Merge pull request #60 from CodaFi/target-locked

Add accessors for features and CPU type

Author: CodaFi

Sources/LLVM/TargetMachine.swift

@@ -86,7 +86,7 @@ public class TargetMachine {
   /// The target information associated with this target machine.
   public let target: Target
 
-  /// The data layout semantics associated with this target machine
+  /// The data layout semantics associated with this target machine.
   public let dataLayout: TargetData
 
   /// A string representing the target triple for this target machine.  In the
@@ -99,6 +99,24 @@ public class TargetMachine {
   /// - abi = eabi, gnu, android, macho, elf, etc.
   public let triple: String
 
+  /// The CPU associated with this target machine.
+  public var cpu: String {
+    guard let str = LLVMGetTargetMachineCPU(self.llvm) else {
+      return ""
+    }
+    defer { LLVMDisposeMessage(str) }
+    return String(validatingUTF8: UnsafePointer<CChar>(str)) ?? ""
+  }
+
+  /// The feature string associated with this target machine.
+  public var features: String {
+    guard let str = LLVMGetTargetMachineFeatureString(self.llvm) else {
+      return ""
+    }
+    defer { LLVMDisposeMessage(str) }
+    return String(validatingUTF8: UnsafePointer<CChar>(str)) ?? ""
+  }
+
   /// Creates a Target Machine with information about its target environment.
   ///
   /// - parameter triple: An optional target triple to target.  If this is not