SPIRV-Tools/source/opt/CMakeLists.txt
Diego Novillo 4ba9dcc8a0 Implement SSA CCP (SSA Conditional Constant Propagation).
This implements the conditional constant propagation pass proposed in

Constant propagation with conditional branches,
Wegman and Zadeck, ACM TOPLAS 13(2):181-210.

The main logic resides in CCPPass::VisitInstruction.  Instruction that
may produce a constant value are evaluated with the constant folder. If
they produce a new constant, the instruction is considered interesting.
Otherwise, it's considered varying (for unfoldable instructions) or
just not interesting (when not enough operands have a constant value).

The other main piece of logic is in CCPPass::VisitBranch.  This
evaluates the selector of the branch.  When it's found to be a known
value, it computes the destination basic block and sets it.  This tells
the propagator which branches to follow.

The patch required extensions to the constant manager as well. Instead
of hashing the Constant pointers, this patch changes the constant pool
to hash the contents of the Constant.  This allows the lookups to be
done using the actual values of the Constant, preventing duplicate
definitions.
2017-12-21 14:29:45 -05:00

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3.8 KiB
CMake

# Copyright (c) 2016 Google Inc.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
add_library(SPIRV-Tools-opt
aggressive_dead_code_elim_pass.h
basic_block.h
block_merge_pass.h
build_module.h
ccp_pass.h
cfg_cleanup_pass.h
cfg.h
common_uniform_elim_pass.h
compact_ids_pass.h
constants.h
dead_branch_elim_pass.h
dead_variable_elimination.h
decoration_manager.h
def_use_manager.h
dominator_analysis.h
dominator_tree.h
eliminate_dead_constant_pass.h
eliminate_dead_functions_pass.h
feature_manager.h
flatten_decoration_pass.h
fold.h
fold_spec_constant_op_and_composite_pass.h
freeze_spec_constant_value_pass.h
function.h
inline_exhaustive_pass.h
inline_opaque_pass.h
inline_pass.h
insert_extract_elim.h
instruction.h
ir_context.h
ir_loader.h
local_access_chain_convert_pass.h
local_redundancy_elimination.h
local_single_block_elim_pass.h
local_single_store_elim_pass.h
local_ssa_elim_pass.h
log.h
mem_pass.h
merge_return_pass.h
module.h
null_pass.h
passes.h
pass.h
pass_manager.h
private_to_local_pass.h
propagator.h
redundancy_elimination.h
reflect.h
remove_duplicates_pass.h
scalar_replacement_pass.h
set_spec_constant_default_value_pass.h
strength_reduction_pass.h
strip_debug_info_pass.h
tree_iterator.h
type_manager.h
types.h
unify_const_pass.h
value_number_table.h
aggressive_dead_code_elim_pass.cpp
basic_block.cpp
block_merge_pass.cpp
build_module.cpp
ccp_pass.cpp
cfg_cleanup_pass.cpp
cfg.cpp
common_uniform_elim_pass.cpp
compact_ids_pass.cpp
constants.cpp
dead_branch_elim_pass.cpp
dead_variable_elimination.cpp
decoration_manager.cpp
def_use_manager.cpp
dominator_tree.cpp
eliminate_dead_constant_pass.cpp
eliminate_dead_functions_pass.cpp
feature_manager.cpp
flatten_decoration_pass.cpp
fold.cpp
fold_spec_constant_op_and_composite_pass.cpp
freeze_spec_constant_value_pass.cpp
function.cpp
inline_exhaustive_pass.cpp
inline_opaque_pass.cpp
inline_pass.cpp
insert_extract_elim.cpp
instruction.cpp
instruction_list.cpp
ir_context.cpp
ir_loader.cpp
local_access_chain_convert_pass.cpp
local_redundancy_elimination.cpp
local_single_block_elim_pass.cpp
local_single_store_elim_pass.cpp
local_ssa_elim_pass.cpp
mem_pass.cpp
merge_return_pass.cpp
module.cpp
optimizer.cpp
pass.cpp
pass_manager.cpp
private_to_local_pass.cpp
propagator.cpp
redundancy_elimination.cpp
remove_duplicates_pass.cpp
scalar_replacement_pass.cpp
set_spec_constant_default_value_pass.cpp
strength_reduction_pass.cpp
strip_debug_info_pass.cpp
type_manager.cpp
types.cpp
unify_const_pass.cpp
value_number_table.cpp
)
spvtools_default_compile_options(SPIRV-Tools-opt)
target_include_directories(SPIRV-Tools-opt
PUBLIC ${spirv-tools_SOURCE_DIR}/include
PUBLIC ${SPIRV_HEADER_INCLUDE_DIR}
PRIVATE ${spirv-tools_BINARY_DIR}
)
# We need the assembling and disassembling functionalities in the main library.
target_link_libraries(SPIRV-Tools-opt
PUBLIC ${SPIRV_TOOLS})
set_property(TARGET SPIRV-Tools-opt PROPERTY FOLDER "SPIRV-Tools libraries")
spvtools_check_symbol_exports(SPIRV-Tools-opt)
if(ENABLE_SPIRV_TOOLS_INSTALL)
install(TARGETS SPIRV-Tools-opt
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
endif(ENABLE_SPIRV_TOOLS_INSTALL)