| 1 | //===- DomConditionCache.cpp ----------------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "llvm/Analysis/DomConditionCache.h" |
| 10 | #include "llvm/Analysis/ValueTracking.h" |
| 11 | using namespace llvm; |
| 12 | |
| 13 | static void findAffectedValues(Value *Cond, |
| 14 | SmallVectorImpl<Value *> &Affected) { |
| 15 | auto InsertAffected = [&Affected](Value *V) { Affected.push_back(Elt: V); }; |
| 16 | findValuesAffectedByCondition(Cond, /*IsAssume=*/false, InsertAffected); |
| 17 | } |
| 18 | |
| 19 | void DomConditionCache::registerBranch(BranchInst *BI) { |
| 20 | assert(BI->isConditional() && "Must be conditional branch"); |
| 21 | SmallVector<Value *, 16> Affected; |
| 22 | findAffectedValues(Cond: BI->getCondition(), Affected); |
| 23 | for (Value *V : Affected) { |
| 24 | auto &AV = AffectedValues[V]; |
| 25 | if (!is_contained(Range&: AV, Element: BI)) |
| 26 | AV.push_back(Elt: BI); |
| 27 | } |
| 28 | } |
| 29 |