[all-commits] [llvm/llvm-project] ddc30f: [libc] Implement the 'ungetc' function on the GPU ...

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ddc30ff802eb135934fc7b785d33c05217ab9e39
      https://github.com/llvm/llvm-project/commit/ddc30ff802eb135934fc7b785d33c05217ab9e39
  Author: Joseph Huber <35342157+jhuber6 at users.noreply.github.com>
  Date:   2023-10-17 (Tue, 17 Oct 2023)

  Changed paths:
    M libc/config/gpu/entrypoints.txt
    M libc/docs/gpu/support.rst
    M libc/include/llvm-libc-types/rpc_opcodes_t.h
    M libc/src/stdio/CMakeLists.txt
    M libc/src/stdio/generic/CMakeLists.txt
    A libc/src/stdio/generic/ungetc.cpp
    M libc/src/stdio/gpu/CMakeLists.txt
    A libc/src/stdio/gpu/ungetc.cpp
    R libc/src/stdio/ungetc.cpp
    M libc/test/src/stdio/ungetc_test.cpp
    M libc/utils/gpu/server/rpc_server.cpp

  Log Message:
  -----------
  [libc] Implement the 'ungetc' function on the GPU (#69248)

Summary:
This function follows closely with the pattern of all the other
functions. That is, making a new opcode and forwarding the call to the
host. However, this also required modifying the test somewhat. It seems
that not all `libc` implementations follow the same error rules as are
tested here, and it is not explicit in the standard, so we simply
disable these EOF checks when targeting the GPU.