igc-1.0.4154

Fixed Issues / Improvements

• Add implementation for proper half precision using mul and mad instructions.
• Perform read-modify-write only for spills inside divergent control flow.
• Implement emulation of 64b mov.
• Run Emu64OpsPass preprocessor also if DataLayout contains 64bit global or local pointers.
• Better heuristic for A64WA.
• Check for dst/src overlap for IEEE FP64 macros.
• Enable SWSBDepReduction option by default.
• Minor fixes and improvements.

Ubuntu 18.04 binary packages for LLVM10/Clang10 are included.

igc-1.0.4111

Fixed Issues / Improvements

• Removed splitVariables pass as it should be subsumed by the split4GRFVars pass.
• When stack is used, make sure the spill/fill temp is at least one GRF.
• Fixed offset calculation for indirect function calls.
• Added optimization stats.
• Aligned caller-save and callee-save frame offset to 64 byte.
• Moved updateDebugLoc() function into help.hpp to avoid static definition of this function in several .cpp files.
• Fixed non-uniform calls with return on stack.
• Added vISA verifier check for input that straddles GRF boundary.
• Refactored hard-coding register size in a few legalization checks.
• Removed indentation from namespaces blocks.
• Removed m_ShaderMode from PS codegen, as its base already has it.
• Renamed m_ShaderMode -> m_ShaderDisdpatchMode in visa emitter.
• Use int copy instead of float copy during spill code generation.
• vISA syntax enables more identifiers (VAR), which used to be lexical keywords such as "byte", "word"
• Fix WaDisableSendSrcDstOverlap() for instructions in divergent control flow.
• Fix -timestats issue so VISA SPILL is not counted twice.
• Updated IGA.
• Unpaired Op and Subfunction. Now there are Op::MATH and subfunction MathFC::INV, instead of Op::MATH_INV.
• Enabled color syntax in terminal output of IGAExe.
• Improvements to diagnostics in parser.
• Moved some OpSpec methods to cpp file to make header interface clearer.
• Old ld/st syntax removed.
• Changes to vISA IGA adapter to use new IR.
• Other vISA IGA adapter refactoring and improvements.
• Fixed file path in .asm dumps (missing slash between directory and file).
• Fixed a leak from CreateSystemThreadKernel.
• Added capturing some statistics: loop count, send instruction count, spill/fill operation count and estimated cycle count regardless of dump settings.
• Added fix in variable split to detect multiple definitions correctly.
• Fixed gtpin header with explicit padding.
• Removeed alignment requirement for definitions in non-divergent BBs.
• Refactored GenIntrinsics to include comments in files and remove old csv comment file.
• Dst/src overlap bug fix.
• Dumping SPIRV files in clLinkProgram scenario.
• Emit top line number instead of zero.

Ubuntu 18.04 binary packages for LLVM10/Clang10 are included.

igc-1.0.4062

Fixed Issues / Improvements

• Vary private memory stack size based on SIMD width.
• Make register pressure estimate more accurate by considering alignment for <1GRF variables.
• Minor fixes and improvements.

Ubuntu 18.04 binary packages for LLVM10/Clang10 are included.

igc-1.0.4053

Fixed Issues / Improvements

• Add option for the first fit window in local RA
• Plumbs LLVM names into vISA to improve debugging and readability of both vISA and GEN assembly
• Add WriteOnly Attribute for Intrinsic generation
• Make pre-defined FE SP/BP 64-bits by default
• Extended Math instruction is given a little higher weight than other instruction
• Fix build with system LLVM: do not hardcode LLVM library path
• Fixed non-uniform call code gen
• Fix a bug in reducing maximun IGC stack size from 8K to 1K
• ZEBinWriter: Refine TargetFlags definition for ELF header
• Set buffer size per inline buffer. Multiple inline buffers can be defined
• Removing the dst/src overlap checking after augmentation
• Rebuild physical register pool when kernel parameters are updated.
• Add ZEBinWriter for building ZE binary object
• Remove redundant sampler header movs
• Avoid hard-coding CS local_id alignment.
• Reduce IGC stack size from 8K to 1K when there's stack call
• Fix for mad_sat using long type
• Update max supported spirv version in SPIRV Translator
• Change more instruction creation to use createMov/createBinOp wapper.
• Includes some minor fixes for SWSB and send decoding
• Use Target attribute whenever it is possible, rather than target option.
• Optimization for inline constant/global data buffers.
• Fix the bug in the respond length cal for SVM block read.
• Fixing Debug Info generation for IndirectlyCalled functions.

Ubuntu 18.04 binary packages for LLVM10/Clang10 are included.

igc-1.0.3977

Fixed Issues / Improvements

• Added AnnotateUniformAllocas pass.
• Added handling of StructType in metadata.
• Improvements to ShaderDumpEnable asm output; specifically the input arguments (added types).
• Refactored fence before EOT and handle function calls.
• Compute natural loops after modifying CFG.
• Copying struct by element instead of by byte.
• Disabling MTP when stack calls are present.
• Removed an obsolete W/A.
• Extended LVN; fixed a memory leak.
• Removed hard-coding message's and declare's size for pixel interpolator message.
• Removed hard-coding SIMD size for render target's write with stencil.
• Removed hard-coding R0 and R1 sizes in payload.
• Replaced isInSimdFlow() with isDivergent() with a new function isAllLaneActive().
• Made Inst->isBackward() return true for while loops.
• Added GPTin build options.
• Marked CVariable fields "const".
• Other minor changes and improvements.

