| Revision history for SPIRV-Tools |
| |
| v2018.1 2018-03-02 |
| - General: |
| - Support Visual Studio 2013 again. (Continue support for VS 2015 and VS 2017.) |
| - Support building SPIRV-Tools as a shared library. |
| - Improve the HLSL legalization optimization recipe. #1311 |
| - Optimizer: |
| - General speedups. |
| - Remove generic dead code elimination functionality from transforms: |
| --eliminate-local-single-block |
| --eliminate-local-single-store |
| --eliminate-local-multi-store |
| To recover the previous behaviour, a recipe using those transforms should now |
| also invoke the --eliminate-dead-code-aggressive transform. |
| - Improve folding, including coverage for floating point, OpSelect, and arithmetic |
| with non-trivial constant operands. |
| - Add loop-invariant code motion pass. |
| - Add loop-unrolling pass, for honouring unroll hits. |
| - Add loop-unswitch pass. |
| - Add instruction simplification pass. |
| - Aggressive dead code elimination: Understands capability hierarchy when finding |
| instructions it can eliminate (combinators). (PR #1268) |
| - CCP can now fold floating point arithmetic. #1311 |
| - Validator: |
| - Validate barrier instructions. |
| - Check Vulkan-specific rules for atomics. |
| - Check Vulkan prohibition of Location or Component decorations on BuiltIn variables. |
| - Linker: |
| - Add --verify-ids option |
| - Add option to allow a resulting module to be partially linked. |
| - Handle OpModuleProcessed (instructions in SPIR-V layout section 7c) |
| - Fixes: |
| - #1265: Optimizer: Fix use-after free bug in if-conversion. (Fix object lifecycle bug |
| in type manager.) |
| - #1282: Fix new warnings found by GCC 8.0.1. |
| - #1285: Optimizer: Fix random failures during inlining. (Dangling references in DefUseManager) |
| - #1295: Optimizer: Fix incorrect handling of Phi nodes in CCP. |
| - #1300: Fix CCP: avoid bad CCP transitions and unsettled values. |
| - #1304: Avoid static-duration variables of class type (with constructors). |
| - #1323: Fix folding of an insert composite feeding a composite extract. |
| - #1339: Fix CCP: Handle OpConstantNull boolean values as conditions. |
| - #1341: DCEInst: Keep atomic instructions (and some others with side effects). |
| - #1354: Don't fold integer division. |
| - #1357: Support OpConstantNull in folding. |
| - #1361: CCP: Fix handling of non-constant module-scope values |
| |
| v2018.0 2018-02-02 |
| - General |
| - VisualStudio 2013 is no longer supported. VisualStudio 2015 is supported. |
| - Use "include/unified1" directory from SPIRV-Headers. Requires recent SPIRV-Headers source. |
| - Disassembler: spirv-dis adds --color option to force color disassembly. |
| - Optimizer: |
| - Add pass to eliminate dead insertions. |
| - Aggressive dead code elimination now removes OpSwitch constructs. |
| - Block merging occurs in more cases. |
| - Add driver workaround transform: replace OpUnreachable with harmless branch to merge. |
| - Improve instruction folding framework. |
| - Add loop analysis. |
| - Add scalar replacement of aggregates to size-optimization recipe. |
| - Add pass to replace instructions invalid for a shader stage, with a harmless value. |
| This changes the semantics of the program! Not for general use! |
| - Rearragne and add passes to performance-optimization recipe, to produce better results. |
| - Validator: |
| - Validate OpenCL extended instructions. |
| - Shaders can't perform atomics on floats. |
| - Validate memory semantics values in atomics. |
| - Validate instruction-adjacency constraints, e.g. OpPhi predecessors, merge instructions |
| immediately precede branches. |
| - Fixes: |
| - PR 1198: Optimizer: Fix CCP in presence of matrix constants. |
| - #1199: Optimizer: Fix CCP: don't propagate spec constants. |
| - #1203: Optimizer: Fix common uniform elim bug introduced by refactoring. |
| - #1210: Optimizer: Aggressive dead code elimination: Fix 'break' identification. |
| - #1212: Optimizer: Aggressive dead code elimination: Was skipping too many instructions. |
| - #1214: Optimizer: Aggressive dead code elimination: Fix infinite loop. |
| - #1228: Optimizer: Fix CCP: Handling of varying Phi nodes; was resulting in infinite loop. |
