aboutsummaryrefslogtreecommitdiff
path: root/target-mips/translate.c
diff options
context:
space:
mode:
authoraurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162>2009-03-29 15:44:50 +0000
committeraurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162>2009-03-29 15:44:50 +0000
commitaf58f9ca434064ef6193bb7aab0ea6faea5167c0 (patch)
tree6ad62dfa5ecdbe4402cec2fb039c724cfd44efc9 /target-mips/translate.c
parentd94536f417cd472ccf7dda4603e0cbee4f892ed2 (diff)
target-mips: optimize gen_movci()
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6956 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-mips/translate.c')
-rw-r--r--target-mips/translate.c32
1 files changed, 17 insertions, 15 deletions
diff --git a/target-mips/translate.c b/target-mips/translate.c
index ea90776694..599e458c06 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -5693,29 +5693,31 @@ static void gen_cp1 (DisasContext *ctx, uint32_t opc, int rt, int fs)
static void gen_movci (DisasContext *ctx, int rd, int rs, int cc, int tf)
{
- int l1 = gen_new_label();
- uint32_t ccbit;
+ int l1;
TCGCond cond;
- TCGv t0 = tcg_temp_local_new();
- TCGv_i32 r_tmp = tcg_temp_new_i32();
+ TCGv_i32 t0;
+
+ if (rd == 0) {
+ /* Treat as NOP. */
+ return;
+ }
- if (cc)
- ccbit = 1 << (24 + cc);
- else
- ccbit = 1 << 23;
if (tf)
cond = TCG_COND_EQ;
else
cond = TCG_COND_NE;
- gen_load_gpr(t0, rd);
- tcg_gen_andi_i32(r_tmp, fpu_fcr31, ccbit);
- tcg_gen_brcondi_i32(cond, r_tmp, 0, l1);
- tcg_temp_free_i32(r_tmp);
- gen_load_gpr(t0, rs);
+ l1 = gen_new_label();
+ t0 = tcg_temp_new_i32();
+ tcg_gen_andi_i32(t0, fpu_fcr31, get_fp_bit(cc));
+ tcg_gen_brcondi_i32(cond, t0, 0, l1);
+ if (rs == 0) {
+ tcg_gen_movi_tl(cpu_gpr[rd], 0);
+ } else {
+ tcg_gen_mov_tl(cpu_gpr[rd], cpu_gpr[rs]);
+ }
gen_set_label(l1);
- gen_store_gpr(t0, rd);
- tcg_temp_free(t0);
+ tcg_temp_free_i32(t0);
}
static inline void gen_movcf_s (int fs, int fd, int cc, int tf)