2 files changed, 6 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 711321c6b6..48cad6173b 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -824,6 +824,9 @@ ARMTargetLowering::ARMTargetLowering(TargetMachine &TM)
 
   benefitFromCodePlacementOpt = true;
 
+  // Prefer likely predicted branches to selects on out-of-order cores.
+  predictableSelectIsExpensive = Subtarget->isCortexA9();
+
   setMinFunctionAlignment(Subtarget->isThumb() ? 1 : 2);
 }
 
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 7872a492f8..24d95a9977 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -1243,6 +1243,9 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM)
   setPrefLoopAlignment(4); // 2^4 bytes.
   benefitFromCodePlacementOpt = true;
 
+  // Predictable cmov don't hurt on atom because it's in-order.
+  predictableSelectIsExpensive = !Subtarget->isAtom();
+
   setPrefFunctionAlignment(4); // 2^4 bytes.
 }