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llvm-project/llvm/lib/CodeGen/SelectionDAG
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Andrea Di Biagio 3960a9571f [DAGCombiner] Add more rules to combine shuffle vector dag nodes. 
This patch teaches the DAGCombiner how to fold a pair of shuffles
according to rules:
  1.  shuffle(shuffle A, B, M0), B, M1) -> shuffle(A, B, M2)
  2.  shuffle(shuffle A, B, M0), A, M1) -> shuffle(A, B, M3)

The new rules would only trigger if the resulting shuffle has legal type and
legal mask.

Added test 'combine-vec-shuffle-3.ll' to verify that DAGCombiner correctly
folds shuffles on x86 when the resulting mask is legal. Also added some negative
cases to verify that we avoid introducing illegal shuffles.

llvm-svn: 213001
 		2014-07-14 22:46:26 +00:00
..
CMakeLists.txt llvm/lib: [CMake] Add explicit dependency to intrinsics_gen. 2012-06-24 13:32:01 +00:00
DAGCombiner.cpp [DAGCombiner] Add more rules to combine shuffle vector dag nodes. 2014-07-14 22:46:26 +00:00
FastISel.cpp Avoid a warning from MSVC on "*/" in this code by inserting a space 2014-07-12 00:06:46 +00:00
FunctionLoweringInfo.cpp [Modules] Remove potential ODR violations by sinking the DEBUG_TYPE 2014-04-22 02:02:50 +00:00
InstrEmitter.cpp This reapplies r207235 with an additional bugfixes caught by the msan 2014-04-25 20:49:25 +00:00
InstrEmitter.h Revert "Give internal classes hidden visibility." 2013-09-11 18:05:11 +00:00
LLVMBuild.txt
…
LegalizeDAG.cpp ARM: Allow __fp16 as a function arg or return type for AArch64 2014-07-11 13:33:46 +00:00
LegalizeFloatTypes.cpp [Modules] Remove potential ODR violations by sinking the DEBUG_TYPE 2014-04-22 02:02:50 +00:00
LegalizeIntegerTypes.cpp Make it possible for ints/floats to return different values from getBooleanContents() 2014-07-10 10:18:12 +00:00
LegalizeTypes.cpp Make it possible for ints/floats to return different values from getBooleanContents() 2014-07-10 10:18:12 +00:00
LegalizeTypes.h [x86,SDAG] Introduce any- and sign-extend-vector-inreg nodes analogous 2014-07-10 12:32:32 +00:00
LegalizeTypesGeneric.cpp Fix ppcf128 component access on little-endian systems 2014-07-03 15:06:47 +00:00
LegalizeVectorOps.cpp [x86,SDAG] Introduce any- and sign-extend-vector-inreg nodes analogous 2014-07-10 12:32:32 +00:00
LegalizeVectorTypes.cpp [x86,SDAG] Introduce any- and sign-extend-vector-inreg nodes analogous 2014-07-10 12:32:32 +00:00
Makefile
…
ResourcePriorityQueue.cpp Fix 'platform-specific' hyphenations 2014-06-30 18:57:16 +00:00
SDNodeDbgValue.h This reapplies r207235 with an additional bugfixes caught by the msan 2014-04-25 20:49:25 +00:00
ScheduleDAGFast.cpp [Modules] Remove potential ODR violations by sinking the DEBUG_TYPE 2014-04-22 02:02:50 +00:00
ScheduleDAGRRList.cpp fixed typo 2014-07-14 18:21:07 +00:00
ScheduleDAGSDNodes.cpp Convert SelectionDAG::MorphNodeTo to use ArrayRef. 2014-04-27 19:21:16 +00:00
ScheduleDAGSDNodes.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-16 04:21:27 +00:00
ScheduleDAGVLIW.cpp The hazard recognizer only needs a subtarget, not a target machine 2014-06-13 22:38:52 +00:00
SelectionDAG.cpp [x86,SDAG] Introduce any- and sign-extend-vector-inreg nodes analogous 2014-07-10 12:32:32 +00:00
SelectionDAGBuilder.cpp [FastISel] Make isInTailCallPosition independent of SelectionDAG. 2014-07-11 20:50:47 +00:00
SelectionDAGBuilder.h Fix 'platform-specific' hyphenations 2014-06-30 18:57:16 +00:00
SelectionDAGDumper.cpp [x86,SDAG] Introduce any- and sign-extend-vector-inreg nodes analogous 2014-07-10 12:32:32 +00:00
SelectionDAGISel.cpp Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
SelectionDAGPrinter.cpp Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
TargetLowering.cpp SelectionDAG: Factor FP_TO_SINT lower code out of DAGLegalizer 2014-07-10 22:40:18 +00:00
TargetSelectionDAGInfo.cpp Have TargetSelectionDAGInfo take a DataLayout initializer rather than 2014-06-06 19:04:48 +00:00