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llvm-mirror/test/Linker/comdat4.ll
Fangrui Song dd6e19a41c [IR] Rename comdat noduplicates to comdat nodeduplicate
In the textual format, `noduplicates` means no COMDAT/section group
deduplication is performed. Therefore, if both sets of sections are retained, and
they happen to define strong external symbols with the same names,
there will be a duplicate definition linker error.

In PE/COFF, the selection kind lowers to `IMAGE_COMDAT_SELECT_NODUPLICATES`.
The name describes the corollary instead of the immediate semantics.  The name
can cause confusion to other binary formats (ELF, wasm) which have implemented/
want to implement the "no deduplication" selection kind. Rename it to be clearer.

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D106319
2021-07-20 12:47:10 -07:00

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LLVM

; RUN: not llvm-link %s %p/Inputs/comdat3.ll -S -o - 2>&1 | FileCheck %s
$foo = comdat nodeduplicate
@foo = global i64 43, comdat($foo)
; CHECK: Linking COMDATs named 'foo': nodeduplicate has been violated!