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713cab059e
When a linkonce_odr value that is on the dso list is not unnamed_addr we can still look to see if anything is actually using its address. If not, it is safe to hide it. This patch implements that by moving GlobalStatus to Transforms/Utils and using it in Internalize. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193090 91177308-0d34-0410-b5e6-96231b3b80d8
38 lines
1.1 KiB
LLVM
38 lines
1.1 KiB
LLVM
; RUN: llvm-as < %s >%t1
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; RUN: llvm-lto -o %t2 %t1
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; RUN: llvm-nm %t2 | FileCheck %s -check-prefix=NOEXPORT
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; RUN: llvm-lto -o %t3 -exported-symbol=main %t1
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; RUN: llvm-nm %t3 | FileCheck %s -check-prefix=EXPORT
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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module asm ".text"
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module asm ".align 16, 0x90"
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module asm ".type PR14512, @function"
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module asm "PR14512:.cfi_startproc"
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module asm "ret"
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module asm ".cfi_endproc"
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declare void @PR14512()
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; Without -exported-symbol, main should be eliminated by LTO.
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; With -exported-symbol=main, main should be preserved by LTO.
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define i32 @main(i32 %argc, i8** %argv) {
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; NOEXPORT-NOT: main
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; EXPORT: main
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call void @PR14512()
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ret i32 0
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}
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; RUN: llvm-lto -o %t -dso-symbol=zed1 -dso-symbol=zed2 %t1 -disable-opt
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; RUN: llvm-nm %t | FileCheck %s -check-prefix=ZED1_AND_ZED2
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; ZED1_AND_ZED2: V zed1
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@zed1 = linkonce_odr global i32 42
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define i32* @get_zed1() {
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ret i32* @zed1
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}
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; ZED1_AND_ZED2: d zed2
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@zed2 = linkonce_odr unnamed_addr global i32 42
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