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2019-04-24tcg/arm: Support INDEX_op_extract2_i32Richard Henderson2-1/+26
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-04-24tcg/i386: Support INDEX_op_extract2_{i32,i64}Richard Henderson2-2/+13
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-04-24tcg: Use extract2 in tcg_gen_deposit_{i32,i64}Richard Henderson1-4/+30
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-04-24tcg: Use deposit and extract2 in tcg_gen_shifti_i64Richard Henderson1-21/+22
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-04-24tcg: Add INDEX_op_extract2_{i32,i64}Richard Henderson15-0/+51
This will let backends implement the double-word shift operation. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-04-24tcg: Implement tcg_gen_extract2_{i32,i64}David Hildenbrand2-0/+50
Will be helpful for s390x. Input 128 bit and output 64 bit only, which is sufficient for now. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20190225154204.26751-1-david@redhat.com> [rth: Add matching tcg_gen_extract2_i32.] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-04-18tcg: Simplify how dump_exec_info() printsMarkus Armbruster2-21/+22
dump_exec_info() takes an fprintf()-like callback and a FILE * to pass to it. Its only caller hmp_info_jit() passes monitor_fprintf() and the current monitor cast to FILE *. monitor_fprintf() casts it right back, and is otherwise identical to monitor_printf(). The type-punning is ugly. Drop the callback, and call qemu_printf() instead. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190417191805.28198-5-armbru@redhat.com>
2019-04-18tcg: Simplify how dump_opcount_info() printsMarkus Armbruster2-5/+6
dump_opcount_info() takes an fprintf()-like callback and a FILE * to pass to it. Its only caller hmp_info_opcount() passes monitor_fprintf() and the current monitor cast to FILE *. monitor_fprintf() casts it right back, and is otherwise identical to monitor_printf(). The type-punning is ugly. Drop the callback, and call qemu_printf() instead. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190417191805.28198-4-armbru@redhat.com>
2019-02-21tcg: Remove TODO fileRichard Henderson1-14/+0
The last update to this file was 9 years ago. In the meantime, 4 of the 6 ideas have actually been completed. The lat two do not actually make sense anymore. Suggested-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-02-11tcg/i386: fix unsigned vector saturating arithmeticMark Cave-Ayland1-2/+2
Due to a cut/paste error in the original implementation, the unsigned vector saturating arithmetic was erroneously being calculated as signed vector saturating arithmetic. Fixes: 8ffafbcec2 ("tcg/i386: Implement vector saturating arithmetic") Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Message-Id: <20190207224258.426-1-mark.cave-ayland@ilande.co.uk> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-02-11tcg: Diagnose referenced labels that have not been emittedRichard Henderson3-3/+33
Currently, a jump to a label that is not defined anywhere will be emitted not be relocated. This results in a jump to a random jump target. With tcg debugging, print a diagnostic to the -d op file and abort. This could help debug or detect errors like c2d9644e6d ("target/arm: Fix crash on conditional instruction in an IT block") Reported-by: Roman Kapl <code@rkapl.cz> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-30tcg: Fix LGPL version numberThomas Huth4-4/+4
It's either "GNU *Library* General Public version 2" or "GNU Lesser General Public version *2.1*", but there was no "version 2.0" of the "Lesser" library. So assume that version 2.1 is meant here. Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <1548252536-6242-5-git-send-email-thuth@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-01-28cputlb: Remove static tlb sizingRichard Henderson9-9/+0
Now that all tcg backends support TCG_TARGET_IMPLEMENTS_DYN_TLB, remove the define and the old code. Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/tci: enable dynamic TLB sizingRichard Henderson1-1/+1
This is automatic due to TCI using the other softtlb macros. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/mips: enable dynamic TLB sizingRichard Henderson2-32/+64
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/mips: Fix tcg_out_qemu_ld_slow_pathRichard Henderson1-1/+2
Patch the branch after it has been emitted rather than before it exists. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/arm: enable dynamic TLB sizingRichard Henderson2-71/+70
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/riscv: enable dynamic TLB sizingRichard Henderson2-71/+55
Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/s390: enable dynamic TLB sizingRichard Henderson2-27/+20
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/sparc: enable dynamic TLB sizingRichard Henderson2-33/+51
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/ppc: enable dynamic TLB sizingRichard Henderson2-44/+55
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/aarch64: enable dynamic TLB sizingRichard Henderson2-42/+60
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Tested-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/i386: enable dynamic TLB sizingEmilio G. Cota2-15/+15
As the following experiments show, this series is a net perf gain, particularly for memory-heavy workloads. Experiments are run on an Intel(R) Xeon(R) Gold 6142 CPU @ 2.60GHz. 1. System boot + shudown, debian aarch64: - Before (v3.1.0): Performance counter stats for './die.sh v3.1.0' (10 runs): 9019.797015 task-clock (msec) # 0.993 CPUs utilized ( +- 0.23% ) 29,910,312,379 cycles # 3.316 GHz ( +- 0.14% ) 54,699,252,014 instructions # 1.83 insn per cycle ( +- 0.08% ) 10,061,951,686 branches # 1115.541 M/sec ( +- 0.08% ) 172,966,530 branch-misses # 1.72% of all branches ( +- 0.07% ) 9.084039051 seconds time elapsed ( +- 0.23% ) - After: Performance counter stats for './die.sh tlb-dyn-v5' (10 runs): 8624.084842 task-clock (msec) # 0.993 CPUs utilized ( +- 0.23% ) 28,556,123,404 cycles # 3.311 GHz ( +- 0.13% ) 51,755,089,512 instructions # 1.81 insn per cycle ( +- 0.05% ) 9,526,513,946 branches # 1104.641 M/sec ( +- 0.05% ) 166,578,509 branch-misses # 1.75% of all branches ( +- 0.19% ) 8.680540350 seconds time elapsed ( +- 0.24% ) That is, a 4.4% perf increase. 2. System boot + shutdown, ubuntu 18.04 x86_64: - Before (v3.1.0): 56100.574751 task-clock (msec) # 1.016 CPUs utilized ( +- 4.81% ) 200,745,466,128 cycles # 3.578 GHz ( +- 5.24% ) 431,949,100,608 instructions # 2.15 insn per cycle ( +- 5.65% ) 77,502,383,330 branches # 1381.490 M/sec ( +- 6.18% ) 844,681,191 branch-misses # 1.09% of all branches ( +- 3.82% ) 55.221556378 seconds time elapsed ( +- 5.01% ) - After: 56603.419540 task-clock (msec) # 1.019 CPUs utilized ( +- 10.19% ) 202,217,930,479 cycles # 3.573 GHz ( +- 10.69% ) 439,336,291,626 instructions # 2.17 insn per cycle ( +- 14.14% ) 80,538,357,447 branches # 1422.853 M/sec ( +- 16.09% ) 776,321,622 branch-misses # 0.96% of all branches ( +- 3.77% ) 55.549661409 seconds time elapsed ( +- 10.44% ) No improvement (within noise range). Note that for this workload, increasing the time window too much can lead to perf degradation, since it flushes the TLB *very* frequently. 3. x86_64 SPEC06int: x86_64-softmmu speedup vs. v3.1.0 for SPEC06int (test set) Host: Intel(R) Xeon(R) Gold 6142 CPU @ 2.60GHz (Skylake) 5.5 +------------------------------------------------------------------------+ | +-+ | 5 |-+.................+-+...............................tlb-dyn-v5.......+-| | * * | 4.5 |-+.................*.*................................................+-| | * * | 4 |-+.................*.*................................................+-| | * * | 3.5 |-+.................*.*................................................+-| | * * | 3 |-+......+-+*.......*.*................................................+-| | * * * * | 2.5 |-+......*..*.......*.*.................................+-+*...........+-| | * * * * * * | 2 |-+......*..*.......*.*.................................*..*...........+-| | * * * * * * +-+ | 1.5 |-+......*..*.......*.*.................................*..*.*+-+.*+-+.