[PATCH] D58378: [PowerPC]Leverage the addend in the TOC relocation to do the address calculation

[qshanz via Phabricator via llvm-commits]

steven.zhang added a comment.

I get the reason about 0x8000 now.

  #ha(value) Denotes the high adjusted value: bits 16 - 63 of the indicated value, compensating
  for #lo() being treated as a signed number. That is:
  #ha(x) = (x + 0x8000) >> 16

  The TOC region commonly includes data items within the .got, .toc, .sdata, and .sbss sections. In the medium
  code model, they can be addressed with 32-bit signed offsets from the TOC pointer register. The TOC pointer
  register typically points to the beginning of the .got section + 0x8000, which permits a 2 GB TOC with the
  medium and large code models.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D58378/new/

https://reviews.llvm.org/D58378