llvm-project

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# REQUIRES: x86
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# RUN: rm -rf %t; split-file %s %t
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/foo.s -o %t/foo.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/bar.s -o %t/bar.o
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## "_llvm." symbols are not special. LLD would produce duplicate symbol errors
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## if they were not within the LLVM segment.
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## 1/ Test that LLD does not produce duplicate symbols errors when linking global symbols
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##    with the same name under the LLVM segment.
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# RUN: %lld -dylib %t/foo.o %t/bar.o -o %t/libDuplicate.dylib
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## 2/ Test that all sections within an LLVM segment are dropped.
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# RUN: llvm-objdump --section-headers %t/libDuplicate.dylib | FileCheck %s
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# CHECK-LABEL: Sections:
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# CHECK-NEXT:  Idx  Name    Size      VMA            Type
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# CHECK-NEXT:  0    __text  00000000  {{[0-9a-f]+}}  TEXT
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## 3/ Test that linking global symbol that is not under the LLVM segment produces duplicate
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##    symbols
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin --defsym TEXT=0 %t/foo.s -o %t/foo.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin --defsym TEXT=0 %t/bar.s -o %t/bar.o
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# RUN: not %lld -dylib %t/foo.o %t/bar.o -o %t/libDuplicate.dylib 2>&1 | FileCheck %s --check-prefix=DUP
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# DUP: error: duplicate symbol: _llvm.foo
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#--- foo.s
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.globl _llvm.foo
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.ifdef TEXT
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  .section __TEXT,__cstring
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.else
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  .section __LLVM,__bitcode
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.endif
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  _llvm.foo:
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    .asciz "test"
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#--- bar.s
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.globl _llvm.foo
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.ifdef TEXT
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  .section __TEXT,__cstring
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.else
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  .section __LLVM,__bitcode
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.endif
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  _llvm.foo:
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    .asciz "test"
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