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llvm-mirror/utils/TableGen
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Simon Pilgrim d2a627a8b6 [TableGen] CodeGenDAGPatterns::GenerateVariants - basic caching of matching predicates 
CodeGenDAGPatterns::GenerateVariants is a costly function in many tblgen commands (33.87% of the total runtime of x86 -gen-dag-isel), and due to the O(N^2) nature of the function, there are a high number of repeated comparisons of the pattern's vector<Predicate>.

This initial patch at least avoids repeating these comparisons for every Variant in a pattern. I began investigating caching all the matches before entering the loop but hit issues with how best to store the data and how to update the cache as patterns were added.

Saves around 15secs in debug builds of x86 -gen-dag-isel.

Differential Revision: https://reviews.llvm.org/D51035

llvm-svn: 340837
2018-08-28 15:42:08 +00:00
..
AsmMatcherEmitter.cpp [Tablegen] Optimize isSubsetOf() in AsmMatcherEmitter.cpp. NFC 2018-07-13 16:36:14 +00:00
AsmWriterEmitter.cpp [TableGen] Prevent double flattening of InstAlias asm strings in the asm matcher emitter. 2018-06-18 01:28:01 +00:00
AsmWriterInst.cpp
AsmWriterInst.h
Attributes.cpp
CallingConvEmitter.cpp
CMakeLists.txt [WebAssembly] TableGen backend for stackifying instructions 2018-08-27 22:02:09 +00:00
CodeEmitterGen.cpp
CodeGenDAGPatterns.cpp [TableGen] CodeGenDAGPatterns::GenerateVariants - basic caching of matching predicates 2018-08-28 15:42:08 +00:00
CodeGenDAGPatterns.h [TableGen] TypeInfer - Cache the legal types as TypeSetByHwMode 2018-08-17 15:54:07 +00:00
CodeGenHwModes.cpp
CodeGenHwModes.h
CodeGenInstruction.cpp [WebAssembly] Add isEHScopeReturn instruction property 2018-08-21 19:44:11 +00:00
CodeGenInstruction.h [WebAssembly] Add isEHScopeReturn instruction property 2018-08-21 19:44:11 +00:00
CodeGenIntrinsics.h Fix layering of MachineValueType.h by moving it from CodeGen to Support 2018-03-23 23:58:25 +00:00
CodeGenMapTable.cpp
CodeGenRegisters.cpp [X86] Add phony registers for high halves of regs with low halves 2018-07-02 19:05:09 +00:00
CodeGenRegisters.h [TableGen] Return ValueTypeByHwMode by const reference from CodeGenRegisterClass::getValueTypeNum 2018-08-16 15:29:24 +00:00
CodeGenSchedule.cpp [Tablegen][MCInstPredicate] Removed redundant template argument from class TIIPredicate, and implemented verification rules for TIIPredicates. 2018-08-14 18:36:54 +00:00
CodeGenSchedule.h [Tablegen][MCInstPredicate] Removed redundant template argument from class TIIPredicate, and implemented verification rules for TIIPredicates. 2018-08-14 18:36:54 +00:00
CodeGenTarget.cpp [GlobalISel][Tablegen] Assign small opcodes to pseudos 2018-05-23 22:10:21 +00:00
CodeGenTarget.h [GlobalISel][Tablegen] Assign small opcodes to pseudos 2018-05-23 22:10:21 +00:00
CTagsEmitter.cpp [TableGen] Change std::sort to llvm::sort in response to r327219 2018-04-06 20:18:05 +00:00
DAGISelEmitter.cpp [TableGen] Support multi-alternative pattern fragments 2018-07-13 13:18:00 +00:00
DAGISelMatcher.cpp
DAGISelMatcher.h Fix layering of MachineValueType.h by moving it from CodeGen to Support 2018-03-23 23:58:25 +00:00
DAGISelMatcherEmitter.cpp
DAGISelMatcherGen.cpp [TableGen] Return ValueTypeByHwMode by const reference from CodeGenRegisterClass::getValueTypeNum 2018-08-16 15:29:24 +00:00
DAGISelMatcherOpt.cpp Rename DEBUG macro to LLVM_DEBUG. 2018-05-14 12:53:11 +00:00
DFAPacketizerEmitter.cpp Rename DEBUG macro to LLVM_DEBUG. 2018-05-14 12:53:11 +00:00
DisassemblerEmitter.cpp [WebAssembly] Initial Disassembler. 2018-05-10 22:16:44 +00:00
FastISelEmitter.cpp [TableGen] Use std::move where possible in InstructionMemo constructor. NFCI. 2018-08-28 11:10:27 +00:00
FixedLenDecoderEmitter.cpp [windows] Don't inline fieldFromInstruction on Windows 2018-07-25 17:33:20 +00:00
