mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
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2c17f97fe6
Previously, all of the back-ends (ir_to_mesa, st_glsl_to_tgsi, and the
i965 fs and vec4 visitors) had nearly identical logic for handling
bounded loops. This replaces the duplicate logic with an equivalent
lowering pass that is used by all the back-ends.
Note: on i965, there is a slight increase in instruction count. For
example, a loop like this:
for (int i = 0; i < 100; i++) {
total += i;
}
would previously compile down to this (vec4) native code:
mov(8) g4<1>.xD 0D
mov(8) g8<1>.xD 0D
loop:
cmp.ge.f0(8) null g8<4;4,1>.xD 100D
(+f0) break(8)
add(8) g5<1>.xD g5<4;4,1>.xD g4<4;4,1>.xD
add(8) g8<1>.xD g8<4;4,1>.xD 1D
add(8) g4<1>.xD g4<4;4,1>.xD 1D
while(8) loop
After this patch, the "(+f0) break(8)" turns into:
(+f0) if(8)
break(8)
endif(8)
because the back-end isn't smart enough to recognize that "if
(condition) break;" can be done using a conditional break instruction.
However, it should be relatively easy for a future peephole
optimization to properly optimize this.
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
115 lines
4 KiB
Text
115 lines
4 KiB
Text
# shared source lists for Makefile, SConscript, and Android.mk
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GLSL_SRCDIR = $(top_srcdir)/src/glsl
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GLSL_BUILDDIR = $(top_builddir)/src/glsl
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# libglcpp
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LIBGLCPP_FILES = \
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$(GLSL_SRCDIR)/ralloc.c \
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$(GLSL_SRCDIR)/glcpp/pp.c
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LIBGLCPP_GENERATED_FILES = \
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$(GLSL_BUILDDIR)/glcpp/glcpp-lex.c \
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$(GLSL_BUILDDIR)/glcpp/glcpp-parse.c
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# libglsl
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LIBGLSL_FILES = \
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$(GLSL_SRCDIR)/ast_array_index.cpp \
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$(GLSL_SRCDIR)/ast_expr.cpp \
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$(GLSL_SRCDIR)/ast_function.cpp \
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$(GLSL_SRCDIR)/ast_to_hir.cpp \
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$(GLSL_SRCDIR)/ast_type.cpp \
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$(GLSL_SRCDIR)/builtin_functions.cpp \
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$(GLSL_SRCDIR)/builtin_types.cpp \
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$(GLSL_SRCDIR)/builtin_variables.cpp \
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$(GLSL_SRCDIR)/glsl_parser_extras.cpp \
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$(GLSL_SRCDIR)/glsl_types.cpp \
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$(GLSL_SRCDIR)/glsl_symbol_table.cpp \
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$(GLSL_SRCDIR)/hir_field_selection.cpp \
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$(GLSL_SRCDIR)/ir_basic_block.cpp \
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$(GLSL_SRCDIR)/ir_builder.cpp \
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$(GLSL_SRCDIR)/ir_clone.cpp \
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$(GLSL_SRCDIR)/ir_constant_expression.cpp \
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$(GLSL_SRCDIR)/ir.cpp \
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$(GLSL_SRCDIR)/ir_equals.cpp \
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$(GLSL_SRCDIR)/ir_expression_flattening.cpp \
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$(GLSL_SRCDIR)/ir_function_can_inline.cpp \
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$(GLSL_SRCDIR)/ir_function_detect_recursion.cpp \
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$(GLSL_SRCDIR)/ir_function.cpp \
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$(GLSL_SRCDIR)/ir_hierarchical_visitor.cpp \
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$(GLSL_SRCDIR)/ir_hv_accept.cpp \
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$(GLSL_SRCDIR)/ir_import_prototypes.cpp \
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$(GLSL_SRCDIR)/ir_print_visitor.cpp \
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$(GLSL_SRCDIR)/ir_reader.cpp \
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$(GLSL_SRCDIR)/ir_rvalue_visitor.cpp \
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$(GLSL_SRCDIR)/ir_set_program_inouts.cpp \
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$(GLSL_SRCDIR)/ir_validate.cpp \
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$(GLSL_SRCDIR)/ir_variable_refcount.cpp \
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$(GLSL_SRCDIR)/linker.cpp \
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$(GLSL_SRCDIR)/link_atomics.cpp \
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$(GLSL_SRCDIR)/link_functions.cpp \
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$(GLSL_SRCDIR)/link_interface_blocks.cpp \
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$(GLSL_SRCDIR)/link_uniforms.cpp \
