Release v2026.1

• General
  • spirv-tools: Fix infinite recursion in SmallVector::operator== on MSVC (#6470)
  • Add support for SPV_NV_push_constant_bank (#6507)
  • Enable UseMultiToolTask for msbuild performance (#6472)
  • Fix asan error in stack usage (#6434)
  • Fix crash in array length validation (#6500)
  • Fix infinite loop in logical pointer validation (#6450)
  • Implement SPV_EXT_descriptor_heap (#6503)
• Optimizer
  • Adding constant folding for NMin, NMax and NClamp (#6433)
  • Also remap DebugScope instructions (#6501)
  • Change ValueNumber to use spivOpcodeIsCommutativeBinaryOperator (#6431)
  • Extending factoring folding rules to support subtraction (#6432)
  • Extending negation folding rules (#6444)
  • Folding Rules For Common Comparisons (#6437)
  • Folding rules for negation and cancellation (#6452)
  • Harden CFGCleanupPass against ID overflow (#6439)
  • Harden CombineAccessChainsPass against ID overflow (#6440)
  • Harden CopyPropagateArraysPass against ID overflow (#6441)
  • Remove lingering debug-scopes. (#6416)
  • add adce test for debug declare (#6462)
  • fix adce when ns debug info present (#6217) (#6420)
• Validator
  • Handle OpTypeVectorIdEXT in validate_interfaces.cpp (#6492)
  • Validate SPV_EXT_long_vector (#6471)
  • Validate floats/int Image Operands are 32-bit (#6477)
  • Add Mesh Shading Read Output check (#6426)
  • Add Mesh/Task to check for LocalSize (#6459)
  • Add missing LOD non-zero MS (#6496)
  • Add width to IsFloatScalarType (#6489)
  • Better atomic storage class message (#6425)
  • Better error message when types are the same (#6427)
  • Check Mesh Topology builtin by entry point (#6457)
  • Check for CoopMat scope (#6442)
  • Combine Image Coordinate checks (#6494)
  • Fix crash with bad OpUntypedArrayLengthKHR (#6493)
  • Label VUID 10823 (#6488)
  • Provide RuntimeDescriptorArray hint in message (#6448)
  • Use new StorageClassToString util (#6460)
  • Use validation_state.cpp helpers (#6478)
  • Validate ImageQuerySizeLod is 32-bit (#6479)
  • Validate Mesh Shader output are an array (#6449)
  • add missing relational ops to InvalidTypePass (#6495)
• Diff
  • diff: Match OpExtInst in debug and types/values sections (#6430)

Release v2025.5

• General
• Validator
• Optimizer
  • spirv-opt: Add a folding rule for OpBitReverse and fix OpBitCast to support lower to higher bit conversions. (#6321)
  • spirv-opt: Add basic support for graphs (#6351)
  • spirv-opt: Adding folding rules for bitwise and (#6361)
  • spirv-opt: Adding normal form to ValueNumber calculation (#6371)
  • spirv-opt: Cache IsReadOnlyLoad in ValueNumberTable (#6385)
  • spirv-opt: Clone decorations when unrolling loops (#6373)
  • spirv-opt: Correct ADCE bug keeping dead DebugValue Value operands (#6368)
  • spirv-opt: Fix constant folding for OpBitcast on signed integers. (#6378)
  • spirv-opt: Fix id overflow in ConvertToSampledImage (#6339)
  • spirv-opt: Handle ID overflow in AggressiveDCEPass (#6366)
  • spirv-opt: Handle ID overflow in SplitCombinedImageSamplerPass (#6406)
  • spirv-opt: Handle id overflow in CCP and constant folding (#6367)
  • spirv-opt: Handle id overflow in MergeReturnPass (#6340)
  • spirv-opt: Handle id overflow in amd_ext_to_khr (#6403)
  • Add SPV_KHR_maximal_reconvergence to the allowlist (#6372)
  • Adding folding rules for commutive bitwise operations (xor/or/and). (#6358)
  • [OPT] Move definition of Pass::Status to Utils (#6402)
• Validator:
  • spirv-val: Add LocalInvocationIndex checks (#6395)
  • spirv-val: Add validation for SPV_KHR_fma (#6388)
  • spirv-val: Break up the 3000 line ValidateExtInst function (#6364)
  • spirv-val: Fix VUID churn for 10685 (#6389)
  • spirv-val: Improve Explicit Layout message (#6331)
  • spirv-val: Use spvOpcodeString consistently (#6393)
  • Relax validation rule for DebugGlobalVariable variable (#6382)
  • Validate SPV_EXT_shader_64bit_indexing (#6376)
  • Validate logical pointer restrictions (#6240)
  • [tools/val] fix u8str for real this time (#6341)
  • Add VK_EXT_shader_uniform_buffer_unsized_array (#6386)
• Assembler
  • Add as/dis support for Arm.MotionEngine.100 extended instruction set (#6284)
  • spirv-as: fix command line for stdin as input (#6398)

