diff options
author | Aurelien Jarno <aurelien@aurel32.net> | 2010-01-31 01:07:25 +0100 |
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committer | Aurelien Jarno <aurelien@aurel32.net> | 2010-02-08 12:21:22 +0100 |
commit | 3101e99c21270b984870ed2d9b390196bac98e2b (patch) | |
tree | e9e8f499eafdd161a65049f097d0a95c8a94e815 /target-sh4/translate.c | |
parent | 37cc0b44b48fcb9f8d75105202d45e70ad1774ca (diff) |
target-sh4: minor optimisations
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-sh4/translate.c')
-rw-r--r-- | target-sh4/translate.c | 52 |
1 files changed, 26 insertions, 26 deletions
diff --git a/target-sh4/translate.c b/target-sh4/translate.c index 895b978d38..8f0a986c48 100644 --- a/target-sh4/translate.c +++ b/target-sh4/translate.c @@ -664,7 +664,7 @@ static void _decode_opc(DisasContext * ctx) TCGv addr = tcg_temp_new(); tcg_gen_subi_i32(addr, REG(B11_8), 1); tcg_gen_qemu_st8(REG(B7_4), addr, ctx->memidx); /* might cause re-execution */ - tcg_gen_subi_i32(REG(B11_8), REG(B11_8), 1); /* modify register status */ + tcg_gen_mov_i32(REG(B11_8), addr); /* modify register status */ tcg_temp_free(addr); } return; @@ -673,7 +673,7 @@ static void _decode_opc(DisasContext * ctx) TCGv addr = tcg_temp_new(); tcg_gen_subi_i32(addr, REG(B11_8), 2); tcg_gen_qemu_st16(REG(B7_4), addr, ctx->memidx); - tcg_gen_subi_i32(REG(B11_8), REG(B11_8), 2); + tcg_gen_mov_i32(REG(B11_8), addr); tcg_temp_free(addr); } return; @@ -682,7 +682,7 @@ static void _decode_opc(DisasContext * ctx) TCGv addr = tcg_temp_new(); tcg_gen_subi_i32(addr, REG(B11_8), 4); tcg_gen_qemu_st32(REG(B7_4), addr, ctx->memidx); - tcg_gen_subi_i32(REG(B11_8), REG(B11_8), 4); + tcg_gen_mov_i32(REG(B11_8), addr); } return; case 0x6004: /* mov.b @Rm+,Rn */ @@ -750,17 +750,13 @@ static void _decode_opc(DisasContext * ctx) return; case 0x6008: /* swap.b Rm,Rn */ { - TCGv highw, high, low; - highw = tcg_temp_new(); - tcg_gen_andi_i32(highw, REG(B7_4), 0xffff0000); + TCGv high, low; high = tcg_temp_new(); - tcg_gen_ext8u_i32(high, REG(B7_4)); - tcg_gen_shli_i32(high, high, 8); + tcg_gen_andi_i32(high, REG(B7_4), 0xffff0000); low = tcg_temp_new(); - tcg_gen_shri_i32(low, REG(B7_4), 8); - tcg_gen_ext8u_i32(low, low); + tcg_gen_ext16u_i32(low, REG(B7_4)); + tcg_gen_bswap16_i32(low, low); tcg_gen_or_i32(REG(B11_8), high, low); - tcg_gen_or_i32(REG(B11_8), REG(B11_8), highw); tcg_temp_free(low); tcg_temp_free(high); } @@ -769,8 +765,7 @@ static void _decode_opc(DisasContext * ctx) { TCGv high, low; high = tcg_temp_new(); - tcg_gen_ext16u_i32(high, REG(B7_4)); - tcg_gen_shli_i32(high, high, 16); + tcg_gen_shli_i32(high, REG(B7_4), 16); low = tcg_temp_new(); tcg_gen_shri_i32(low, REG(B7_4), 16); tcg_gen_ext16u_i32(low, low); @@ -783,8 +778,7 @@ static void _decode_opc(DisasContext * ctx) { TCGv high, low; high = tcg_temp_new(); - tcg_gen_ext16u_i32(high, REG(B7_4)); - tcg_gen_shli_i32(high, high, 16); + tcg_gen_shli_i32(high, REG(B7_4), 16); low = tcg_temp_new(); tcg_gen_shri_i32(low, REG(B11_8), 16); tcg_gen_ext16u_i32(low, low); @@ -974,20 +968,24 @@ static void _decode_opc(DisasContext * ctx) int label2 = gen_new_label(); int label3 = gen_new_label(); int label4 = gen_new_label(); - TCGv shift = tcg_temp_local_new(); + TCGv shift; tcg_gen_brcondi_i32(TCG_COND_LT, REG(B7_4), 0, label1); /* Rm positive, shift to the left */ + shift = tcg_temp_new(); tcg_gen_andi_i32(shift, REG(B7_4), 0x1f); tcg_gen_shl_i32(REG(B11_8), REG(B11_8), shift); + tcg_temp_free(shift); tcg_gen_br(label4); /* Rm negative, shift to the right */ gen_set_label(label1); + shift = tcg_temp_new(); tcg_gen_andi_i32(shift, REG(B7_4), 