2 files changed, 3 insertions, 2 deletions
diff --git a/Source/JavaScriptCore/offlineasm/armv7.rb b/Source/JavaScriptCore/offlineasm/armv7.rb
index eb9472af3..b05f0e57f 100644
--- a/Source/JavaScriptCore/offlineasm/armv7.rb
+++ b/Source/JavaScriptCore/offlineasm/armv7.rb
@@ -683,7 +683,7 @@ def emitArmV7Compact(opcode2, opcode3, operands)
         $asm.puts "#{opcode3} #{armV7FlippedOperands(operands)}"
     else
         raise unless operands.size == 2
-        raise unless operands[1].is_a? RegisterID
+        raise unless operands[1].register?
         if operands[0].is_a? Immediate
             $asm.puts "#{opcode3} #{operands[1].armV7Operand}, #{operands[1].armV7Operand}, #{operands[0].armV7Operand}"
         else
diff --git a/Source/JavaScriptCore/offlineasm/backends.rb b/Source/JavaScriptCore/offlineasm/backends.rb
index 0633f07f8..78e545738 100644
--- a/Source/JavaScriptCore/offlineasm/backends.rb
+++ b/Source/JavaScriptCore/offlineasm/backends.rb
@@ -56,7 +56,8 @@ class Node
             $activeBackend = name
             send("lower" + name)
         rescue => e
-            raise "Got error #{e} at #{codeOriginString}"
+            e.message << "At #{codeOriginString}"
+            raise e
         end
     end
 end