Andrea Di Biagio 1726e2ff15 [X86] Add two combine rules to simplify dag nodes introduced during type legalization when promoting nodes with illegal vector type. ...

This patch teaches the backend how to simplify/canonicalize dag node
sequences normally introduced by the backend when promoting certain dag nodes
with illegal vector type.

This patch adds two new combine rules:
1) fold (shuffle (bitcast (BINOP A, B)), Undef, <Mask>) ->
        (shuffle (BINOP (bitcast A), (bitcast B)), Undef, <Mask>)

2) fold (BINOP (shuffle (A, Undef, <Mask>)), (shuffle (B, Undef, <Mask>))) ->
        (shuffle (BINOP A, B), Undef, <Mask>).

Both rules are only triggered on the type-legalized DAG.
In particular, rule 1. is a target specific combine rule that attempts
to sink a bitconvert into the operands of a binary operation.
Rule 2. is a target independet rule that attempts to move a shuffle
immediately after a binary operation.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209930 91177308-0d34-0410-b5e6-96231b3b80d8

2014-05-30 23:17:53 +00:00

..

CMakeLists.txt

…

DAGCombiner.cpp

[X86] Add two combine rules to simplify dag nodes introduced during type legalization when promoting nodes with illegal vector type.

2014-05-30 23:17:53 +00:00

FastISel.cpp

[Modules] Remove potential ODR violations by sinking the DEBUG_TYPE

2014-04-22 02:02:50 +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

…

LegalizeDAG.cpp

Fix wrong setcc result type when legalizing uaddo/usubo

2014-05-28 20:51:42 +00:00

LegalizeFloatTypes.cpp

[Modules] Remove potential ODR violations by sinking the DEBUG_TYPE

2014-04-22 02:02:50 +00:00

LegalizeIntegerTypes.cpp

Legalizer: Make bswap promotion safe for vectors.

2014-05-20 09:42:31 +00:00

LegalizeTypes.cpp

Target: remove old constructors for CallLoweringInfo

2014-05-17 21:50:17 +00:00

LegalizeTypes.h

[Modules] Sink the DEBUG_TYPE macro out of LegalizeTypes.h and into the

2014-04-21 19:43:07 +00:00

LegalizeTypesGeneric.cpp

Use makeArrayRef insted of calling ArrayRef<T> constructor directly. I introduced most of these recently.

2014-04-30 07:17:30 +00:00

LegalizeVectorOps.cpp

SDAG: Legalize vector BSWAP into a shuffle if the shuffle is legal but the bswap not.

2014-05-19 13:12:38 +00:00

LegalizeVectorTypes.cpp

Use makeArrayRef insted of calling ArrayRef<T> constructor directly. I introduced most of these recently.

2014-04-30 07:17:30 +00:00

LLVMBuild.txt

…

Makefile

…

ResourcePriorityQueue.cpp

[Modules] Remove potential ODR violations by sinking the DEBUG_TYPE

2014-04-22 02:02:50 +00:00

ScheduleDAGFast.cpp

[Modules] Remove potential ODR violations by sinking the DEBUG_TYPE

2014-04-22 02:02:50 +00:00

ScheduleDAGRRList.cpp

[C++11] Add 'override' keywords and remove 'virtual'. Additionally add 'final' and leave 'virtual' on some methods that are marked virtual without overriding anything and have no obvious overrides themselves.

2014-04-29 07:58:41 +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

[Modules] Remove potential ODR violations by sinking the DEBUG_TYPE

2014-04-22 02:02:50 +00:00

SDNodeDbgValue.h

This reapplies r207235 with an additional bugfixes caught by the msan

2014-04-25 20:49:25 +00:00

SelectionDAG.cpp

[pr19636] Fix known bit computation in urem instruction with power of two.

2014-05-30 15:00:45 +00:00

SelectionDAGBuilder.cpp

SelectionDAG: skip barriers for unordered atomic operations

2014-05-30 14:41:51 +00:00

SelectionDAGBuilder.h

This reapplies r207235 with an additional bugfixes caught by the msan

2014-04-25 20:49:25 +00:00

SelectionDAGDumper.cpp

Implememting named register intrinsics

2014-05-06 16:51:25 +00:00

SelectionDAGISel.cpp

Rename ComputeMaskedBits to computeKnownBits. "Masked" has been

2014-05-14 21:14:37 +00:00

SelectionDAGPrinter.cpp

[Modules] Make Support/Debug.h modular. This requires it to not change

2014-04-21 22:55:11 +00:00

TargetLowering.cpp

Fix an assertion failure caused by v1i64 in DAGCombiner Shrink.

2014-05-29 09:19:07 +00:00

TargetSelectionDAGInfo.cpp

Rename some member variables from TD to DL.

2014-02-18 15:33:12 +00:00