+ // Check for side effects.
+ for (Loop::block_iterator I = L->block_begin(), E = L->block_end();
+ I != E; ++I) {
+ BasicBlock *BB = *I;
+
+ assert(DT->dominates(Header, BB));
+ if (DT->properlyDominates(SplitCondition->getParent(), BB))
+ continue;
+
+ for (BasicBlock::iterator BI = BB->begin(), BE = BB->end();
+ BI != BE; ++BI) {
+ Instruction *Inst = BI;
+
+ if (!Inst->isSafeToSpeculativelyExecute() && !isa<PHINode>(Inst)
+ && !isa<BranchInst>(Inst) && !isa<DbgInfoIntrinsic>(Inst))
+ return false;
+ }
+ }
+