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authorNick Desaulniers <ndesaulniers@google.com>2019-11-18 17:42:44 -0800
committerNick Desaulniers <ndesaulniers@google.com>2019-11-18 17:46:17 -0800
commitec72e15d63836c00a43f358e2f38faf843a64ce3 (patch)
tree3d9027e1afbffa44184ecf031c276f231a9260fd /clang-r370808/include/llvm/Transforms/Scalar.h
parent83d401b133d301508c2a8e0f9afccc8dbcea5f08 (diff)
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Update prebuilt Clang to r370808.
clang 10.0.1 (based on r370808) from build 6016109. Bug: http://b/139945549 Test: N/A Change-Id: Ie40b5bad50b89e3bc4f52dcedc911b7fd2f5beb6
Diffstat (limited to 'clang-r370808/include/llvm/Transforms/Scalar.h')
-rw-r--r--clang-r370808/include/llvm/Transforms/Scalar.h514
1 files changed, 514 insertions, 0 deletions
diff --git a/clang-r370808/include/llvm/Transforms/Scalar.h b/clang-r370808/include/llvm/Transforms/Scalar.h
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+//===-- Scalar.h - Scalar Transformations -----------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This header file defines prototypes for accessor functions that expose passes
+// in the Scalar transformations library.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_SCALAR_H
+#define LLVM_TRANSFORMS_SCALAR_H
+
+#include <functional>
+
+namespace llvm {
+
+class BasicBlockPass;
+class Function;
+class FunctionPass;
+class ModulePass;
+class Pass;
+class GetElementPtrInst;
+class PassInfo;
+class TargetLowering;
+class TargetMachine;
+
+//===----------------------------------------------------------------------===//
+//
+// ConstantPropagation - A worklist driven constant propagation pass
+//
+FunctionPass *createConstantPropagationPass();
+
+//===----------------------------------------------------------------------===//
+//
+// AlignmentFromAssumptions - Use assume intrinsics to set load/store
+// alignments.
+//
+FunctionPass *createAlignmentFromAssumptionsPass();
+
+//===----------------------------------------------------------------------===//
+//
+// SCCP - Sparse conditional constant propagation.
+//
+FunctionPass *createSCCPPass();
+
+//===----------------------------------------------------------------------===//
+//
+// DeadInstElimination - This pass quickly removes trivially dead instructions
+// without modifying the CFG of the function. It is a BasicBlockPass, so it
+// runs efficiently when queued next to other BasicBlockPass's.
+//
+Pass *createDeadInstEliminationPass();
+
+//===----------------------------------------------------------------------===//
+//
+// DeadCodeElimination - This pass is more powerful than DeadInstElimination,
+// because it is worklist driven that can potentially revisit instructions when
+// their other instructions become dead, to eliminate chains of dead
+// computations.
+//
+FunctionPass *createDeadCodeEliminationPass();
+
+//===----------------------------------------------------------------------===//
+//
+// DeadStoreElimination - This pass deletes stores that are post-dominated by
+// must-aliased stores and are not loaded used between the stores.
+//
+FunctionPass *createDeadStoreEliminationPass();
+
+
+//===----------------------------------------------------------------------===//
+//
+// CallSiteSplitting - This pass split call-site based on its known argument
+// values.
+FunctionPass *createCallSiteSplittingPass();
+
+//===----------------------------------------------------------------------===//
+//
+// AggressiveDCE - This pass uses the SSA based Aggressive DCE algorithm. This
+// algorithm assumes instructions are dead until proven otherwise, which makes
+// it more successful are removing non-obviously dead instructions.
+//
+FunctionPass *createAggressiveDCEPass();
+
+//===----------------------------------------------------------------------===//
+//
+// GuardWidening - An optimization over the @llvm.experimental.guard intrinsic
+// that (optimistically) combines multiple guards into one to have fewer checks
+// at runtime.
+//
+FunctionPass *createGuardWideningPass();
+
+
+//===----------------------------------------------------------------------===//
+//
+// LoopGuardWidening - Analogous to the GuardWidening pass, but restricted to a
+// single loop at a time for use within a LoopPassManager. Desired effect is
+// to widen guards into preheader or a single guard within loop if that's not
+// possible.
