Index: lib/Target/X86/X86.td
===================================================================
--- lib/Target/X86/X86.td
+++ lib/Target/X86/X86.td
@@ -421,8 +421,10 @@
                     "IntelSKX", "Intel Skylake Server processors">;
 def ProcIntelCNL  : SubtargetFeature<"cannonlake", "X86ProcFamily",
                     "IntelCannonlake", "Intel Cannonlake processors">;
-def ProcIntelICL  : SubtargetFeature<"icelake", "X86ProcFamily",
-                    "IntelIcelake", "Intel Icelake processors">;
+def ProcIntelICL  : SubtargetFeature<"icelake-client", "X86ProcFamily",
+                    "IntelIcelakeClient", "Intel Icelake processors">;
+def ProcIntelICX  : SubtargetFeature<"icelake-server", "X86ProcFamily",
+                    "IntelIcelakeServer", "Intel Icelake Server processors">;
 
 class Proc<string Name, list<SubtargetFeature> Features>
  : ProcessorModel<Name, GenericModel, Features>;
@@ -812,12 +814,19 @@
   FeatureRDPID
 ]>;
 
-class IcelakeProc<string Name> : ProcModel<Name, SkylakeServerModel,
-                                           ICLFeatures.Value, [
+class IcelakeClientProc<string Name> : ProcModel<Name, SkylakeServerModel,
+                                                 ICLFeatures.Value, [
   ProcIntelICL,
   FeatureHasFastGather
 ]>;
-def : IcelakeProc<"icelake">;
+def : IcelakeClientProc<"icelake-client">;
+
+class IcelakeServerProc<string Name> : ProcModel<Name, SkylakeServerModel,
+                                                 ICLFeatures.Value, [
+  ProcIntelICX,
+  FeatureHasFastGather
+]>;
+def : IcelakeServerProc<"icelake-server">;
 
 // AMD CPUs.
 
Index: lib/Target/X86/X86Subtarget.h
===================================================================
--- lib/Target/X86/X86Subtarget.h
+++ lib/Target/X86/X86Subtarget.h
@@ -63,7 +63,8 @@
     IntelKNL,
     IntelSKX,
     IntelCannonlake,
-    IntelIcelake,
+    IntelIcelakeClient,
+    IntelIcelakeServer,
   };
 
 protected:
Index: test/CodeGen/X86/avx512vpopcntdq-schedule.ll
===================================================================
--- test/CodeGen/X86/avx512vpopcntdq-schedule.ll
+++ test/CodeGen/X86/avx512vpopcntdq-schedule.ll
@@ -1,6 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -print-schedule -mcpu=x86-64 -mattr=+avx512vpopcntdq | FileCheck %s --check-prefix=GENERIC
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -print-schedule -mcpu=icelake | FileCheck %s --check-prefix=ICELAKE
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -print-schedule -mcpu=icelake-client | FileCheck %s --check-prefix=ICELAKE
 
 define void @test_vpopcntd(<16 x i32> %a0, <16 x i32> %a1, <16 x i32> *%a2, i16 %a3) {
 ; GENERIC-LABEL: test_vpopcntd:
Index: test/CodeGen/X86/clwb.ll
===================================================================
--- test/CodeGen/X86/clwb.ll
+++ test/CodeGen/X86/clwb.ll
@@ -4,7 +4,7 @@
 ; RUN: llc < %s -mtriple=i686-apple-darwin -mattr=clwb | FileCheck %s
 ; RUN: llc < %s -mtriple=i686-apple-darwin -mcpu=skx | FileCheck %s
 ; RUN: not llc < %s -mtriple=i686-apple-darwin -mcpu=cannonlake 2>&1 | FileCheck %s --check-prefix=CNL
-; RUN: llc < %s -mtriple=i686-apple-darwin -mcpu=icelake | FileCheck %s
+; RUN: llc < %s -mtriple=i686-apple-darwin -mcpu=icelake-client | FileCheck %s
 
 ; CNL: LLVM ERROR: Cannot select: intrinsic %llvm.x86.clwb
 
Index: test/CodeGen/X86/cpus.ll
===================================================================
--- test/CodeGen/X86/cpus.ll
+++ test/CodeGen/X86/cpus.ll
@@ -46,7 +46,8 @@
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=skylake-avx512 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=skx 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=cannonlake 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
-; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=icelake 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
+; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=icelake-client 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
+; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=icelake-server 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=atom 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=bonnell 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=silvermont 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
Index: test/CodeGen/X86/rdpid-schedule.ll
===================================================================
--- test/CodeGen/X86/rdpid-schedule.ll
+++ test/CodeGen/X86/rdpid-schedule.ll
@@ -1,6 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -print-schedule -mcpu=x86-64 -mattr=+rdpid | FileCheck %s --check-prefix=CHECK --check-prefix=GENERIC
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -print-schedule -mcpu=icelake | FileCheck %s --check-prefix=CHECK --check-prefix=ICELAKE
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -print-schedule -mcpu=icelake-client | FileCheck %s --check-prefix=CHECK --check-prefix=ICELAKE
 
 define i32 @test_rdpid() {
 ; GENERIC-LABEL: test_rdpid:
Index: test/CodeGen/X86/rtm-schedule.ll
===================================================================
--- test/CodeGen/X86/rtm-schedule.ll
+++ test/CodeGen/X86/rtm-schedule.ll
@@ -3,7 +3,7 @@
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -print-schedule -mcpu=skylake | FileCheck %s --check-prefix=CHECK --check-prefix=SKYLAKE --check-prefix=SKL
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -print-schedule -mcpu=skx | FileCheck %s --check-prefix=CHECK --check-prefix=SKYLAKE --check-prefix=SKX
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -print-schedule -mcpu=cannonlake | FileCheck %s --check-prefix=CHECK --check-prefix=SKYLAKE --check-prefix=CNL
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -print-schedule -mcpu=icelake | FileCheck %s --check-prefix=CHECK --check-prefix=SKYLAKE --check-prefix=ICL
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -print-schedule -mcpu=icelake-client | FileCheck %s --check-prefix=CHECK --check-prefix=SKYLAKE --check-prefix=ICL
 
 define i32 @test_xbegin() nounwind uwtable {
 ; GENERIC-LABEL: test_xbegin: