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3 Commits

Author SHA1 Message Date
Rafael Espindola
0f9028cb29 Don't produce relocations for a difference in a section with no symbols. 
We were producing a relocation for
----------------
.section foo,bar
La:
Lb:
 .long   La-Lb
--------------

but not for

---------------------
  .section foo,bar
zed:
La:
Lb:
 .long   La-Lb
----------------

This patch handles the case where both fragments are part of the first atom
in a section and there is no corresponding symbol to that atom.

This fixes pr21328.

llvm-svn: 221304
 2014-11-04 22:10:33 +00:00
Rafael Espindola
3a5fffd1fe Update test to use llvm-readobj. NFC. 
llvm-svn: 221074
 2014-11-02 01:12:02 +00:00
Kevin Enderby
d37af1a3b4 Fixed a crash in the integrated assembler for Mach-O when a symbol difference 
expression uses an assembler temporary symbol from an assignment.  In this case
the symbol does not have a fragment so the use of getFragment() would be NULL
and caused a crash. In the case of an assembler temporary symbol we want to use
the AliasedSymbol (if any) which will create a local relocation entry, but if
it is not an assembler temporary symbol then let it use that symbol with an
external relocation entry.

rdar://9356266

llvm-svn: 190096
 2013-09-05 20:25:06 +00:00