Since TCG_TYPE_I32 values are kept sign-extended in registers, via "w"
instructions, we don't need to extend if the register matches.
This is already relied upon by comparisons.
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
static void tcg_out_exts_i32_i64(TCGContext *s, TCGReg ret, TCGReg arg)
{
- tcg_out_ext32s(s, ret, arg);
+ if (ret != arg) {
+ tcg_out_ext32s(s, ret, arg);
+ }
}
static void tcg_out_extu_i32_i64(TCGContext *s, TCGReg ret, TCGReg arg)