[all-commits] [llvm/llvm-project] ab77fa: [AIX][XCOFF][Patch2] decode vector information and...

[diggerlin via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: ab77fa515583ca906f2cb09a5f5e1ea3c48ec725
      https://github.com/llvm/llvm-project/commit/ab77fa515583ca906f2cb09a5f5e1ea3c48ec725
  Author: diggerlin <digger.llvm at gmail.com>
  Date:   2020-11-19 (Thu, 19 Nov 2020)

  Changed paths:
    M llvm/include/llvm/BinaryFormat/XCOFF.h
    M llvm/include/llvm/Object/XCOFFObjectFile.h
    M llvm/lib/Object/XCOFFObjectFile.cpp
    M llvm/unittests/Object/XCOFFObjectFileTest.cpp

  Log Message:
  -----------
  [AIX][XCOFF][Patch2] decode vector information and extent long table of the traceback table of the xcoff.

SUMMARY:

1. decode the Vector extension if has_vec is set
2. decode long table fields, if longtbtable is set.

There is conflict on the bit order of HasVectorInfoMask and HasExtensionTableMask between AIX os header and IBM aix compiler XLC.
In the /usr/include/sys/debug.h defines
static constexpr uint32_t HasVectorInfoMask = 0x0040'0000;
static constexpr uint32_t HasExtensionTableMask = 0x0080'0000;
but the XLC defines as

static constexpr uint32_t HasVectorInfoMask = 0x0080'0000;
static constexpr uint32_t HasExtensionTableMask = 0x0040'0000;
we follows the definition of the IBM AIX compiler XLC here.

Reviewer: Jason Liu

Differential Revision: https://reviews.llvm.org/D86461