tree d64db61f9f6a8ae17a0aa95d3256ecedcea7d5e8
parent 41062ca842d60abe0fc0d3f24bef599282adcef3
author Peter Smith <peter.smith@linaro.org> 1544699581 +0000
committer Peter Smith <peter.smith@linaro.org> 1544699581 +0000

[ELF][AArch64] Fix adrp to undefined weak reference.

In the ABI for the 64-bit Arm architecture the section on weak references
states:
During linking, the symbol value of an undefined weak reference is:
- Zero if the relocation type is absolute
- The address of the place if the relocation type is pc-relative.

The relocations associated with an ADRP are relative so we should resolve
the undefined weak reference to the place instead of 0. This matches GNU
ld.bfd behaviour.

fixes pr34928

Differential Revision: https://reviews.llvm.org/D55599


git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@349024 91177308-0d34-0410-b5e6-96231b3b80d8