From: Richard Henderson <rth@twiddle.net>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, "Emilio G. Cota" <cota@braap.org>
Subject: [Qemu-devel] [PULL 22/26] target/aarch64: optimize indirect branches
Date: Mon, 5 Jun 2017 09:52:29 -0700 [thread overview]
Message-ID: <20170605165233.4135-23-rth@twiddle.net> (raw)
In-Reply-To: <20170605165233.4135-1-rth@twiddle.net>
From: "Emilio G. Cota" <cota@braap.org>
Measurements:
[Baseline performance is that before applying this and the previous commit]
- NBench, aarch64-softmmu. Host: Intel i7-4790K @ 4.00GHz
1.7x +-+--------------------------------------------------------------------------------------------------------------+-+
| |
| cross |
1.6x +cross+jr.................................................####...................................................+-+
| #++# |
| # # |
1.5x +-+...................................................*****..#...................................................+-+
| *+++* # |
| * * # |
1.4x +-+...................................................*...*..#...................................................+-+
| * * # |
| ##### * * # |
1.3x +-+................................****+++#...........*...*..#...................................................+-+
| *++* # * * # |
| * * # * * # |
1.2x +-+................................*..*...#...........*...*..#...................................................+-+
| * * # * * # |
| #### * * # * * # |
1.1x +-+.......................+++#..#..*..*...#...........*...*..#...................................................+-+
| **** # * * # * * # ****#### |
| * * # * * # * * # ****### +++#### ****### * * # |
1x +-++-++++++-++++****###++-*++*++#++*++*+-+#++****+++++*+++*++#++*++*-+#++*****++#++****###-++*++*-+#++*+-*+++#+-++-+
| *****### * * # * * # * * # *++*### * * # * * # * * # * *++# * * # * * # |
| * *++# * * # * * # * * # * * # * * # * * # * * # * * # * * # * * # |
0.9x +-+---*****###--****###---****###--****####--****###--*****###--****###--*****###--****###---****###--****####---+-+
ASSIGNMENT BITFIELD FOURFP EMULATION HUFFMAN LU DECOMPOSITIONNEURAL NUMERIC SORSTRING SORT hmean
png: http://imgur.com/qO9ubtk
NB. cross here represents the previous commit.
- SPECint06 (test set), aarch64-linux-user. Host: Intel i7-4790K @ 4.00GHz
1.5x +-+--------------------------------------------------------------------------------------------------------------+-+
| ***** |
| *+++* jr |
| * * |
1.4x +-+.....................................................................*...*.....................+++............+-+
| * * | |
| ***** * * | |
| * * * * ***** |
1.3x +-+....................................*...*............................*...*....................*.|.*...........+-+
| +++ * * * * * | * |
| ***** * * * * *+++* |
| * * * * * * * * |
1.2x +-+....................*...*...........*...*............................*...*...........*****....*...*...........+-+
| ***** * * * * * * * * * * +++ |
| * * * * * * * * * * * * ***** |
| * * * * ***** * * * * * * * * * * |
1.1x +-+...*...*............*...*...*...*...*...*............................*...*....+++....*...*....*...*...*...*...+-+
| * * * * * * * * * * ***** * * * * * * |
| * * * * * * * * ***** * * * * * * * * * * |
| * * ***** * * * * * * * * ****** * * * * * * * * * * |
1x +-++-+*+++*-++*+++*++++*+-+*+++*-++*+++*-++*+++*+++*++-*++++*-++*****+++*++-*+++*++-*+++*+-+*++++*+++*++-*+++*+-++-+
| * * * * * * * * * * * * * * *+++* * * * * * * * * * * |
| * * * * * * * * * * * * * * * * * * * * * * * * * * |
| * * * * * * * * * * * * * * * * * * * * * * * * * * |
0.9x +-+---*****---*****----*****---*****---*****---*****---******---*****---*****---*****---*****----*****---*****---+-+
astar bzip2 gcc gobmk h264ref hmmlibquantum mcf omnetpperlbench sjengxalancbmk hmean
png: http://imgur.com/3Dp4vvq
- SPECint06 (train set), aarch64-linux-user. Host: Intel i7-4790K @ 4.00GHz
1.7x +-+--------------------------------------------------------------------------------------------------------------+-+
| |
| jr |
1.6x +-+...............................................................................................+++............+-+
| ***** |
| *+++* |
| * * |
1.5x +-+..............................................................................................*...*...........+-+
| +++ * * |
| ***** * * |
1.4x +-+.....................................................................*+++*....................*...*...........+-+
| * * * * |
| ***** * * * * |
| * * * * ***** * * |
