diff --git a/lib/Target/X86/X86.td b/lib/Target/X86/X86.td
index 4d2636484f9..47861d5a67d 100644
--- a/lib/Target/X86/X86.td
+++ b/lib/Target/X86/X86.td
@@ -119,6 +119,10 @@ def : Proc<"amdfam10",        [FeatureSSE3,   FeatureSSE4A,
                                Feature3DNowA, Feature64Bit, FeatureSlowBTMem]>;
 def : Proc<"barcelona",       [FeatureSSE3,   FeatureSSE4A,
                                Feature3DNowA, Feature64Bit, FeatureSlowBTMem]>;
+def : Proc<"istanbul",        [Feature3DNowA, Feature64Bit, FeatureSSE4A,
+                               Feature3DNowA]>;
+def : Proc<"shanghai",        [Feature3DNowA, Feature64Bit, FeatureSSE4A,
+                               Feature3DNowA]>;
 
 def : Proc<"winchip-c6",      [FeatureMMX]>;
 def : Proc<"winchip2",        [FeatureMMX, Feature3DNow]>;