NFC put the armv6m entry with the other Cortex-M entries

The armv6m entry in cores_match() got separated from its
friends armv7m and armv7em.  Reuniting them to make it
easier to keep them updated in all at the same time.

Author: jasonmolenda

lldb/source/Utility/ArchSpec.cpp

@@ -1118,20 +1118,6 @@ static bool cores_match(const ArchSpec::Core core1, const ArchSpec::Core core2,
       return true;
     break;
 
-  case ArchSpec::eCore_arm_armv6m:
-    if (!enforce_exact_match) {
-      if (core2 == ArchSpec::eCore_arm_generic)
-        return true;
-      if (core2 == ArchSpec::eCore_arm_armv7em)
-        return true;
-      if (core2 == ArchSpec::eCore_arm_armv7)
-        return true;
-      if (core2 == ArchSpec::eCore_arm_armv6m)
-        return true;
-      try_inverse = false;
-    }
-    break;
-
   case ArchSpec::kCore_hexagon_any:
     if ((core2 >= ArchSpec::kCore_hexagon_first &&
          core2 <= ArchSpec::kCore_hexagon_last) ||
@@ -1140,8 +1126,9 @@ static bool cores_match(const ArchSpec::Core core1, const ArchSpec::Core core2,
     break;
 
   // v. https://en.wikipedia.org/wiki/ARM_Cortex-M#Silicon_customization
-  // Cortex-M0 - ARMv6-M - armv6m Cortex-M3 - ARMv7-M - armv7m Cortex-M4 -
-  // ARMv7E-M - armv7em
+  // Cortex-M0 - ARMv6-M - armv6m 
+  // Cortex-M3 - ARMv7-M - armv7m 
+  // Cortex-M4 - ARMv7E-M - armv7em
   case ArchSpec::eCore_arm_armv7em:
     if (!enforce_exact_match) {
       if (core2 == ArchSpec::eCore_arm_generic)
@@ -1157,8 +1144,9 @@ static bool cores_match(const ArchSpec::Core core1, const ArchSpec::Core core2,
     break;
 
   // v. https://en.wikipedia.org/wiki/ARM_Cortex-M#Silicon_customization
-  // Cortex-M0 - ARMv6-M - armv6m Cortex-M3 - ARMv7-M - armv7m Cortex-M4 -
-  // ARMv7E-M - armv7em
+  // Cortex-M0 - ARMv6-M - armv6m 
+  // Cortex-M3 - ARMv7-M - armv7m 
+  // Cortex-M4 - ARMv7E-M - armv7em
   case ArchSpec::eCore_arm_armv7m:
     if (!enforce_exact_match) {
       if (core2 == ArchSpec::eCore_arm_generic)
@@ -1173,6 +1161,24 @@ static bool cores_match(const ArchSpec::Core core1, const ArchSpec::Core core2,
     }
     break;
 
+  // v. https://en.wikipedia.org/wiki/ARM_Cortex-M#Silicon_customization
+  // Cortex-M0 - ARMv6-M - armv6m 
+  // Cortex-M3 - ARMv7-M - armv7m 
+  // Cortex-M4 - ARMv7E-M - armv7em
+  case ArchSpec::eCore_arm_armv6m:
+    if (!enforce_exact_match) {
+      if (core2 == ArchSpec::eCore_arm_generic)
+        return true;
+      if (core2 == ArchSpec::eCore_arm_armv7em)
+        return true;
+      if (core2 == ArchSpec::eCore_arm_armv7)
+        return true;
+      if (core2 == ArchSpec::eCore_arm_armv6m)
+        return true;
+      try_inverse = false;
+    }
+    break;
+
   case ArchSpec::eCore_arm_armv7f:
   case ArchSpec::eCore_arm_armv7k:
   case ArchSpec::eCore_arm_armv7s: