Commit e9203484cba1f15b81e38d0b1be78806d8d66174
1 parent
6958549d
target-mips: optimize some gpr accesses
Optimize gpr accesses when it is known at translation time that gpr != 0. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6307 c046a42c-6fe2-441c-8c8c-71466251a162
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6 additions
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12 deletions
target-mips/translate.c
| @@ -988,9 +988,8 @@ static void gen_ldst (DisasContext *ctx, uint32_t opc, int rt, | @@ -988,9 +988,8 @@ static void gen_ldst (DisasContext *ctx, uint32_t opc, int rt, | ||
| 988 | } else if (offset == 0) { | 988 | } else if (offset == 0) { |
| 989 | gen_load_gpr(t0, base); | 989 | gen_load_gpr(t0, base); |
| 990 | } else { | 990 | } else { |
| 991 | - gen_load_gpr(t0, base); | ||
| 992 | - tcg_gen_movi_tl(t1, offset); | ||
| 993 | - gen_op_addr_add(ctx, t0, t1); | 991 | + tcg_gen_movi_tl(t0, offset); |
| 992 | + gen_op_addr_add(ctx, t0, cpu_gpr[base]); | ||
| 994 | } | 993 | } |
| 995 | /* Don't do NOP if destination is zero: we must perform the actual | 994 | /* Don't do NOP if destination is zero: we must perform the actual |
| 996 | memory access. */ | 995 | memory access. */ |
| @@ -1151,12 +1150,8 @@ static void gen_flt_ldst (DisasContext *ctx, uint32_t opc, int ft, | @@ -1151,12 +1150,8 @@ static void gen_flt_ldst (DisasContext *ctx, uint32_t opc, int ft, | ||
| 1151 | } else if (offset == 0) { | 1150 | } else if (offset == 0) { |
| 1152 | gen_load_gpr(t0, base); | 1151 | gen_load_gpr(t0, base); |
| 1153 | } else { | 1152 | } else { |
| 1154 | - TCGv t1 = tcg_temp_local_new(); | ||
| 1155 | - | ||
| 1156 | - gen_load_gpr(t0, base); | ||
| 1157 | - tcg_gen_movi_tl(t1, offset); | ||
| 1158 | - gen_op_addr_add(ctx, t0, t1); | ||
| 1159 | - tcg_temp_free(t1); | 1153 | + tcg_gen_movi_tl(t0, offset); |
| 1154 | + gen_op_addr_add(ctx, t0, cpu_gpr[base]); | ||
| 1160 | } | 1155 | } |
| 1161 | /* Don't do NOP if destination is zero: we must perform the actual | 1156 | /* Don't do NOP if destination is zero: we must perform the actual |
| 1162 | memory access. */ | 1157 | memory access. */ |
| @@ -7259,9 +7254,8 @@ static void gen_flt3_ldst (DisasContext *ctx, uint32_t opc, | @@ -7259,9 +7254,8 @@ static void gen_flt3_ldst (DisasContext *ctx, uint32_t opc, | ||
| 7259 | } else if (index == 0) { | 7254 | } else if (index == 0) { |
| 7260 | gen_load_gpr(t0, base); | 7255 | gen_load_gpr(t0, base); |
| 7261 | } else { | 7256 | } else { |
| 7262 | - gen_load_gpr(t0, base); | ||
| 7263 | - gen_load_gpr(t1, index); | ||
| 7264 | - gen_op_addr_add(ctx, t0, t1); | 7257 | + gen_load_gpr(t0, index); |
| 7258 | + gen_op_addr_add(ctx, t0, cpu_gpr[base]); | ||
| 7265 | } | 7259 | } |
| 7266 | /* Don't do NOP if destination is zero: we must perform the actual | 7260 | /* Don't do NOP if destination is zero: we must perform the actual |
| 7267 | memory access. */ | 7261 | memory access. */ |