v2025.4

Prepare release v2025.4 (#6335)

v2025.3

Prepare release v2025.3 (#6192)

V2025.2

[OPT] Don't fold n % 1.0 (#6100)

If values are not whole number, then the result is not 0. For example,
`(1.5 % 1.0) == 0.5`.

Fixes #6097

Release v2025.1

• General
  • diff: Fix crash in OpString matching (#5988)
  • Add SPV_AMDX_shader_enqueue version 2 support (#5838)
  • add support for SPV_INTEL_subgroup_matrix_multiply_accumulate (#5928)
  • update cmake_minimum_required to 3.22.1 (#5925)
  • Add OpImageSampleFootprintNV to IsAllowedSampledImageOperand (#5914)
  • assembler: ensure progress when seeking the version string (#5910)
• Optimizer
  • opt: keep all OpSource instructions (#5901)
  • [opt] Fix bug opt::InstructionBuilder::AddVariable (#6007)
  • [OPT] Add SPV_KHR_ray_tracing to allow list (#5941)
  • opt: keep all OpSource instructions (#5901)
• Validator
  • spirv-val: Add AllowVulkan32BitBitwise option (#6001)
  • Fix untyped pointer comparison validation (#6004)
  • spirv-val: Update VUIDs for 308 header (#5990)
  • spirv-val: fix env parsing for vk1.1spv1.4 (#5985)
  • Add validation for SPV_NV_linear_swept_spheres. (#5975)
  • Add validation SPV_NV_cluster_acceleration_structure. (#5974)
  • Improve the instruction diagnostic for some access chain errors (#5978)
  • Update physical storage buffer validation to match SPIR-V 1.6.5 (#5977)
  • Validate SPV_NV_cooperative_vector (#5972)
  • Fix layout checks with untyped pointers (#5970)
  • spirv-val: Update mislabeled VUIDs (#5964)
  • More explicit layout validation (#5958)
  • spirv-val: Add VK_KHR_maintenance8 support (#5951)
  • Add EXT_mesh_shader validation support (#5640)
  • spirv-val: Remove OpenCL ivec3 req (#5940)
  • spirv-val: Validate zero product workgroup size (#5407)
  • Relax DebugLine validation (#5916)
• Linker
  • linker: remove LinkOnceODR decorations when linking executables (#5979)
  • fix: handle LinkOnceODR correctly (#5938)

Release v2024.4

• General
  • Add FPEncoding operand type. (#5726)
  • Support SPV_KHR_untyped_pointers (#5736)
  • add support for SPV_INTEL_global_variable_host_access (#5786)
  • Add support for SPV_KHR_compute_shader_derivative (#5817)
  • Accept hex representation as binary input (#5870)
  • Vulkan 1.4 support (#5899)
• Optimizer
  • Add knowledge of cooperative matrices (#5720)
  • Add struct-packing pass and unit test. (#5778)
• Validator
  • Validate presence of Stride operand to OpCooperativeMatrix{Load,Store}KHR (#5777)
  • Update sampled image validation (#5789)
  • Disallow stores according to VUID 06924 (#5368)
  • Add validation for SPV_NV_tensor_addressing and SPV_NV_cooperative_matrix2 (#5865)
• Linker
  • allow linking functions with different pointer arguments (#5534)

