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intel/fs: use nomask for setting cr0 for float controls

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The instructions manipulation cr0 use the default mask on lane0. So if
for some reason that lane is disabled in some of the dispatchs, we can
end up not executing the instructions.

Fixes flakyness in dEQP-VK.spirv_assembly.instruction.graphics.16bit_storage.uniform_float_32_to_16.uniform_matrix_float_rtz_frag

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: mesa-stable
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22314>
This commit is contained in:
Lionel Landwerlin 2023-04-05 15:38:34 +03:00 • committed by Marge Bot
parent 45a682650c
commit daa8003e45
2 changed files with 13 additions and 11 deletions
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2
src/intel/compiler/brw_eu_emit.c
View file

@ -3614,6 +3614,8 @@ void
brw_float_controls_mode(struct brw_codegen *p,
unsigned mode, unsigned mask)
{
assert(p->current->mask_control == BRW_MASK_DISABLE);
/* From the Skylake PRM, Volume 7, page 760:
* "Implementation Restriction on Register Access: When the control
* register is used as an explicit source and/or destination, hardware

12
src/intel/compiler/brw_fs_nir.cpp
View file

@ -1030,7 +1030,7 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr,
rnd = brw_rnd_mode_from_nir_op(instr->op);
if (BRW_RND_MODE_UNSPECIFIED != rnd)
bld.emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(), brw_imm_d(rnd));
bld.exec_all().emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(), brw_imm_d(rnd));
assert(type_sz(op[0].type) < 8); /* brw_nir_lower_conversions */
inst = bld.F32TO16(result, op[0]);
@ -1139,7 +1139,7 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr,
if (nir_has_any_rounding_mode_enabled(execution_mode)) {
brw_rnd_mode rnd =
brw_rnd_mode_from_execution_mode(execution_mode);
bld.emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
bld.exec_all().emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
brw_imm_d(rnd));
}
@ -1192,7 +1192,7 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr,
if (nir_has_any_rounding_mode_enabled(execution_mode)) {
brw_rnd_mode rnd =
brw_rnd_mode_from_execution_mode(execution_mode);
bld.emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
bld.exec_all().emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
brw_imm_d(rnd));
}
FALLTHROUGH;
@ -1258,7 +1258,7 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr,
if (nir_has_any_rounding_mode_enabled(execution_mode)) {
brw_rnd_mode rnd =
brw_rnd_mode_from_execution_mode(execution_mode);
bld.emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
bld.exec_all().emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
brw_imm_d(rnd));
}
@ -1806,7 +1806,7 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr,
if (nir_has_any_rounding_mode_enabled(execution_mode)) {
brw_rnd_mode rnd =
brw_rnd_mode_from_execution_mode(execution_mode);
bld.emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
bld.exec_all().emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
brw_imm_d(rnd));
}
@ -1817,7 +1817,7 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr,
if (nir_has_any_rounding_mode_enabled(execution_mode)) {
brw_rnd_mode rnd =
brw_rnd_mode_from_execution_mode(execution_mode);
bld.emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
bld.exec_all().emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
brw_imm_d(rnd));
}