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Author SHA1 Message Date
George Rimar c191acf097 [ELF] - Implemented -z combrelocs/nocombreloc. 
This is the option which sorts relocs to optimize dynamic linker performance.
-z combelocs is the default in gold, also it ignores -z nocombreloc,
this patch do the same.

Patch sorts relocations by symbols only and do not create any
DT_REL[A]COUNT entries. That is different with what gold/bfd do.

More information about option is here:
http://www.airs.com/blog/archives/186
http://people.redhat.com/jakub/prelink.pdf, p.2

Differential revision: http://reviews.llvm.org/D19528

llvm-svn: 269066
 2016-05-10 15:47:57 +00:00
Rafael Espindola ac95264d62 Don't depend on dynamic relocatinos in ro sections. 
Currently we don't check when creating relative relocations if the
section is read only or not. I am about to fix that, so first update the
patches that depend on the current behavior.

llvm-svn: 268542
 2016-05-04 20:25:19 +00:00
Rafael Espindola 1bf2f191b6 Split a testcase. 
I will make changes to the -shared side and this reduces the noise in
the other patch.

llvm-svn: 268538
 2016-05-04 20:06:49 +00:00