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llvm-project/lld/test/ELF/lto/linkage.ll

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[lto] Don't add variables with private linkage to the symbol table. Summary: This causes the issue in PR26872 to go away now that we aren't creating symbols for the string literals, but that may just be concealing a deeper problem, so best to keep that PR open. Reviewers: rafael Subscribers: Bigcheese, llvm-commits, joker.eph Differential Revision: http://reviews.llvm.org/D17971 llvm-svn: 262968
2016-03-09 07:50:56 +08:00
; REQUIRES: x86
; RUN: llvm-as %s -o %t1.o
; RUN: ld.lld -m elf_x86_64 %t1.o %t1.o -o %t.so -shared
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Should not encounter a duplicate symbol error for @.str
@.str = private unnamed_addr constant [4 x i8] c"Hey\00", align 1
[lto] Avoid duplicate symbol error for appending linkage. Summary: Is there any other code needed for correctly handling appending linkage? Do we need to do something more with @llvm.global_ctors in SymbolTable.cpp:addBitcodeFile; otherwise the combined bitcode module won't have all the global ctors. Reviewers: rafael Subscribers: Bigcheese, llvm-commits, joker.eph Differential Revision: http://reviews.llvm.org/D17975 llvm-svn: 262992
2016-03-09 11:42:39 +08:00
; Should not encounter a duplicate symbol error for @llvm.global_ctors
@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @ctor, i8* null }]
define internal void @ctor() {
ret void
}
[lto] Add a useful test case. This is reduced from an issue found in practice. The original version of D18012 needed another patch to handle this, but it now works since we are using a more correct GV->hasAppendingLinkage() check that Rafael suggested. This is what remains of that other patch. llvm-svn: 263181
2016-03-11 09:10:37 +08:00
; Should not try to merge a declaration into the combined module.
declare i32 @llvm.ctpop.i32(i32)