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67f4838659
SPIRV-Tools/source
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Alastair Donaldson 67f4838659
spirv-fuzz: Make handling of synonym facts more efficient (#3301) 
The fact manager maintains an equivalence relation on data descriptors
that tracks when one data descriptor could be used in place of
another.  An algorithm to compute the closure of such facts allows
deducing new synonym facts from existing facts.  E.g., for two 2D
vectors u and v it is known that u.x is synonymous with v.x and u.y is
synonymous with v.y, it can be deduced that u and v are synonymous.

The closure computation algorithm is very expensive if we get large
equivalence relations.

This change addresses this in three ways:

- The size of equivalence relations is reduced by limiting the extent
  to which the components of a composite are recursively noted as
  being equivalent, so that when we have large synonymous arrays we do
  not record all array elements as being pairwise equivalent.

- When computing the closure of facts, equivalence classes above a
  certain size are simply skipped (which can lead to missed facts)

- The closure computation is performed less frequently - it is invoked
  explicitly before fuzzer passes that will benefit from data synonym
  facts.  A new transformation is used to control its invocation, so
  that fuzzing and replaying do not get out of sync.

The change also tidies up the order in which some getters are declared
in FuzzerContext.
2020-04-20 19:02:49 +01:00
..
fuzz spirv-fuzz: Make handling of synonym facts more efficient (#3301) 2020-04-20 19:02:49 +01:00
link Handle conflict between debug info and existing validation rule (#3104) 2020-01-23 17:04:30 -05:00
opt Remove unreachable code. (#3304) 2020-04-15 14:41:52 -04:00
reduce Handle conflict between debug info and existing validation rule (#3104) 2020-01-23 17:04:30 -05:00
util Support constant-folding UConvert and SConvert (#2960) 2019-10-16 16:29:55 -04:00
val Remove implicit fallthrough (#3298) 2020-04-14 12:57:48 -04:00
assembly_grammar.cpp Add validation for SPV_NV_cooperative_matrix (#2404) 2019-02-25 17:43:11 -05:00
assembly_grammar.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
binary.cpp Add support for KHR_ray_{query,tracing} extensions (#3235) 2020-03-17 15:30:19 -04:00
binary.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
cfa.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
CMakeLists.txt Combine extinst-name and extinst-output-base into one arg. (#3200) 2020-02-25 00:46:52 -05:00
diagnostic.cpp Remove source/message.h (#1838) 2018-08-14 15:41:21 -04:00
diagnostic.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
disassemble.cpp Add support for KHR_ray_{query,tracing} extensions (#3235) 2020-03-17 15:30:19 -04:00
disassemble.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
enum_set.h Instrument: Debug Printf support (#3215) 2020-03-12 09:19:52 -04:00
enum_string_mapping.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
enum_string_mapping.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
ext_inst.cpp Handle conflict between debug info and existing validation rule (#3104) 2020-01-23 17:04:30 -05:00
ext_inst.h Handle conflict between debug info and existing validation rule (#3104) 2020-01-23 17:04:30 -05:00
extensions.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
extensions.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
extinst.debuginfo.grammar.json Add asm, dis support for DebugInfo extended instruction set 2017-12-22 09:39:36 -05:00
extinst.opencl.debuginfo.100.grammar.json Support OpenCL.DebugInfo.100 extended instruction set (#3080) 2019-12-19 17:16:26 -05:00
extinst.spv-amd-gcn-shader.grammar.json
extinst.spv-amd-shader-ballot.grammar.json Add support for SPV AMD extensions 2017-06-21 15:08:07 -04:00
extinst.spv-amd-shader-explicit-vertex-parameter.grammar.json Add support for SPV AMD extensions 2017-06-21 15:08:07 -04:00
extinst.spv-amd-shader-trinary-minmax.grammar.json Add support for SPV AMD extensions 2017-06-21 15:08:07 -04:00
instruction.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
latest_version_glsl_std_450_header.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
latest_version_opencl_std_header.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
latest_version_spirv_header.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
libspirv.cpp Add SpirvTools::IsValid(). (#2326) 2019-01-24 09:45:09 -05:00
macro.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
name_mapper.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
name_mapper.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
opcode.cpp Add support for KHR_ray_{query,tracing} extensions (#3235) 2020-03-17 15:30:19 -04:00
opcode.h spirv-fuzz: Add swap commutable operands transformation (#3205) 2020-03-05 08:18:39 +00:00
operand.cpp Add support for KHR_ray_{query,tracing} extensions (#3235) 2020-03-17 15:30:19 -04:00
operand.h Handle conflict between debug info and existing validation rule (#3104) 2020-01-23 17:04:30 -05:00
parsed_operand.cpp Replace asserts with returns 2018-08-08 15:13:04 -04:00
parsed_operand.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
pch_source.cpp Enable precompiled headers for spirv-tools(-shared) and some unit tests (#2026) 2018-11-06 09:26:23 -05:00
pch_source.h Enable precompiled headers for spirv-tools(-shared) and some unit tests (#2026) 2018-11-06 09:26:23 -05:00
print.cpp build: cmake: Add support for Fuchsia. (#3062) 2019-11-26 16:22:59 -05:00
print.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
software_version.cpp Add missing function parameters in libspirv.h 2018-04-03 10:10:43 -04:00
spirv_constant.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
spirv_definition.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
spirv_endian.cpp Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00
spirv_endian.h Rewrite include guards (#1793) 2018-08-03 08:05:33 -04:00
spirv_fuzzer_options.cpp spirv-fuzz: Improve debugging facilities (#3074) 2019-11-27 18:05:56 +00:00
spirv_fuzzer_options.h spirv-fuzz: Improve debugging facilities (#3074) 2019-11-27 18:05:56 +00:00
spirv_optimizer_options.cpp Add —preserve-bindings and —preserve-spec-constants (#2693) 2019-07-10 14:12:19 -04:00
spirv_optimizer_options.h Add —preserve-bindings and —preserve-spec-constants (#2693) 2019-07-10 14:12:19 -04:00
spirv_reducer_options.cpp Refactor reducer options (#2709) 2019-07-04 11:11:42 +01:00
spirv_reducer_options.h Refactor reducer options (#2709) 2019-07-04 11:11:42 +01:00
spirv_target_env.cpp Add spvParseVulkanEnv (#3142) 2020-01-23 17:20:32 -05:00
spirv_target_env.h Validate that in OpenGL env block variables have Binding (#2685) 2019-07-02 08:11:20 -04:00
spirv_validator_options.cpp Make pointers to isomorphic type interchangeable with option. (#2570) 2019-05-13 13:48:17 -04:00
spirv_validator_options.h Make pointers to isomorphic type interchangeable with option. (#2570) 2019-05-13 13:48:17 -04:00
table.cpp Add basic support for Vulkan 1.2: SPV_ENV_VULKAN_1_2 2020-01-14 20:06:19 -05:00
table.h Use last version (#2578) 2019-05-10 11:02:01 -04:00
text_handler.cpp Avoid GCC8 warning in text_handler.cpp. (#2197) 2018-12-13 15:03:28 -05:00
text_handler.h Remove source/message.h (#1838) 2018-08-14 15:41:21 -04:00
text.cpp Support OpenCL.DebugInfo.100 extended instruction set (#3080) 2019-12-19 17:16:26 -05:00
text.h Cleanup includes. (#1795) 2018-08-03 15:06:09 -04:00