Merge remote-tracking branch 'dotnet/main' into avx512-equality

src/coreclr/jit/hwintrinsiccodegenxarch.cpp

@@ -1786,6 +1786,29 @@ void CodeGen::genAvxFamilyIntrinsic(GenTreeHWIntrinsic* node)
             break;
         }
 
+        case NI_AVX512F_ConvertToVector128Int16:
+        case NI_AVX512F_ConvertToVector128Int32:
+        case NI_AVX512F_ConvertToVector128UInt16:
+        case NI_AVX512F_ConvertToVector128UInt32:
+        case NI_AVX512F_ConvertToVector256Int16:
+        case NI_AVX512F_ConvertToVector256Int32:
+        case NI_AVX512F_ConvertToVector256UInt16:
+        case NI_AVX512F_ConvertToVector256UInt32:
+        case NI_AVX512BW_ConvertToVector128Byte:
+        case NI_AVX512BW_ConvertToVector128SByte:
+        case NI_AVX512BW_ConvertToVector256Byte:
+        case NI_AVX512BW_ConvertToVector256SByte:
+        {
+            // These instructions are RM_R and so we need to ensure the targetReg
+            // is passed in as the RM register and op1 is passed as the R register
+
+            op1Reg          = op1->GetRegNum();
+            instruction ins = HWIntrinsicInfo::lookupIns(intrinsicId, baseType);
+
+            emit->emitIns_R_R(ins, attr, op1Reg, targetReg);
+            break;
+        }
+
         default:
             unreached();
             break;