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[NFC] Promote DFS to field for further use 

llvm-svn: 354118
This commit is contained in:
Max Kazantsev 2019-02-15 11:39:35 +00:00
parent 6ce08672fb
commit 136f09bea1
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/Transforms/Scalar/LoopSimplifyCFG.cpp
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@ -90,6 +90,7 @@ private:
ScalarEvolution &SE;
MemorySSAUpdater *MSSAU;
DomTreeUpdater DTU;
LoopBlocksDFS DFS;
SmallVector<DominatorTree::UpdateType, 16> DTUpdates;
// Whether or not the current loop has irreducible CFG.
@ -176,7 +177,6 @@ private:
/// Fill all information about status of blocks and exits of the current loop
/// if constant folding of all branches will be done.
void analyze() {
LoopBlocksDFS DFS(&L);
DFS.perform(&LI);
assert(DFS.isComplete() && "DFS is expected to be finished");
@ -498,7 +498,7 @@ public:
ConstantTerminatorFoldingImpl(Loop &L, LoopInfo &LI, DominatorTree &DT,
ScalarEvolution &SE,
MemorySSAUpdater *MSSAU)
: L(L), LI(LI), DT(DT), SE(SE), MSSAU(MSSAU),
: L(L), LI(LI), DT(DT), SE(SE), MSSAU(MSSAU), DFS(&L),
DTU(DT, DomTreeUpdater::UpdateStrategy::Eager) {}
bool run() {
assert(L.getLoopLatch() && "Should be single latch!");