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llvm-project/llvm/test/Transforms/Internalize/used.ll

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Respect llvm.used in Internalize. The language reference says that: "If a symbol appears in the @llvm.used list, then the compiler, assembler, and linker are required to treat the symbol as if there is a reference to the symbol that it cannot see" Since even the linker cannot see the reference, we must assume that the reference can be using the symbol table. For example, a user can add __attribute__((used)) to a debug helper function like dump and use it from a debugger. llvm-svn: 187103
2013-07-25 11:23:25 +08:00
; RUN: opt < %s -internalize -S | FileCheck %s
@llvm.used = appending global [1 x void ()*] [void ()* @f], section "llvm.metadata"
@llvm.compiler.used = appending global [1 x void ()*] [void ()* @g], section "llvm.metadata"
; CHECK: define void @f()
define void @f() {
ret void
}
; CHECK: define internal void @g()
define void @g() {
ret void
}
; CHECK: define internal void @h()
define void @h() {
ret void
}