[llvm] 30b9b28 - [RISCV][GISel] Fallback to SelectionDAG for RVV tuple intrinsics. (#162133)

[via llvm-commits]

Author: Craig Topper
Date: 2025-10-06T13:50:36-07:00
New Revision: 30b9b2823919631ca12d6655792c4e80c7ba6679

URL: https://github.com/llvm/llvm-project/commit/30b9b2823919631ca12d6655792c4e80c7ba6679
DIFF: https://github.com/llvm/llvm-project/commit/30b9b2823919631ca12d6655792c4e80c7ba6679.diff

LOG: [RISCV][GISel] Fallback to SelectionDAG for RVV tuple intrinsics. (#162133)

These intrinsics currently crash in translateCall.

Added: 
    

Modified: 
    llvm/lib/Target/RISCV/RISCVISelLowering.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index b6240765cb30e..6234714dd4799 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -25031,8 +25031,17 @@ bool RISCVTargetLowering::fallBackToDAGISel(const Instruction &Inst) const {
 
   if (auto *II = dyn_cast<IntrinsicInst>(&Inst)) {
     // Mark RVV intrinsic as supported.
-    if (RISCVVIntrinsicsTable::getRISCVVIntrinsicInfo(II->getIntrinsicID()))
+    if (RISCVVIntrinsicsTable::getRISCVVIntrinsicInfo(II->getIntrinsicID())) {
+      // GISel doesn't support tuple types yet.
+      if (Inst.getType()->isRISCVVectorTupleTy())
+        return true;
+
+      for (unsigned i = 0; i < II->arg_size(); ++i)
+        if (II->getArgOperand(i)->getType()->isRISCVVectorTupleTy())
+          return true;
+
       return false;
+    }
   }
 
   if (Inst.getType()->isScalableTy())