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Fangrui Song 7afffb54ea [ELF] Don't shrink RelrSection 
Fixes PR43214.

The size of SHT_RELR may oscillate between 2 numbers (see D53003 for a
similar --pack-dyn-relocs=android issue). This can happen if the shrink
of SHT_RELR causes it to take more words to encode relocation offsets
(this can happen with thunks or segments with overlapping p_offset
ranges), and the expansion of SHT_RELR causes it to take fewer words to
encode relocation offsets.

To avoid the issue, add padding 1s to the end of the relocation section
if its size would decrease. Trailing 1s do not decode to more relocations.

Reviewed By: peter.smith

Differential Revision: https://reviews.llvm.org/D67164

llvm-svn: 370923
 		2019-09-04 16:27:35 +00:00
..
COFF reland "[lld-link] implement -start-lib and -end-lib" 2019-09-03 20:32:16 +00:00
Driver/Inputs
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ELF [ELF] Don't shrink RelrSection 2019-09-04 16:27:35 +00:00
MinGW [MinGW] Correct handling different forms of a few options 2019-08-14 09:35:44 +00:00
Unit
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darwin
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mach-o [test] Change llvm-readobj -long-option to --long-option or well-known short options. NFC 2019-05-01 05:49:01 +00:00
wasm [lld][WebAssembly] Fix spurious signature mismatch warnings 2019-08-30 19:50:59 +00:00
CMakeLists.txt lld-link: Reject more than one resource .obj file 2019-06-11 15:22:28 +00:00
lit.cfg.py ELF: Change FileSize back to a uint64_t. 2019-03-01 18:53:41 +00:00
lit.site.cfg.py.in ELF: Change FileSize back to a uint64_t. 2019-03-01 18:53:41 +00:00