Index: lib/Target/PowerPC/PPC.td
===================================================================
--- lib/Target/PowerPC/PPC.td
+++ lib/Target/PowerPC/PPC.td
@@ -86,6 +86,8 @@
   "Enable fc[ft]* (unsigned and single-precision) and lfiwzx instructions">;
 def FeatureISEL      : SubtargetFeature<"isel","HasISEL", "true",
                                         "Enable the isel instruction">;
+def FeatureSlowISEL  : SubtargetFeature<"slowisel","HasSlowISEL", "true",
+                                        "The ISEL instruction is slow compared to a predicted branch">;
 def FeaturePOPCNTD   : SubtargetFeature<"popcntd","HasPOPCNTD", "true",
                                         "Enable the popcnt[dw] instructions">;
 def FeatureBPERMD    : SubtargetFeature<"bpermd", "HasBPERMD", "true",
@@ -169,7 +171,7 @@
        FeatureMFOCRF, FeatureFCPSGN, FeatureFSqrt, FeatureFRE,
        FeatureFRES, FeatureFRSQRTE, FeatureFRSQRTES,
        FeatureRecipPrec, FeatureSTFIWX, FeatureLFIWAX,
-       FeatureFPRND, FeatureFPCVT, FeatureISEL,
+       FeatureFPRND, FeatureFPCVT, FeatureISEL, FeatureSlowISEL,
        FeaturePOPCNTD, FeatureCMPB, FeatureLDBRX,
        Feature64Bit /*, Feature64BitRegs */,
        FeatureBPERMD, FeatureExtDiv,
Index: lib/Target/PowerPC/PPCSubtarget.h
===================================================================
--- lib/Target/PowerPC/PPCSubtarget.h
+++ lib/Target/PowerPC/PPCSubtarget.h
@@ -101,6 +101,7 @@
   bool HasFPRND;
   bool HasFPCVT;
   bool HasISEL;
+  bool HasSlowISEL;
   bool HasPOPCNTD;
   bool HasBPERMD;
   bool HasExtDiv;
@@ -232,6 +233,7 @@
   bool hasP8Crypto() const { return HasP8Crypto; }
   bool hasMFOCRF() const { return HasMFOCRF; }
   bool hasISEL() const { return HasISEL; }
+  bool hasSlowISEL() const { return HasSlowISEL; }
   bool hasPOPCNTD() const { return HasPOPCNTD; }
   bool hasBPERMD() const { return HasBPERMD; }
   bool hasExtDiv() const { return HasExtDiv; }
Index: lib/Target/PowerPC/PPCSubtarget.cpp
===================================================================
--- lib/Target/PowerPC/PPCSubtarget.cpp
+++ lib/Target/PowerPC/PPCSubtarget.cpp
@@ -82,6 +82,7 @@
   HasFPRND = false;
   HasFPCVT = false;
   HasISEL = false;
+  HasSlowISEL = false;
   HasPOPCNTD = false;
   HasBPERMD = false;
   HasExtDiv = false;