From 79bbe855cd3443bc646b2aedb2973c9968ca3b7f Mon Sep 17 00:00:00 2001
From: Preston Gurd <preston.gurd@intel.com>
Date: Wed, 2 May 2012 21:38:46 +0000
Subject: [PATCH] Change the Intel Atom detection code to recognize Lincroft
 and Medfield.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156025 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Support/Host.cpp            | 5 +++--
 lib/Target/X86/X86Subtarget.cpp | 3 ++-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/lib/Support/Host.cpp b/lib/Support/Host.cpp
index a5e0cb061c1..6d42780cc28 100644
--- a/lib/Support/Host.cpp
+++ b/lib/Support/Host.cpp
@@ -234,8 +234,9 @@ std::string sys::getHostCPUName() {
       case 58:
         return "core-avx-i";
 
-      case 28: // Intel Atom processor. All processors are manufactured using
-               // the 45 nm process
+      case 28: // Most 45 nm Intel Atom processors
+      case 38: // 45 nm Atom Lincroft
+      case 39: // 32 nm Atom Medfield
         return "atom";
 
       default: return "i686";
diff --git a/lib/Target/X86/X86Subtarget.cpp b/lib/Target/X86/X86Subtarget.cpp
index 2ec277a2fab..7970268b2da 100644
--- a/lib/Target/X86/X86Subtarget.cpp
+++ b/lib/Target/X86/X86Subtarget.cpp
@@ -253,7 +253,8 @@ void X86Subtarget::AutoDetectSubtargetFeatures() {
     }
 
     // Set processor type. Currently only Atom is detected.
-    if (Family == 6 && Model == 28) {
+    if (Family == 6 &&
+        (Model == 28 || Model == 38 || Model == 39)) {
       X86ProcFamily = IntelAtom;
 
       UseLeaForSP = true;