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Author SHA1 Message Date
Rafael Espindola 0b9531c8e6 Bring r267164 back with a fix. 
The fix is to handle local symbols referring to SHF_MERGE sections.

Original message:

GC entries of SHF_MERGE sections.

It is a fairly direct extension of the gc algorithm. For merge sections
instead of remembering just a live bit, we remember which offsets
were used.

This reduces the .rodata sections in chromium from 9648861 to 9477472
bytes.

llvm-svn: 267233
 2016-04-22 22:09:35 +00:00
Rafael Espindola 46c039f2c0 Revert "GC entries of SHF_MERGE sections." 
This reverts commit r267164.

    Revert "Trying to fix the windows build."

    This reverts commit r267168.

Debugging a bootstrap problem.

llvm-svn: 267194
 2016-04-22 19:31:35 +00:00
Rafael Espindola caa831d85a GC entries of SHF_MERGE sections. 
It is a fairly direct extension of the gc algorithm. For merge sections
instead of remembering just a live bit, we remember which offsets were
used.

This reduces the .rodata sections in chromium from 9648861 to 9477472
bytes.

llvm-svn: 267164
 2016-04-22 16:46:08 +00:00