From: Aurelien Jarno <aurelien@aurel32.net>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [6956] target-mips: optimize gen_movci()
Date: Sun, 29 Mar 2009 15:44:50 +0000 [thread overview]
Message-ID: <E1LnxBq-0006eo-BQ@cvs.savannah.gnu.org> (raw)
Revision: 6956
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6956
Author: aurel32
Date: 2009-03-29 15:44:50 +0000 (Sun, 29 Mar 2009)
Log Message:
-----------
target-mips: optimize gen_movci()
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Modified Paths:
--------------
trunk/target-mips/translate.c
Modified: trunk/target-mips/translate.c
===================================================================
--- trunk/target-mips/translate.c 2009-03-29 15:44:34 UTC (rev 6955)
+++ trunk/target-mips/translate.c 2009-03-29 15:44:50 UTC (rev 6956)
@@ -5693,29 +5693,31 @@
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 (cc)
- ccbit = 1 << (24 + cc);
- else
- ccbit = 1 << 23;
+ if (rd == 0) {
+ /* Treat as NOP. */
+ return;
+ }
+
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)
reply other threads:[~2009-03-29 15:44 UTC|newest]
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