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intel/compiler: Don't emit no-op cr0 changes

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If mask is 0, we're asking for no changes to cr0.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5566>
This commit is contained in:
Matt Turner
2020-06-19 12:33:31 -07:00
committed by Marge Bot
parent fe14dc98bf
commit 8da810a7fb
1 changed files with 3 additions and 0 deletions
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src/intel/compiler/brw_fs_visitor.cpp
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@@ -258,6 +258,9 @@ fs_visitor::emit_shader_float_controls_execution_mode()
fs_builder abld = bld.annotate("shader floats control execution mode"); fs_builder abld = bld.annotate("shader floats control execution mode");
unsigned mask, mode = brw_rnd_mode_from_nir(execution_mode, &mask); unsigned mask, mode = brw_rnd_mode_from_nir(execution_mode, &mask);
if (mask == 0)
return;
abld.emit(SHADER_OPCODE_FLOAT_CONTROL_MODE, bld.null_reg_ud(), abld.emit(SHADER_OPCODE_FLOAT_CONTROL_MODE, bld.null_reg_ud(),
brw_imm_d(mode), brw_imm_d(mask)); brw_imm_d(mode), brw_imm_d(mask));
} }