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llvm-mirror/test/CodeGen/X86/macho-comdat.ll
David Majnemer abf7854d05 IR: Add COMDATs to the IR
This new IR facility allows us to represent the object-file semantic of
a COMDAT group.

COMDATs allow us to tie together sections and make the inclusion of one
dependent on another. This is required to implement features like MS
ABI VFTables and optimizing away certain kinds of initialization in C++.

This functionality is only representable in COFF and ELF, Mach-O has no
similar mechanism.

Differential Revision: http://reviews.llvm.org/D4178

llvm-svn: 211920
2014-06-27 18:19:56 +00:00

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LLVM

; RUN: not llc -mtriple x86_64-apple-darwin < %s 2> %t
; RUN: FileCheck < %t %s
$f = comdat any
@v = global i32 0, comdat $f
; CHECK: LLVM ERROR: MachO doesn't support COMDATs, 'f' cannot be lowered.