Creating release candidate rc5 from release_900 branch

llvm-svn: 371837
Merging r371766:
------------------------------------------------------------------------
r371766 | nickdesaulniers | 2019-09-12 21:53:35 +0200 (Thu, 12 Sep 2019) | 29 lines

[Clang][CodeGen] support alias attribute w/ gnu_inline

Summary:
r369705 did not consider the addition of gnu_inline on function
declarations of alias attributed functions. This resulted in a reported
regression in the clang-9-rc4 release from the Zig developers building
glibc, which was observable as a failed assertion:

llvm-project/clang/lib/AST/Decl.cpp:3336: bool
clang::FunctionDecl::isInlineDefinitionExternallyVisible() const:
Assertion `(doesThisDeclarationHaveABody() || willHaveBody()) && "Must
be a function definition"' failed.

Alias function declarations do not have bodies, so allow us to proceed
if we have the alias function attribute but no body/definition, and add
a test case.  The emitted symbols and their linkage matches GCC for the
added test case.

Link: https://bugs.llvm.org/show_bug.cgi?id=43268

Reviewers: aaron.ballman, rsmith, erichkeane, andrewrk

Reviewed By: andrewrk

Subscribers: cfe-commits, andrewrk, hans, srhines

Tags: #clang

Differential Revision: https://reviews.llvm.org/D67455
------------------------------------------------------------------------

llvm-svn: 371821
2 files changed
tree: be3a9fbdeadfe9f6a9e94000a29e4e8c27c17de1
  1. .arcconfig
  2. .clang-format
  3. .clang-tidy
  4. .gitignore
  5. README.md
  6. clang-tools-extra/
  7. clang/
  8. compiler-rt/
  9. debuginfo-tests/
  10. libclc/
  11. libcxx/
  12. libcxxabi/
  13. libunwind/
  14. lld/
  15. lldb/
  16. llgo/
  17. llvm/
  18. openmp/
  19. parallel-libs/
  20. polly/
  21. pstl/
README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.