Mercurial > hg > CbC > CbC_llvm

comparison lib/IR/BasicBlock.cpp @ 134:3a76565eade5 LLVM5.0.1

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update 5.0.1
author mir3636
date Sat, 17 Feb 2018 09:57:20 +0900
parents 803732b1fca8
children c2174574ed3a
comparison
equal deleted inserted replaced
133:c60214abe0e8 134:3a76565eade5
262 } 262 }
263 return SuccBB; 263 return SuccBB;
264 } 264 }
265 265
266 iterator_range<BasicBlock::phi_iterator> BasicBlock::phis() { 266 iterator_range<BasicBlock::phi_iterator> BasicBlock::phis() {
267 return make_range<phi_iterator>(dyn_cast<PHINode>(&front()), nullptr); 267 PHINode *P = empty() ? nullptr : dyn_cast<PHINode>(&*begin());
268 return make_range<phi_iterator>(P, nullptr);
268 } 269 }
269 270
270 /// This method is used to notify a BasicBlock that the 271 /// This method is used to notify a BasicBlock that the
271 /// specified Predecessor of the block is no longer able to reach it. This is 272 /// specified Predecessor of the block is no longer able to reach it. This is
272 /// actually not used to update the Predecessor list, but is actually used to 273 /// actually not used to update the Predecessor list, but is actually used to
445 446
446 /// Return the landingpad instruction associated with the landing pad. 447 /// Return the landingpad instruction associated with the landing pad.
447 const LandingPadInst *BasicBlock::getLandingPadInst() const { 448 const LandingPadInst *BasicBlock::getLandingPadInst() const {
448 return dyn_cast<LandingPadInst>(getFirstNonPHI()); 449 return dyn_cast<LandingPadInst>(getFirstNonPHI());
449 } 450 }
451
452 Optional<uint64_t> BasicBlock::getIrrLoopHeaderWeight() const {
453 const TerminatorInst *TI = getTerminator();
454 if (MDNode *MDIrrLoopHeader =
455 TI->getMetadata(LLVMContext::MD_irr_loop)) {
456 MDString *MDName = cast<MDString>(MDIrrLoopHeader->getOperand(0));
457 if (MDName->getString().equals("loop_header_weight")) {
458 auto *CI = mdconst::extract<ConstantInt>(MDIrrLoopHeader->getOperand(1));
459 return Optional<uint64_t>(CI->getValue().getZExtValue());
460 }
461 }
462 return Optional<uint64_t>();
463 }