diff --git a/clang/test/CodeGen/attr-target-mv.c b/clang/test/CodeGen/attr-target-mv.c
--- a/clang/test/CodeGen/attr-target-mv.c
+++ b/clang/test/CodeGen/attr-target-mv.c
@@ -14,6 +14,7 @@
 int __attribute__((target("arch=sapphirerapids"))) foo(void) {return 10;}
 int __attribute__((target("arch=alderlake"))) foo(void) {return 11;}
 int __attribute__((target("arch=rocketlake"))) foo(void) {return 12;}
+int __attribute__((target("arch=core2"))) foo(void) {return 13;}
 int __attribute__((target("default"))) foo(void) { return 2; }
 
 int bar(void) {
@@ -146,6 +147,8 @@
 // LINUX: ret i32 11
 // LINUX: define{{.*}} i32 @foo.arch_rocketlake()
 // LINUX: ret i32 12
+// LINUX: define{{.*}} i32 @foo.arch_core2()
+// LINUX: ret i32 13
 // LINUX: define{{.*}} i32 @foo()
 // LINUX: ret i32 2
 // LINUX: define{{.*}} i32 @bar()
@@ -175,6 +178,8 @@
 // WINDOWS: ret i32 11
 // WINDOWS: define dso_local i32 @foo.arch_rocketlake()
 // WINDOWS: ret i32 12
+// WINDOWS: define dso_local i32 @foo.arch_core2()
+// WINDOWS: ret i32 13
 // WINDOWS: define dso_local i32 @foo()
 // WINDOWS: ret i32 2
 // WINDOWS: define dso_local i32 @bar()
diff --git a/llvm/lib/Support/X86TargetParser.cpp b/llvm/lib/Support/X86TargetParser.cpp
--- a/llvm/lib/Support/X86TargetParser.cpp
+++ b/llvm/lib/Support/X86TargetParser.cpp
@@ -321,7 +321,7 @@
   { {"prescott"}, CK_Prescott, ~0U, FeaturesPrescott },
   { {"nocona"}, CK_Nocona, ~0U, FeaturesNocona },
   // Core microarchitecture based processors.
-  { {"core2"}, CK_Core2, ~0U, FeaturesCore2 },
+  { {"core2"}, CK_Core2, FEATURE_SSSE3, FeaturesCore2 },
   { {"penryn"}, CK_Penryn, ~0U, FeaturesPenryn },
   // Atom processors
   { {"bonnell"}, CK_Bonnell, FEATURE_SSSE3, FeaturesBonnell },