fix(mgb): make error infomation of invalid MatMul more readable

GitOrigin-RevId: 96b922dd20

dnn/src/common/batched_matrix_mul.cpp

@@ -22,7 +22,13 @@ void BatchedMatrixMulForward::deduce_dtype(DType A, DType B, DType& C) {
     }
     megdnn_assert(
             C.valid() && (C == C_candi || C == C_candi2),
-            "unsupported BatchedMatMul(%s, %s) -> %s", A.name(), B.name(), C.name());
+            "runtime does not support BatchedMatMul(%s, %s) -> %s\n"
+            "now support case list: BatchedMatMul(FLOAT, FLOAT)\n"
+            "                       BatchedMatMul(Int8, Int8)\n"
+            "                       BatchedMatMul(QuantizedS8, QuantizedS8)\n"
+            "                       BatchedMatMul(Quantized8Asymm, Quantized8Asymm)\n"
+            "                       BatchedMatMul(Quantized4Asymm, Quantized4Asymm)\n",
+            A.name(), B.name(), C.name());
 }
 void BatchedMatrixMulForward::deduce_layout(
         const TensorLayout& A, const TensorLayout& B, TensorLayout& C) {

dnn/src/common/matrix_mul.cpp

@@ -31,7 +31,15 @@ void MatrixMulForward::deduce_dtype(DType A, DType B, DType& C) {
     }
     megdnn_assert(
             C.valid() && (C == C_candi || C == C_candi2),
-            "unsupported MatMul(%s, %s) -> %s", A.name(), B.name(), C.name());
+            "runtime does not support MatMul(%s, %s) -> %s\n"
+            "now support case list: MatMul(FLOAT, FLOAT)\n"
+            "                       MatMul(Int8, Int8)\n"
+            "                       MatMul(Int16, Int16)\n"
+            "                       MatMul(QuantizedS8, QuantizedS8)\n"
+            "                       MatMul(Quantized8Asymm, Quantized8Asymm)\n"
+            "                       MatMul(Quantized4Asymm, Quantized4Asymm)\n"
+            "                       MatMul(QuantizedS4, QuantizedS4)\n",
+            A.name(), B.name(), C.name());
 }
 
 void MatrixMulForward::deduce_layout(

dnn/src/cuda/matrix_mul/naive.cpp

@@ -65,7 +65,14 @@ void MatrixMulForwardImpl::AlgoNaive::exec(const ExecArgs& args) const {
 #undef DISPATCH_CMODE
 #undef DISPATCH
     megdnn_throw(ssprintf(
-            "unsupported Matmul(%s, %s) -> %s with cmode = %d",
+            "runtime does not support MatMul(%s, %s) -> %s with cmode = %d\n"
+            "now support case list: MatMul(FLOAT, FLOAT)\n"
+            "                       MatMul(Int8, Int8)\n"
+            "                       MatMul(Int16, Int16)\n"
+            "                       MatMul(QuantizedS8, QuantizedS8)\n"
+            "                       MatMul(Quantized8Asymm, Quantized8Asymm)\n"
+            "                       MatMul(Quantized4Asymm, Quantized4Asymm)\n"
+            "                       MatMul(QuantizedS4, QuantizedS4)\n",
             args.layout_a.dtype.name(), args.layout_b.dtype.name(),
             args.layout_c.dtype.name(), static_cast<int>(param.compute_mode)));
 }