Temporarily revert r58979 and related patch. It's causing a failure in X86 bootstrap:

[oota-llvm.git] / test / CodeGen / X86 / ret-i64-0.ll

; RUN: llvm-as < %s | llc -march=x86 | grep xor | count 2

define i64 @foo() nounwind {
  ret i64 0
}