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Author SHA1 Message Date
Jin Lin cedfa38fc4 Preserve the lexical order for global variables during llvm-link merge 
The order of global variables is generated in the order of recursively materializing variables if the global variable has the attribute of hasLocalLinkage or hasLinkOnceLinkage during the module merging. In practice, it is often the exact reverse of source order. This new order may cause performance regression.

The change is to preserve the original lexical order for global variables.

Reviewed By: jdoerfert, dexonsmith

Differential Revision: https://reviews.llvm.org/D94202
 2021-04-26 10:11:34 -07:00
Peter Collingbourne 3cb86272fc Linker: Remove unnecessary call to copyMetadata in IRLinker::linkGlobalVariable. 
This was causing us to create duplicate metadata on global variables.
Debug info test case by Adrian Prantl, additional test cases by me.

Fixes PR31012.

Differential Revision: https://reviews.llvm.org/D26622

llvm-svn: 286905
 2016-11-14 23:18:38 +00:00
Peter Collingbourne 4f7c16dd53 Linker: Copy metadata when linking declarations. 
Differential Revision: http://reviews.llvm.org/D21624

llvm-svn: 273692
 2016-06-24 17:42:21 +00:00