Enable -fuse-init-array for Android X86/MIPS.

The dynamic linker of Android does not support .ctors/.dtors.
We should emit .init_array and .fini_array regardless the
gcc version.

NOTE: This patch does not affect the ARM backend, because
it is required to generate .init_array and .fini_array
for program targeting ARM AAPCS and AEABI.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168309 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index b95b8fa..a56d37b 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -2230,7 +2230,8 @@
 
 void Linux::addClangTargetOptions(ArgStringList &CC1Args) const {
   const Generic_GCC::GCCVersion &V = GCCInstallation.getVersion();
-  if (V >= Generic_GCC::GCCVersion::Parse("4.7.0"))
+  if (V >= Generic_GCC::GCCVersion::Parse("4.7.0") ||
+      getTriple().getEnvironment() == llvm::Triple::Android)
     CC1Args.push_back("-fuse-init-array");
 }