[X86] Add skeleton support for icelake CPU.

There are several patches out for review right now to implement Icelake features. This adds a CPU to collect them under.

llvm-svn: 318612

2 files changed, 14 insertions, 1 deletions

diff --git a/llvm/lib/Target/X86/X86.td b/llvm/lib/Target/X86/X86.td
index 34f2956e0c0..573d4413717 100644
--- a/llvm/lib/Target/X86/X86.td
+++ b/llvm/lib/Target/X86/X86.td
@@ -317,6 +317,8 @@ def ProcIntelSKX  : SubtargetFeature<"skx", "X86ProcFamily",
                     "IntelSKX", "Intel Skylake Server processors">;
 def ProcIntelCNL  : SubtargetFeature<"cannonlake", "X86ProcFamily",
                     "IntelCannonlake", "Intel Cannonlake processors">;
+def ProcIntelICL  : SubtargetFeature<"icelake", "X86ProcFamily",
+                    "IntelIcelake", "Intel Icelake processors">;
 
 class Proc<string Name, list<SubtargetFeature> Features>
  : ProcessorModel<Name, GenericModel, Features>;
@@ -662,6 +664,16 @@ class CannonlakeProc<string Name> : ProcModel<Name, HaswellModel,
 ]>;
 def : CannonlakeProc<"cannonlake">;
 
+def ICLFeatures : ProcessorFeatures<CNLFeatures.Value, [
+  // TODO: Insert features here.
+]>;
+
+class IcelakeProc<string Name> : ProcModel<Name, SkylakeServerModel,
+                                           ICLFeatures.Value, [
+  ProcIntelICL
+]>;
+def : IcelakeProc<"icelake">;
+
 // AMD CPUs.
 
 def : Proc<"k6",              [FeatureX87, FeatureSlowUAMem16, FeatureMMX]>;
diff --git a/llvm/lib/Target/X86/X86Subtarget.h b/llvm/lib/Target/X86/X86Subtarget.h
index bd164e72ad5..56587bc45fb 100644
--- a/llvm/lib/Target/X86/X86Subtarget.h
+++ b/llvm/lib/Target/X86/X86Subtarget.h
@@ -70,7 +70,8 @@ protected:
     IntelSkylake,
     IntelKNL,
     IntelSKX,
-    IntelCannonlake
+    IntelCannonlake,
+    IntelIcelake,
   };
 
   /// X86 processor family: Intel Atom, and others