This can happen if:
* It is present in a comdat in one file.
* It is not present in the comdat of the file that is kept.
* Is is not used.
This should fix the LTO boostrap.
Thanks to Takumi NAKAMURA for setting up the bot!
llvm-svn: 225983
$c2 = comdat any
+$c1 = comdat any
+
+; This is only present in this file. The linker will keep $c1 from the first
+; file and this will be undefined.
+@will_be_undefined = global i32 1, comdat($c1)
@v1 = weak_odr global i32 41, comdat($c2)
define weak_odr protected i32 @f1(i8* %this) comdat($c2) {
case LDPR_RESOLVED_IR:
case LDPR_RESOLVED_EXEC:
case LDPR_RESOLVED_DYN:
- case LDPR_UNDEF:
assert(GV->isDeclarationForLinker());
break;
+ case LDPR_UNDEF:
+ assert(GV->hasComdat());
+ Drop.insert(GV);
+ break;
+
case LDPR_PREVAILING_DEF_IRONLY: {
keepGlobalValue(*GV, KeptAliases);
if (!Used.count(GV)) {