[PATCH] D39963: [RISCV][RFC] Add initial RISC-V target and driver support

[Alex Bradbury via Phabricator via cfe-commits]

asb updated this revision to Diff 123229.
asb marked an inline comment as done.
asb added a comment.

Consider this a WIP update. This is not yet ready for merging, but could still benefit from feedback.

This update adds support for RISC-V to the Linux toolchain driver, which includes support for multilib selection. Unfortunately I had to add a special case to lib/Driver/Toolchains/Linux.cpp for adding lib paths laid out according to the RISC-V multilib conventions (e.g. $SYSROOT/lib32/ilp32, $SYSROOT/usr/lib32/ilp32). I notice that Mips had to do something similar, and ended up defining the MipsLinux class.

@jroelofs: Did you have any views one way or the other about extending BareMetal to support RISC-V as well as ARM?


https://reviews.llvm.org/D39963

Files:
  lib/Basic/CMakeLists.txt
  lib/Basic/Targets.cpp
  lib/Basic/Targets/RISCV.cpp
  lib/Basic/Targets/RISCV.h
  lib/Driver/CMakeLists.txt
  lib/Driver/Driver.cpp
  lib/Driver/ToolChains/Arch/RISCV.cpp
  lib/Driver/ToolChains/Arch/RISCV.h
  lib/Driver/ToolChains/Clang.cpp
  lib/Driver/ToolChains/Clang.h
  lib/Driver/ToolChains/Gnu.cpp
  lib/Driver/ToolChains/Linux.cpp
  lib/Driver/ToolChains/RISCV.cpp
  lib/Driver/ToolChains/RISCV.h
  test/Driver/frame-pointer.c
  test/Driver/riscv-abi.c
  test/Driver/riscv-features.c
  test/Driver/riscv32-toolchain.c
  test/Driver/riscv64-toolchain.c
  test/Preprocessor/init.c

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