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

[Jianjian Guan via llvm-commits]

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@@ -24700,6 +24700,18 @@ bool RISCVTargetLowering::fallBackToDAGISel(const Instruction &Inst) const {
       Op == Instruction::Freeze || Op == Instruction::Store)
     return false;
 
+  if (Op == Instruction::Call) {
+    const CallInst &CI = cast<CallInst>(Inst);
+    const Function *F = CI.getCalledFunction();
+    Intrinsic::ID ID = F ? F->getIntrinsicID() : Intrinsic::not_intrinsic;
+
+    const RISCVVIntrinsicsTable::RISCVVIntrinsicInfo *II =
+        RISCVVIntrinsicsTable::getRISCVVIntrinsicInfo(ID);
+    // Mark RVV intrinsic is supported.
+    if (II)
+      return false;
+  }
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jacquesguan wrote:

Addressed.

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