+//
+Pass *createLoopGuardWideningPass();
+
+
+//===----------------------------------------------------------------------===//
+//
+// BitTrackingDCE - This pass uses a bit-tracking DCE algorithm in order to
+// remove computations of dead bits.
+//
+FunctionPass *createBitTrackingDCEPass();
+
+//===----------------------------------------------------------------------===//
+//
+// SROA - Replace aggregates or pieces of aggregates with scalar SSA values.
+//
+FunctionPass *createSROAPass();
+
+//===----------------------------------------------------------------------===//
+//
+// InductiveRangeCheckElimination - Transform loops to elide range checks on
+// linear functions of the induction variable.
+//
+Pass *createInductiveRangeCheckEliminationPass();
+
+//===----------------------------------------------------------------------===//
+//
+// InductionVariableSimplify - Transform induction variables in a program to all
+// use a single canonical induction variable per loop.
+//
+Pass *createIndVarSimplifyPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LICM - This pass is a loop invariant code motion and memory promotion pass.
+//
+Pass *createLICMPass();
+Pass *createLICMPass(unsigned LicmMssaOptCap,
+ unsigned LicmMssaNoAccForPromotionCap);
+
+//===----------------------------------------------------------------------===//
+//
+// LoopSink - This pass sinks invariants from preheader to loop body where
+// frequency is lower than loop preheader.
+//
+Pass *createLoopSinkPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopPredication - This pass does loop predication on guards.
+//
+Pass *createLoopPredicationPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopInterchange - This pass interchanges loops to provide a more
+// cache-friendly memory access patterns.
+//
+Pass *createLoopInterchangePass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopStrengthReduce - This pass is strength reduces GEP instructions that use
+// a loop's canonical induction variable as one of their indices.
+//
+Pass *createLoopStrengthReducePass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopUnswitch - This pass is a simple loop unswitching pass.
+//
+Pass *createLoopUnswitchPass(bool OptimizeForSize = false,
+ bool hasBranchDivergence = false);
+
+//===----------------------------------------------------------------------===//
+//
+// LoopInstSimplify - This pass simplifies instructions in a loop's body.
+//
+Pass *createLoopInstSimplifyPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopUnroll - This pass is a simple loop unrolling pass.
+//
+Pass *createLoopUnrollPass(int OptLevel = 2, bool OnlyWhenForced = false,
+ bool ForgetAllSCEV = false, int Threshold = -1,
+ int Count = -1, int AllowPartial = -1,
+ int Runtime = -1, int UpperBound = -1,
+ int AllowPeeling = -1);
+// Create an unrolling pass for full unrolling that uses exact trip count only.
+Pass *createSimpleLoopUnrollPass(int OptLevel = 2, bool OnlyWhenForced = false,
+ bool ForgetAllSCEV = false);
+
+//===----------------------------------------------------------------------===//
+//
+// LoopUnrollAndJam - This pass is a simple loop unroll and jam pass.
+//
+Pass *createLoopUnrollAndJamPass(int OptLevel = 2);
+
+//===----------------------------------------------------------------------===//
+//
+// LoopReroll - This pass is a simple loop rerolling pass.
+//
+Pass *createLoopRerollPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopRotate - This pass is a simple loop rotating pass.
+//
+Pass *createLoopRotatePass(int MaxHeaderSize = -1);
+
+//===----------------------------------------------------------------------===//
+//
+// LoopIdiom - This pass recognizes and replaces idioms in loops.
+//
+Pass *createLoopIdiomPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopVersioningLICM - This pass is a loop versioning pass for LICM.
+//
+Pass *createLoopVersioningLICMPass();
+
+//===----------------------------------------------------------------------===//
+//
+// DemoteRegisterToMemoryPass - This pass is used to demote registers to memory
+// references. In basically undoes the PromoteMemoryToRegister pass to make cfg
+// hacking easier.
+//
+FunctionPass *createDemoteRegisterToMemoryPass();
+extern char &DemoteRegisterToMemoryID;
+
+//===----------------------------------------------------------------------===//
+//
+// Reassociate - This pass reassociates commutative expressions in an order that
+// is designed to promote better constant propagation, GCSE, LICM, PRE...
+//
+// For example: 4 + (x + 5) -> x + (4 + 5)
+//
+FunctionPass *createReassociatePass();
+
+//===----------------------------------------------------------------------===//
+//
+// JumpThreading - Thread control through mult-pred/multi-succ blocks where some
+// preds always go to some succ. Thresholds other than minus one override the
+// internal BB duplication default threshold.
