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61 lines
2.2 KiB
61 lines
2.2 KiB
4 months ago
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; Without -only-needed we should lazy link linkonce globals, and the
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; metadata reference should not cause them to be linked.
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; RUN: llvm-link -S %S/Inputs/only-needed-named-metadata.ll %S/only-needed-named-metadata.ll | FileCheck %s
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; CHECK-NOT:@U_linkonce
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; CHECK-NOT:@unused_linkonce()
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; With -only-needed the metadata references should not cause any of the
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; otherwise unreferenced globals to be linked. This also ensures that the
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; metadata references don't provoke the module linker to create declarations,
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; which are illegal for aliases and globals in comdats.
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; Note that doing -only-needed with the comdat shown below leads to a only
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; part of the comdat group being linked, which is not technically correct.
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; RUN: llvm-link -S -only-needed %S/Inputs/only-needed-named-metadata.ll %S/only-needed-named-metadata.ll | FileCheck %s -check-prefix=ONLYNEEDED
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; RUN: llvm-link -S -internalize -only-needed %S/Inputs/only-needed-named-metadata.ll %S/only-needed-named-metadata.ll | FileCheck %s -check-prefix=ONLYNEEDED
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; ONLYNEEDED-NOT:@U
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; ONLYNEEDED-NOT:@U_linkonce
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; ONLYNEEDED-NOT:@unused()
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; ONLYNEEDED-NOT:@unused_linkonce()
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; ONLYNEEDED-NOT:@linkoncealias
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; ONLYNEEDED-NOT:@linkoncefunc2()
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; ONLYNEEDED-NOT:@weakalias
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; ONLYNEEDED-NOT:@globalfunc1()
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; ONLYNEEDED-NOT:@analias
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; ONLYNEEDED-NOT:@globalfunc2()
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@X = global i32 5
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@U = global i32 6
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@U_linkonce = linkonce_odr hidden global i32 6
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define i32 @foo() { ret i32 7 }
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define i32 @unused() { ret i32 8 }
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define linkonce_odr hidden i32 @unused_linkonce() { ret i32 8 }
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@linkoncealias = alias void (...), bitcast (void ()* @linkoncefunc2 to void (...)*)
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@weakalias = weak alias void (...), bitcast (void ()* @globalfunc1 to void (...)*)
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@analias = alias void (...), bitcast (void ()* @globalfunc2 to void (...)*)
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define void @globalfunc1() #0 {
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entry:
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ret void
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}
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define void @globalfunc2() #0 {
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entry:
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ret void
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}
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$linkoncefunc2 = comdat any
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define linkonce_odr void @linkoncefunc2() #0 comdat {
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entry:
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ret void
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}
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!llvm.named = !{!0, !1, !2, !3, !4, !5, !6}
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!0 = !{i32 ()* @unused}
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!1 = !{i32* @U}
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!2 = !{i32 ()* @unused_linkonce}
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!3 = !{i32* @U_linkonce}
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!4 = !{void (...)* @weakalias}
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!5 = !{void (...)* @analias}
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!6 = !{void (...)* @linkoncealias}
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