[PATCH] D68407: [WIP][RISCV] Use compiler-rt if no GCC installation detected

[Edward Jones via Phabricator via cfe-commits]

edward-jones updated this revision to Diff 229273.
edward-jones added a comment.

It seems that the option `--rtlib=platform` exists to force the driver to ignore the `-DCLANG_DEFAULT_RTLIB` for testing purposes, so I've added this option to the tests that were broken.

These tests now seem to pass regardless of whether `CLANG_DEFAULT_RTLIB` is set to `compiler-rt` or `libgcc`.

I'm leaving this WIP as I think it will be prudent to add some tests for `--rtlib=compiler` and `--rtlib=libgcc`.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D68407/new/

https://reviews.llvm.org/D68407

Files:
  clang/lib/Driver/ToolChains/RISCVToolchain.cpp
  clang/lib/Driver/ToolChains/RISCVToolchain.h
  clang/test/Driver/Inputs/basic_riscv32_nogcc_tree/riscv32-unknown-elf/lib/crtbegin.o
  clang/test/Driver/Inputs/basic_riscv32_nogcc_tree/riscv32-unknown-elf/lib/crtend.o
  clang/test/Driver/Inputs/basic_riscv64_nogcc_tree/riscv64-unknown-elf/lib/crtbegin.o
  clang/test/Driver/Inputs/basic_riscv64_nogcc_tree/riscv64-unknown-elf/lib/crtend.o
  clang/test/Driver/riscv32-toolchain-extra.c
  clang/test/Driver/riscv32-toolchain.c
  clang/test/Driver/riscv64-toolchain-extra.c
  clang/test/Driver/riscv64-toolchain.c

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