RISC-V: Cleanup unused code in riscv_v_adjust_bytesize [NFC]

Cleanup mode_size related code which is not used anymore. Below tests are
passed for this patch.

* The RVV fully regresssion test.

gcc/ChangeLog:

	* config/riscv/riscv.cc (riscv_v_adjust_bytesize): Cleanup unused
	mode_size related code.

Signed-off-by: Pan Li <pan2.li@intel.com>

diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
index 56cd8d2c23f497b56296c4c933e174a6f7c82fad..691d967de29024711152a30e42a8b0401f5ef31a 100644 (file)
--- a/gcc/config/riscv/riscv.cc
+++ b/gcc/config/riscv/riscv.cc
@@ -1527,10 +1527,6 @@ riscv_v_adjust_bytesize (machine_mode mode, int scale)
        return BYTES_PER_RISCV_VECTOR;
 
       poly_int64 nunits = GET_MODE_NUNITS (mode);
-      poly_int64 mode_size = GET_MODE_SIZE (mode);
-
-      if (maybe_eq (mode_size, (uint16_t) -1))
-       mode_size = riscv_vector_chunks * scale;
 
       if (nunits.coeffs[0] > 8)
        return exact_div (nunits, 8);