Fix X86 compilation.

This commit is to work-around an LLVM bug. LLVM's DisableUnitAtATime will
break X86 compilation (logan), and I saw this in the llvm PassManagerBuilder:
  // FIXME: We shouldn't bother with this anymore.

We follow the workaround above in the LLVM tree. It does magic.

Change-Id: I699757f3385a91202d34141d7f154cd0e80bae03
1 file changed
tree: 3a8cedf75c0261b553e5285c23427d8528216e56
  1. .gitignore
  3. build/
  4. jdwpspy/
  5. src/
  6. test/
  7. tools/