target/mips: Use gen_load_gpr[_hi]() when possible

target/mips: Use gen_load_gpr[_hi]() when possible

Use gen_load_gpr[_hi]() instead of open coding it.

Patch generated using the following spatch script:

  @gen_load_gpr@
  identifier reg_idx;
  expression tcg_reg;
  @@
  -if (reg_idx == 0) {
  -    tcg_gen_movi_tl(tcg_reg, 0);
  -} else {
  -    tcg_gen_mov_tl(tcg_reg, cpu_gpr[reg_idx]);
  -}
  +gen_load_gpr(tcg_reg, reg_idx);

  @gen_load_gpr_hi@
  identifier reg_idx;
  expression tcg_reg;
  @@
  -if (reg_idx == 0) {
  -    tcg_gen_movi_i64(tcg_reg, 0);
  -} else {
  -    tcg_gen_mov_i64(tcg_reg, cpu_gpr_hi[reg_idx]);
  -}
  +gen_load_gpr_hi(tcg_reg, reg_idx);

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210308131604.460693-1-f4bug@amsat.org>