[all-commits] [llvm/llvm-project] 1c0b03: [flang][driver] Support parsing response files

[Diana via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1c0b03f6e706978f2e87408f7fd5e4c846d6c9a8
      https://github.com/llvm/llvm-project/commit/1c0b03f6e706978f2e87408f7fd5e4c846d6c9a8
  Author: Diana Picus <diana.picus at linaro.org>
  Date:   2022-05-18 (Wed, 18 May 2022)

  Changed paths:
    A flang/test/Driver/response-file.f90
    M flang/tools/flang-driver/driver.cpp

  Log Message:
  -----------
  [flang][driver] Support parsing response files

Add support for reading response files in the flang driver. Response
files contain command line arguments and are used whenever a command
becomes longer than the shell/environment limit. Response files are
recognized via the special "@path/to/response/file.rsp" syntax, which
distinguishes them from other file inputs.

This patch hardcodes GNU tokenization, since we don't have a CL mode for
the driver. In the future we might want to add a --rsp-quoting command
line option, like clang has, to accommodate Windows platforms.

Differential Revision: https://reviews.llvm.org/D124846