target/aarch64: optimize indirect branches
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>
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@ -11367,8 +11367,7 @@ void gen_intermediate_code_a64(ARMCPU *cpu, TranslationBlock *tb)
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gen_a64_set_pc_im(dc->pc);
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gen_a64_set_pc_im(dc->pc);
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/* fall through */
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/* fall through */
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case DISAS_JUMP:
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case DISAS_JUMP:
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/* indicate that the hash table must be used to find the next TB */
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tcg_gen_lookup_and_goto_ptr(cpu_pc);
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tcg_gen_exit_tb(0);
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break;
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break;
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case DISAS_TB_JUMP:
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case DISAS_TB_JUMP:
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case DISAS_EXC:
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case DISAS_EXC:
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