| - #1245: Optimizer: Dead branch elimination: Avoid a null pointer dereference. |
| - #1250: Optimizer: Dead branch elimination: Avoid spuriously reporting a change. |
| |
| v2017.3 2018-01-12 |
| - General: |
| - Support DebugInfo extended instruction set, targeted at OpenCL environments. |
| See the SPIR-V Registry. |
| - Generate a SPIRV-Tools.pc file for pkg-config. |
| - Optimizer: |
| - Progress for legalization of code generated from HLSL (issue #1118): |
| - Add --legalize-hlsl option to run transforms used to transform intermediate |
| code generated by HLSL to SPIR-V for Vulkan compilers. Those compilers |
| normally run these transforms automatically. This option is used for developing |
| those transforms. |
| - Add Private-to-Function variable conversion for modules with logical |
| addressing. |
| - Add --ccp: SSA Conditional Constant Propagation (CCP) |
| - Add --print-all to show disassembly for each optimization pass. |
| - Internal: Add loop descriptors and post-order tree iterator. |
| - Generalized dead branch elimination |
| - Aggressive dead code elimination (ADCE) now removes dead functions and |
| module-scope variables. |
| - Vector extract/insert elimination now optimizes through some cases of |
| VectorShuffle, and GLSL.std.450 Mix extended instruction. |
| - Validator: |
| - Add validation for GLSL.std.450 extended instruction set. |
| - Check out of bounds composite accesses, where that's statically computable. |
| Fixes #1112. |
| - Check upper bits of literal numbers that aren't a multiple of 32-bits wide. |
| - More validation of primitive instructions |
| - Add optional "relaxed" checking logical addressing mode to permit some |
| cases of pointer-to-pointer. Contributes to HLSL legalization (issue #1118). |
| - Fixes: |
| #1100: Validator: Image operand Sample can be used with OpImageSparseFetch, |
| OpImageSparseRead. |
| #1108: Remove duplicates transform was incorrectly removing non-duplicate |
| decorations. |
| #1111: Optimizer's type manager could reference deleted memory. |
| #1112: Fix decoration equality check, e.g. it is now symmetric. |
| #1129: Validator now disallows Dim=SupbassData for OpImageSparseRead. |
| #1143: Fix CCP: Was generating incorrect code for loops. |
| #1153: Fix CCP crash. |
| #1154: Optimizer's internal instruction-to-block mappings were sometimes |
| inconsistent. |
| #1159: Fix CCP infinite loop. |
| #1168: Fix dead branch elimination intermittently generating incorrect code. |
| Fixes https://github.com/KhronosGroup/glslang/issues/1205 |
| #1186: Fix validation of PackDouble2x32 and UnpackDouble2x32 |
| |
| v2017.2 2017-12-15 |
| - General: |
| - Support OpenCL 1.2, 2.0 target environments, including embedded profiles |
| - Add CONTRIBUTING.md |
| - Fix exit status code for spirv-link |
| - Disassember: Enable emitting ANSI colour codes to a string |
| - Library avoids polluting global namespace. The libraries can export C and C++ |
| symbols starting with "spv", or in a C++ namespace. Add a test for this. |
| - Linux release builds include debug information, for easier profiling |
| - Build bots no longer test VisualStudio 2013 |
| - Testing dependency RE2 requires VisualStudio 2015 or later |
| - Build bots check code formatting |
| - Optimizer: |
| - Add --skip-validation to spirv-opt |
| - Add dominance tree analysis |
| - Add generic value propagation engine |
| - Add global redundancy elimination within a function |
| - Add scalar replacement of function-scope variables of composite type |
| - Aggressive dead code elimination: Remove empty loops |
| - Killing an instruction notifies the IRContext |
| - IRContext::KillInst deletes the instruction |
| - Move CFG analysis to IRContext |
| - Add constant manager |
| - Fix: Don't consider derivative instructions as combinators. |
| - Fix: Don't delete an instruction twice in local dead-code-elimination |
| - Fix: Don't consider derivative instructions as combinators. |
| - Validator: |
| - Finish checking of image instructions (Section 3.32.10) |
| - Check sparse image instructions |
| - Check OpTypeImage, OpTypeSampleImage |
| - Check composite instructions (Section 3.32.12) |
| - Check atomic instructions (Section 3.32.18) |
| - Check OpEmitStreamVertex, OpEndStreamPrimitive instructions |
