CRIS: Eliminate a few unneeded moves to/from T0/T1.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4306 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/target-cris/translate.c b/target-cris/translate.c
index 7fdedbf..72e5e3c 100644
--- a/target-cris/translate.c
+++ b/target-cris/translate.c
@@ -449,11 +449,10 @@
tb = dc->tb;
if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
tcg_gen_goto_tb(n);
- tcg_gen_movi_tl(cpu_T[0], dest);
- t_gen_mov_env_TN(pc, cpu_T[0]);
+ tcg_gen_movi_tl(env_pc, dest);
tcg_gen_exit_tb((long)tb + n);
} else {
- t_gen_mov_env_TN(pc, cpu_T[0]);
+ tcg_gen_mov_tl(env_pc, cpu_T[0]);
tcg_gen_exit_tb(0);
}
}
@@ -916,6 +915,8 @@
tcg_gen_ext8s_i32(d, s);
else if (size == 2)
tcg_gen_ext16s_i32(d, s);
+ else
+ tcg_gen_mov_tl(d, s);
}
static inline void t_gen_zext(TCGv d, TCGv s, int size)
@@ -925,6 +926,8 @@
tcg_gen_andi_i32(d, s, 0xff);
else if (size == 2)
tcg_gen_andi_i32(d, s, 0xffff);
+ else
+ tcg_gen_mov_tl(d, s);
}
#if DISAS_CRIS
@@ -968,11 +971,10 @@
static void dec_prep_move_r(DisasContext *dc, int rs, int rd,
int size, int s_ext)
{
- t_gen_mov_TN_reg(cpu_T[1], rs);
if (s_ext)
- t_gen_sext(cpu_T[1], cpu_T[1], size);
+ t_gen_sext(cpu_T[1], cpu_R[rs], size);
else
- t_gen_zext(cpu_T[1], cpu_T[1], size);
+ t_gen_zext(cpu_T[1], cpu_R[rs], size);
}
/* Prepare T0 and T1 for a register alu operation.
@@ -983,11 +985,10 @@
{
dec_prep_move_r(dc, rs, rd, size, s_ext);
- t_gen_mov_TN_reg(cpu_T[0], rd);
if (s_ext)
- t_gen_sext(cpu_T[0], cpu_T[0], size);
+ t_gen_sext(cpu_T[0], cpu_R[rd], size);
else
- t_gen_zext(cpu_T[0], cpu_T[0], size);
+ t_gen_zext(cpu_T[0], cpu_R[rd], size);
}
/* Prepare T0 and T1 for a memory + alu operation.
