Initial tests with a GD32VF103VBT6 RISC-V development board:

The code is basically executing the Dhrystone benchmark, with the output sent to the serial pins of the board at 115200 baud.

click on the image below to see a video of the execution:

The board needs to be set to DFU mode (BOOT0 jumper high, BOOT1 low) - then a simple make will build the code (using riscv64-unknown-elf-gcc) and upload it to the board using dfu-util. At the end of the upload, the benchmark starts executing immediately, and reports this:

Dhrystone Benchmark, Version 2.1 (Language: C)
Execution starts...

Final values of the variables used in the benchmark:

Int_Glob:            5
        should be:   5
Bool_Glob:           1
        should be:   1
Ch_1_Glob:           A
        should be:   A
Ch_2_Glob:           B
        should be:   B
Arr_1_Glob[8]:       7
        should be:   7
Arr_2_Glob[8][7]:    1000010
        should be:   Number_Of_Runs + 10
Ptr_Glob->
  Ptr_Comp:          536871000
        should be:   (implementation-dependent)
Discr:             0
      should be:   0
Enum_Comp:         2
      should be:   2
Int_Comp:          17
      should be:   17
Str_Comp:          DHRYSTONE PROGRAM, SOME STRING
      should be:   DHRYSTONE PROGRAM, SOME STRING
Ptr_Comp:          536871000
      should be:   (implementation-dependent), same as above
Discr:             0
      should be:   0
Enum_Comp:         1
      should be:   1
Int_Comp:          18
      should be:   18
Str_Comp:          DHRYSTONE PROGRAM, SOME STRING
      should be:   DHRYSTONE PROGRAM, SOME STRING
Int_1_Loc:           5
        should be:   5
Int_2_Loc:           13
        should be:   13
Int_3_Loc:           7
        should be:   7
Enum_Loc:            1
        should be:   1
Str_1_Loc:           DHRYSTONE PROGRAM, 1'ST STRING
        should be:   DHRYSTONE PROGRAM, 1'ST STRING
Str_2_Loc:           DHRYSTONE PROGRAM, 2'ND STRING
        should be:   DHRYSTONE PROGRAM, 2'ND STRING

Execution ends (after 9687 ms)
Microseconds for one run through Dhrystone: 9
Dhrystones per Second: 103231
VAX MIPS rating = 58