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intel-graphics-compiler/visa
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Ashar, Pratik J cbc76e845b Pre-assign GRF to spillHeader in fail safe RA iteration 
spillHeader may be used to store offset for spill/fill instruction. It
must be infinite spill cost variable. If spillHeader gets assigned to a
register that causes fragmentation, then it could cause previously
spilled variables to not get an allocation in fail safe RA iteration.

With this change, we find first GRF candidate that can be assigned to
spillHeader. This way, we avoid fragmenting free GRF space.

(cherry picked from commit e1467856fe)
2025-10-07 12:00:48 +02:00
..
CISA_ld
…
FC_linker
Synchronization between branches
2025-05-08 16:12:06 +02:00
iga
Apply rule-of-three
2025-08-20 11:34:09 +02:00
include
Add Pre-RA register pressure stat
2025-08-27 18:09:24 +02:00
LocalScheduler
Add subtree selection heuristic to preRA scheduler
2025-09-18 07:11:17 +02:00
Passes
Move the S0 indirect send generation before post-RA
2025-09-09 01:46:13 +02:00
RA_Validation
Validation Tool Fixes
2023-08-14 08:19:52 +02:00
VisaToG4
Fix the assertion of "operand with mme must be GRF-aligned"
2025-08-11 14:31:36 +02:00
Arena.cpp
…
Arena.h
Conform to rule of three
2023-12-01 03:33:59 -05:00
Assertions.cpp
(NFC) Fix sporadic build warnings in LLVM headers
2023-06-13 01:06:21 +02:00
Assertions.h
…
Attributes.cpp
…
Attributes.hpp
Apply rule-of-three
2025-08-20 11:34:09 +02:00
BinaryEncoding.cpp
…
BinaryEncoding.h
IGC refactors and bugfixes part 2/2
2023-12-22 15:57:13 +01:00
BinaryEncodingCNL.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
BinaryEncodingCNL.h
IGC refactors and bugfixes part 2/2
2023-12-22 15:57:13 +01:00
BinaryEncodingIGA.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
BinaryEncodingIGA.h
…
BitSet.cpp
Refactor null pointer checks, add asserts
2023-07-20 17:09:04 +02:00
BitSet.h
Apply rule-of-three
2025-08-20 11:34:09 +02:00
BuildCISAIR.h
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
BuildCISAIRImpl.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
BuildIR.h
Updated the scalar regsiter assginment in indirect send
2025-09-02 20:03:12 +02:00
BuildIRImpl.cpp
Updated the scalar regsiter assginment in indirect send
2025-09-02 20:03:12 +02:00
ByteCodeReaderNG.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
CFGStructurizer.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
CFGStructurizer.h
…
CISA.l
vISA, IGA: clean-up gcc warnings
2025-07-04 01:20:54 +02:00
CISA.y
Fix issue that align=1 can not be parsed correctly
2025-07-10 22:41:57 +02:00
CMakeLists.txt
Add PTL support
2025-01-21 17:25:58 +01:00
Common_BinaryEncoding.cpp
…
Common_BinaryEncoding.h
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
Common_GEN.h
[Autobackout][FunctionalRegression]Revert of change: a37fcecccd: Use sync to wait the commit of fence instruction
2024-06-22 01:52:25 +02:00
Common_ISA_framework.cpp
Change name ShaderDumpFilter to ShaderDumpRegexFilter
2025-04-08 20:29:31 +02:00
Common_ISA_framework.h
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
Common_ISA_util.cpp
Add getSignedType() function
2025-03-31 20:59:38 +02:00
Common_ISA_util.h
vISA: Add OV option to LSC instructions
2025-04-24 20:01:58 +02:00
Common_ISA.cpp
vISA: support platforms ARL and XE2
2023-11-16 15:35:14 -05:00