Ubuntu 18.04 binary packages for LLVM10/Clang10 are included.

igc-1.0.3951

Fixed Issues / Improvements

• Fixed performance regression due to ConstantBufferCount.
• Add GTPin flags to support L0 driver path.
• Fixed struct return uniform to non-uniform copy.
• Indirect call support in SWSB.
• Add AnnotateUniformAllocas pass.
• Extend LVN.
• Minor fixes and improvements.

Ubuntu 18.04 binary packages for LLVM10/Clang10 are included.

igc-1.0.3899

Fixed Issues / Improvements

• Fix for setting Src1.Length in IGA IR.
• Small refactor to render taget write code generation.
• Avoid splitting RetVal variable into two.
• Not limiting the loop unroll to small loops for high register pressure shaders if constant folding
• Handling the math intrinsics in FindInterestingConstants pass.
• Improve MergeURBWrites to also merge URBWrite instructions with dynamic URB offsets.
• Add support to dump GRF usage chart per instruction. Fix some bugs with variable splitting.
• Add GTPin flags to support L0 driver path
• relax ACC substitution constraints
• Improve ConstantBufferCount estimate
• Merge from IGA; includes new platforms and some IGA IR refactoring.
• Fix to handle a infinite loop stuck issue leading to compilation hang.
• Using attribute SpillMemOffset instead of option -spillMemOffset, so that it is encoded in isa binary.
• Refactor to avoid hard-coded simd size for vertex shader compilation.

Ubuntu 18.04 binary packages for LLVM10/Clang10 are included.

igc-1.0.3864

Fixed Issues / Improvements

• Fix get_sub_group_id builtin handling
• Remove unused GTPin vISA option
• Further refactoring of vISA attributes
• vISA will use dispatch SIMD size from an attribute instead of scanning all instructions
• Fix to handle a infinite loop stuck issue leading to compilation hang
• Fix the performance regression caused by scalar suppression
• Refactor pixel shader code gen to avoid hard-coding SIMD size and GRF size
• Fix to SIMD16 shuffle down
• Add possibility to control partial component packing via shader metadata
• Fix sub_group_clustered_reduce_* on 64-bit types
• Extend LVN to detect more instructions
• Use attributes to get attributes names instead of hard-coding them wherever possible
• Added SimdSize kernel attribute (not used yet)
• Added sin/cos to sinpi/cospi optimization to improve performance
• Fixed the BCR static check
• Added getPlatform() function to IR_Builder and G4_INST
• Fixes in L0 tests
• Added vISA documentation
• Minor cleanup for G4_Declare
• Fixes for getAttributeID (searching all attributes instead of only kernels')
• Fix for subgroup_scan_exclusive for char and short
• Updated fcl interface to latest
• Added include guards, needed overrides, and some miscellaneous path fixes
• Added a debug knob to change the max block push constants threshold.
• Other minor bugfixes and improvements

Ubuntu 18.04 binary packages for LLVM10/Clang10 are included.

igc-1.0.3826

Fixed Issues / Improvements

• Indirect call support in SWSB.
• Avoid hard-coded SIMD size checks for sampler payload coalescing.
• Enable EnableBCR and VISAOptions flags for linux release.
• Extend LVN to detect more instructions.
• Fix a break in subroutine returns.
• Avoid hard-coding execution size for vISA sampler messages.
• Emu64bit support for stack/indirect function calls.
• Minor fixes and improvements.

Ubuntu 18.04 binary packages for LLVM10/Clang10 are included.

igc-1.0.3771

Fixed issues/improvements:

• Fix send payload coalescing when a source is larger than two GRFs.
• Group instructions together for performance.
• Check dangling constant users for Function/Global symbols, before iterating through the user list.
• Add the debug flags to limit number of constants to fold.
• Fix 64-bit multiplication emulation where the result is one of the factors.
• Fix translation of operation parameter of OpGroupNonUniformBallotBitCount.
• Verification pass for explicit variable split phase. Pass can be enabled using -verifysplit switch.
• Enable integer mad by default for OCL.
• Support function symbols used by Constants. MemOpt may combine multiple function address symbols into a single constant for load/store. Updating codegen to support this.
• Optimize indirect calls with function groups using LLVM !callees metadata. Fixed a few existing bugs, and removed the pass from OptimizeIR.
• Checking in FindInterestingConstants changes to return constants in sorted order.
• Fix translation of BallotBitCOunt in SPIRV Reader.
• Skip bank conflict hint for split variables to increase coalescing chances.
• Fix ASR offset for signed extend 32-bit value to 64-bit.
• Fix incorrect specialization constants reuse by subsequent SPIR-V modules.
• Skip trivial RA when variable split is done to avoid generating extra movs.
• Fix specialization constants for linking path.
• Enable explicit variable splitting and disable existing local split.
• Promote to stateful if GEP is not existed and address type is DW-aligned.
• Bail out from mad optimization if one of the operand is INF.
• And other fixes and performance improvements.

Ubuntu 18.04 binary packages for LLVM10/Clang10 are included.