#include "llvm/Analysis/CodeMetrics.h"
#include "llvm/Analysis/LoopPass.h"
#include "llvm/Analysis/ScalarEvolution.h"
-#include "llvm/DataLayout.h"
-#include "llvm/IntrinsicInst.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/IntrinsicInst.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
/// ApproximateLoopSize - Approximate the size of the loop.
static unsigned ApproximateLoopSize(const Loop *L, unsigned &NumCalls,
- const DataLayout *TD) {
+ bool &NotDuplicatable, const DataLayout *TD) {
CodeMetrics Metrics;
for (Loop::block_iterator I = L->block_begin(), E = L->block_end();
I != E; ++I)
Metrics.analyzeBasicBlock(*I, TD);
NumCalls = Metrics.NumInlineCandidates;
+ NotDuplicatable = Metrics.notDuplicatable;
unsigned LoopSize = Metrics.NumInsts;
// not user specified.
unsigned Threshold = CurrentThreshold;
if (!UserThreshold &&
- Header->getParent()->getFnAttributes().
- hasAttribute(Attributes::OptimizeForSize))
+ Header->getParent()->getAttributes().
+ hasAttribute(AttributeSet::FunctionIndex,
+ Attribute::OptimizeForSize))
Threshold = OptSizeUnrollThreshold;
// Find trip count and trip multiple if count is not available
if (Threshold != NoThreshold) {
const DataLayout *TD = getAnalysisIfAvailable<DataLayout>();
unsigned NumInlineCandidates;
- unsigned LoopSize = ApproximateLoopSize(L, NumInlineCandidates, TD);
+ bool notDuplicatable;
+ unsigned LoopSize = ApproximateLoopSize(L, NumInlineCandidates,
+ notDuplicatable, TD);
DEBUG(dbgs() << " Loop Size = " << LoopSize << "\n");
+ if (notDuplicatable) {
+ DEBUG(dbgs() << " Not unrolling loop which contains non duplicatable"
+ << " instructions.\n");
+ return false;
+ }
if (NumInlineCandidates != 0) {
DEBUG(dbgs() << " Not unrolling loop with inlinable calls.\n");
return false;