[mlir][emitc] Support conversion of arith.divsi and arith.remsi to EmitC (#93450)

Author: josel-amd

mlir/lib/Conversion/ArithToEmitC/ArithToEmitC.cpp

@@ -394,7 +394,9 @@ void mlir::populateArithToEmitCPatterns(TypeConverter &typeConverter,
     ArithConstantOpConversionPattern,
     ArithOpConversion<arith::AddFOp, emitc::AddOp>,
     ArithOpConversion<arith::DivFOp, emitc::DivOp>,
+    ArithOpConversion<arith::DivSIOp, emitc::DivOp>,
     ArithOpConversion<arith::MulFOp, emitc::MulOp>,
+    ArithOpConversion<arith::RemSIOp, emitc::RemOp>,
     ArithOpConversion<arith::SubFOp, emitc::SubOp>,
     IntegerOpConversion<arith::AddIOp, emitc::AddOp>,
     IntegerOpConversion<arith::MulIOp, emitc::MulOp>,

mlir/test/Conversion/ArithToEmitC/arith-to-emitc.mlir

@@ -88,6 +88,17 @@ func.func @arith_index(%arg0: index, %arg1: index) {
 
 // -----
 
+// CHECK-LABEL: arith_signed_integer_div_rem
+func.func @arith_signed_integer_div_rem(%arg0: i32, %arg1: i32) {
+  // CHECK: emitc.div %arg0, %arg1 : (i32, i32) -> i32
+  %0 = arith.divsi %arg0, %arg1 : i32
+  // CHECK: emitc.rem %arg0, %arg1 : (i32, i32) -> i32
+  %1 = arith.remsi %arg0, %arg1 : i32
+  return
+}
+
+// -----
+
 func.func @arith_select(%arg0: i1, %arg1: tensor<8xi32>, %arg2: tensor<8xi32>) -> () {
   // CHECK: [[V0:[^ ]*]] = emitc.conditional %arg0, %arg1, %arg2 : tensor<8xi32>
   %0 = arith.select %arg0, %arg1, %arg2 : i1, tensor<8xi32>