang.
Herald added subscribers: dexonsmith, mehdi_amini, mgorny.

The new PM serves as a replacement for the legacy PM, and promises better codegen, better inlining, faster build times, and better PGO and LTO.  Now that LLVM 9.0.0 has branched, we have some time before the next release to work out any kinks that may arise from the switch.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D66490

Files:
  clang/CMakeLists.txt


Index: clang/CMakeLists.txt
===================================================================
--- clang/CMakeLists.txt
+++ clang/CMakeLists.txt
@@ -233,7 +233,7 @@
 set(ENABLE_X86_RELAX_RELOCATIONS OFF CACHE BOOL
     "enable x86 relax relocations by default")
 
-set(ENABLE_EXPERIMENTAL_NEW_PASS_MANAGER FALSE CACHE BOOL
+set(ENABLE_EXPERIMENTAL_NEW_PASS_MANAGER TRUE CACHE BOOL
   "Enable the experimental new pass manager by default.")
 
 # TODO: verify the values against LangStandards.def?


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