../src/util/softfloat.c: In function ‘_mesa_shift_right_jam_m’:
../src/util/softfloat.c:432:16: warning: ‘tmp’ may be used uninitialized in this function [-Wmaybe-uninitialized]
432 | *tmp++ = 0;
You could actually hit this if you called _mesa_shift_right_jam_m with
size_words = 0 and dist < 32. Not that you'd _do_ that, but. In this
case do nothing instead of writing through an uninitialized pointer.
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8724>
This reverts commit 4fb2eddfdf.
This reverts commit 7a1deb16f8.
This reverts commit 2b6a172343.
This reverts commit 5af81393e4.
This reverts commit 87900afe5b.
A couple of problems were discovered after this series was merged that
cause breakage in different configurations:
(1) It seems that using -mf16c also enables AVX, leading to SIGILL on
platforms that do not support AVX.
(2) Since clang only warns about unknown flags, and as I understand
it Meson's handling in cc.has_argument() is broken, the F16C code is
wrongly enabled when clang is used, even for example on ARM, leading
to a compilation error.
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/3583
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6969>
Silence the warning about this always-true comparison.
src/util/softfloat.c:214:42: warning: comparison of constant 32768
with expression of type 'int16_t' (aka 'short') is always false
[-Wtautological-constant-out-of-range-compare]
} else if ((e > 0x1d) || (0x8000 <= m)) {
~~~~~~ ^ ~
Reviewed-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5174>
Implemented fadd, fsub, fmul and ffma for doubles and ffma for floats,
rounding to zero, using a modified implementation from Berkely
Softfloat 3e Library.
Their implementation correctness has been checked with the Berkeley
TestFloat Release 3e tool for x86_64.
v2:
- Reuse util_last_bit64() in _mesa_count_leading_zeros64()
implementation (Connor).
v3:
- Add a specific ffma for floats version (Connor).
- Implement the ffma for doubles version (Andres).
- Lots of fixes in fadd, fsub and fmul (Andres).
- Improved documentation (Andres).
v4:
- Added f64 -> f32 conversion function (Andres).
- Added f32 -> f16 RTZ conversion function (Andres).
Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Signed-off-by: Andres Gomez <agomez@igalia.com>
Tested-by: Andres Gomez <agomez@igalia.com>
Acked-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
