[PATCH] clang: add -f{no-,}integrate-as aliases

[Saleem Abdulrasool]

Hi nlewycky, rafael, chandlerc,

The integrated assembler is a feature.  Since the existing name has been
released, provide proper flags as aliases.

http://llvm-reviews.chandlerc.com/D2853

Files:
  include/clang/Driver/Options.td
  test/Driver/integrated-as.c

Index: include/clang/Driver/Options.td
===================================================================
--- include/clang/Driver/Options.td
+++ include/clang/Driver/Options.td
@@ -1327,6 +1327,11 @@
   MetaVarName<"<language>">;
 def y : Joined<["-"], "y">;
 
+def : Flag<["-"], "fintegrated-as">, Alias<integrated_as>, Group<f_Group>,
+      HelpText<"Enable the integrated assembler">;
+def : Flag<["-"], "fno-integrated-as">, Alias<no_integrated_as>, Group<f_Group>,
+      HelpText<"Disable the integrated assembler">;
+
 def working_directory : JoinedOrSeparate<["-"], "working-directory">, Flags<[CC1Option]>,
   HelpText<"Resolve file paths relative to the specified directory">;
 def working_directory_EQ : Joined<["-"], "working-directory=">, Flags<[CC1Option]>,
Index: test/Driver/integrated-as.c
===================================================================
--- test/Driver/integrated-as.c
+++ test/Driver/integrated-as.c
@@ -3,6 +3,17 @@
 // CHECK: cc1as
 // CHECK: -mrelax-all
 
+// RUN: %clang -### -fintegrated-as -c -save-temps %s 2>&1 | FileCheck %s -check-prefix FIAS
+
+// FIAS: cc1as
+
+// RUN: %clang -### -fno-integrated-as -S %s 2>&1 \
+// RUN:     | FileCheck %s -check-prefix NOFIAS
+
+// NOFIAS-NOT: cc1as
+// NOFIAS: -cc1
+// NOFIAS: -no-integrated-as
+
 // RUN: %clang -### -c -integrated-as -Wa,-compress-debug-sections -Wno-missing-debug-compression %s 2>&1 | FileCheck --check-prefix=COMPRESS_DEBUG_QUIET %s
 // COMPRESS_DEBUG_QUIET-NOT: warning: DWARF compression is not implemented
 // COMPRESS_DEBUG_QUIET-NOT: warning: argument unused during compilation
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