+-| | * * *+-+ * * +-+ *+-+ +-+ +-+ * * * * * * | 1 |++++-+*+*++*+*++*++*+*++*+*+++-+*+*+-++*+-++++-++++-+++*++*+*++*+*++*+++| | * * * * * * * * * * * * * * * * * * * * * * * * * * | 0.5 +------------------------------------------------------------------------+ 400.perlb401.bzip403.g429445.g456.hm462.libq464.h471.omn47483.xalancbgeomean png: https://imgur.com/YRF90f7 That is, a 1.51x average speedup over the baseline, with a max speedup of 5.17x. Here's a different look at the SPEC06int results, using KVM as the baseline: x86_64-softmmu slowdown vs. KVM for SPEC06int (test set) Host: Intel(R) Xeon(R) Gold 6142 CPU @ 2.60GHz (Skylake) 25 +---------------------------------------------------------------------------+ | +-+ +-+ | | * * +-+ v3.1.0 | | * * +-+ tlb-dyn-v5 | | * * * * +-+ | 20 |-+.................*.*.............................*.+-+......*.*........+-| | * * * # # * * | | +-+ * * * # # * * | | * * * * * # # * * | 15 |-+......*.*........*.*.............................*.#.#......*.+-+......+-| | * * * * * # # * #|# | | * * * * +-+ * # # * +-+ | | * * +-+ * * ++-+ +-+ * # # * # # +-+ | | * * +-+ * * * ## *| +-+ * # # * # # +-+ | 10 |-+......*.*..*.+-+.*.*........*.##.......++-+.*.+-+*.#.#......*.#.#.*.*..+-| | * * * +-+ * * * ## +-+ *# # * # #* # # +-+ * # # * * | | * * * # # * * +-+ * ## * +-+ *# # * # #* # # * * * # # *+-+ | | * * * # # * * * +-+ * ## * # # *# # * # #* # # * * * # # * ## | 5 |-+......*.+-+*.#.#.*.*..*.#.#.*.##.*.#.#.*#.#.*.#.#*.#.#.*.*..*.#.#.*.##.+-| | * # #* # # * +-+* # # * ## * # # *# # * # #* # # * * * # # * ## | | * # #* # # * # #* # # * ## * # # *# # * # #* # # * +-+* # # * ## | | ++-+ * # #* # # * # #* # # * ## * # # *# # * # #* # # * # #* # # * ## | |+++*#+#+*+#+#*+#+#+*+#+#*+#+#+*+##+*+#+#+*#+#+*+#+#*+#+#+*+#+#*+#+#+*+##+++| 0 +---------------------------------------------------------------------------+ 400.perlbe401.bzi403.gc429445.go456.h462.libqu464.h471.omne4483.xalancbmgeomean png: https://imgur.com/YzAMNEV After this series, we bring down the average SPEC06int slowdown vs KVM from 11.47x to 7.58x. Tested-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Emilio G. Cota <cota@braap.org> Message-Id: <20190116170114.26802-4-cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg: introduce dynamic TLB sizingEmilio G. Cota9-0/+9
Disabled in all TCG backends for now. Tested-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Emilio G. Cota <cota@braap.org> Message-Id: <20190116170114.26802-3-cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/aarch64: Implement vector minmax arithmeticRichard Henderson2-1/+25
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/aarch64: Implement vector saturating arithmeticRichard Henderson2-1/+25
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/i386: Implement vector minmax arithmeticRichard Henderson2-1/+82
The avx instruction set does not directly provide MO_64. We can still implement 64-bit with comparison and vpblendvb. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/i386: Implement vector saturating arithmeticRichard Henderson2-1/+43
Only MO_8 and MO_16 are implemented, since that's all the instruction set provides. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/i386: Split subroutines out of tcg_expand_vec_opRichard Henderson1-219/+224
This routine was becoming too large. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg: Add opcodes for vector minmax arithmeticRichard Henderson10-0/+164
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg: Add opcodes for vector saturated arithmeticRichard Henderson9-24/+119
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg: Add write_aofs to GVecGen4Richard Henderson2-8/+21
This allows writing 2 output, 3 input operations. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg: Add gvec expanders for nand, nor, eqvRichard Henderson4-0/+81
Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg: Add logical simplifications during gvec expandRichard Henderson1-5/+30
We handle many of these during integer expansion, and the rest of them during integer optimization. Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-11avoid TABs in files that only contain a fewPaolo Bonzini1-2/+2
