Revert "Merge LLVM to upstream r153975"
Revert "Merge LLVM to upstream r153975"

This reverts commit 283436b044aa106cb93bff3feb044b3cc278ca46.

R= jvoung
BUG= http://code.google.com/p/nativeclient/issues/detail?id=2711
TEST=toolchain bots

Review URL: https://chromiumcodereview.appspot.com/9958158

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@8176 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client