qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[PULL 12/14] target/openrisc: Use dc->zero in gen_add, gen_addc


From: Richard Henderson
Subject: [PULL 12/14] target/openrisc: Use dc->zero in gen_add, gen_addc
Date: Tue, 13 Jul 2021 09:42:09 -0700

We still need the t0 temporary for computing overflow,
but we do not need to initialize it to zero first.

Reviewed-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/openrisc/translate.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/target/openrisc/translate.c b/target/openrisc/translate.c
index 6aba4c2ffc..059da48475 100644
--- a/target/openrisc/translate.c
+++ b/target/openrisc/translate.c
@@ -199,10 +199,10 @@ static void gen_ove_cyov(DisasContext *dc)
 
 static void gen_add(DisasContext *dc, TCGv dest, TCGv srca, TCGv srcb)
 {
-    TCGv t0 = tcg_const_tl(0);
+    TCGv t0 = tcg_temp_new();
     TCGv res = tcg_temp_new();
 
-    tcg_gen_add2_tl(res, cpu_sr_cy, srca, t0, srcb, t0);
+    tcg_gen_add2_tl(res, cpu_sr_cy, srca, dc->zero, srcb, dc->zero);
     tcg_gen_xor_tl(cpu_sr_ov, srca, srcb);
     tcg_gen_xor_tl(t0, res, srcb);
     tcg_gen_andc_tl(cpu_sr_ov, t0, cpu_sr_ov);
@@ -216,11 +216,11 @@ static void gen_add(DisasContext *dc, TCGv dest, TCGv 
srca, TCGv srcb)
 
 static void gen_addc(DisasContext *dc, TCGv dest, TCGv srca, TCGv srcb)
 {
-    TCGv t0 = tcg_const_tl(0);
+    TCGv t0 = tcg_temp_new();
     TCGv res = tcg_temp_new();
 
-    tcg_gen_add2_tl(res, cpu_sr_cy, srca, t0, cpu_sr_cy, t0);
-    tcg_gen_add2_tl(res, cpu_sr_cy, res, cpu_sr_cy, srcb, t0);
+    tcg_gen_add2_tl(res, cpu_sr_cy, srca, dc->zero, cpu_sr_cy, dc->zero);
+    tcg_gen_add2_tl(res, cpu_sr_cy, res, cpu_sr_cy, srcb, dc->zero);
     tcg_gen_xor_tl(cpu_sr_ov, srca, srcb);
     tcg_gen_xor_tl(t0, res, srcb);
     tcg_gen_andc_tl(cpu_sr_ov, t0, cpu_sr_ov);
-- 
2.25.1




reply via email to

[Prev in Thread] Current Thread [Next in Thread]