[all-commits] [llvm/llvm-project] fe616e: [libc] Implement alloca.h header (#210150)

[Jeff Bailey via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fe616e4d87cfbce9317537aa95e6068ac103a373
      https://github.com/llvm/llvm-project/commit/fe616e4d87cfbce9317537aa95e6068ac103a373
  Author: Jeff Bailey <jbailey at raspberryginger.com>
  Date:   2026-07-16 (Thu, 16 Jul 2026)

  Changed paths:
    M libc/config/linux/aarch64/headers.txt
    M libc/config/linux/arm/headers.txt
    M libc/config/linux/i386/headers.txt
    M libc/config/linux/riscv/headers.txt
    M libc/config/linux/x86_64/headers.txt
    M libc/include/CMakeLists.txt
    A libc/include/alloca.yaml
    M libc/include/llvm-libc-macros/CMakeLists.txt
    A libc/include/llvm-libc-macros/alloca-macros.h
    M libc/test/include/CMakeLists.txt
    A libc/test/include/alloca_test.cpp

  Log Message:
  -----------
  [libc] Implement alloca.h header (#210150)

Implemented the alloca.h header for LLVM libc.

* libc/include/llvm-libc-macros/alloca-macros.h: Defined alloca macro
using __builtin_alloca.
* libc/include/alloca.yaml: Added header specification.
* libc/include/CMakeLists.txt,
libc/include/llvm-libc-macros/CMakeLists.txt: Registered the new header
and macro targets.
* libc/config/linux/*/headers.txt: Enabled the header for Linux targets
(x86_64, aarch64, arm, i386, riscv).
* libc/test/include/alloca_test.cpp, libc/test/include/CMakeLists.txt:
Added and registered functional unit tests.

Tested by running the new unit and hermetic tests.

Assisted-by: Automated tooling, human reviewed.



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