mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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380f36eae1
For the spec constants defined by OpSpecConstantOp and OpSpecContantComposite, if all of their operands are constants with determined values (normal constants whose values are fixed), calculate the correct values of the spec constants and re-define them as normal constants. In short, this pass replaces all the spec constants defined by OpSpecContantOp and OpSpecConstantComposite with normal constants when possible. So far not all valid operations of OpSpecConstantOp are supported, we have several constriction here: 1) Only 32-bit integer and boolean (both scalar and vector) are supported for any arithmetic operations. Integers in other width (like 64-bit) are not supported. 2) OpSConvert, OpFConvert, OpQuantizeToF16, and all the operations under Kernel capability, are not supported. 3) OpCompositeInsert is not supported. Note that this pass does not unify normal constants. This means it is possible to have new generatd constants defining the same values.
78 lines
3.3 KiB
Plaintext
78 lines
3.3 KiB
Plaintext
Revision history for SPIRV-Tools
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v2016.4-dev 2016-08-24
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- Add optimization passes (in API and spirv-opt command)
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- Fold spec constants defined with OpSpecConstantOp and
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OpSpecConstantComposite to normal constants with fixed value(s).
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v2016.3 2016-08-24
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- Add target environment enums for OpenCL 2.1, OpenCL 2.2,
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OpenGL 4.0, OpenGL 4.1, OpenGL 4.2, OpenGL 4.3, OpenGL 4.5.
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- Add spirv-cfg, an experimental tool to dump the control flow graph
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as a GraphiViz "dot" graph
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- Add optimization pass: Eliminate dead constants.
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- Add spirv-lesspipe.sh filter utility
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- Fixes issues:
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#288: Check def-use dominance rules for OpPhi (variable,parent) operands
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#339: Allow OpUndef in types-constants-global-vars section, as required
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by SPIR-V 1.0 Rev7, 1.1 Rev 3.
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#340: Avoid race on mkdir during build
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#365: Relax PointSize, ClipDistance, CullDistance capability check in all
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environments not just Vulkan 1.0.
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v2016.2 2016-08-05
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- Validator is incomplete
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- Checks ID use block is dominated by definition block
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- Add optimization passes (in API and spirv-opt command)
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- Strip debug info instructions
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- Freeze spec constant to their default values
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- Allow INotEqual as operation for OpSpecConstantOp
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- Fixes bugs:
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#270: validator: crash when continue construct is unreachable
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#279: validator: infinite loop when analyzing some degenerate control
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flow graphs
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#286: validator: don't incorrectly generate def-use error for
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(variable,parent) parameters to OpPhi
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#290: disassembler: never generate bare % for an identifier
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#295: validator: def-use dominance check should ignore unreachable uses
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#276: validator: allow unreachable continue constructs
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#297: validator: allow an unreachable block to branch to a reachable
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merge block
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v2016.1 2016-07-19
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- Fix https://github.com/KhronosGroup/SPIRV-Tools/issues/261
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Turn off ClipDistance and CullDistance capability checks for Vulkan.
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- The disassembler can emit friendly names based on debug info (OpName
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instructions), and will infer somewhat friendly names for most types.
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This is turned on by default for the spirv-dis command line tool.
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- Updated to support SPIR-V 1.1 rev 2
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- Input StorageClass, Sampled1D capability, and SampledBuffer capability
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do not require Shader capability anymore.
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v2016.0 2016-07-04
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- Adds v<year>.<index> versioning, with "-dev" indicating
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work in progress. The intent is to more easly report
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and summarize functionality when SPIRV-Tools is incorporated
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in downstream projects.
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- Summary of functionality (See the README.md for more):
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- Supports SPIR-V 1.1 Rev 1
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- Supports SPIR-V 1.0 Rev 5
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- Supports GLSL std450 extended instructions 1.0 Rev 3
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- Supports OpenCL extended instructions 1.0 Rev 2
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- Assembler, disassembler are complete
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- Supports floating point widths of 16, 32, 64 bits
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- Supports integer widths up to 64 bits
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- Validator is incomplete
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- Checks capability requirements in most cases
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- Checks module layout constraints
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- Checks ID use-definition ordering constraints,
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ignoring control flow
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- Checks some control flow graph rules
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- Optimizer is introduced, with few available transforms.
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- Supported on Linux, OSX, Android, Windows
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- Fixes bugs:
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- #143: OpenCL pow and pown arguments
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