#include "llvm/Analysis/Passes.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Verifier.h"
-#include "llvm/PassManager.h"
+#include "llvm/IR/LegacyPassManager.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetSubtargetInfo.h"
#include "llvm/Transforms/IPO.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Vectorize.h"
RunLoopRerolling("reroll-loops", cl::Hidden,
cl::desc("Run the loop rerolling pass"));
+static cl::opt<bool>
+RunFloat2Int("float-to-int", cl::Hidden, cl::init(true),
+ cl::desc("Run the float2int (float demotion) pass"));
+
static cl::opt<bool> RunLoadCombine("combine-loads", cl::init(false),
cl::Hidden,
cl::desc("Run the load combining pass"));
EnableMLSM("mlsm", cl::init(true), cl::Hidden,
cl::desc("Enable motion of merged load and store"));
+static cl::opt<bool> EnableLoopInterchange(
+ "enable-loopinterchange", cl::init(false), cl::Hidden,
+ cl::desc("Enable the new, experimental LoopInterchange Pass"));
+
+static cl::opt<bool> EnableLoopDistribute(
+ "enable-loop-distribute", cl::init(false), cl::Hidden,
+ cl::desc("Enable the new, experimental LoopDistribution Pass"));
+
PassManagerBuilder::PassManagerBuilder() {
OptLevel = 2;
SizeLevel = 0;
LibraryInfo = nullptr;
Inliner = nullptr;
- DisableTailCalls = false;
DisableUnitAtATime = false;
DisableUnrollLoops = false;
BBVectorize = RunBBVectorization;
DisableGVNLoadPRE = false;
VerifyInput = false;
VerifyOutput = false;
- StripDebug = false;
MergeFunctions = false;
}
}
void PassManagerBuilder::addExtensionsToPM(ExtensionPointTy ETy,
- PassManagerBase &PM) const {
+ legacy::PassManagerBase &PM) const {
for (unsigned i = 0, e = GlobalExtensions->size(); i != e; ++i)
if ((*GlobalExtensions)[i].first == ETy)
(*GlobalExtensions)[i].second(*this, PM);
Extensions[i].second(*this, PM);
}
-void
-PassManagerBuilder::addInitialAliasAnalysisPasses(PassManagerBase &PM) const {
+void PassManagerBuilder::addInitialAliasAnalysisPasses(
+ legacy::PassManagerBase &PM) const {
// Add TypeBasedAliasAnalysis before BasicAliasAnalysis so that
// BasicAliasAnalysis wins if they disagree. This is intended to help
// support "obvious" type-punning idioms.
PM.add(createBasicAliasAnalysisPass());
}
-void PassManagerBuilder::populateFunctionPassManager(FunctionPassManager &FPM) {
+void PassManagerBuilder::populateFunctionPassManager(
+ legacy::FunctionPassManager &FPM) {
addExtensionsToPM(EP_EarlyAsPossible, FPM);
// Add LibraryInfo if we have some.
FPM.add(createLowerExpectIntrinsicPass());
}
-void PassManagerBuilder::populateModulePassManager(PassManagerBase &MPM) {
+void PassManagerBuilder::populateModulePassManager(
+ legacy::PassManagerBase &MPM) {
// If all optimizations are disabled, just run the always-inline pass and,
// if enabled, the function merging pass.
if (OptLevel == 0) {
MPM.add(createInstructionCombiningPass()); // Combine silly seq's
addExtensionsToPM(EP_Peephole, MPM);
- if (!DisableTailCalls)
- MPM.add(createTailCallEliminationPass()); // Eliminate tail calls
+ MPM.add(createTailCallEliminationPass()); // Eliminate tail calls
MPM.add(createCFGSimplificationPass()); // Merge & remove BBs
MPM.add(createReassociatePass()); // Reassociate expressions
// Rotate Loop - disable header duplication at -Oz
MPM.add(createIndVarSimplifyPass()); // Canonicalize indvars
MPM.add(createLoopIdiomPass()); // Recognize idioms like memset.
MPM.add(createLoopDeletionPass()); // Delete dead loops
-
+ if (EnableLoopInterchange) {
+ MPM.add(createLoopInterchangePass()); // Interchange loops
+ MPM.add(createCFGSimplificationPass());
+ }
if (!DisableUnrollLoops)
MPM.add(createSimpleLoopUnrollPass()); // Unroll small loops
addExtensionsToPM(EP_LoopOptimizerEnd, MPM);
MPM.add(createMemCpyOptPass()); // Remove memcpy / form memset
MPM.add(createSCCPPass()); // Constant prop with SCCP
+ // Delete dead bit computations (instcombine runs after to fold away the dead
+ // computations, and then ADCE will run later to exploit any new DCE
+ // opportunities that creates).
+ MPM.add(createBitTrackingDCEPass()); // Delete dead bit computations
+
// Run instcombine after redundancy elimination to exploit opportunities
// opened up by them.
MPM.add(createInstructionCombiningPass());
MPM.add(createJumpThreadingPass()); // Thread jumps
MPM.add(createCorrelatedValuePropagationPass());
MPM.add(createDeadStoreEliminationPass()); // Delete dead stores
+ MPM.add(createLICMPass());
addExtensionsToPM(EP_ScalarOptimizerLate, MPM);
// we must insert a no-op module pass to reset the pass manager.