0x1f); tcg_gen_brcondi_i32(TCG_COND_EQ, shift, 0, label2); tcg_gen_not_i32(shift, REG(B7_4)); tcg_gen_andi_i32(shift, shift, 0x1f); tcg_gen_addi_i32(shift, shift, 1); tcg_gen_sar_i32(REG(B11_8), REG(B11_8), shift); + tcg_temp_free(shift); tcg_gen_br(label4); /* Rm = -32 */ gen_set_label(label2); @@ -997,7 +995,6 @@ static void _decode_opc(DisasContext * ctx) gen_set_label(label3); tcg_gen_movi_i32(REG(B11_8), 0xffffffff); gen_set_label(label4); - tcg_temp_free(shift); } return; case 0x400d: /* shld Rm,Rn */ @@ -1005,26 +1002,29 @@ static void _decode_opc(DisasContext * ctx) int label1 = gen_new_label(); int label2 = gen_new_label(); int label3 = gen_new_label(); - TCGv shift = tcg_temp_local_new(); + TCGv shift; tcg_gen_brcondi_i32(TCG_COND_LT, REG(B7_4), 0, label1); /* Rm positive, shift to the left */ + shift = tcg_temp_new(); tcg_gen_andi_i32(shift, REG(B7_4), 0x1f); tcg_gen_shl_i32(REG(B11_8), REG(B11_8), shift); + tcg_temp_free(shift); tcg_gen_br(label3); /* Rm negative, shift to the right */ gen_set_label(label1); + shift = tcg_temp_new(); tcg_gen_andi_i32(shift, REG(B7_4), 0x1f); tcg_gen_brcondi_i32(TCG_COND_EQ, shift, 0, label2); tcg_gen_not_i32(shift, REG(B7_4)); tcg_gen_andi_i32(shift, shift, 0x1f); tcg_gen_addi_i32(shift, shift, 1); tcg_gen_shr_i32(REG(B11_8), REG(B11_8), shift); + tcg_temp_free(shift); tcg_gen_br(label3); /* Rm = -32 */ gen_set_label(label2); tcg_gen_movi_i32(REG(B11_8), 0); gen_set_label(label3); - tcg_temp_free(shift); } return; case 0x3008: /* sub Rm,Rn */ @@ -1106,7 +1106,7 @@ static void _decode_opc(DisasContext * ctx) int fr = XREG(B7_4); tcg_gen_subi_i32(addr, REG(B11_8), 4); tcg_gen_qemu_st32(cpu_fregs[fr+1], addr, ctx->memidx); - tcg_gen_subi_i32(addr, REG(B11_8), 8); + tcg_gen_subi_i32(addr, addr, 4); tcg_gen_qemu_st32(cpu_fregs[fr ], addr, ctx->memidx); tcg_gen_mov_i32(REG(B11_8), addr); tcg_temp_free(addr); @@ -1115,8 +1115,8 @@ static void _decode_opc(DisasContext * ctx) addr = tcg_temp_new_i32(); tcg_gen_subi_i32(addr, REG(B11_8), 4); tcg_gen_qemu_st32(cpu_fregs[FREG(B7_4)], addr, ctx->memidx); + tcg_gen_mov_i32(REG(B11_8), addr); tcg_temp_free(addr); - tcg_gen_subi_i32(REG(B11_8), REG(B11_8), 4); } return; case 0xf006: /* fmov @(R0,Rm),{F,D,X}Rm - FPSCR: Nothing */ @@ -1436,8 +1436,8 @@ static void _decode_opc(DisasContext * ctx) TCGv addr = tcg_temp_new(); tcg_gen_subi_i32(addr, REG(B11_8), 4); tcg_gen_qemu_st32(ALTREG(B6_4), addr, ctx->memidx); + tcg_gen_mov_i32(REG(B11_8), addr); tcg_temp_free(addr); - tcg_gen_subi_i32(REG(B11_8), REG(B11_8), 4); } return; } @@ -1505,8 +1505,8 @@ static void _decode_opc(DisasContext * ctx) TCGv addr = tcg_temp_new(); tcg_gen_subi_i32(addr, REG(B11_8), 4); tcg_gen_qemu_st32(cpu_sr, addr, ctx->memidx); + tcg_gen_mov_i32(REG(B11_8), addr); tcg_temp_free(addr); - tcg_gen_subi_i32(REG(B11_8), REG(B11_8), 4); } return; #define LDST(reg,ldnum,ldpnum,stnum,stpnum,prechk) \ @@ -1526,11 +1526,11 @@ static void _decode_opc(DisasContext * ctx) case stpnum: \ prechk \ { \ - TCGv addr = tcg_temp_new(); \ + TCGv addr = tcg_temp_new(); \ tcg_gen_subi_i32(addr, REG(B11_8), 4); \ tcg_gen_qemu_st32 (cpu_##reg, addr, ctx->memidx); \ + tcg_gen_mov_i32(REG(B11_8), addr); \ tcg_temp_free(addr); \ - tcg_gen_subi_i32(REG(B11_8), REG(B11_8), 4); \ } \ return; LDST(gbr, 0x401e, 0x4017, 0x0012, 0x4013, {}) @@ -1571,9 +1571,9 @@ static void _decode_opc(DisasContext * ctx) addr = tcg_temp_new(); tcg_gen_subi_i32(addr, REG(B11_8), 4); tcg_gen_qemu_st32(val, addr, ctx->memidx); + tcg_gen_mov_i32(REG(B11_8), addr); tcg_temp_free(addr); tcg_temp_free(val); - tcg_gen_subi_i32(REG(B11_8), REG(B11_8), 4); } return; case 0x00c3: /* movca.l R0,@Rm */ |