[HLSL] implement tan intrinsic
#70082
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@llvm-beanz Can I have this one assigned to me? |
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@farzonl: Just create pull request and mention it on this page. |
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HLSL has a tan builtin defined here: https://learn.microsoft.com/en-us/windows/win32/direct3dhlsl/dx-graphics-hlsl-tan Currently HLSL builtins redirect to clang builtins. However there is no tan clang builtin today. This change implements llvm#70082 Changes: 1. Create an llvm tan intrinsic. 2. Then expose that intrinsic to hlsl.
farzonl
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This change is an implementation of #87367's investigation on supporting IEEE math operations as intrinsics. Which was discussed in this RFC: https://discourse.llvm.org/t/rfc-all-the-math-intrinsics/78294 Much of this change was following how G_FSIN and G_FCOS were used. Changes: - `llvm/docs/GlobalISel/GenericOpcode.rst` - Document the `G_FTAN` opcode - `llvm/docs/LangRef.rst` - Document the tan intrinsic - `llvm/include/llvm/Analysis/VecFuncs.def` - Associate the tan intrinsic as a vector function similar to the tanf libcall. - `llvm/include/llvm/CodeGen/BasicTTIImpl.h` - Map the tan intrinsic to `ISD::FTAN` - `llvm/include/llvm/CodeGen/ISDOpcodes.h` - Define ISD opcodes for `FTAN` and `STRICT_FTAN` - `llvm/include/llvm/IR/Intrinsics.td` - Create the tan intrinsic - `llvm/include/llvm/IR/RuntimeLibcalls.def` - Define tan libcall mappings - `llvm/include/llvm/Target/GenericOpcodes.td` - Define the `G_FTAN` Opcode - `llvm/include/llvm/Support/TargetOpcodes.def` - Create a `G_FTAN` Opcode handler - `llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td` - Map `G_FTAN` to `ftan` - `llvm/include/llvm/Target/TargetSelectionDAG.td` - Define `ftan`, `strict_ftan`, and `any_ftan` and map them to the ISD opcodes for `FTAN` and `STRICT_FTAN` - `llvm/lib/Analysis/VectorUtils.cpp` - Associate the tan intrinsic as a vector intrinsic - `llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp` Map the tan intrinsic to `G_FTAN` Opcode - `llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp` - Add `G_FTAN` to the list of floating point math operations also associate `G_FTAN` with the `TAN_F` runtime lib. - `llvm/lib/CodeGen/GlobalISel/Utils.cpp` - More floating point math operation common behaviors. - llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp - List the function expansion operations for `FTAN` and `STRICT_FTAN`. Also define both opcodes in `PromoteNode`. - `llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp` - More `FTAN` and `STRICT_FTAN` handling in the legalizer - `llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h` - Define `SoftenFloatRes_FTAN` and `ExpandFloatRes_FTAN`. - `llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp` - Define `FTAN` as a legal vector operation. - `llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp` - Define `FTAN` as a legal vector operation. - `llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp` - define tan as an intrinsic that doesn't return NaN. - `llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp` Map `LibFunc_tan`, `LibFunc_tanf`, and `LibFunc_tanl` to `ISD::FTAN`. Map `Intrinsic::tan` to `ISD::FTAN` and add selection dag handling for `Intrinsic::tan`. - `llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp` - Define `ftan` and `strict_ftan` names for the equivalent ISD opcodes. - `llvm/lib/CodeGen/TargetLoweringBase.cpp` -Define a Tan128 libcall and ISD::FTAN as a target lowering action. - `llvm/lib/Target/X86/X86ISelLowering.cpp` - Add x86_64 lowering for tan intrinsic resolves #70082
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Implement HLSL
tanintrinsic:https://learn.microsoft.com/en-us/windows/win32/direct3dhlsl/dx-graphics-hlsl-tan
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