[all-commits] [llvm/llvm-project] 695238: Write original source language when writing and re...

[Ariel-Burton via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 695238ffaa64ac8f49e7da36d36c5170509007cc
      https://github.com/llvm/llvm-project/commit/695238ffaa64ac8f49e7da36d36c5170509007cc
  Author: Ariel-Burton <arielburton at yahoo.com>
  Date:   2026-07-13 (Mon, 13 Jul 2026)

  Changed paths:
    M clang/lib/Serialization/ASTReader.cpp
    M clang/lib/Serialization/ASTWriter.cpp
    A clang/test/CodeGen/SystemZ/zos-check-lanuage.c

  Log Message:
  -----------
  Write original source language when writing and reading AST (#208115)

FAIL: Clang :: Frontend/ast-main.c
FAIL: Clang :: Frontend/ast-main.cpp

were failing on z/OS; this change fixes these lit failures.

The issue here is that on z/OS the original source code language needs
to be passed through to the IR so that the backend can encode this
information in the PPA2 in the object file. That means that it needs to
be exported to the AST so that going from saved AST -> IR will carry the
language through.



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