[Clang] Enable RISC-V support for Fuchsia

We don't have a full sysroot yet, so for now we only include compiler
support and compiler-rt builtins, the rest of the runtimes will get
enabled later.

Differential Revision: https://reviews.llvm.org/D70477

1 files changed, 11 insertions, 3 deletions

diff --git a/clang/lib/Driver/ToolChains/Fuchsia.cpp b/clang/lib/Driver/ToolChains/Fuchsia.cpp
index df2b4724dc2..9bea0b15c87 100644
--- a/clang/lib/Driver/ToolChains/Fuchsia.cpp
+++ b/clang/lib/Driver/ToolChains/Fuchsia.cpp
@@ -224,7 +224,7 @@ Fuchsia::Fuchsia(const Driver &D, const llvm::Triple &Triple,
 std::string Fuchsia::ComputeEffectiveClangTriple(const ArgList &Args,
                                                  types::ID InputType) const {
   llvm::Triple Triple(ComputeLLVMTriple(Args, InputType));
-  return (Triple.getArchName() + "-" + Triple.getOSName()).str();
+  return Triple.str();
 }
 
 Tool *Fuchsia::buildLinker() const {
@@ -344,9 +344,17 @@ SanitizerMask Fuchsia::getSupportedSanitizers() const {
 
 SanitizerMask Fuchsia::getDefaultSanitizers() const {
   SanitizerMask Res;
-  if (getTriple().getArch() == llvm::Triple::aarch64)
+  switch (getTriple().getArch()) {
+  case llvm::Triple::aarch64:
     Res |= SanitizerKind::ShadowCallStack;
-  else
+    break;
+  case llvm::Triple::x86_64:
     Res |= SanitizerKind::SafeStack;
+    break;
+  case llvm::Triple::riscv64:
+    break;
+  default:
+    llvm_unreachable("invalid architecture");
+  }
   return Res;
 }