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[Qemu-devel] [PATCH v5 00/28] softfloat patch roundup

From: Richard Henderson
Subject: [Qemu-devel] [PATCH v5 00/28] softfloat patch roundup
Date: Mon, 14 May 2018 15:11:51 -0700

This is my SNaN patch set, Alex's float-float refactor, and a couple
of other random outstanding fpu patches.  This has been reordered so
as to be bisectable, since the float-float refactor requires the snan
work to avoid breakage.

This was built on top of pm215/target-arm.next to make it easier to test.
The whole tree is

  git://github.com/rth7680/qemu.git fpu-roundup

Changes since last:
  - Use v5 instead of v3, since Alex was up to v4 with float-float.
  - Incorporate feedback from pm215.
  - Include float128 fix from Petr.
  - Include further cleanups for default_nan and silence_nan.
    The first of these was inspired by a comment from pm215; 
    the rest follow as logical extensions.


Alex Bennée (4):
  target/arm: convert conversion helpers to fpst/ahp_flag
  target/arm: squash FZ16 behaviour for conversions
  fpu/softfloat: Partial support for ARM Alternative half-precision
  fpu/softfloat: re-factor float to float conversions

Petr Tesarik (1):
  fpu/softfloat: Fix conversion from uint64 to float128

Richard Henderson (23):
  fpu/softfloat: Merge NO_SIGNALING_NANS definitions
  fpu/softfloat: Split floatXX_silence_nan from floatXX_maybe_silence_nan
  fpu/softfloat: Move softfloat-specialize.h below FloatParts definition
  fpu/softfloat: Canonicalize NaN fraction
  fpu/softfloat: Introduce parts_is_snan_frac
  fpu/softfloat: Replace float_class_dnan with parts_default_nan
  fpu/softfloat: Replace float_class_msnan with parts_silence_nan
  target/arm: Use floatX_silence_nan when we have already checked for SNaN
  target/arm: Remove floatX_maybe_silence_nan from conversions
  target/hppa: Remove floatX_maybe_silence_nan from conversions
  target/m68k: Use floatX_silence_nan when we have already checked for SNaN
  target/mips: Remove floatX_maybe_silence_nan from conversions
  target/riscv: Remove floatX_maybe_silence_nan from conversions
  target/s390x: Remove floatX_maybe_silence_nan from conversions
  fpu/softfloat: Use float*_silence_nan in propagateFloat*NaN
  fpu/softfloat: Remove floatX_maybe_silence_nan
  fpu/softfloat: Specialize on snan_bit_is_one
  fpu/softfloat: Make is_nan et al available to softfloat-specialize.h
  fpu/softfloat: Pass FloatClass to pickNaN
  fpu/softfloat: Pass FloatClass to pickNaNMulAdd
  fpu/softfloat: Define floatN_default_nan in terms of parts_default_nan
  fpu/softfloat: Clean up parts_default_nan
  fpu/softfloat: Define floatN_silence_nan in terms of parts_silence_nan

 fpu/softfloat-specialize.h    | 691 ++++++++++++++-------------------
 include/fpu/softfloat-types.h |   1 +
 include/fpu/softfloat.h       |  18 +-
 target/arm/helper.h           |  10 +-
 target/arm/translate.h        |  12 +
 fpu/softfloat.c               | 708 ++++++++++++----------------------
 target/arm/helper-a64.c       |   7 +-
 target/arm/helper.c           | 114 +++---
 target/arm/translate-a64.c    |  38 +-
 target/arm/translate.c        |  74 +++-
 target/hppa/cpu.c             |   1 -
 target/hppa/op_helper.c       |   2 -
 target/m68k/softfloat.c       |   3 +-
 target/mips/msa_helper.c      |   4 -
 target/mips/op_helper.c       |   2 -
 target/ppc/fpu_helper.c       |   1 -
 target/riscv/fpu_helper.c     |   6 +-
 target/s390x/fpu_helper.c     |  12 +-
 target/sh4/cpu.c              |   1 -
 target/unicore32/cpu.c        |   2 -
 20 files changed, 701 insertions(+), 1006 deletions(-)


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