llvm-mirror/test/Linker/comdat11.ll

; RUN: llvm-link -S %s %p/Inputs/comdat11.ll -o - | FileCheck %s

$foo = comdat any
@foo = global i8 0, comdat

; CHECK: @foo = global i8 0, comdat

; CHECK: define void @zed() {
; CHECK:   call void @bar()
; CHECK:   ret void
; CHECK: }

; CHECK: declare void @bar()
Bring r254336 back: The difference is that now we don't error on out-of-comdat access to internal global values. We copy them instead. This seems to match the expectation of COFF linkers (see pr25686). Original message: Start deciding earlier what to link. A traditional linker is roughly split in symbol resolution and "copying stuff". The two tasks are badly mixed in lib/Linker. This starts splitting them apart. With this patch there are no direct call to linkGlobalValueBody or linkGlobalValueProto. Everything is linked via WapValue. This also includes a few fixes: * A GV goes undefined if the comdat is dropped (comdat11.ll). * We error if an internal GV goes undefined (comdat13.ll). * We don't link an unused comdat. The first two match the behavior of an ELF linker. The second one is equivalent to running globaldce on the input. llvm-svn: 254418 2015-12-01 16:19:48 +01:00			`; RUN: llvm-link -S %s %p/Inputs/comdat11.ll -o - \| FileCheck %s`

			`$foo = comdat any`
			`@foo = global i8 0, comdat`

			`; CHECK: @foo = global i8 0, comdat`

			`; CHECK: define void @zed() {`
			`; CHECK: call void @bar()`
			`; CHECK: ret void`
			`; CHECK: }`

			`; CHECK: declare void @bar()`