commit c4118452bcdae305088e151719abb2a3530caede
author Jakob Stoklund Olesen <stoklund@2pi.dk> Wed Jun 20 23:31:34 2012 +0000
committer Jakob Stoklund Olesen <stoklund@2pi.dk> Wed Jun 20 23:31:34 2012 +0000
tree 0583c8f647f98165e164d9967eb0da360f6c03b9
parent 12a7be9ba4263a283ca14e277a90cb64fe0e6f62

Remove the -live-regunits command line option.

Register allocators depend on it being permanently enabled now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158873 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/LiveIntervalAnalysis.cpp

diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index d660bae..2aea1e1 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -27,7 +27,6 @@
 #include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Target/TargetMachine.h"
-#include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
@@ -40,9 +39,6 @@
 #include <cmath>
 using namespace llvm;
 
-// Temporary option to enable regunit liveness.
-static cl::opt<bool> LiveRegUnits("live-regunits", cl::Hidden, cl::init(true));
-
 STATISTIC(numIntervals , "Number of original intervals");
 
 char LiveIntervals::ID = 0;
@@ -62,8 +58,7 @@
   AU.addRequired<LiveVariables>();
   AU.addPreserved<LiveVariables>();
   AU.addPreservedID(MachineLoopInfoID);
-  if (LiveRegUnits)
-    AU.addRequiredTransitiveID(MachineDominatorsID);
+  AU.addRequiredTransitiveID(MachineDominatorsID);
   AU.addPreservedID(MachineDominatorsID);
   AU.addPreserved<SlotIndexes>();
   AU.addRequiredTransitive<SlotIndexes>();
@@ -109,9 +104,8 @@
   AA = &getAnalysis<AliasAnalysis>();
   LV = &getAnalysis<LiveVariables>();
   Indexes = &getAnalysis<SlotIndexes>();
-  if (LiveRegUnits)
-    DomTree = &getAnalysis<MachineDominatorTree>();
-  if (LiveRegUnits && !LRCalc)
+  DomTree = &getAnalysis<MachineDominatorTree>();
+  if (!LRCalc)
     LRCalc = new LiveRangeCalc();
   AllocatableRegs = TRI->getAllocatableSet(fn);
   ReservedRegs = TRI->getReservedRegs(fn);
@@ -120,9 +114,7 @@
 
   numIntervals += getNumIntervals();
 
-  if (LiveRegUnits) {
-    computeLiveInRegUnits();
-  }
+  computeLiveInRegUnits();
 
   DEBUG(dump());
   return true;