[llvm] [RISCV][GISel] Add initial support for rvv intrinsics (PR #156415)

[Jon Roelofs via llvm-commits]

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@@ -24700,6 +24701,12 @@ bool RISCVTargetLowering::fallBackToDAGISel(const Instruction &Inst) const {
       Op == Instruction::Freeze || Op == Instruction::Store)
     return false;
 
+  if (auto *II = dyn_cast<IntrinsicInst>(&Inst)) {
+    // Mark RVV intrinsic as supported.
+    if (RISCVVIntrinsicsTable::getRISCVVIntrinsicInfo(II->getIntrinsicID()))
+      return false;
+  }
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jroelofs wrote:

okay to keep them here though, because of the comment.

https://github.com/llvm/llvm-project/pull/156415