MPM.add(createBarrierNoopPass());
+ if (RunFloat2Int)
+ MPM.add(createFloat2IntPass());
+
// Re-rotate loops in all our loop nests. These may have fallout out of
// rotated form due to GVN or other transformations, and the vectorizer relies
// on the rotated form.
- if (ExtraVectorizerPasses)
- MPM.add(createLoopRotatePass());
+ MPM.add(createLoopRotatePass());
+
+ // Distribute loops to allow partial vectorization. I.e. isolate dependences
+ // into separate loop that would otherwise inhibit vectorization.
+ if (EnableLoopDistribute)
+ MPM.add(createLoopDistributePass());
MPM.add(createLoopVectorizePass(DisableUnrollLoops, LoopVectorize));
// FIXME: Because of #pragma vectorize enable, the passes below are always
MPM.add(createCFGSimplificationPass());
MPM.add(createInstructionCombiningPass());
- if (!DisableUnrollLoops)
+ if (!DisableUnrollLoops) {
MPM.add(createLoopUnrollPass()); // Unroll small loops
+ // LoopUnroll may generate some redundency to cleanup.
+ MPM.add(createInstructionCombiningPass());
+
+ // Runtime unrolling will introduce runtime check in loop prologue. If the
+ // unrolled loop is a inner loop, then the prologue will be inside the
+ // outer loop. LICM pass can help to promote the runtime check out if the
+ // checked value is loop invariant.
+ MPM.add(createLICMPass());
+ }
+
// After vectorization and unrolling, assume intrinsics may tell us more
// about pointer alignments.
MPM.add(createAlignmentFromAssumptionsPass());
addExtensionsToPM(EP_OptimizerLast, MPM);
}
-void PassManagerBuilder::addLTOOptimizationPasses(PassManagerBase &PM) {
+void PassManagerBuilder::addLTOOptimizationPasses(legacy::PassManagerBase &PM) {
// Provide AliasAnalysis services for optimizations.
addInitialAliasAnalysisPasses(PM);
// More loops are countable; try to optimize them.
PM.add(createIndVarSimplifyPass());
PM.add(createLoopDeletionPass());
+ if (EnableLoopInterchange)
+ PM.add(createLoopInterchangePass());
+
PM.add(createLoopVectorizePass(true, LoopVectorize));
// More scalar chains could be vectorized due to more alias information
addExtensionsToPM(EP_Peephole, PM);
PM.add(createJumpThreadingPass());
+}
+void PassManagerBuilder::addLateLTOOptimizationPasses(
+ legacy::PassManagerBase &PM) {
// Delete basic blocks, which optimization passes may have killed.
PM.add(createCFGSimplificationPass());
PM.add(createMergeFunctionsPass());
}
-void PassManagerBuilder::populateLTOPassManager(PassManagerBase &PM,
- TargetMachine *TM) {
- if (TM) {
- PM.add(new DataLayoutPass());
- TM->addAnalysisPasses(PM);
- }
-
+void PassManagerBuilder::populateLTOPassManager(legacy::PassManagerBase &PM) {
if (LibraryInfo)
PM.add(new TargetLibraryInfoWrapperPass(*LibraryInfo));
if (VerifyInput)
PM.add(createVerifierPass());
- if (StripDebug)
- PM.add(createStripSymbolsPass(true));
+ if (OptLevel > 1)
+ addLTOOptimizationPasses(PM);
- if (VerifyInput)
- PM.add(createDebugInfoVerifierPass());
+ // Lower bit sets to globals. This pass supports Clang's control flow
+ // integrity mechanisms (-fsanitize=cfi*) and needs to run at link time if CFI
+ // is enabled. The pass does nothing if CFI is disabled.
+ PM.add(createLowerBitSetsPass());
if (OptLevel != 0)
- addLTOOptimizationPasses(PM);
+ addLateLTOOptimizationPasses(PM);
- if (VerifyOutput) {
+ if (VerifyOutput)
PM.add(createVerifierPass());
- PM.add(createDebugInfoVerifierPass());
- }
}
inline PassManagerBuilder *unwrap(LLVMPassManagerBuilderRef P) {
LLVMPassManagerBuilderPopulateFunctionPassManager(LLVMPassManagerBuilderRef PMB,
LLVMPassManagerRef PM) {
PassManagerBuilder *Builder = unwrap(PMB);
- FunctionPassManager *FPM = unwrap<FunctionPassManager>(PM);
+ legacy::FunctionPassManager *FPM = unwrap<legacy::FunctionPassManager>(PM);
Builder->populateFunctionPassManager(*FPM);
}
LLVMPassManagerBuilderPopulateModulePassManager(LLVMPassManagerBuilderRef PMB,
LLVMPassManagerRef PM) {
PassManagerBuilder *Builder = unwrap(PMB);
- PassManagerBase *MPM = unwrap(PM);
+ legacy::PassManagerBase *MPM = unwrap(PM);
Builder->populateModulePassManager(*MPM);
}
LLVMBool Internalize,
LLVMBool RunInliner) {
PassManagerBuilder *Builder = unwrap(PMB);
- PassManagerBase *LPM = unwrap(PM);
+ legacy::PassManagerBase *LPM = unwrap(PM);
// A small backwards compatibility hack. populateLTOPassManager used to take
// an RunInliner option.
projects / oota-llvm.git / blobdiff