GlobalISelEmitter.cpp [globalisel] Remove dead code from GlobalISelEmitter 2018-08-12 21:49:42 +00:00
InfoByHwMode.cpp [TableGen] Change std::sort to llvm::sort in response to r327219 2018-04-06 20:18:05 +00:00
InfoByHwMode.h [TableGen] Don't separately search for DefaultMode when we're going to iterate the set anyway. NFCI. 2018-08-17 17:45:15 +00:00
InstrDocsEmitter.cpp [WebAssembly] Add isEHScopeReturn instruction property 2018-08-21 19:44:11 +00:00
InstrInfoEmitter.cpp [WebAssembly] Add isEHScopeReturn instruction property 2018-08-21 19:44:11 +00:00
IntrinsicEmitter.cpp [Power9] Add __float128 builtins for Round To Odd 2018-07-09 18:50:06 +00:00
LLVMBuild.txt Add missing dependency (headers are included from MC, so a link dependency could exist easily enough) 2018-03-29 00:29:43 +00:00
OptParserEmitter.cpp
PredicateExpander.cpp [Tablegen][MCInstPredicate] Removed redundant template argument from class TIIPredicate, and implemented verification rules for TIIPredicates. 2018-08-14 18:36:54 +00:00
PredicateExpander.h [Tablegen][MCInstPredicate] Removed redundant template argument from class TIIPredicate, and implemented verification rules for TIIPredicates. 2018-08-14 18:36:54 +00:00
PseudoLoweringEmitter.cpp Rename DEBUG macro to LLVM_DEBUG. 2018-05-14 12:53:11 +00:00
RegisterBankEmitter.cpp Rename DEBUG macro to LLVM_DEBUG. 2018-05-14 12:53:11 +00:00
RegisterInfoEmitter.cpp [MC] Remove PhysRegSize from MCRegisterClass 2018-08-09 15:19:07 +00:00
RISCVCompressInstEmitter.cpp Rename DEBUG macro to LLVM_DEBUG. 2018-05-14 12:53:11 +00:00
SDNodeProperties.cpp
SDNodeProperties.h
SearchableTableEmitter.cpp TableGen/SearchableTables: Cast enums to unsigned in generated code 2018-08-23 08:02:02 +00:00
SequenceToOffsetTable.h
SubtargetEmitter.cpp [Tablegen][MCInstPredicate] Removed redundant template argument from class TIIPredicate, and implemented verification rules for TIIPredicates. 2018-08-14 18:36:54 +00:00
SubtargetFeatureInfo.cpp IWYU for llvm-config.h in llvm, additions. 2018-04-30 14:59:11 +00:00
SubtargetFeatureInfo.h Remove \brief commands from doxygen comments. 2018-05-01 15:54:18 +00:00
TableGen.cpp [WebAssembly] TableGen backend for stackifying instructions 2018-08-27 22:02:09 +00:00
TableGenBackends.h [WebAssembly] TableGen backend for stackifying instructions 2018-08-27 22:02:09 +00:00
tdtags
Types.cpp
Types.h
WebAssemblyDisassemblerEmitter.cpp [WebAssembly] Initial Disassembler. 2018-05-10 22:16:44 +00:00
WebAssemblyDisassemblerEmitter.h [WebAssembly] Initial Disassembler. 2018-05-10 22:16:44 +00:00
WebAssemblyStackifierEmitter.cpp [WebAssembly] TableGen backend for stackifying instructions 2018-08-27 22:02:09 +00:00
X86DisassemblerShared.h [X86] Use unique_ptr to simplify memory management. NFC 2018-03-24 07:15:47 +00:00
X86DisassemblerTables.cpp [X86] Remove DATA32_PREFIX. Hack the printing for DATA16_PREFIX to print 'data32' in 16-bit mode. Hack the asm parser to convert 'data32' to 'data16' in 16-bit mode. 2018-04-22 00:52:02 +00:00
X86DisassemblerTables.h [X86] Add a new disassembler opcode map for 3DNow. Stop treating 3DNow as an attribute. 2018-03-24 07:48:54 +00:00
X86EVEX2VEXTablesEmitter.cpp [X86] Add the ability to force an EVEX2VEX mapping table entry from the .td files. Remove remaining manual table entries from the tablegen emitter. 2018-06-19 04:24:44 +00:00
X86FoldTablesEmitter.cpp [X86] More additions to the load folding tables based on the autogenerated tables. 2018-06-16 23:25:50 +00:00
X86ModRMFilters.cpp
X86ModRMFilters.h
X86RecognizableInstr.cpp [X86] Don't ignore 0x66 prefix on relative jumps in 64-bit mode. Fix opcode selection of relative jumps in 16-bit mode. Treat jno/jo like other jcc instructions. 2018-08-13 22:06:28 +00:00
X86RecognizableInstr.h [X86] Add a new VEX_WPrefix encoding to tag EVEX instruction that have VEX.W==1, but can be converted to their VEX equivalent that uses VEX.W==0. 2018-06-19 04:24:42 +00:00