[all-commits] [llvm/llvm-project] 25ec96: [Clang][Driver] Recognize the AIX OBJECT_MODE envi...

[David Tenty via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 25ec96d91a3a5326a403496fa5532ff0bdb6a15b
      https://github.com/llvm/llvm-project/commit/25ec96d91a3a5326a403496fa5532ff0bdb6a15b
  Author: David Tenty <daltenty at ibm.com>
  Date:   2020-07-09 (Thu, 09 Jul 2020)

  Changed paths:
    M clang/include/clang/Basic/DiagnosticDriverKinds.td
    M clang/lib/Driver/Driver.cpp
    A clang/test/Driver/aix-object-mode.c

  Log Message:
  -----------
  [Clang][Driver] Recognize the AIX OBJECT_MODE environment setting

Summary:
AIX uses an environment variable called OBJECT_MODE to indicate to
utilities in the toolchain whether they should be operating in 32-bit or
64-bit mode. This patch makes the clang driver recognize the current
OBJECT_MODE setting when we are operating with an AIX target and adds a
custom diagnostic for invalid settings.

For more details about OBJECT_MODE on AIX see:

https://www.ibm.com/support/knowledgecenter/SSGH2K_13.1.3/com.ibm.xlc1313.aix.doc/compiler_ref/tusetenv1.html
https://www.ibm.com/support/knowledgecenter/SSGH2K_13.1.3/com.ibm.xlc1313.aix.doc/compiler_ref/opt_3264.html

Reviewers: stevewan, hubert.reinterpretcast, ShuhongL, jasonliu

Reviewed By: hubert.reinterpretcast, jasonliu

Subscribers: jasonliu, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D82476