1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 47f20a2b456..547250375aa 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -26661,6 +26661,15 @@ unsigned X86TargetLowering::ComputeNumSignBitsForTargetNode(
     return Tmp;
   }
 
+  case X86ISD::VSRAI: {
+    SDValue Src = Op.getOperand(0);
+    unsigned Tmp = DAG.ComputeNumSignBits(Src, Depth + 1);
+    unsigned VTBits = Op.getValueType().getScalarSizeInBits();
+    APInt ShiftVal = cast<ConstantSDNode>(Op.getOperand(1))->getAPIntValue();
+    ShiftVal += Tmp;
+    return ShiftVal.uge(VTBits) ? VTBits : ShiftVal.getZExtValue();
+  }
+
   case X86ISD::PCMPGT:
   case X86ISD::PCMPEQ:
   case X86ISD::CMPP: