Add Triple::isAndroid().

This is a simple refactoring that replaces Triple.getEnvironment()
checks for Android with Triple.isAndroid().

llvm-svn: 249750
diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.h b/llvm/lib/Target/AArch64/AArch64Subtarget.h
index 6232021..78af288 100644
--- a/llvm/lib/Target/AArch64/AArch64Subtarget.h
+++ b/llvm/lib/Target/AArch64/AArch64Subtarget.h
@@ -123,6 +123,7 @@
   bool isTargetIOS() const { return TargetTriple.isiOS(); }
   bool isTargetLinux() const { return TargetTriple.isOSLinux(); }
   bool isTargetWindows() const { return TargetTriple.isOSWindows(); }
+  bool isTargetAndroid() const { return TargetTriple.isAndroid(); }
 
   bool isTargetCOFF() const { return TargetTriple.isOSBinFormatCOFF(); }
   bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.h b/llvm/lib/Target/ARM/ARMSubtarget.h
index 554c789..ad546c1 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.h
+++ b/llvm/lib/Target/ARM/ARMSubtarget.h
@@ -383,7 +383,7 @@
             TargetTriple.getEnvironment() == Triple::GNUEABI ||
             TargetTriple.getEnvironment() == Triple::EABIHF ||
             TargetTriple.getEnvironment() == Triple::GNUEABIHF ||
-            TargetTriple.getEnvironment() == Triple::Android) &&
+            isTargetAndroid()) &&
            !isTargetDarwin() && !isTargetWindows();
   }
 
@@ -393,9 +393,7 @@
            TargetTriple.getEnvironment() == Triple::EABIHF ||
            isTargetWindows();
   }
-  bool isTargetAndroid() const {
-    return TargetTriple.getEnvironment() == Triple::Android;
-  }
+  bool isTargetAndroid() const { return TargetTriple.isAndroid(); }
 
   bool isAPCS_ABI() const;
   bool isAAPCS_ABI() const;
diff --git a/llvm/lib/Target/X86/X86Subtarget.h b/llvm/lib/Target/X86/X86Subtarget.h
index 198e7fb..382f737 100644
--- a/llvm/lib/Target/X86/X86Subtarget.h
+++ b/llvm/lib/Target/X86/X86Subtarget.h
@@ -397,9 +397,7 @@
   bool isTargetMachO() const { return TargetTriple.isOSBinFormatMachO(); }
 
   bool isTargetLinux() const { return TargetTriple.isOSLinux(); }
-  bool isTargetAndroid() const {
-    return TargetTriple.getEnvironment() == Triple::Android;
-  }
+  bool isTargetAndroid() const { return TargetTriple.isAndroid(); }
   bool isTargetNaCl() const { return TargetTriple.isOSNaCl(); }
   bool isTargetNaCl32() const { return isTargetNaCl() && !is64Bit(); }
   bool isTargetNaCl64() const { return isTargetNaCl() && is64Bit(); }