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llvm-project/llvm/lib/CodeGen/SelectionDAG
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Craig Topper 6430430958 [TableGen] Use sign rotated VBR for OPC_EmitInteger. 
This allows for a much more efficient encoding for small negative
numbers by storing the sign bit first and negating the rest of
the bits. This was already being used for OPC_CheckInteger.

For every in tree target this affects, the table got smaller.
R600GenDAGISel.inc saw the largest reduction of 7K.

I did have to add a new opcode for StringIntegers used for
register class ids and subregister indices since we don't have the
integer value to encode. The enum name is emitted directly into
the table. Previously assumed the enum would expand to a positive
7-bit number. We might be able to just shift that right by 1 and
assume it is a positive 6 bit number, but that will need more
investigation.
 		2021-05-02 12:40:44 -07:00
..
CMakeLists.txt llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
DAGCombiner.cpp [RISCV] Enable SPLAT_VECTOR for fixed vXi64 types on RV32. 2021-04-29 08:20:09 -07:00
FastISel.cpp Revert "Allow invokable sub-classes of IntrinsicInst" 2021-04-20 15:38:38 -07:00
FunctionLoweringInfo.cpp [NFC] Wisely nest dyn_cast in FunctionLoweringInfo 2021-03-16 10:22:44 +01:00
InstrEmitter.cpp [DebugInfo] Emit DBG_VALUE_LIST from ISel 2021-03-09 12:17:39 +00:00
InstrEmitter.h [DebugInfo] Emit DBG_VALUE_LIST from ISel 2021-03-09 12:17:39 +00:00
LegalizeDAG.cpp [SelectionDAG][AArch64][SVE] Perform SETCC condition legalization in LegalizeVectorOps 2021-03-29 15:32:25 +01:00
LegalizeFloatTypes.cpp Revert "[CodeGen][ARM] Implement atomicrmw as pseudo operations at -O0" 2021-04-30 16:53:14 +01:00
LegalizeIntegerTypes.cpp [SelectionDAG] Use a VTSDNode to store the saturation width for FP_TO_SINT_SAT/FP_TO_UINT_SAT 2021-04-27 14:38:42 -07:00
LegalizeTypes.cpp [SelectionDAG] Use range-based for loops (NFC) 2021-02-09 22:14:30 -08:00
LegalizeTypes.h Revert "[CodeGen][ARM] Implement atomicrmw as pseudo operations at -O0" 2021-04-30 16:53:14 +01:00
LegalizeTypesGeneric.cpp [CodeGen] Refactor getMemBasePlusOffset & getObjectPtrOffset to accept a TypeSize 2020-08-11 12:17:10 +01:00
LegalizeVectorOps.cpp [SelectionDAG][AArch64][SVE] Perform SETCC condition legalization in LegalizeVectorOps 2021-03-29 15:32:25 +01:00
LegalizeVectorTypes.cpp [DAGCombiner] Allow operand of step_vector to be negative. 2021-04-22 20:58:03 +08:00
ResourcePriorityQueue.cpp ResourcePriorityQueue.h - reduce unnecessary includes to forward declarations. NFC. 2020-05-26 19:22:14 +01:00
SDNodeDbgValue.h Reapply "[DebugInfo] Correctly track SDNode dependencies for list debug values" 2021-04-12 12:51:29 +01:00
ScheduleDAGFast.cpp [DebugInstrRef] Create DBG_INSTR_REFs in SelectionDAG 2020-10-14 14:24:08 +01:00
ScheduleDAGRRList.cpp Revert "[NFC][ScheduleDAG] Remove unused EntrySU SUnit" 2020-09-21 13:33:05 +02:00
ScheduleDAGSDNodes.cpp [DebugInfo] Emit DBG_VALUE_LIST from ISel 2021-03-09 12:17:39 +00:00
ScheduleDAGSDNodes.h
…
ScheduleDAGVLIW.cpp [SelectionDAG] Use range-based for loops (NFC) 2021-02-09 22:14:30 -08:00
SelectionDAG.cpp [SelectionDAG] Use a VTSDNode to store the saturation width for FP_TO_SINT_SAT/FP_TO_UINT_SAT 2021-04-27 14:38:42 -07:00
SelectionDAGAddressAnalysis.cpp [SelectionDAG] Avoid aliasing analysis if the object size is unknown. 2020-11-25 06:13:37 +08:00
SelectionDAGBuilder.cpp Revert "Re-reapply "[DebugInfo] Use variadic debug values to salvage BinOps and GEP instrs with non-const operands"" 2021-04-30 20:23:21 -07:00
SelectionDAGBuilder.h [IR][SVE] Add new llvm.experimental.stepvector intrinsic 2021-03-23 10:43:35 +00:00
SelectionDAGDumper.cpp [IR][SVE] Add new llvm.experimental.stepvector intrinsic 2021-03-23 10:43:35 +00:00
SelectionDAGISel.cpp [TableGen] Use sign rotated VBR for OPC_EmitInteger. 2021-05-02 12:40:44 -07:00
SelectionDAGPrinter.cpp [SelectionDAG] Drop unnecessary const from a return type (NFC) 2021-02-07 09:49:33 -08:00
SelectionDAGTargetInfo.cpp
…
StatepointLowering.cpp [Statepoint Lowering] Allow other than N byte sized types in deopt bundle 2021-04-07 17:48:31 +07:00
StatepointLowering.h More precisely type code used for gc.relocate assertions [nfc] 2021-04-06 11:27:36 -07:00
TargetLowering.cpp [SelectionDAG] Use a VTSDNode to store the saturation width for FP_TO_SINT_SAT/FP_TO_UINT_SAT 2021-04-27 14:38:42 -07:00