Sanjay Patel 885227718e [DAGCombiner] fold select-of-constants to shift ...

This reverses the scalar canonicalization proposed in D63382.

Pre: isPowerOf2(C1)
%r = select i1 %cond, i32 C1, i32 0
=>
%z = zext i1 %cond to i32
%r = shl i32 %z, log2(C1)

https://rise4fun.com/Alive/Z50

x86 already tries to fold this pattern, but it isn't done
uniformly, so we still see a diff. AArch64 probably should
enable the TLI hook to benefit too, but that's a follow-on.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@374397 91177308-0d34-0410-b5e6-96231b3b80d8

2019-10-10 17:52:02 +00:00

..

CMakeLists.txt

Remove trailing whitespace to trigger re-cmaking

2017-10-02 21:54:38 +00:00

DAGCombiner.cpp

[DAGCombiner] fold select-of-constants to shift

2019-10-10 17:52:02 +00:00

FastISel.cpp

[FastISel] Copy the inline assembly dialect to the INLINEASM instruction.

2019-10-05 23:21:17 +00:00

FunctionLoweringInfo.cpp

Finish moving TargetRegisterInfo::isVirtualRegister() and friends to llvm::Register as started by r367614. NFC

2019-08-01 23:27:28 +00:00

InstrEmitter.cpp

[TargetRegisterInfo] Remove SVT argument from getCommonSubClass.

2019-09-13 05:24:37 +00:00

InstrEmitter.h

[SelectionDAG] Enhance the simplification of copyto from implicit-def.

2019-05-27 18:26:29 +00:00

LegalizeDAG.cpp

[FPEnv] Add constrained intrinsics for lrint and lround

2019-10-07 13:20:00 +00:00

LegalizeFloatTypes.cpp

[LegalizeTypes] Remove code for softening a float type to itself.

2019-09-12 05:55:14 +00:00

LegalizeIntegerTypes.cpp

[Codegen] Alter the default promotion for saturating adds and subs

2019-10-10 16:04:49 +00:00

LegalizeTypes.cpp

[LegalizeTypes] Remove code for softening a float type to itself.

2019-09-12 05:55:14 +00:00

LegalizeTypes.h

[LegalizeTypes] Remove code for softening a float type to itself.

2019-09-12 05:55:14 +00:00

LegalizeTypesGeneric.cpp

[LegalizeTypes][X86] When splitting a vselect for type legalization, don't split a setcc condition if the setcc input is legal and vXi1 conditions are supported

2019-10-06 18:43:03 +00:00

LegalizeVectorOps.cpp

[SelectionDAG] Remove ISD::FP_ROUND_INREG

2019-09-09 17:54:44 +00:00

LegalizeVectorTypes.cpp

[SDAG] Update generic code to conservatively check for isAtomic in addition to isVolatile

2019-09-12 22:49:17 +00:00

LLVMBuild.txt

Update the file headers across all of the LLVM projects in the monorepo

2019-01-19 08:50:56 +00:00

ResourcePriorityQueue.cpp

Implementation of asm-goto support in LLVM

2019-02-08 20:48:56 +00:00

ScheduleDAGFast.cpp

Finish moving TargetRegisterInfo::isVirtualRegister() and friends to llvm::Register as started by r367614. NFC

2019-08-01 23:27:28 +00:00

ScheduleDAGRRList.cpp

[ScheduleDAG] When a node is cloned, add an edge between the nodes.

2019-10-04 19:51:40 +00:00

ScheduleDAGSDNodes.cpp

Apply llvm-prefer-register-over-unsigned from clang-tidy to LLVM

2019-08-15 19:22:08 +00:00

ScheduleDAGSDNodes.h

Update the file headers across all of the LLVM projects in the monorepo

2019-01-19 08:50:56 +00:00

ScheduleDAGVLIW.cpp

Update the file headers across all of the LLVM projects in the monorepo

2019-01-19 08:50:56 +00:00

SDNodeDbgValue.h

Update the file headers across all of the LLVM projects in the monorepo

2019-01-19 08:50:56 +00:00

SelectionDAG.cpp

[FPEnv] Add constrained intrinsics for lrint and lround

2019-10-07 13:20:00 +00:00

SelectionDAGAddressAnalysis.cpp

[DAGCombiner] Unify Lifetime and memory Op aliasing.

2019-03-27 14:14:46 +00:00

SelectionDAGBuilder.cpp

[Support] Add mathematical constants

2019-10-09 19:58:01 +00:00

SelectionDAGBuilder.h

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

SelectionDAGDumper.cpp

[FPEnv] Add constrained intrinsics for lrint and lround

2019-10-07 13:20:00 +00:00

SelectionDAGISel.cpp

TLI: Remove DAG argument from getRegisterByName

2019-10-01 01:44:39 +00:00

SelectionDAGPrinter.cpp

Update the file headers across all of the LLVM projects in the monorepo

2019-01-19 08:50:56 +00:00

SelectionDAGTargetInfo.cpp

Update the file headers across all of the LLVM projects in the monorepo

2019-01-19 08:50:56 +00:00

StatepointLowering.cpp

[Statepoints] Fix overalignment of loads in no-realign-stack functions

2019-08-02 20:17:37 +00:00

StatepointLowering.h

[FastISel] Fix crash for gc.relocate lowring

2019-04-05 05:41:08 +00:00

TargetLowering.cpp

[DAG][X86] Convert isNegatibleForFree/GetNegatedExpression to a target hook (PR42863)

2019-10-01 15:32:04 +00:00