[PATCH v3 00/57] tcg: Simplify calls to load/store helpers

[Richard Henderson]

v1: 
20230408024314.3357414-1-richard.henderson@linaro.org/">https://lore.kernel.org/qemu-devel/20230408024314.3357414-1-richard.henderson@linaro.org/
v2: 
20230411010512.5375-1-richard.henderson@linaro.org/">https://lore.kernel.org/qemu-devel/20230411010512.5375-1-richard.henderson@linaro.org/

There are several changes to the load/store helpers coming, and making
sure that those changes are properly reflected across all of the backends
was harrowing.

I have gone back and restarted by hoisting the code out of the backends
and into tcg.c.  We already have all of the parameters for the host
function call abi for "normal" helpers, we simply need to apply that to
the load/store slow path.

The major change for v3 is prepare_host_addr(), as a merge of several
routines and some code from tcg_out_qemu_{ld,st}.  This is pulled back
from my (working) atomicity patch set, making i128 easier.

The patches are many, but take heart: the diffstat is -523. :-)
About 1/3 of the patches have been reviewed in some form.


r~


Richard Henderson (57):
  tcg/loongarch64: Conditionalize tcg_out_exts_i32_i64
  tcg/mips: Conditionalize tcg_out_exts_i32_i64
  tcg/i386: Conditionalize tcg_out_extu_i32_i64
  tcg: Introduce tcg_out_movext2
  tcg/i386: Rationalize args to tcg_out_qemu_{ld,st}
  tcg/i386: Generalize multi-part load overlap test
  tcg/i386: Introduce HostAddress
  tcg/i386: Drop r0+r1 local variables from tcg_out_tlb_load
  tcg/i386: Introduce tcg_out_testi
  tcg/i386: Introduce prepare_host_addr
  tcg/i386: Use indexed addressing for softmmu fast path
  tcg/aarch64: Rationalize args to tcg_out_qemu_{ld,st}
  tcg/aarch64: Introduce HostAddress
  tcg/aarch64: Introduce prepare_host_addr
  tcg/arm: Rationalize args to tcg_out_qemu_{ld,st}
  tcg/arm: Introduce HostAddress
  tcg/arm: Introduce prepare_host_addr
  tcg/loongarch64: Rationalize args to tcg_out_qemu_{ld,st}
  tcg/loongarch64: Introduce HostAddress
  tcg/loongarch64: Introduce prepare_host_addr
  tcg/mips: Rationalize args to tcg_out_qemu_{ld,st}
  tcg/mips: Introduce prepare_host_addr
  tcg/ppc: Rationalize args to tcg_out_qemu_{ld,st}
  tcg/ppc: Introduce HostAddress
  tcg/ppc: Introduce prepare_host_addr
  tcg/riscv: Require TCG_TARGET_REG_BITS == 64
  tcg/riscv: Rationalize args to tcg_out_qemu_{ld,st}
  tcg/riscv: Introduce prepare_host_addr
  tcg/s390x: Pass TCGType to tcg_out_qemu_{ld,st}
  tcg/s390x: Introduce HostAddress
  tcg/s390x: Introduce prepare_host_addr
  tcg/sparc64: Drop is_64 test from tcg_out_qemu_ld data return
  tcg/sparc64: Pass TCGType to tcg_out_qemu_{ld,st}
  tcg: Move TCGLabelQemuLdst to tcg.c
  tcg: Replace REG_P with arg_loc_reg_p
  tcg: Introduce arg_slot_stk_ofs
  tcg: Widen helper_*_st[bw]_mmu val arguments
  tcg: Add routines for calling slow-path helpers
  tcg/i386: Convert tcg_out_qemu_ld_slow_path
  tcg/i386: Convert tcg_out_qemu_st_slow_path
  tcg/aarch64: Convert tcg_out_qemu_{ld,st}_slow_path
  tcg/arm: Convert tcg_out_qemu_{ld,st}_slow_path
  tcg/loongarch64: Convert tcg_out_qemu_{ld,st}_slow_path
  tcg/mips: Convert tcg_out_qemu_{ld,st}_slow_path
  tcg/ppc: Convert tcg_out_qemu_{ld,st}_slow_path
  tcg/riscv: Convert tcg_out_qemu_{ld,st}_slow_path
  tcg/s390x: Convert tcg_out_qemu_{ld,st}_slow_path
  tcg/loongarch64: Simplify constraints on qemu_ld/st
  tcg/mips: Remove MO_BSWAP handling
  tcg/mips: Reorg tlb load within prepare_host_addr
  tcg/mips: Simplify constraints on qemu_ld/st
  tcg/ppc: Reorg tcg_out_tlb_read
  tcg/ppc: Adjust constraints on qemu_ld/st
  tcg/ppc: Remove unused constraints A, B, C, D
  tcg/riscv: Simplify constraints on qemu_ld/st
  tcg/s390x: Use ALGFR in constructing softmmu host address
  tcg/s390x: Simplify constraints on qemu_ld/st

 include/tcg/tcg-ldst.h               |  10 +-
 tcg/loongarch64/tcg-target-con-set.h |   2 -
 tcg/loongarch64/tcg-target-con-str.h |   1 -
 tcg/mips/tcg-target-con-set.h        |  13 +-
 tcg/mips/tcg-target-con-str.h        |   2 -
 tcg/mips/tcg-target.h                |   4 +-
 tcg/ppc/tcg-target-con-set.h         |  11 +-
 tcg/ppc/tcg-target-con-str.h         |   6 -
 tcg/riscv/tcg-target-con-set.h       |   8 -
 tcg/riscv/tcg-target-con-str.h       |   1 -
 tcg/riscv/tcg-target.h               |  22 +-
 tcg/s390x/tcg-target-con-set.h       |   2 -
 tcg/s390x/tcg-target-con-str.h       |   1 -
 tcg/tcg-internal.h                   |   4 -
 accel/tcg/cputlb.c                   |   6 +-
 tcg/tcg.c                            | 582 +++++++++++++++-
 tcg/aarch64/tcg-target.c.inc         | 363 +++++-----
 tcg/arm/tcg-target.c.inc             | 726 ++++++++------------
 tcg/i386/tcg-target.c.inc            | 707 +++++++++-----------
 tcg/loongarch64/tcg-target.c.inc     | 376 +++++------
 tcg/mips/tcg-target.c.inc            | 946 ++++++++-------------------
 tcg/ppc/tcg-target.c.inc             | 637 ++++++++----------
 tcg/riscv/tcg-target.c.inc           | 508 +++++---------
 tcg/s390x/tcg-target.c.inc           | 393 +++++------
 tcg/sparc64/tcg-target.c.inc         |   8 +-
 tcg/tcg-ldst.c.inc                   |  14 -
 26 files changed, 2415 insertions(+), 2938 deletions(-)

-- 
2.34.1