| - Re-enable validation of OpCopyObject |
| - OpKill, image ImplicitLod and QueryLod instructions can only be used in Fragment |
| shaders. |
| - Fixes for image instruction validation: |
| - Lod image operand only usable with ExplicitLod and OpImageFetch |
| - ExplicitLod Lod image operand must be float scalar |
| - OpImageFectch Lod image operand must be int scalar |
| - OpImageGather component operand must be 32-bits (integer scalar) |
| - OpImageQuerySizeLod Lod must be integer scalar |
| - Fixes: |
| #622: Remove names and decorations when inlining |
| #989: Aggressive dead code elim: Don't optimize away live breaks from a loop |
| #991: Fix validation of SPV_AMD_shader_ballot |
| #1004: Use after free of an instruction, in remove-duplicates transform |
| #1007: OpImageRead not required to return 4-component vector |
| #1009: OpImageRead can return scalar int/float types |
| #1011: OpImageWrite should allow scalar int/float texel types |
| #1012: Fix validat Dref type check |
| #1017: Load-store elimination considers variable initializations |
| #1034: Fix Windows debug build: operator< should be a weak ordering |
| #1083: Inlining: Set parent (function) for each inlined basic block. |
| #1075: Aggressive dead code elimination: Was leaving dangling references to |
| removed blocks. |
| |
| v2017.1 2017-11-23 |
| - Update README with details on the public_spirv_tools_dev@khronos.org mailing list. |
| - General: |
| - Automatically deploy built artifacts to GitHub Releases |
| - Add a Linker (module combiner). Under development. |
| - Add Android.mk for Android NDK builds. |
| - Add the 'effcee' library as an optional dependency for use in tests. |
| Eventually it will be a required dependency, once downstream projects have |
| a chance to adjust. Requires 're2' library. |
| - Avoid static-duration variables of class type (with constructors). |
| - Hack around bugs in gcc-4.8.1 template handling |
| - Faster opcode lookup |
| - Validator: |
| - Recognize extensions listed on SPIR-V registry, |
| through #25 SPV_AMD_shader_fragment_mask |
| - Validator issues an info message when it sees an unrecognized extension. |
| - Type check basic arithmetic operations |
| - Type check carry/extended arithmetic operations |
| - Type check vector arithmetic operations |
| - Type check Relational and Logical instructions |
| - Type check Bit instructions |
| - Check type uniqueness rules |
| - Check conversion instructions |
| - Check image instructions |
| - Check derivative instructions |
| - Check OpVectorShuffle |
| - Check OpBranchConditional |
| - OpModuleProcessed is only allowed after debug names section and before annotations |
| section. |
| - Checks the right kind of return is called for each function (void or non-void). |
| - Add option to relax type check when storing structs (--relax-store-struct) |
| - Optimizer: |
| - Refactoring internal representation of the module, including: |
| - IRContext: owns a module and manages analyses |
| - Instructions are owned by intrusive lists, and have unique IDs |
| - BasicBlock owns its instruction list. |
| - DefUseManager: change representation of uses, for faster processing |
| on large modules. |
| - Add high level recipes: -O, -Os, and -Oconfig |
| Recipes for -O and -Os are under development. |
| - Add eliminate-dead-function transform |
| - Add strength reduction transform: For now, convert multiply by power of 2 |
| to a bit shift. |
| - Add CFG cleanup transform |
| - Add removal of dead module-scope variables |
| - Add merge-return transform for modules without structured control flow |
| - Add redundancy elimination within a basic block (local value numbering) |
| - Extract-insert elimination: |
| - Recognize the case where the first instruction in the sequence is an |
| OpCompositeConstruct or OpConstantComposite |
| - Handle some cases of nested structs |
| - Dead branch elimination now can eliminate entire selection constructs |
| when all arms are dead. |
| - Compressing codec: |
| - Updated algorithm to 1.01, 1.02, 1.03 |
| - Not built by default. Use -DSPIRV_BUILD_COMPRESSION=ON to build. |
| - Codec can be parameterized by a customized model. |
| - Fixes: |
| #728: Fix decoration of inlined functions |
| #798: spirv-as should fail when given unrecognized long option |
