[llvm] r304671 - [PM] Add GVNSink to the pipeline.

[Davide Italiano via llvm-commits]

Author: davide
Date: Sat Jun  3 18:18:29 2017
New Revision: 304671

URL: http://llvm.org/viewvc/llvm-project?rev=304671&view=rev
Log:
[PM] Add GVNSink to the pipeline.

With this, the two pipelines should be in sync again (modulo
LoopUnswitch, but Chandler is actively working on that).

Differential Revision:  https://reviews.llvm.org/D33810

Modified:
    llvm/trunk/lib/Passes/PassBuilder.cpp

Modified: llvm/trunk/lib/Passes/PassBuilder.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Passes/PassBuilder.cpp?rev=304671&r1=304670&r2=304671&view=diff
==============================================================================
--- llvm/trunk/lib/Passes/PassBuilder.cpp (original)
+++ llvm/trunk/lib/Passes/PassBuilder.cpp Sat Jun  3 18:18:29 2017
@@ -164,6 +164,10 @@ static cl::opt<bool> EnableGVNHoist(
     "enable-npm-gvn-hoist", cl::init(false), cl::Hidden,
     cl::desc("Enable the GVN hoisting pass for the new PM (default = off)"));
 
+static cl::opt<bool> EnableGVNSink(
+    "enable-npm-gvn-sink", cl::init(false), cl::Hidden,
+    cl::desc("Enable the GVN hoisting pass for the new PM (default = off)"));
+
 static Regex DefaultAliasRegex(
     "^(default|thinlto-pre-link|thinlto|lto-pre-link|lto)<(O[0123sz])>$");
 
@@ -314,6 +318,12 @@ PassBuilder::buildFunctionSimplification
   if (EnableGVNHoist)
     FPM.addPass(GVNHoistPass());
 
+  // Global value numbering based sinking.
+  if (EnableGVNSink) {
+    FPM.addPass(GVNSinkPass());
+    FPM.addPass(SimplifyCFGPass());
+  }
+
   // Speculative execution if the target has divergent branches; otherwise nop.
   FPM.addPass(SpeculativeExecutionPass());