From e4f161c909a8ee35efd6e9f02fc3d32a756a6268 Mon Sep 17 00:00:00 2001
From: Andrew Lenharth <andrewl@lenharth.org>
Date: Wed, 2 Mar 2005 17:21:38 +0000
Subject: Added LSR as a beta pass for alpha

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20407 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Alpha/AlphaTargetMachine.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'lib/Target/Alpha/AlphaTargetMachine.cpp')

diff --git a/lib/Target/Alpha/AlphaTargetMachine.cpp b/lib/Target/Alpha/AlphaTargetMachine.cpp
index b077f07448..80a88662a1 100644
--- a/lib/Target/Alpha/AlphaTargetMachine.cpp
+++ b/lib/Target/Alpha/AlphaTargetMachine.cpp
@@ -26,6 +26,12 @@ namespace {
   RegisterTarget<AlphaTargetMachine> X("alpha", "  Alpha (incomplete)");
 }
 
+namespace llvm {
+  cl::opt<bool> EnableAlphaLSR("enable-lsr-for-alpha", 
+                             cl::desc("Enable LSR for Alpha (beta option!)"), 
+                             cl::Hidden);
+}
+
 unsigned AlphaTargetMachine::getModuleMatchQuality(const Module &M) {
   // We strongly match "alpha*".
   std::string TT = M.getTargetTriple();
@@ -54,6 +60,9 @@ AlphaTargetMachine::AlphaTargetMachine( const Module &M, IntrinsicLowering *IL)
 bool AlphaTargetMachine::addPassesToEmitAssembly(PassManager &PM,
                                                    std::ostream &Out) {
   
+  if (EnableAlphaLSR)
+    PM.add(createLoopStrengthReducePass());
+
   // FIXME: Implement efficient support for garbage collection intrinsics.
   PM.add(createLowerGCPass());
 
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