[PATCH] D128625: [RISCV][Driver] Fix baremetal `GCCInstallation` paths

[Anton Afanasyev via Phabricator via cfe-commits]

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  In general gcc toolchain folder contains several targets, for instance,
  baremetal and Linux ones. The precommitted tests address this case by
  adding `riscv64-unknown-linux-gnu/` to toolchain folder. This breaks driver's
  include and lib paths, since riscv baremetal triple is now normalized to
  "riscv{32|64}-unknown-unknown-elf" rather than just to "riscv{32|64}-unknown-elf",
  and `GCCInstallation` uses this search priority: "riscv{32|64}-unknown-linux-gnu",
  "riscv{32|64}-linux-gnu", "riscv{32|64}-unknown-elf", choosing Linux target.
  
  This patch fixes this issue by passing triple alias for baremetal target.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D128625

Files:
  clang/lib/Driver/ToolChains/RISCVToolchain.cpp
  clang/test/Driver/riscv32-toolchain.c
  clang/test/Driver/riscv64-toolchain.c

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