Have 'optnone' respect the -fast-isel=false option.

[oota-llvm.git] / lib / CodeGen / SelectionDAG / SelectionDAGISel.cpp

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index ebf071cb9946b8459c2de350d2c982396620cf78..3bbe5d4203bb419fcf2cd07156e4231d503600ba 100644 (file)
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -264,13 +264,17 @@ namespace llvm {
         return;
       IS.OptLevel = NewOptLevel;
       IS.TM.setOptLevel(NewOptLevel);
-      SavedFastISel = IS.TM.Options.EnableFastISel;
-      if (NewOptLevel == CodeGenOpt::None)
-        IS.TM.setFastISel(true);
       DEBUG(dbgs() << "\nChanging optimization level for Function "
             << IS.MF->getFunction()->getName() << "\n");
       DEBUG(dbgs() << "\tBefore: -O" << SavedOptLevel
             << " ; After: -O" << NewOptLevel << "\n");
+      SavedFastISel = IS.TM.Options.EnableFastISel;
+      if (NewOptLevel == CodeGenOpt::None) {
+        IS.TM.setFastISel(IS.TM.getO0WantsFastISel());
+        DEBUG(dbgs() << "\tFastISel is "
+              << (IS.TM.Options.EnableFastISel ? "enabled" : "disabled")
+              << "\n");
+      }
     }
 
     ~OptLevelChanger() {