X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FTargetSubtargetInfo.cpp;h=23c038fff661cac3a0affc256e93b9b82dcc941b;hb=7ee57ccbc603e74b38e745304694cbb643f4b9f9;hp=10e8db5925de0e584b79268a5cf3e99096291eb0;hpb=b6ac11cd03e9dd97b45dc97787171f942ef8e344;p=oota-llvm.git

diff --git a/lib/Target/TargetSubtargetInfo.cpp b/lib/Target/TargetSubtargetInfo.cpp
index 10e8db5925d..23c038fff66 100644
--- a/lib/Target/TargetSubtargetInfo.cpp
+++ b/lib/Target/TargetSubtargetInfo.cpp
@@ -12,8 +12,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Support/CommandLine.h"
-#include "llvm/Target/TargetSubtargetInfo.h"
 #include "llvm/ADT/SmallVector.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
 using namespace llvm;
 
 //---------------------------------------------------------------------------
@@ -24,11 +24,12 @@ TargetSubtargetInfo::TargetSubtargetInfo() {}
 TargetSubtargetInfo::~TargetSubtargetInfo() {}
 
 // Temporary option to compare overall performance change when moving from the
-// SD scheduler to the MachineScheduler pass pipeline. It should be removed
-// before 3.4. The normal way to enable/disable the MachineScheduling pass
-// itself is by using -enable-misched. For targets that already use MI sched
-// (via MySubTarget::enableMachineScheduler()) -misched-bench=false negates the
-// subtarget hook.
+// SD scheduler to the MachineScheduler pass pipeline. This is convenient for
+// benchmarking during the transition from SD to MI scheduling. Once armv7 makes
+// the switch, it should go away. The normal way to enable/disable the
+// MachineScheduling pass itself is by using -enable-misched. For targets that
+// already use MI sched (via MySubTarget::enableMachineScheduler())
+// -misched-bench=false negates the subtarget hook.
 static cl::opt<bool> BenchMachineSched("misched-bench", cl::Hidden,
     cl::desc("Migrate from the target's default SD scheduler to MI scheduler"));
 
@@ -38,17 +39,21 @@ bool TargetSubtargetInfo::useMachineScheduler() const {
   return enableMachineScheduler();
 }
 
+bool TargetSubtargetInfo::enableAtomicExpand() const {
+  return true;
+}
+
 bool TargetSubtargetInfo::enableMachineScheduler() const {
   return false;
 }
 
-bool TargetSubtargetInfo::enablePostRAScheduler(
-          CodeGenOpt::Level OptLevel,
-          AntiDepBreakMode& Mode,
-          RegClassVector& CriticalPathRCs) const {
-  Mode = ANTIDEP_NONE;
-  CriticalPathRCs.clear();
-  return false;
+bool TargetSubtargetInfo::enableRALocalReassignment(
+    CodeGenOpt::Level OptLevel) const {
+  return true;
+}
+
+bool TargetSubtargetInfo::enablePostMachineScheduler() const {
+  return getSchedModel()->PostRAScheduler;
 }
 
 bool TargetSubtargetInfo::useAA() const {