| #800: Inliner: Fix inlining function into header of multi-block loop |
| #824: Eliminate-local-multi-store: Fix a crash |
| #826: Elimiante-local-multi-store: Fix a crash |
| #827: Fix crash when compact-ids transform runs before another transform. |
| #834: Add Cmake option to build the compressing codec. Off by default. |
| #911: Fix classification of Line and NoLine instructions |
| |
| v2017.0 2017-09-01 |
| - Update README to describe that assembler, disassembler, and binary parser support |
| are based on grammar files from the SPIRV-Headers repository. |
| |
| v2016.7 2017-09-01 |
| - Add SPIR-V 1.2 |
| - OpenCL 2.2 support is now based on SPIR-V 1.2 |
| - Support AMD extensions in assembler, disassembler: |
| SPV_AMD_gcn_shader |
| SPV_AMD_shader_ballot |
| SPV_AMD_shader_explicit_vertex_parameter |
| SPV_AMD_shader_trinary_minmax |
| SPV_AMD_gpu_shader_half_float |
| SPV_AMD_texture_gather_bias_lod |
| SPV_AMD_gpu_shader_int16 |
| - Optimizer: Add support for: |
| - Inline all function calls in entry points. |
| - Flatten decoration groups. Fixes #602 |
| - Id compaction (minimize Id bound). Fixes #624 |
| - Eliminate redundant composite insert followed by extract |
| - Simplify access chains to local variables |
| - Eliminate local variables with a single store, if possible |
| - Eliminate local variables with a several stores, if possible |
| - Eliminate loads and stores in same block to local variables |
| - Eliminate redundant insert/extract to composite values |
| - Aggressive dead instruction elimination |
| - Eliminate dead branches |
| - Merge blocks when the second can only be preceded by the first |
| - Eliminate ommon uniform loads |
| - Assembler: Add option to preserve numeric ids. Fixes #625 |
| - Add build target spirv-tools-vimsyntax to generate spvasm.vim, a SPIR-V |
| assembly syntax file for Vim. |
| - Version string: Allow overriding of wall clock timestamp with contents |
| of environment variable SOURCE_DATE_EPOCH. |
| - Validator implements relaxed rules for SPV_KHR_16bit_storage. |
| - CMake installation rules use GNUInstallDirs. For example, libraries |
| will be installed into a lib64 directory if that's the norm for the |
| current system. |
| - Fixes: |
| #500: Parameterize validator limit checks |
| #508: Support compilation under CYGWIN |
| #517: Fix validation when continue (or case) contstruct is also the head of a |
| nested control construct. |
| #551: If a merge block is reachable, it must be *strictly* dominated by its |
| header. |
| #548: Validator: Error when the reserved OpImageSparseSampleProj* opcodes |
| are used. |
| #611: spvtools::Optimizer was failing to save the module to the output |
| binary vector when all passes succeded without changes. |
| #629: The inline-entry-points-all optimization could generate invalidly |
| structured code when the inlined function had early returns. |
| #697: Optimizer's Instruction::ForEachInId method was skipping semantics-id |
| and scope-id. |
| #755: Inliner: Fix inlining of callee with single Return appearing before |
| the end of the function. |
| #776: Fix dead branch elimination in presence of complex but dead control |
| flow. |
| #781: SPV_KHR_variable_pointers allows duplicate pointer types |
| #782: Inliner: Fix remapping of non-label forward references in callee |
| #787: Inliner: Fix remapping of inlined entry block when called from |
| single block loop. |
| #790: Inliner: Fix remapping of inlined entry block when callee has |
| multiple returns. |
| |
| v2016.6 2016-12-13 |
| - Published the C++ interface for assembling, disassembling, validation, and |
| optimization. |
| - Support SPV_KHR_shader_draw_parameters in assembler, disassembler, parser. |
| - Validator: |
| - Add validator API accepting raw binary words |
| - Increased coverage: |
| - Checks "Data rules" in Universal Validation Rules, section 2.16.1 |
| - WIP: Universal Limits. |
| - The minimum mandated upper bounds are checked. |
| - TODO: Parameterize the validator to allow larger limits accepted by |
| a more than minimally capable implementation. |
| - OpSampledImage checks |
| - OpConstantComposite checks |
| - Id bound check |
| - Disasssembler: |
| - Generates friendly GLSL-based names for more builtin variables |
