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5bb1ce8bf8
Summary:
This transformation reassociates a n-ary add so that the add can partially reuse
existing instructions. For example, this pass can simplify
void foo(int a, int b) {
bar(a + b);
bar((a + 2) + b);
}
to
void foo(int a, int b) {
int t = a + b;
bar(t);
bar(t + 2);
}
saving one add instruction.
Fixes PR22357 (https://llvm.org/bugs/show_bug.cgi?id=22357).
Test Plan: nary-add.ll
Reviewers: broune, dberlin, hfinkel, meheff, sanjoy, atrick
Reviewed By: sanjoy, atrick
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8950
llvm-svn: 234855
57 lines
1.2 KiB
CMake
57 lines
1.2 KiB
CMake
add_llvm_library(LLVMScalarOpts
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ADCE.cpp
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AlignmentFromAssumptions.cpp
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BDCE.cpp
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ConstantHoisting.cpp
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ConstantProp.cpp
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CorrelatedValuePropagation.cpp
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DCE.cpp
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DeadStoreElimination.cpp
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EarlyCSE.cpp
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FlattenCFGPass.cpp
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Float2Int.cpp
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GVN.cpp
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InductiveRangeCheckElimination.cpp
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IndVarSimplify.cpp
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JumpThreading.cpp
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LICM.cpp
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LoadCombine.cpp
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LoopDeletion.cpp
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LoopIdiomRecognize.cpp
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LoopInstSimplify.cpp
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LoopInterchange.cpp
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LoopRerollPass.cpp
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LoopRotation.cpp
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LoopStrengthReduce.cpp
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LoopUnrollPass.cpp
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LoopUnswitch.cpp
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LowerAtomic.cpp
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LowerExpectIntrinsic.cpp
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MemCpyOptimizer.cpp
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MergedLoadStoreMotion.cpp
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NaryReassociate.cpp
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PartiallyInlineLibCalls.cpp
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PlaceSafepoints.cpp
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Reassociate.cpp
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Reg2Mem.cpp
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RewriteStatepointsForGC.cpp
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SCCP.cpp
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SROA.cpp
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SampleProfile.cpp
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Scalar.cpp
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ScalarReplAggregates.cpp
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Scalarizer.cpp
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SeparateConstOffsetFromGEP.cpp
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SimplifyCFGPass.cpp
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Sink.cpp
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StraightLineStrengthReduce.cpp
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StructurizeCFG.cpp
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TailRecursionElimination.cpp
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ADDITIONAL_HEADER_DIRS
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${LLVM_MAIN_INCLUDE_DIR}/llvm/Transforms
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${LLVM_MAIN_INCLUDE_DIR}/llvm/Transforms/Scalar
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)
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add_dependencies(LLVMScalarOpts intrinsics_gen)
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