//
//===----------------------------------------------------------------------===//
-#include "llvm/Analysis/AssumptionTracker.h"
+#include "llvm/Analysis/AssumptionCache.h"
#include "llvm/Analysis/CodeMetrics.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/Support/Debug.h"
+#include "llvm/Support/raw_ostream.h"
#define DEBUG_TYPE "code-metrics"
const Value *V = WorkSet.front();
WorkSet.erase(WorkSet.begin());
- if (!Visited.insert(V))
+ if (!Visited.insert(V).second)
continue;
// If all uses of this value are ephemeral, then so is this value.
- bool FoundNEUse = false;
- for (const User *I : V->users())
- if (!EphValues.count(I)) {
- FoundNEUse = true;
- break;
- }
-
- if (FoundNEUse)
+ if (!std::all_of(V->user_begin(), V->user_end(),
+ [&](const User *U) { return EphValues.count(U); }))
continue;
EphValues.insert(V);
}
// Find all ephemeral values.
-void CodeMetrics::collectEphemeralValues(const Loop *L, AssumptionTracker *AT,
- SmallPtrSetImpl<const Value*> &EphValues) {
+void CodeMetrics::collectEphemeralValues(
+ const Loop *L, AssumptionCache *AC,
+ SmallPtrSetImpl<const Value *> &EphValues) {
SmallVector<const Value *, 16> WorkSet;
- for (auto &I : AT->assumptions(L->getHeader()->getParent())) {
+ for (auto &AssumeVH : AC->assumptions()) {
+ if (!AssumeVH)
+ continue;
+ Instruction *I = cast<Instruction>(AssumeVH);
+
// Filter out call sites outside of the loop so we don't to a function's
// worth of work for each of its loops (and, in the common case, ephemeral
// values in the loop are likely due to @llvm.assume calls in the loop).
completeEphemeralValues(WorkSet, EphValues);
}
-void CodeMetrics::collectEphemeralValues(const Function *F, AssumptionTracker *AT,
- SmallPtrSetImpl<const Value*> &EphValues) {
+void CodeMetrics::collectEphemeralValues(
+ const Function *F, AssumptionCache *AC,
+ SmallPtrSetImpl<const Value *> &EphValues) {
SmallVector<const Value *, 16> WorkSet;
- for (auto &I : AT->assumptions(const_cast<Function*>(F)))
+ for (auto &AssumeVH : AC->assumptions()) {
+ if (!AssumeVH)
+ continue;
+ Instruction *I = cast<Instruction>(AssumeVH);
+ assert(I->getParent()->getParent() == F &&
+ "Found assumption for the wrong function!");
WorkSet.push_back(I);
+ }
completeEphemeralValues(WorkSet, EphValues);
}
for (BasicBlock::const_iterator II = BB->begin(), E = BB->end();
II != E; ++II) {
// Skip ephemeral values.
- if (EphValues.count(II))
+ if (EphValues.count(&*II))
continue;
// Special handling for calls.
if (isa<ExtractElementInst>(II) || II->getType()->isVectorTy())
++NumVectorInsts;
+ if (II->getType()->isTokenTy() && II->isUsedOutsideOfBlock(BB))
+ notDuplicatable = true;
+
if (const CallInst *CI = dyn_cast<CallInst>(II))
if (CI->cannotDuplicate())
notDuplicatable = true;