mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
981c18bd80
A really unfortunate design of llvm-link and related libraries is that they operate one module at a time. This means they can copy a GV to the destination module that should not be there in the final result because a later bitcode file takes precedence. We already handled cases like a strong GV replacing a weak for example. One case that is not currently handled is a comdat replacing another. This doesn't happen in ELF, but with COFF largest selection kind it is possible. In "llvm-link a.ll b.ll" if the selected comdat was from a.ll, everything will work and we will not copy the comdat from b.ll. But if we run "llvm-link b.ll a.ll", we fail to delete the already copied comdat from b.ll. This patch fixes that. llvm-svn: 264103
34 lines
950 B
LLVM
34 lines
950 B
LLVM
; RUN: llvm-link -S -o %t %s %p/Inputs/comdat-rm-dst.ll
|
|
; RUN: FileCheck %s < %t
|
|
; RUN: FileCheck --check-prefix=RM %s < %t
|
|
|
|
target datalayout = "e-m:w-p:32:32-i64:64-f80:32-n8:16:32-S32"
|
|
target triple = "i686-pc-windows-msvc"
|
|
|
|
$foo = comdat largest
|
|
@foo = global i32 42, comdat
|
|
; CHECK-DAG: @foo = global i64 43, comdat
|
|
|
|
; RM-NOT: @alias =
|
|
@alias = alias i32, i32* @foo
|
|
|
|
; We should arguably reject an out of comdat reference to int_alias. Given that
|
|
; the verifier accepts it, test that we at least produce an output that passes
|
|
; the verifier.
|
|
; CHECK-DAG: @int_alias = external global i32
|
|
@int_alias = internal alias i32, i32* @foo
|
|
@bar = global i32* @int_alias
|
|
|
|
@func_alias = alias void (), void ()* @func
|
|
@zed = global void()* @func_alias
|
|
; CHECK-DAG: @zed = global void ()* @func_alias
|
|
; CHECK-DAG: declare void @func_alias()
|
|
|
|
; RM-NOT: @func()
|
|
define void @func() comdat($foo) {
|
|
ret void
|
|
}
|
|
|
|
; RM-NOT: var
|
|
@var = global i32 42, comdat($foo)
|