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$(GLSL_SRCDIR)/link_uniform_initializers.cpp \
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$(GLSL_SRCDIR)/link_uniform_block_active_visitor.cpp \
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$(GLSL_SRCDIR)/link_uniform_blocks.cpp \
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$(GLSL_SRCDIR)/link_varyings.cpp \
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$(GLSL_SRCDIR)/loop_analysis.cpp \
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$(GLSL_SRCDIR)/loop_controls.cpp \
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$(GLSL_SRCDIR)/loop_unroll.cpp \
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$(GLSL_SRCDIR)/lower_bounded_loops.cpp \
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$(GLSL_SRCDIR)/lower_clip_distance.cpp \
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$(GLSL_SRCDIR)/lower_discard.cpp \
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$(GLSL_SRCDIR)/lower_discard_flow.cpp \
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$(GLSL_SRCDIR)/lower_if_to_cond_assign.cpp \
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$(GLSL_SRCDIR)/lower_instructions.cpp \
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$(GLSL_SRCDIR)/lower_jumps.cpp \
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$(GLSL_SRCDIR)/lower_mat_op_to_vec.cpp \
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$(GLSL_SRCDIR)/lower_noise.cpp \
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$(GLSL_SRCDIR)/lower_packed_varyings.cpp \
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$(GLSL_SRCDIR)/lower_named_interface_blocks.cpp \
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$(GLSL_SRCDIR)/lower_packing_builtins.cpp \
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$(GLSL_SRCDIR)/lower_texture_projection.cpp \
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$(GLSL_SRCDIR)/lower_variable_index_to_cond_assign.cpp \
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$(GLSL_SRCDIR)/lower_vec_index_to_cond_assign.cpp \
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$(GLSL_SRCDIR)/lower_vec_index_to_swizzle.cpp \
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$(GLSL_SRCDIR)/lower_vector.cpp \
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$(GLSL_SRCDIR)/lower_vector_insert.cpp \
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$(GLSL_SRCDIR)/lower_output_reads.cpp \
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$(GLSL_SRCDIR)/lower_ubo_reference.cpp \
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$(GLSL_SRCDIR)/opt_algebraic.cpp \
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$(GLSL_SRCDIR)/opt_array_splitting.cpp \
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$(GLSL_SRCDIR)/opt_constant_folding.cpp \
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$(GLSL_SRCDIR)/opt_constant_propagation.cpp \
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$(GLSL_SRCDIR)/opt_constant_variable.cpp \
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$(GLSL_SRCDIR)/opt_copy_propagation.cpp \
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$(GLSL_SRCDIR)/opt_copy_propagation_elements.cpp \
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$(GLSL_SRCDIR)/opt_cse.cpp \
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$(GLSL_SRCDIR)/opt_dead_builtin_varyings.cpp \
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$(GLSL_SRCDIR)/opt_dead_code.cpp \
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$(GLSL_SRCDIR)/opt_dead_code_local.cpp \
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$(GLSL_SRCDIR)/opt_dead_functions.cpp \
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$(GLSL_SRCDIR)/opt_flatten_nested_if_blocks.cpp \
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$(GLSL_SRCDIR)/opt_flip_matrices.cpp \
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$(GLSL_SRCDIR)/opt_function_inlining.cpp \
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$(GLSL_SRCDIR)/opt_if_simplification.cpp \
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$(GLSL_SRCDIR)/opt_noop_swizzle.cpp \
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$(GLSL_SRCDIR)/opt_redundant_jumps.cpp \
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$(GLSL_SRCDIR)/opt_structure_splitting.cpp \
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$(GLSL_SRCDIR)/opt_swizzle_swizzle.cpp \
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$(GLSL_SRCDIR)/opt_tree_grafting.cpp \
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$(GLSL_SRCDIR)/s_expression.cpp \
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$(GLSL_SRCDIR)/strtod.c
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# glsl_compiler
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GLSL_COMPILER_CXX_FILES = \
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$(GLSL_SRCDIR)/standalone_scaffolding.cpp \
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$(GLSL_SRCDIR)/main.cpp
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# libglsl generated sources
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LIBGLSL_GENERATED_CXX_FILES = \
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$(GLSL_BUILDDIR)/glsl_lexer.cpp \
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$(GLSL_BUILDDIR)/glsl_parser.cpp
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