1.3x +-+....................................*...*............................*...*...*...*............*...*...........+-+
| +++ * * * * * * * * |
| ***** * * * * * * ***** * * |
1.2x +-+....................*...*...........*...*............................*...*...*...*...*+++*....*...*...*****...+-+
| * * * * * * * * * * * * *+++* |
| ***** * * ***** * * * * * * * * * * * * |
| * * * * *+++* * * * * * * * * * * * * |
1.1x +-+...*...*............*...*...*...*...*...*............................*...*...*...*...*...*....*...*...*...*...+-+
| * * ***** * * * * * * ***** * * * * * * * * * * |
| * * * * * * * * * * +++ ****** *+++* * * * * * * * * * * |
1x +-+---*****---*****----*****---*****---*****---*****---******---*****---*****---*****---*****----*****---*****---+-+
astar bzip2 gcc gobmk h264ref hmmlibquantum mcf omnetpperlbench sjengxalancbmk hmean
png: http://imgur.com/vRrdc9j
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
---
target/arm/translate-a64.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index ab61d96..860e279 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -11367,8 +11367,7 @@ void gen_intermediate_code_a64(ARMCPU *cpu, TranslationBlock *tb)
gen_a64_set_pc_im(dc->pc);
/* fall through */
case DISAS_JUMP:
- /* indicate that the hash table must be used to find the next TB */
- tcg_gen_exit_tb(0);
+ tcg_gen_lookup_and_goto_ptr(cpu_pc);
break;
case DISAS_TB_JUMP:
case DISAS_EXC:
--
2.9.4
next prev parent reply other threads:[~2017-06-05 16:53 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-05 16:52 [Qemu-devel] [PULL 00/26] tcg queued patches Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 01/26] target/nios2: Fix 64-bit ilp32 compilation Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 02/26] tcg/sparc: Use the proper compilation flags for 32-bit Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 03/26] qemu/atomic: Loosen restrictions for 64-bit ILP32 hosts Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 04/26] tcg: Introduce goto_ptr opcode and tcg_gen_lookup_and_goto_ptr Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 05/26] tcg/i386: implement goto_ptr Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 06/26] target/arm: optimize cross-page direct jumps in softmmu Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 07/26] target/arm: optimize indirect branches Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 08/26] target/i386: introduce gen_jr helper to generate lookup_and_goto_ptr Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 09/26] target/i386: optimize cross-page direct jumps in softmmu Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 10/26] target/i386: optimize indirect branches Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 11/26] tb-hash: improve tb_jmp_cache hash function in user mode Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 12/26] tcg/ppc: Implement goto_ptr Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 13/26] tcg/aarch64: " Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 14/26] tcg/sparc: " Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 15/26] tcg/s390: " Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 16/26] tcg/arm: Clarify tcg_out_bx for arm4 host Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 17/26] tcg/arm: Implement goto_ptr Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 19/26] target/s390: Use tcg_gen_lookup_and_goto_ptr Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 20/26] target/hppa: " Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 21/26] target/aarch64: optimize cross-page direct jumps in softmmu Richard Henderson
2017-06-05 16:52 ` Richard Henderson [this message]
2017-06-07 14:11 ` [Qemu-devel] [PULL 22/26] target/aarch64: optimize indirect branches Alex Bennée
2017-06-07 14:22 ` Alex Bennée
2017-06-07 15:19 ` Alex Bennée
2017-06-07 15:52 ` Alex Bennée
2017-06-07 20:22 ` Emilio G. Cota
2017-06-08 10:48 ` Alex Bennée
2017-06-07 20:38 ` Richard Henderson
2017-06-08 8:38 ` Alex Bennée
2017-06-05 16:52 ` [Qemu-devel] [PULL 23/26] target/mips: optimize cross-page direct jumps in softmmu Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 24/26] target/mips: optimize indirect branches Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 25/26] target/alpha: Implement WTINT inline Richard Henderson
2017-06-05 16:52 ` [Qemu-devel] [PULL 26/26] target/alpha: Use goto_tb for fallthru between TBs Richard Henderson
2017-06-06 8:56 ` [Qemu-devel] [PULL 00/26] tcg queued patches Peter Maydell
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