Common_ISA.h
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
common.cpp
Add support for Panther Lake devices
2024-12-20 16:56:00 +01:00
common.h
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
DebugInfo.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
DebugInfo.h
Add intrinsic cache to KernelDebugInfo
2024-12-18 16:19:46 +01:00
EmuInt64Add.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
EmuInt64Add.h
Delay emulated int64 scalar add generation to vISA
2023-07-21 11:51:50 +02:00
FastSparseBitVector.h
Use llvm::SparseBitVector on Linux
2024-07-02 11:17:45 +02:00
FlagSpillCleanup.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
FlagSpillCleanup.h
(NFC) Move flag spill cleanup to its own file
2023-07-17 18:33:58 +02:00
FlowGraph.cpp
Remove deadcode, init members
2025-08-08 10:49:38 +02:00
FlowGraph.h
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
FrequencyInfo.cpp
[LLVM16] Replacing getInstList calls(), ZeroBehavior drop, getUserCost, setUndef, array_lengthof, GreatestCommonDivisor64
2024-09-27 09:09:47 +02:00
FrequencyInfo.h
Apply rule-of-three
2025-08-20 11:34:09 +02:00
Functions.cmake
…
G4_BB.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
G4_BB.hpp
Refactor code so that each G4_BB in FlowGraph points to
2024-07-15 06:25:08 +02:00
G4_Declare.h
gather send optimization
2025-03-21 07:00:15 +01:00
G4_Instruction.h
rename G4Instruction to G4_Instruction
2023-10-24 17:36:49 -04:00
G4_IR.cpp
gather send update
2025-07-19 10:40:25 +02:00
G4_IR.hpp
gather send update
2025-07-19 10:40:25 +02:00
G4_Kernel.cpp
Relax condition for spill threshol
2025-09-09 15:12:45 +02:00
G4_Kernel.hpp
Improve spill threshold handling
2025-08-12 23:08:27 +02:00
G4_MsgOpDefs.hpp
Fix sample_d_c and sample_d_c_mlod sampler message type
2025-01-28 18:13:40 +01:00
G4_Opcode.h
Add PTL support
2025-01-17 10:56:05 +01:00
G4_Operand.h
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
G4_Register.h
Add PTL support
2025-01-17 10:56:05 +01:00
G4_SendDescs.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
G4_SendDescs.hpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
G4_Verifier.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
G4_Verifier.hpp
Multiple Coverity Fixes
2023-12-27 12:19:29 +01:00
GraphColor.cpp
Pre-assign GRF to spillHeader in fail safe RA iteration
2025-10-07 12:00:48 +02:00
GraphColor.h
Pre-assign GRF to spillHeader in fail safe RA iteration
2025-10-07 12:00:48 +02:00
HWCaps.inc
Relax byte destination restrictions
2025-07-10 16:44:12 +02:00
HWConformity.cpp
Don't swap src operands if the swapping causes invalid datetype combination for mad instruction
2025-08-29 03:22:04 +02:00
HWConformity.h
Fix immediate operand issue in bfn instruction
2025-05-31 01:45:39 +02:00
ifcvt.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
ifcvt.h
…
IGfxHwEuIsaCNL.h
…
IGfxHwEuIsaICL.h
…
IncrementalRA.cpp
Implement fast sparse bitvector class
2023-09-04 05:46:21 +02:00
InstSplit.cpp
Fix register regioning restriction for SIMD32 instruction with 64b datatype
2024-10-19 00:23:53 +02:00
InstSplit.h
…
IsaDescription.cpp
Remove ISA_RESERVED_9D opcode from vISA
2025-03-21 18:13:17 +01:00
IsaDescription.h
Add PTL support
2025-01-17 10:56:05 +01:00
IsaDisassembly.cpp
Rename d16c32 to d16u32
2025-05-30 22:28:55 +02:00
IsaDisassembly.h
Remove .parameter directive from vISA assembly.
