I've been testing target mips on the tcg-search-2 branch -- I haven't spotted any obvious regressions and performance gain was visible in some of my tests. On qemu-system-mips64el the Linux kernel build time went down from 465m to 305m. And in a virtual memory torture test I can see slightly above x2 speedup. Nice improvement.
Regards, Leon On 18/09/15 05:55, Richard Henderson wrote: > Version 2, updated based on comments. Notable changes: > > (1) Move breakpoint recognition after insn_start. Now we really > do never have zero insns per TB. Assertions added. > (2) Comments added. > (3) Minor tweeks to the encoding, reflected in the comments. > > I examined a handfull of test cases, and compiled some sizes: > > AVG DATA/TB CODE+DATA EXPAND > aarch64-test 15.6 17.7 > arm-test 15.9 18.6 > sparc-test 18.9 13.6 > ppc-test 11.4 14.8 > mb-test 12.3 13.5 > coldfire-test 10.8 25.0 > s390 moonbuggy 16.0 17.7 > > alpha 12.6 12.7 > mips64 31.6 14.8 > ppc64 13.5 16.6 > > Not surprising that mips is larger, since it requests 3 words > of ancilliary data, more than anyone else. With less than 20 > bytes per TB on average, I'm not sure that anything else is > required wrt compression. > > > r~ > > > Richard Henderson (22): > tcg: Rename debug_insn_start to insn_start > target-*: Unconditionally emit tcg_gen_insn_start > target-*: Increment num_insns immediately after tcg_gen_insn_start > target-*: Introduce and use cpu_breakpoint_test > tcg: Allow extra data to be attached to insn_start > target-arm: Add condexec state to insn_start > target-i386: Add cc_op state to insn_start > target-mips: Add delayed branch state to insn_start > target-s390x: Add cc_op state to insn_start > target-sh4: Add flags state to insn_start > target-cris: Mirror gen_opc_pc into insn_start > target-sparc: Tidy gen_branch_a interface > target-sparc: Split out gen_branch_n > target-sparc: Remove gen_opc_jump_pc > target-sparc: Add npc state to insn_start > tcg: Merge cpu_gen_code into tb_gen_code > target-*: Drop cpu_gen_code define > tcg: Add TCG_MAX_INSNS > tcg: Pass data argument to restore_state_to_opc > tcg: Save insn data and use it in cpu_restore_state_from_tb > tcg: Remove gen_intermediate_code_pc > tcg: Remove tcg_gen_code_search_pc > > include/exec/exec-all.h | 6 +- > include/qom/cpu.h | 16 +++ > target-alpha/cpu.h | 1 - > target-alpha/translate.c | 70 +++--------- > target-arm/cpu.h | 2 +- > target-arm/translate-a64.c | 62 +++------- > target-arm/translate.c | 98 +++++----------- > target-arm/translate.h | 8 +- > target-cris/cpu.h | 1 - > target-cris/translate.c | 93 ++++----------- > target-cris/translate_v10.c | 3 - > target-i386/cpu.h | 2 +- > target-i386/translate.c | 106 +++++------------ > target-lm32/cpu.h | 1 - > target-lm32/translate.c | 83 ++++---------- > target-m68k/cpu.h | 1 - > target-m68k/translate.c | 82 ++++---------- > target-microblaze/cpu.h | 1 - > target-microblaze/translate.c | 83 ++++---------- > target-mips/cpu.h | 2 +- > target-mips/translate.c | 98 +++++----------- > target-moxie/cpu.h | 1 - > target-moxie/translate.c | 82 +++++--------- > target-openrisc/cpu.h | 1 - > target-openrisc/translate.c | 78 +++---------- > target-ppc/cpu.h | 1 - > target-ppc/translate.c | 72 ++++-------- > target-s390x/cpu.h | 2 +- > target-s390x/translate.c | 78 ++++--------- > target-sh4/cpu.h | 2 +- > target-sh4/translate.c | 91 +++++---------- > target-sparc/cpu.h | 2 +- > target-sparc/translate.c | 185 +++++++++++++----------------- > target-tilegx/translate.c | 58 +++------- > target-tricore/translate.c | 59 ++++------ > target-unicore32/translate.c | 83 ++++---------- > target-xtensa/cpu.h | 1 - > target-xtensa/translate.c | 79 ++++--------- > tcg/tcg-op.h | 52 +++++++-- > tcg/tcg-opc.h | 4 +- > tcg/tcg.c | 127 +++++++++++---------- > tcg/tcg.h | 16 ++- > tci.c | 9 -- > translate-all.c | 258 > ++++++++++++++++++++++++++---------------- > 44 files changed, 782 insertions(+), 1378 deletions(-) >
