llvm/test/Transforms/GlobalOpt/deaddeclaration.ll
Mehdi Amini 12be25f90c [GlobalOpt] Dead Eliminate declarations
GlobalOpt is already dead-code-eliminating global definitions. With
this change it also takes care of declarations.
Hopefully this should make it now a strict superset of GlobalDCE.
This is important for LTO/ThinLTO as we don't want the linker to see
"undefined reference" when it processes the input files: it could
prevent proper internalization (or even load an extra file from a
static archive, changing the behavior of the program!).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281653 91177308-0d34-0410-b5e6-96231b3b80d8
2016-09-15 20:26:27 +00:00

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LLVM

; RUN: opt < %s -globalopt -S | FileCheck %s
; CHECK-NOT: aa
; CHECK-NOT: bb
declare void @aa()
@bb = external global i8