Module: Mesa Branch: master Commit: 7b869710a1c29b535aceda74220594f12dc3beb0 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=7b869710a1c29b535aceda74220594f12dc3beb0
Author: Ian Romanick <[email protected]> Date: Mon Apr 27 12:11:17 2020 -0700 nir/algebraic: Require operands to iand be 32-bit With the mask value 0x80000000, the other operand must be 32-bit. This fixes failures in dEQP-VK.subgroups.ballot_mask.ext_shader_subgroup_ballot.*.gl_subgroupgemaskarb_* tests from Vulkan 1.2.2 CTS. Checking one of the tests, it appears that the tests are doing 64-bit iand with 0x0000000080000000, then comparing the result with zero. Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/2834 Fixes: 88eb8f190bd ("nir/algebraic: Simplify logic to detect sign of an integer") Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Alyssa Rosenzweig <[email protected]> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4770> --- src/compiler/nir/nir_opt_algebraic.py | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index b2643641a8e..58ff35af0b0 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -517,10 +517,10 @@ optimizations.extend([ (('iand@32', a, ('inot', ('ishr', a, 31))), ('imax', a, 0)), # Simplify logic to detect sign of an integer. - (('ieq', ('iand', a, 0x80000000), 0x00000000), ('ige', a, 0)), - (('ine', ('iand', a, 0x80000000), 0x80000000), ('ige', a, 0)), - (('ine', ('iand', a, 0x80000000), 0x00000000), ('ilt', a, 0)), - (('ieq', ('iand', a, 0x80000000), 0x80000000), ('ilt', a, 0)), + (('ieq', ('iand', 'a@32', 0x80000000), 0x00000000), ('ige', a, 0)), + (('ine', ('iand', 'a@32', 0x80000000), 0x80000000), ('ige', a, 0)), + (('ine', ('iand', 'a@32', 0x80000000), 0x00000000), ('ilt', a, 0)), + (('ieq', ('iand', 'a@32', 0x80000000), 0x80000000), ('ilt', a, 0)), (('ine', ('ushr', 'a@32', 31), 0), ('ilt', a, 0)), (('ieq', ('ushr', 'a@32', 31), 0), ('ige', a, 0)), (('ieq', ('ushr', 'a@32', 31), 1), ('ilt', a, 0)), _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
