Re: [PATCH], PowerPC IEEE 128-bit patch #7 (revised #2), Subpatch #12

[David Edelsohn <dje.gcc@gmail.com>]

On Fri, Oct 23, 2015 at 1:57 PM, Michael Meissner
<meissner@linux.vnet.ibm.com> wrote:
> This patch is the first of two rs6000.md patches to straighten out the IFmode,
> KFmode, and TFmode support.  Part of the change is to change the iterator names
> to be easier to understand, using IEEE128, IBM128, and FLOAT128 as the
> iterators.  This change, and the next change go through and have parallel insns
> for handling IFmode and TFmode (when -mabi=ibmlongdouble) for IBM extended
> double, and for handling KFmode and TFmode (when -mabi=ieeelongdouble).  The
> idea is to prepare the way in GCC 7.0 to change the default for long double.
>
> I have built the compiler with this patch and the previous subpatches (1-11).
> I have bootstrapped the compiler with all 16 subpatches installed, and there
> were no regressions.  Is it ok to install in the trunk?
>
> 2015-10-22  Michael Meissner  <meissner@linux.vnet.ibm.com>
>
>         * config/rs6000/rs6000.md (FLOAT128_SFDFTF): Delete iterator,
>         rework IEEE 128-bit floating point insns to deal with TFmode being
>         either IBM extended double or IEEE 128-bit floating point.
>         (IFKF): Likewise.
>         (IBM128): Update iterator to add condition that the mode is IBM
>         extended double.
>         (IEEE128): New iterator for IEEE 128-bit floating point.
>         (TFIFKF): Rename TFIFKF iterator to FLOAT128.
>         (FLOAT128): Likewise.
>         (signbit<mode>2): FLOAT128_IBM_P condition test moved into IBM128
>         iterator.
>         (neg<mode>2): Replace TFIFKF iterator with FLOAT128. Add support
>         for TFmode being IEEE 128-bit floating point. Use IEEE128 iterator
>         instead of hard coding TFmode or KFmode.
>         (negtf2_internal): Likewise.
>         (neg<mode>2_internal): Likewise.
>         (abs<mode>2): Likewise.
>         (abstf2_internal): Likewise.
>         (abs<mode>2_internal): Likewise.
>         (ieee_128bit_neg<mode>2): Likewise.
>         (ieee_128bit_neg<mode>2_internal): Likewise.
>         (ieee_128bit_abs<mode>2): Likewise.
>         (ieee_128bit_abs<mode>2_internal): Likewise.
>         (ieee_128bit_nabs<mode>2): Likewise.
>         (ieee_128bit_nabs<mode>2_internal): Likewise.
>         (extendiftf2): Add explicit conversions between 128-bit floating
>         point types. Drop the old conversions that had become unwieldy.
>         (extend<FLOAT128_SFDFTF:mode><IFKF:mode>2): Likewise.
>         (extendifkf2): Likewise.
>         (trunc<IFKF:mode><FLOAT128_SFDFTF:mode>2): Likewise.
>         (extendtfkf2): Likewise.
>         (fix_trunc<IFKF:mode><SDI:mode>2): Likewise.
>         (trunciftf2): Likewise.
>         (fixuns_trunc<IFKF:mode><SDI:mode>2): Likewise.
>         (truncifkf2): Likewise.
>         (float<SDI:mode><IFKF:mode>2): Likewise.
>         (trunckftf2): Likewise.
>         (floatuns<SDI:mode><IFKF:mode>2): Likewise.
>         (trunctfif2): Likewise.

Okay.

Thanks, David