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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
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; RUN: FileCheck %s < %t
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; RUN: FileCheck --check-prefix=RM %s < %t
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target datalayout = "e-m:w-p:32:32-i64:64-f80:32-n8:16:32-S32"
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target triple = "i686-pc-windows-msvc"
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$foo = comdat largest
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@foo = global i32 42, comdat
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; CHECK-DAG: @foo = global i64 43, comdat
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; RM-NOT: @alias =
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@alias = alias i32, i32* @foo
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; We should arguably reject an out of comdat reference to int_alias. Given that
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; the verifier accepts it, test that we at least produce an output that passes
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; the verifier.
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; CHECK-DAG: @int_alias = external global i32
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@int_alias = internal alias i32, i32* @foo
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@bar = global i32* @int_alias
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@func_alias = alias void (), void ()* @func
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@zed = global void()* @func_alias
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; CHECK-DAG: @zed = global void ()* @func_alias
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; CHECK-DAG: declare void @func_alias()
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; RM-NOT: @func()
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define void @func() comdat($foo) {
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ret void
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}
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; RM-NOT: var
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@var = global i32 42, comdat($foo)
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