Elena Demikhovsky 8be39c81b0 Masked Gather and Scatter Intrinsics. ... Gather and Scatter are new introduced intrinsics, comming after recently implemented masked load and store. This is the first patch for Gather and Scatter intrinsics. It includes only the syntax, parsing and verification. Gather and Scatter intrinsics allow to perform multiple memory accesses (read/write) in one vector instruction. The intrinsics are not target specific and will have the following syntax: Gather: declare <16 x i32> @llvm.masked.gather.v16i32(<16 x i32*> <vector of ptrs>, i32 <alignment>, <16 x i1> <mask>, <16 x i32> <passthru>) declare <8 x float> @llvm.masked.gather.v8f32(<8 x float*><vector of ptrs>, i32 <alignment>, <8 x i1> <mask>, <8 x float><passthru>) Scatter: declare void @llvm.masked.scatter.v8i32(<8 x i32><vector value to be stored> , <8 x i32*><vector of ptrs> , i32 <alignment>, <8 x i1> <mask>) declare void @llvm.masked.scatter.v16i32(<16 x i32> <vector value to be stored> , <16 x i32*> <vector of ptrs>, i32 <alignment>, <16 x i1><mask> ) Vector of ptrs - a set of source/destination addresses, to load/store the value. Mask - switches on/off vector lanes to prevent memory access for switched-off lanes vector of ptrs, value and mask should have the same vector width. These are code examples where gather / scatter should be used and will allow function vectorization ;void foo1(int * restrict A, int * restrict B, int * restrict C) { ; for (int i=0; i<SIZE; i++) { ; A[i] = B[C[i]]; ; } ;} ;void foo3(int * restrict A, int * restrict B) { ; for (int i=0; i<SIZE; i++) { ; A[B[i]] = i+5; ; } ;} Tests will come in the following patches, with CodeGen and Vectorizer. http://reviews.llvm.org/D7433 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228521 91177308-0d34-0410-b5e6-96231b3b80d8		2015-02-08 08:27:19 +00:00
..
AsmMatcherEmitter.cpp	Replace size method call of containers to empty method where appropriate	2015-01-15 11:41:30 +00:00
AsmWriterEmitter.cpp	Replace size method call of containers to empty method where appropriate	2015-01-15 11:41:30 +00:00
AsmWriterInst.cpp
AsmWriterInst.h
CallingConvEmitter.cpp	Move DataLayout back to the TargetMachine from TargetSubtargetInfo	2015-01-26 19:03:15 +00:00
CMakeLists.txt
CodeEmitterGen.cpp	Replace size method call of containers to empty method where appropriate	2015-01-15 11:41:30 +00:00
CodeGenDAGPatterns.cpp	Intrinsics: introduce llvm_any_ty aka ValueType Any	2015-01-22 20:14:38 +00:00
CodeGenDAGPatterns.h
CodeGenInstruction.cpp
CodeGenInstruction.h
CodeGenIntrinsics.h
CodeGenMapTable.cpp	Replace size method call of containers to empty method where appropriate	2015-01-15 11:41:30 +00:00
CodeGenRegisters.cpp	STLExtras: Provide less/equal functors with templated function call operators, plus a deref'ing functor template utility	2015-02-02 18:35:10 +00:00
CodeGenRegisters.h	STLExtras: Provide less/equal functors with templated function call operators, plus a deref'ing functor template utility	2015-02-02 18:35:10 +00:00
CodeGenSchedule.cpp
CodeGenSchedule.h
CodeGenTarget.cpp	Intrinsics: introduce llvm_any_ty aka ValueType Any	2015-01-22 20:14:38 +00:00
CodeGenTarget.h
CTagsEmitter.cpp
DAGISelEmitter.cpp
DAGISelMatcher.cpp
DAGISelMatcher.h
DAGISelMatcherEmitter.cpp
DAGISelMatcherGen.cpp
DAGISelMatcherOpt.cpp
DFAPacketizerEmitter.cpp	Replace size method call of containers to empty method where appropriate	2015-01-15 11:41:30 +00:00
DisassemblerEmitter.cpp
FastISelEmitter.cpp
FixedLenDecoderEmitter.cpp	Replace size method call of containers to empty method where appropriate	2015-01-15 11:41:30 +00:00
InstrInfoEmitter.cpp
IntrinsicEmitter.cpp	Masked Gather and Scatter Intrinsics.	2015-02-08 08:27:19 +00:00
LLVMBuild.txt
Makefile
module.modulemap
OptParserEmitter.cpp
PseudoLoweringEmitter.cpp
RegisterInfoEmitter.cpp	STLExtras: Provide less/equal functors with templated function call operators, plus a deref'ing functor template utility	2015-02-02 18:35:10 +00:00
SequenceToOffsetTable.h
SubtargetEmitter.cpp	Replace size method call of containers to empty method where appropriate	2015-01-15 11:41:30 +00:00
TableGen.cpp
TableGenBackends.h
tdtags
X86DisassemblerShared.h
X86DisassemblerTables.cpp
X86DisassemblerTables.h
X86ModRMFilters.cpp
X86ModRMFilters.h
X86RecognizableInstr.cpp	[X86] Teach disassembler to handle illegal immediates on AVX512 integer compare instructions.	2015-01-28 10:09:56 +00:00
X86RecognizableInstr.h