| - Generates friendly names for numeric OpConstant values |
| - Vendor tool info extracted from SPIR-V XML registry file. |
| - Fixes issues: |
| #429: Validator: Allow OpTypeForwardPointer and OpTypeStruct to reference |
| undefined IDs |
| #482: Validator: OpVariable initializer can be an ID of a module-scope variable |
| |
| v2016.5 2016-09-16 |
| - Support SPV_KHR_shader_ballot in assembler, disassembler, parser. |
| - Disassembler: Generate friendly names for built-in variables. |
| - Partial fixes: |
| #359: Add Emacs helper for automatically diassembling/assembling a SPIR-V |
| binary on file load/save. |
| - Fixes: |
| #414: Validator: Allow OpUndef for composite constants |
| #415: Validator: Phi can use its own value in some cases. |
| |
| v2016.4 2016-09-01 |
| - Relicensed under Apache 2.0 |
| - Add optimization passes (in API and spirv-opt command) |
| - Fold spec constants defined with OpSpecConstantOp and |
| OpSpecConstantComposite to normal constants with fixed value(s). |
| - Fixes issues: |
| #318: Relicensed under Apache 2.0 |
| |
| v2016.3 2016-08-24 |
| - Add target environment enums for OpenCL 2.1, OpenCL 2.2, |
| OpenGL 4.0, OpenGL 4.1, OpenGL 4.2, OpenGL 4.3, OpenGL 4.5. |
| - Add spirv-cfg, an experimental tool to dump the control flow graph |
| as a GraphiViz "dot" graph |
| - Add optimization pass: Eliminate dead constants. |
| - Add spirv-lesspipe.sh filter utility |
| - Fixes issues: |
| #288: Check def-use dominance rules for OpPhi (variable,parent) operands |
| #339: Allow OpUndef in types-constants-global-vars section, as required |
| by SPIR-V 1.0 Rev7, 1.1 Rev 3. |
| #340: Avoid race on mkdir during build |
| #365: Relax PointSize, ClipDistance, CullDistance capability check in all |
| environments not just Vulkan 1.0. |
| |
| v2016.2 2016-08-05 |
| - Validator is incomplete |
| - Checks ID use block is dominated by definition block |
| - Add optimization passes (in API and spirv-opt command) |
| - Strip debug info instructions |
| - Freeze spec constant to their default values |
| - Allow INotEqual as operation for OpSpecConstantOp |
| - Fixes bugs: |
| #270: validator: crash when continue construct is unreachable |
| #279: validator: infinite loop when analyzing some degenerate control |
| flow graphs |
| #286: validator: don't incorrectly generate def-use error for |
| (variable,parent) parameters to OpPhi |
| #290: disassembler: never generate bare % for an identifier |
| #295: validator: def-use dominance check should ignore unreachable uses |
| #276: validator: allow unreachable continue constructs |
| #297: validator: allow an unreachable block to branch to a reachable |
| merge block |
| |
| v2016.1 2016-07-19 |
| - Fix https://github.com/KhronosGroup/SPIRV-Tools/issues/261 |
| Turn off ClipDistance and CullDistance capability checks for Vulkan. |
| - The disassembler can emit friendly names based on debug info (OpName |
| instructions), and will infer somewhat friendly names for most types. |
| This is turned on by default for the spirv-dis command line tool. |
| - Updated to support SPIR-V 1.1 rev 2 |
| - Input StorageClass, Sampled1D capability, and SampledBuffer capability |
| do not require Shader capability anymore. |
| |
| v2016.0 2016-07-04 |
| |
| - Adds v<year>.<index> versioning, with "-dev" indicating |
| work in progress. The intent is to more easly report |
| and summarize functionality when SPIRV-Tools is incorporated |
| in downstream projects. |
| |
| - Summary of functionality (See the README.md for more): |
| - Supports SPIR-V 1.1 Rev 1 |
| - Supports SPIR-V 1.0 Rev 5 |
| - Supports GLSL std450 extended instructions 1.0 Rev 3 |
| - Supports OpenCL extended instructions 1.0 Rev 2 |
| - Assembler, disassembler are complete |
| - Supports floating point widths of 16, 32, 64 bits |
| - Supports integer widths up to 64 bits |
| - Validator is incomplete |
| - Checks capability requirements in most cases |
| - Checks module layout constraints |
| - Checks ID use-definition ordering constraints, |
| ignoring control flow |
| - Checks some control flow graph rules |
| - Optimizer is introduced, with few available transforms. |
| - Supported on Linux, OSX, Android, Windows |
| |
| - Fixes bugs: |
| - #143: OpenCL pow and pown arguments |