For FMV.W.X that moves the lower 32 bits of an integer register to a floating-point register, Rd should encoded with NoN-boxing scheme. Note: This applies to RV64 only.
Signed-off-by: Ian Jiang <ianjiang....@gmail.com> --- target/riscv/insn_trans/trans_rvf.inc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/target/riscv/insn_trans/trans_rvf.inc.c b/target/riscv/insn_trans/trans_rvf.inc.c index 172dbfa919..62b7a36567 100644 --- a/target/riscv/insn_trans/trans_rvf.inc.c +++ b/target/riscv/insn_trans/trans_rvf.inc.c @@ -368,6 +368,7 @@ static bool trans_fmv_w_x(DisasContext *ctx, arg_fmv_w_x *a) #if defined(TARGET_RISCV64) tcg_gen_mov_i64(cpu_fpr[a->rd], t0); + tcg_gen_ori_i64(cpu_fpr[a->rd], cpu_fpr[a->rd], 0xffffffff00000000ULL); #else tcg_gen_extu_i32_i64(cpu_fpr[a->rd], t0); #endif -- 2.17.1