This is a partial patch set showing the direction I believe the cleanups should go, as opposed to a complete conversion.
I add a bunch of float_flag_* bits that diagnose the reason for most float_flag_invalid, as guided by the requirements of the PowerPC VX* bits. I have converted some helpers to use these new flags but not all. A good signal for unconverted routines is the use of float*_is_signalling_nan, which should now be using float_flag_invalid_snan. I added float64x32_* arithmetic routines, which take float64 arguments and round the result to the range and precision of float32, while giving the result in float64 form. This is exactly what PowerPC requires for its single-precision math. This fixes double-rounding problems that exist in the current code, and are visible in the float_madds test. I add test reference files for float_madds and float_convs after fixing the bugs required to make the tests pass. r~ Richard Henderson (35): softfloat: Extend float_exception_flags to 16 bits softfloat: Add flag specific to Inf - Inf softfloat: Add flag specific to Inf * 0 softfloat: Add flags specific to Inf / Inf and 0 / 0 softfloat: Add flag specific to sqrt(-x) softfloat: Add flag specific to convert non-nan to int softfloat: Add flag specific to signaling nans target/ppc: Update float_invalid_op_addsub for new flags target/ppc: Update float_invalid_op_mul for new flags target/ppc: Update float_invalid_op_div for new flags target/ppc: Move float_check_status from FPU_FCTI to translate target/ppc: Update float_invalid_cvt for new flags target/ppc: Fix VXCVI return value target/ppc: Remove inline from do_fri target/ppc: Use FloatRoundMode in do_fri target/ppc: Tidy inexact handling in do_fri target/ppc: Clean up do_fri target/ppc: Update fmadd for new flags target/ppc: Split out do_fmadd target/ppc: Do not call do_float_check_status from do_fmadd target/ppc: Split out do_frsp target/ppc: Update do_frsp for new flags target/ppc: Use helper_todouble in do_frsp target/ppc: Update sqrt for new flags target/ppc: Update xsrqpi and xsrqpxp to new flags target/ppc: Update fre to new flags softfloat: Add float64r32 arithmetic routines target/ppc: Add helpers for fmadds et al target/ppc: Add helper for fsqrts target/ppc: Add helpers for fadds, fsubs, fdivs target/ppc: Add helper for fmuls target/ppc: Add helper for frsqrtes target/ppc: Update fres to new flags and float64r32 target/ppc: Use helper_todouble/tosingle in helper_xststdcsp test/tcg/ppc64le: Add float reference files include/fpu/softfloat-types.h | 23 +- include/fpu/softfloat.h | 14 +- target/ppc/helper.h | 10 + fpu/softfloat.c | 114 ++++- target/ppc/fpu_helper.c | 531 ++++++++++---------- fpu/softfloat-parts.c.inc | 57 ++- fpu/softfloat-specialize.c.inc | 12 +- target/ppc/translate/fp-impl.c.inc | 44 +- tests/tcg/ppc64le/float_convs.ref | 748 ++++++++++++++++++++++++++++ tests/tcg/ppc64le/float_madds.ref | 768 +++++++++++++++++++++++++++++ 10 files changed, 1996 insertions(+), 325 deletions(-) create mode 100644 tests/tcg/ppc64le/float_convs.ref create mode 100644 tests/tcg/ppc64le/float_madds.ref -- 2.25.1