+//
+FunctionPass *createJumpThreadingPass(int Threshold = -1);
+
+//===----------------------------------------------------------------------===//
+//
+// CFGSimplification - Merge basic blocks, eliminate unreachable blocks,
+// simplify terminator instructions, convert switches to lookup tables, etc.
+//
+FunctionPass *createCFGSimplificationPass(
+ unsigned Threshold = 1, bool ForwardSwitchCond = false,
+ bool ConvertSwitch = false, bool KeepLoops = true, bool SinkCommon = false,
+ std::function<bool(const Function &)> Ftor = nullptr);
+
+//===----------------------------------------------------------------------===//
+//
+// FlattenCFG - flatten CFG, reduce number of conditional branches by using
+// parallel-and and parallel-or mode, etc...
+//
+FunctionPass *createFlattenCFGPass();
+
+//===----------------------------------------------------------------------===//
+//
+// CFG Structurization - Remove irreducible control flow
+//
+///
+/// When \p SkipUniformRegions is true the structizer will not structurize
+/// regions that only contain uniform branches.
+Pass *createStructurizeCFGPass(bool SkipUniformRegions = false);
+
+//===----------------------------------------------------------------------===//
+//
+// TailCallElimination - This pass eliminates call instructions to the current
+// function which occur immediately before return instructions.
+//
+FunctionPass *createTailCallEliminationPass();
+
+//===----------------------------------------------------------------------===//
+//
+// EarlyCSE - This pass performs a simple and fast CSE pass over the dominator
+// tree.
+//
+FunctionPass *createEarlyCSEPass(bool UseMemorySSA = false);
+
+//===----------------------------------------------------------------------===//
+//
+// GVNHoist - This pass performs a simple and fast GVN pass over the dominator
+// tree to hoist common expressions from sibling branches.
+//
+FunctionPass *createGVNHoistPass();
+
+//===----------------------------------------------------------------------===//
+//
+// GVNSink - This pass uses an "inverted" value numbering to decide the
+// similarity of expressions and sinks similar expressions into successors.
+//
+FunctionPass *createGVNSinkPass();
+
+//===----------------------------------------------------------------------===//
+//
+// MergedLoadStoreMotion - This pass merges loads and stores in diamonds. Loads
+// are hoisted into the header, while stores sink into the footer.
+//
+FunctionPass *createMergedLoadStoreMotionPass();
+
+//===----------------------------------------------------------------------===//
+//
+// GVN - This pass performs global value numbering and redundant load
+// elimination cotemporaneously.
+//
+FunctionPass *createNewGVNPass();
+
+//===----------------------------------------------------------------------===//
+//
+// DivRemPairs - Hoist/decompose integer division and remainder instructions.
+//
+FunctionPass *createDivRemPairsPass();
+
+//===----------------------------------------------------------------------===//
+//
+// MemCpyOpt - This pass performs optimizations related to eliminating memcpy
+// calls and/or combining multiple stores into memset's.
+//
+FunctionPass *createMemCpyOptPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopDeletion - This pass performs DCE of non-infinite loops that it
+// can prove are dead.
+//
+Pass *createLoopDeletionPass();
+
+//===----------------------------------------------------------------------===//
+//
+// ConstantHoisting - This pass prepares a function for expensive constants.
+//
+FunctionPass *createConstantHoistingPass();
+
+//===----------------------------------------------------------------------===//
+//
+// Sink - Code Sinking
+//
+FunctionPass *createSinkingPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LowerAtomic - Lower atomic intrinsics to non-atomic form
+//
+Pass *createLowerAtomicPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LowerGuardIntrinsic - Lower guard intrinsics to normal control flow.
+//
+Pass *createLowerGuardIntrinsicPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LowerWidenableCondition - Lower widenable condition to i1 true.
