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3 Commits

Author SHA1 Message Date
Fangrui Song b6772b86e2 [ELF] Move `// REQUIRES:` line to the top 
llvm-svn: 335676
 2018-06-26 22:20:04 +00:00
Peter Smith f0c70f8d34 [ELF] Pre-create ThunkSections at Target specific intervals 
When an OutputSection is larger than the branch range for a Target we
need to place thunks such that they are always in range of their caller,
and sufficiently spaced to maximise the number of callers that can use
the thunk. We use the simple heuristic of placing the
ThunkSection at intervals corresponding to a target specific branch range.
If the OutputSection is small we put the thunks at the end of the executable
sections.

Differential Revision: https://reviews.llvm.org/D34689

llvm-svn: 316751
 2017-10-27 08:58:28 +00:00
Peter Smith 28285576cb [ELF] Be more precise about Thumb state bit in ARM thunks 
The symbols generated for Thunks have type STT_FUNC, to permit a thunk to
be reused via a blx instruction the Thumb bit (0) needs to be set properly.

Differential Revision: https://reviews.llvm.org/D34036

llvm-svn: 305065
 2017-06-09 09:51:51 +00:00