2023-09-07 20:14:23 +02:00
IsaVerification.cpp
Fix the access bound check issue of src operand for madw instruction
2025-08-14 22:58:17 +02:00
IsaVerification.h
[LLVM16] Replacing llvm::Optional, llvm::None, hasValue() and getValue() calls
2024-09-20 12:12:54 +02:00
JitterDataStruct.cpp
Add Pre-RA register pressure stat
2025-08-27 18:09:24 +02:00
KernelCost.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
KernelCost.hpp
refactor kernel cost model
2024-09-08 06:59:10 +02:00
LinearScanRA.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
LinearScanRA.h
Fix memory corruption in LinearScanRA
2024-12-05 09:49:02 +01:00
LocalDataflow.cpp
Fix C++20 related failures in VISA for Ubuntu
2025-05-09 18:39:03 +02:00
LocalDataflow.h
Various vISA refactors
2023-12-18 18:46:19 +01:00
LocalRA.cpp
RA change
2025-07-18 02:38:09 +02:00
LocalRA.h
Fix the bug for SWSB dependence missing on undefined variable
2025-01-22 23:30:18 +01:00
LoopAnalysis.cpp
Refactor code so that each G4_BB in FlowGraph points to
2024-07-15 06:25:08 +02:00
LoopAnalysis.h
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
Lowered_IR.cpp
…
main.cpp
Pass scratch offset for gtpin from IGC
2024-02-15 06:11:47 +01:00
Mem_Manager.cpp
…
Mem_Manager.h
Apply rule-of-three
2025-08-20 11:34:09 +02:00
Metadata.h
…
MetadataDumpRA.cpp
Minor fixes for RA metadata
2023-08-07 21:02:10 +02:00
MetadataDumpRA.h
Minor fixes for RA metadata
2023-08-07 21:02:10 +02:00
Optimizer.cpp
Move the S0 indirect send generation before post-RA
2025-09-09 01:46:13 +02:00
Optimizer.h
Add Pre-RA register pressure stat
2025-08-27 18:09:24 +02:00
Option.cpp
Enable emission of CE register value to stack
2025-04-01 07:54:28 +02:00
Option.h
Apply rule-of-three
2025-08-20 11:34:09 +02:00
PhyRegUsage.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
PhyRegUsage.h
Add PTL support
2025-01-17 10:56:05 +01:00
PlatformInfo.h
…
PointsToAnalysis.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
PointsToAnalysis.h
Update vISA P2A to link unresolved address variables to all possible addresses
2024-01-18 23:22:35 +01:00
PreDefinedVars.cpp
Changes in code.
2024-09-30 02:20:10 +02:00
PreDefinedVars.h
Changes in code.
2024-09-30 02:20:10 +02:00
PrologEpilog.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
RADebug.cpp
Fixing ShaderOverride case path on Linux
2025-07-16 20:18:10 +02:00
RADebug.h
Preserve logic of adding weak edges
2023-12-27 07:53:39 +01:00
ReduceExecSize.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
RegAlloc.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
RegAlloc.h
Pre-assign GRF to spillHeader in fail safe RA iteration
2025-10-07 12:00:48 +02:00
RelocationEntry.cpp
…
RelocationEntry.hpp
G4 relocation syntax
2023-08-02 01:02:41 +02:00
Rematerialization.cpp
minor code refactoring.
2024-06-12 17:57:56 +02:00
Rematerialization.h
Conform to rule of three
2023-12-01 03:33:59 -05:00
RPE.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
RPE.h
Apply rule-of-three
2025-08-20 11:34:09 +02:00
SCCAnalysis.cpp
Iterate using references in vISA
2023-11-29 10:54:24 -05:00
SCCAnalysis.h
Conform to rule of three
2023-12-01 03:33:59 -05:00
SpillCleanup.cpp
Use appropriate size when spilling a non-send destination
2025-04-21 13:19:27 +02:00
SpillCleanup.h
Use appropriate size when spilling a non-send destination
2025-04-21 13:19:27 +02:00
SpillCode.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
SpillCode.h
Add PTL support
2025-01-17 10:56:05 +01:00
SpillManagerGMRF.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
SpillManagerGMRF.h
Apply rule-of-three
2025-08-20 11:34:09 +02:00
SplitAlignedScalars.cpp
Iterate using references in vISA
2023-11-29 10:54:24 -05:00
SplitAlignedScalars.h
Improve RA optimization for scalar payload in send
2023-07-05 18:21:43 +02:00
SWWA.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
Timer.cpp
Adjust empty lines and spaces
2025-09-03 01:29:06 +02:00
Timer.h
Multiple Coverity Fixes
2023-12-27 12:19:29 +01:00
TimerDefs.h
…
TranslationInterface.cpp
…
VarSplit.cpp
IGA: Clean-up gcc warnings
2025-07-01 18:23:24 +02:00
VarSplit.h
Replace weak edges with 4GRF alignment
2023-12-05 01:58:52 -05:00
visaBuilder_export.cpp
…
VISAKernel.h
Use ZEBinary relocation tables instead of legacy types
2025-07-29 15:18:15 +02:00
VISAKernelImpl.cpp
Use ZEBinary symbol tables instead of legacy types
2025-08-07 23:59:08 +02:00