+//
+Pass *createLowerWidenableConditionPass();
+
+//===----------------------------------------------------------------------===//
+//
+// MergeICmps - Merge integer comparison chains into a memcmp
+//
+Pass *createMergeICmpsLegacyPass();
+
+//===----------------------------------------------------------------------===//
+//
+// ValuePropagation - Propagate CFG-derived value information
+//
+Pass *createCorrelatedValuePropagationPass();
+
+//===----------------------------------------------------------------------===//
+//
+// InferAddressSpaces - Modify users of addrspacecast instructions with values
+// in the source address space if using the destination address space is slower
+// on the target. If AddressSpace is left to its default value, it will be
+// obtained from the TargetTransformInfo.
+//
+FunctionPass *createInferAddressSpacesPass(unsigned AddressSpace = ~0u);
+extern char &InferAddressSpacesID;
+
+//===----------------------------------------------------------------------===//
+//
+// LowerExpectIntrinsics - Removes llvm.expect intrinsics and creates
+// "block_weights" metadata.
+FunctionPass *createLowerExpectIntrinsicPass();
+
+//===----------------------------------------------------------------------===//
+//
+// PartiallyInlineLibCalls - Tries to inline the fast path of library
+// calls such as sqrt.
+//
+FunctionPass *createPartiallyInlineLibCallsPass();
+
+//===----------------------------------------------------------------------===//
+//
+// SeparateConstOffsetFromGEP - Split GEPs for better CSE
+//
+FunctionPass *createSeparateConstOffsetFromGEPPass(bool LowerGEP = false);
+
+//===----------------------------------------------------------------------===//
+//
+// SpeculativeExecution - Aggressively hoist instructions to enable
+// speculative execution on targets where branches are expensive.
+//
+FunctionPass *createSpeculativeExecutionPass();
+
+// Same as createSpeculativeExecutionPass, but does nothing unless
+// TargetTransformInfo::hasBranchDivergence() is true.
+FunctionPass *createSpeculativeExecutionIfHasBranchDivergencePass();
+
+//===----------------------------------------------------------------------===//
+//
+// StraightLineStrengthReduce - This pass strength-reduces some certain
+// instruction patterns in straight-line code.
+//
+FunctionPass *createStraightLineStrengthReducePass();
+
+//===----------------------------------------------------------------------===//
+//
+// PlaceSafepoints - Rewrite any IR calls to gc.statepoints and insert any
+// safepoint polls (method entry, backedge) that might be required. This pass
+// does not generate explicit relocation sequences - that's handled by
+// RewriteStatepointsForGC which can be run at an arbitrary point in the pass
+// order following this pass.
+//
+FunctionPass *createPlaceSafepointsPass();
+
+//===----------------------------------------------------------------------===//
+//
+// RewriteStatepointsForGC - Rewrite any gc.statepoints which do not yet have
+// explicit relocations to include explicit relocations.
+//
+ModulePass *createRewriteStatepointsForGCLegacyPass();
+
+//===----------------------------------------------------------------------===//
+//
+// Float2Int - Demote floats to ints where possible.
+//
+FunctionPass *createFloat2IntPass();
+
+//===----------------------------------------------------------------------===//
+//
+// NaryReassociate - Simplify n-ary operations by reassociation.
+//
+FunctionPass *createNaryReassociatePass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopDistribute - Distribute loops.
+//
+FunctionPass *createLoopDistributePass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopFuse - Fuse loops.
+//
+FunctionPass *createLoopFusePass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopLoadElimination - Perform loop-aware load elimination.
+//
+FunctionPass *createLoopLoadEliminationPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopVersioning - Perform loop multi-versioning.
+//
+FunctionPass *createLoopVersioningPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopDataPrefetch - Perform data prefetching in loops.
+//
+FunctionPass *createLoopDataPrefetchPass();
+
+///===---------------------------------------------------------------------===//
+ModulePass *createNameAnonGlobalPass();
+ModulePass *createCanonicalizeAliasesPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LibCallsShrinkWrap - Shrink-wraps a call to function if the result is not
+// used.
+//
+FunctionPass *createLibCallsShrinkWrapPass();
+
+//===----------------------------------------------------------------------===//
+//
+// LoopSimplifyCFG - This pass performs basic CFG simplification on loops,
+// primarily to help other loop passes.
+//
+Pass *createLoopSimplifyCFGPass();
+
+//===----------------------------------------------------------------------===//
+//
+// WarnMissedTransformations - This pass emits warnings for leftover forced
+// transformations.
+//
+Pass *createWarnMissedTransformationsPass();
+} // End llvm namespace
+
+#endif