Most files that have TABs only contain a handful of them. Change them to spaces so that we don't confuse people. disas, standard-headers, linux-headers and libdecnumber are imported from other projects and probably should be exempted from the check. Outside those, after this patch the following files still contain both 8-space and TAB sequences at the beginning of the line. Many of them have a majority of TABs, or were initially committed with all tabs. bsd-user/i386/target_syscall.h bsd-user/x86_64/target_syscall.h crypto/aes.c hw/audio/fmopl.c hw/audio/fmopl.h hw/block/tc58128.c hw/display/cirrus_vga.c hw/display/xenfb.c hw/dma/etraxfs_dma.c hw/intc/sh_intc.c hw/misc/mst_fpga.c hw/net/pcnet.c hw/sh4/sh7750.c hw/timer/m48t59.c hw/timer/sh_timer.c include/crypto/aes.h include/disas/bfd.h include/hw/sh4/sh.h libdecnumber/decNumber.c linux-headers/asm-generic/unistd.h linux-headers/linux/kvm.h linux-user/alpha/target_syscall.h linux-user/arm/nwfpe/double_cpdo.c linux-user/arm/nwfpe/fpa11_cpdt.c linux-user/arm/nwfpe/fpa11_cprt.c linux-user/arm/nwfpe/fpa11.h linux-user/flat.h linux-user/flatload.c linux-user/i386/target_syscall.h linux-user/ppc/target_syscall.h linux-user/sparc/target_syscall.h linux-user/syscall.c linux-user/syscall_defs.h linux-user/x86_64/target_syscall.h slirp/cksum.c slirp/if.c slirp/ip.h slirp/ip_icmp.c slirp/ip_icmp.h slirp/ip_input.c slirp/ip_output.c slirp/mbuf.c slirp/misc.c slirp/sbuf.c slirp/socket.c slirp/socket.h slirp/tcp_input.c slirp/tcpip.h slirp/tcp_output.c slirp/tcp_subr.c slirp/tcp_timer.c slirp/tftp.c slirp/udp.c slirp/udp.h target/cris/cpu.h target/cris/mmu.c target/cris/op_helper.c target/sh4/helper.c target/sh4/op_helper.c target/sh4/translate.c tcg/sparc/tcg-target.inc.c tests/tcg/cris/check_addo.c tests/tcg/cris/check_moveq.c tests/tcg/cris/check_swap.c tests/tcg/multiarch/test-mmap.c ui/vnc-enc-hextile-template.h ui/vnc-enc-zywrle.h util/envlist.c util/readline.c The following have only TABs: bsd-user/i386/target_signal.h bsd-user/sparc64/target_signal.h bsd-user/sparc64/target_syscall.h bsd-user/sparc/target_signal.h bsd-user/sparc/target_syscall.h bsd-user/x86_64/target_signal.h crypto/desrfb.c hw/audio/intel-hda-defs.h hw/core/uboot_image.h hw/sh4/sh7750_regnames.c hw/sh4/sh7750_regs.h include/hw/cris/etraxfs_dma.h linux-user/alpha/termbits.h linux-user/arm/nwfpe/fpopcode.h linux-user/arm/nwfpe/fpsr.h linux-user/arm/syscall_nr.h linux-user/arm/target_signal.h linux-user/cris/target_signal.h linux-user/i386/target_signal.h linux-user/linux_loop.h linux-user/m68k/target_signal.h linux-user/microblaze/target_signal.h linux-user/mips64/target_signal.h linux-user/mips/target_signal.h linux-user/mips/target_syscall.h linux-user/mips/termbits.h linux-user/ppc/target_signal.h linux-user/sh4/target_signal.h linux-user/sh4/termbits.h linux-user/sparc64/target_syscall.h linux-user/sparc/target_signal.h linux-user/x86_64/target_signal.h linux-user/x86_64/termbits.h pc-bios/optionrom/optionrom.h slirp/mbuf.h slirp/misc.h slirp/sbuf.h slirp/tcp.h slirp/tcp_timer.h slirp/tcp_var.h target/i386/svm.h target/sparc/asi.h target/xtensa/core-dc232b/xtensa-modules.inc.c target/xtensa/core-dc233c/xtensa-modules.inc.c target/xtensa/core-de212/core-isa.h target/xtensa/core-de212/xtensa-modules.inc.c target/xtensa/core-fsf/xtensa-modules.inc.c target/xtensa/core-sample_controller/core-isa.h target/xtensa/core-sample_controller/xtensa-modules.inc.c target/xtensa/core-test_kc705_be/core-isa.h target/xtensa/core-test_kc705_be/xtensa-modules.inc.c tests/tcg/cris/check_abs.c tests/tcg/cris/check_addc.c tests/tcg/cris/check_addcm.c tests/tcg/cris/check_addoq.c tests/tcg/cris/check_bound.c tests/tcg/cris/check_ftag.c tests/tcg/cris/check_int64.c tests/tcg/cris/check_lz.c tests/tcg/cris/check_openpf5.c tests/tcg/cris/check_sigalrm.c tests/tcg/cris/crisutils.h tests/tcg/cris/sys.c tests/tcg/i386/test-i386-ssse3.c ui/vgafont.h Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20181213223737.11793-3-pbonzini@redhat.com> Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Eric Blake <eblake@redhat.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11qemu/queue.h: simplify reverse access to QTAILQPaolo Bonzini2-4/+4
