CMake option to allow enabling experimental new pass manager by default

This CMake flag allows setting the default value for the
-f[no]-experimental-new-pass-manager flag.

Differential Revision: https://reviews.llvm.org/D44330

llvm-svn: 329366

2 files changed, 2 insertions, 2 deletions

diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp b/clang/lib/Driver/ToolChains/CommonArgs.cpp
index 22263c8746c..fc7bb78a97b 100644
--- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
+++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp
@@ -455,7 +455,7 @@ void tools::AddGoldPlugin(const ToolChain &ToolChain, const ArgList &Args,
   // Need this flag to turn on new pass manager via Gold plugin.
   if (Args.hasFlag(options::OPT_fexperimental_new_pass_manager,
                    options::OPT_fno_experimental_new_pass_manager,
-                   /* Default */ false)) {
+                   /* Default */ ENABLE_EXPERIMENTAL_NEW_PASS_MANAGER)) {
     CmdArgs.push_back("-plugin-opt=new-pass-manager");
   }
 
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 45546ac3bc7..1a3b67f0968 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -526,7 +526,7 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
 
   Opts.ExperimentalNewPassManager = Args.hasFlag(
       OPT_fexperimental_new_pass_manager, OPT_fno_experimental_new_pass_manager,
-      /* Default */ false);
+      /* Default */ ENABLE_EXPERIMENTAL_NEW_PASS_MANAGER);
 
   Opts.DebugPassManager =
       Args.hasFlag(OPT_fdebug_pass_manager, OPT_fno_debug_pass_manager,