r314964 - Enabling new pass manager in LTO (and thinLTO) link step.

[Sean Fertile via cfe-commits]

Author: sfertile
Date: Wed Oct  4 18:50:48 2017
New Revision: 314964

URL: http://llvm.org/viewvc/llvm-project?rev=314964&view=rev
Log:
Enabling new pass manager in LTO (and thinLTO) link step.

Passes 'new-pass-manager' option to the linker plugin when the new pass
manager is enabled.

Patch by Graham Yiu.

Differential Revision: https://reviews.llvm.org/D38517

Added:
    cfe/trunk/test/Driver/gold-lto-new-pass-man.c
Modified:
    cfe/trunk/lib/Driver/ToolChains/CommonArgs.cpp

Modified: cfe/trunk/lib/Driver/ToolChains/CommonArgs.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/CommonArgs.cpp?rev=314964&r1=314963&r2=314964&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains/CommonArgs.cpp (original)
+++ cfe/trunk/lib/Driver/ToolChains/CommonArgs.cpp Wed Oct  4 18:50:48 2017
@@ -454,6 +454,14 @@ void tools::AddGoldPlugin(const ToolChai
       CmdArgs.push_back(
           Args.MakeArgString(Twine("-plugin-opt=sample-profile=") + FName));
   }
+
+  // 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)) {
+    CmdArgs.push_back("-plugin-opt=new-pass-manager");
+  }
+
 }
 
 void tools::addArchSpecificRPath(const ToolChain &TC, const ArgList &Args,

Added: cfe/trunk/test/Driver/gold-lto-new-pass-man.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/gold-lto-new-pass-man.c?rev=314964&view=auto
==============================================================================
--- cfe/trunk/test/Driver/gold-lto-new-pass-man.c (added)
+++ cfe/trunk/test/Driver/gold-lto-new-pass-man.c Wed Oct  4 18:50:48 2017
@@ -0,0 +1,7 @@
+// RUN: touch %t.o
+//
+// RUN: %clang -target ppc64le-unknown-linux -### %t.o -flto 2>&1 \
+// RUN:     -Wl,-plugin-opt=foo -O3 \
+// RUN:     -fexperimental-new-pass-manager \
+// RUN:     | FileCheck %s
+// CHECK: "-plugin-opt=new-pass-manager"