Mesa (main): pan/bi: Imply round mode most of the time

[GitLab Mirror]

Module: Mesa
Branch: main
Commit: 1fb4427a7aeeca7ada1ff57faad69a56da1c53cd
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=1fb4427a7aeeca7ada1ff57faad69a56da1c53cd

Author: Alyssa Rosenzweig <alyssa at collabora.com>
Date:   Sun Feb 27 15:46:17 2022 -0500

pan/bi: Imply round mode most of the time

Much less noisy, and provides a path to further improvements. There is a slight
behaviour change: int-to-float conversions now use RTE instead of RTZ. For
32-bit opcodes, this affects conversions of integers with magnitude greater than
2^23 by at most 1 ulp. As this behaviour is unspecified in GLSL, this change is
believed to be acceptable.

Signed-off-by: Alyssa Rosenzweig <alyssa at collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15187>

---

 src/panfrost/bifrost/bi_builder.h.py               |  18 ++-
 src/panfrost/bifrost/bifrost_compile.c             | 140 ++++++++++-----------
 src/panfrost/bifrost/bifrost_isa.py                |   1 +
 src/panfrost/bifrost/test/test-constant-fold.cpp   |   4 +-
 src/panfrost/bifrost/test/test-optimizer.cpp       | 134 ++++++++++----------
 .../bifrost/test/test-scheduler-predicates.cpp     |   8 +-
 src/panfrost/bifrost/valhall/test/test-add-imm.cpp |  40 +++---
 .../bifrost/valhall/test/test-lower-isel.cpp       |   2 +-
 src/panfrost/bifrost/valhall/test/test-packing.cpp |  31 +++--
 .../bifrost/valhall/test/test-validate-fau.cpp     |  40 +++---
 10 files changed, 209 insertions(+), 209 deletions(-)

Diff:   http://cgit.freedesktop.org/mesa/mesa/diff/?id=1fb4427a7aeeca7ada1ff57faad69a56da1c53cd