This reverts commit 8b75e6bc35.
The FileCheck tests are not equivalent:
test/CodeGen/X86/tailcall-structret.ll:6:10: error: expected string not found in input
; CHECK: jmp init
^
<stdin>:1:2: note: scanning from here
.section __TEXT,__text,regular,pure_instructions
^
<stdin>:13:2: note: possible intended match here
jmp _init ## TAILCALL
^
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175124 91177308-0d34-0410-b5e6-96231b3b80d8