The new definition of QTAILQ does not require passing the headname, remove it. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11qemu/queue.h: leave head structs anonymous unless necessaryPaolo Bonzini1-1/+1
Most list head structs need not be given a name. In most cases the name is given just in case one is going to use QTAILQ_LAST, QTAILQ_PREV or reverse iteration, but this does not apply to lists of other kinds, and even for QTAILQ in practice this is only rarely needed. In addition, we will soon reimplement those macros completely so that they do not need a name for the head struct. So clean up everything, not giving a name except in the rare case where it is necessary. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-12-26tcg: Improve call argument loadingRichard Henderson1-1/+2
Free the argument register only after we have verified that the temporary is not already in that register. This case is likely now that we are back propagating the preferred register. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Record register preferences during livenessRichard Henderson1-32/+165
With these preferences, we can arrange for function call arguments to be computed into the proper registers instead of requiring extra moves. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add TCG_OPF_BB_EXITRichard Henderson3-10/+16
Use this to notice the opcodes that exit the TB, which implies that local temps are really dead and need not be synced. Previously we so marked the true end of the TB, but that was immediately overwritten by the la_bb_end invoked by any TCG_OPF_BB_END opcode, like exit_tb. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Split out more subroutines from liveness_pass_1Richard Henderson1-12/+23
Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Rename and adjust liveness_pass_1 helpersRichard Henderson1-8/+5
No need for a "tcg_" prefix for a static function; we already have another "la_" prefix for indicating liveness analysis. Pass in nb_globals and nb_temps, as we will already have them in registers for other loops within the parent function. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Reindent parts of liveness_pass_1Richard Henderson1-67/+70
There are two blocks of the form if (foo) { stuff1; goto bar; } else { baz: stuff2; } which have unnecessary and confusing indentation. Remove the else and unindent stuff2. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Dump register preference info with livenessRichard Henderson2-10/+37
Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Improve register allocation for matching constraintsRichard Henderson1-12/+24
Try harder to honor the output_pref. When we're forced to allocate a second register for the input, it does not need to use the input constraint; that will be honored by the register we allocate for the output and a move is already required. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add output_pref to TCGOpRichard Henderson2-7/+14
Allocate storage for, but do not yet fill in, per-opcode preferences for the output operands. Pass it in to the register allocation routines for output operands. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add preferred_reg argument to tcg_reg_alloc_do_moviRichard Henderson1-4/+5
Pass this through to temp_sync. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add preferred_reg argument to temp_syncRichard Henderson1-8/+8
Pass this through to tcg_reg_alloc. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add preferred_reg argument to temp_loadRichard Henderson1-9/+9
Pass this through to tcg_reg_alloc. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add preferred_reg argument to tcg_reg_allocRichard Henderson1-22/+81
This new argument will aid register allocation by indicating how the temporary will be used in future. If the preference cannot be satisfied, fall back to the constraints of the current insn. Short circuit the preference when it cannot be satisfied or if it does not further constrain the operation. With an eye toward optimizing function call sequences, optimize for the preferred_reg set containing a single register. For the moment, all users pass 0 for preference. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 10:50:46 +0000