Release v2024.3

• General
• Optimizer
  • Do not fold mul and adds to generate fmas (#5682)
  • add OpExtInst forward ref fixup pass (#5708)
• Validator
  • Separate Location check for tess patch (#5654)
  • Validate MemoryAccessMask of OpCooperativeMatrixStoreKHR (#5668)
  • OpSampledImage extra validation (#5695)
  • add support for OpExtInstWithForwardRefs (#5698)A
• Disassembler
  • add decorations to comments (#5675)
  • Add --nested-indent and --reorder-blocks (#5671)

Release v2024.2

• General
  • Add SPIRV_TOOLS_EXPORT to public C++ API (#5591)
  • Use bazel 7 and bzlmod (#5601)
• Optimizer
  • opt: add GroupNonUniformPartitionedNV capability to trim pass (#5648)
  • Fix rebuilding types with circular references. (#5637)
  • Add AliasedPointer decoration (#5635)
  • add support for vulkan-shader-profiler external passes (#5512)
• Validator
  • A fix to support of SPV_QCOM_image_processing2 (#5646)
  • spirv-val: Add Vulkan check for Rect Dim in OpTypeImage (#5644)
  • Validate duplicate decorations and execution modes (#5641)
  • Validator: Support SPV_NV_raw_access_chains (#5568)

Release v2024.1

IMPORTANT:
This release is the last one we will publish here until further notice. The official SDK releases can be found on LunarG's website. They offer 2 options: the prebuilt & tested binaries, or a list of known-good commits to build your own release binaries.

• General
  • Add tooling support for SPV_KHR_maximal_reconvergence (#5542)
  • Add support for SPV_KHR_float_controls2 (#5543)
  • SPV_KHR_quad_control (#5547)
  • Fold 64-bit int operations (#5561)
  • update image enum tests to remove Kernel capability (#5562)
  • Support operand kind for SPV_INTEL_maximum_registers (#5580)
  • SPV_NV_shader_atomic_fp16_vector (#5581)
  • Support for SPV_QCOM_image_processing2 (#5582)
  • Fix access chain struct checks (#5592)
• Optimizer
  • opt: add Int16 and Float16 to capability trim pass (#5519)
  • Add preserver-interface option to spirv-opt (#5524)
  • spirv-opt: Fix OpCompositeExtract relaxation with struct operands (#5536)
  • opt: Add VulkanMemoryModelDeviceScope to trim (#5544)
  • opt: Add TrimCapabilities pass to spirv-opt tool (#5545)
  • Add modify-maximal-reconvergence to spirv-opt help (#5546)
  • opt: add SPV_EXT_mesh_shader to opt allowlist (#5551)
  • opt: Add OpEntryPoint to DescriptorScalarReplacement pass (#5553)
  • opt: prevent meld to merge block with MaximalReconvergence (#5557)
  • [OPT] Use new instruction folder for for all opcodes in spec consti folding (#5569)
  • [OPT] Identify arrays with unknown length in copy prop arrays (#5570)
  • [OPT] Add removed unused interface var pass to legalization passes (#5579)
• Validator
  • spirv-val: Re-enable OpControlBarrier VU (#5527)
  • spirv-val: Add Mesh Primitive Built-In validaiton (#5529)
  • spirv-val: Validate PhysicalStorageBuffer Stage Interface (#5539)
  • spirv-val: Multiple interface var with same SC (#5528)
  • spirv-val: Revert Validate PhysicalStorageBuffer Stage Interface (#5575)
  • spirv-val: Make Constant evaluation consistent (#5587)