From 050e163ae8b4bb6eb252b59e2f8f36e68ae9239d Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Wed, 13 Jan 2016 19:58:01 +0000
Subject: Vendor import of llvm trunk r257626:
 https://llvm.org/svn/llvm-project/llvm/trunk@257626

---
 lib/Target/Hexagon/HexagonTargetMachine.cpp | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

(limited to 'lib/Target/Hexagon/HexagonTargetMachine.cpp')

diff --git a/lib/Target/Hexagon/HexagonTargetMachine.cpp b/lib/Target/Hexagon/HexagonTargetMachine.cpp
index 9dccd696c989..34b03fb74cef 100644
--- a/lib/Target/Hexagon/HexagonTargetMachine.cpp
+++ b/lib/Target/Hexagon/HexagonTargetMachine.cpp
@@ -26,7 +26,11 @@
 
 using namespace llvm;
 
-static cl:: opt<bool> DisableHardwareLoops("disable-hexagon-hwloops",
+
+static cl::opt<bool> EnableRDFOpt("rdf-opt", cl::Hidden, cl::ZeroOrMore,
+  cl::init(true), cl::desc("Enable RDF-based optimizations"));
+
+static cl::opt<bool> DisableHardwareLoops("disable-hexagon-hwloops",
   cl::Hidden, cl::desc("Disable Hardware Loops for Hexagon target"));
 
 static cl::opt<bool> DisableHexagonCFGOpt("disable-hexagon-cfgopt",
@@ -111,6 +115,7 @@ namespace llvm {
   FunctionPass *createHexagonOptimizeSZextends();
   FunctionPass *createHexagonPacketizer();
   FunctionPass *createHexagonPeephole();
+  FunctionPass *createHexagonRDFOpt();
   FunctionPass *createHexagonSplitConst32AndConst64();
   FunctionPass *createHexagonSplitDoubleRegs();
   FunctionPass *createHexagonStoreWidening();
@@ -262,9 +267,12 @@ void HexagonPassConfig::addPreRegAlloc() {
 }
 
 void HexagonPassConfig::addPostRegAlloc() {
-  if (getOptLevel() != CodeGenOpt::None)
+  if (getOptLevel() != CodeGenOpt::None) {
+    if (EnableRDFOpt)
+      addPass(createHexagonRDFOpt());
     if (!DisableHexagonCFGOpt)
       addPass(createHexagonCFGOptimizer(), false);
+  }
 }
 
 void HexagonPassConfig::addPreSched2() {
-- 
cgit v1.3