Properly handle move from the zero register.
Signed-off-by: Richard Henderson <[email protected]>
---
target-alpha/translate.c | 10 +++++++---
1 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/target-alpha/translate.c b/target-alpha/translate.c
index d361ffe..3773ab4 100644
--- a/target-alpha/translate.c
+++ b/target-alpha/translate.c
@@ -1834,12 +1834,16 @@ static inline int translate_one(DisasContext *ctx, uint32_t insn)
break;
case 0x020:
if (likely(rc != 31)) {
- if (ra == rb)
+ if (ra == rb) {
/* FMOV */
- tcg_gen_mov_i64(cpu_fir[rc], cpu_fir[ra]);
- else
+ if (ra == 31)
+ tcg_gen_movi_i64(cpu_fir[rc], 0);
+ else
+ tcg_gen_mov_i64(cpu_fir[rc], cpu_fir[ra]);
+ } else {
/* CPYS */
gen_fcpys(ra, rb, rc);
+ }
}
break;
case 0x021:
