SubclassOptionalData = BI.SubclassOptionalData;
}
+void BranchInst::swapSuccessors() {
+ assert(isConditional() &&
+ "Cannot swap successors of an unconditional branch");
+ Op<-1>().swap(Op<-2>());
+
+ // Update profile metadata if present and it matches our structural
+ // expectations.
+ MDNode *ProfileData = getMetadata(LLVMContext::MD_prof);
+ if (!ProfileData || ProfileData->getNumOperands() != 3)
+ return;
+
+ // The first operand is the name. Fetch them backwards and build a new one.
+ Value *Ops[] = {
+ ProfileData->getOperand(0),
+ ProfileData->getOperand(2),
+ ProfileData->getOperand(1)
+ };
+ setMetadata(LLVMContext::MD_prof,
+ MDNode::get(ProfileData->getContext(), Ops));
+}
+
BasicBlock *BranchInst::getSuccessorV(unsigned idx) const {
return getSuccessor(idx);
}
return false;
}
}
- }
- else if (!isa<UndefValue>(Mask) && !isa<ConstantAggregateZero>(Mask))
+ } else if (!isa<UndefValue>(Mask) && !isa<ConstantAggregateZero>(Mask)) {
+ // The bitcode reader can create a place holder for a forward reference
+ // used as the shuffle mask. When this occurs, the shuffle mask will
+ // fall into this case and fail. To avoid this error, do this bit of
+ // ugliness to allow such a mask pass.
+ if (const ConstantExpr* CE = dyn_cast<ConstantExpr>(Mask)) {
+ if (CE->getOpcode() == Instruction::UserOp1)
+ return true;
+ }
return false;
-
+ }
return true;
}