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Diffstat (limited to 'lib/Transforms/Utils/LCSSA.cpp')
-rw-r--r--lib/Transforms/Utils/LCSSA.cpp27
1 files changed, 9 insertions, 18 deletions
diff --git a/lib/Transforms/Utils/LCSSA.cpp b/lib/Transforms/Utils/LCSSA.cpp
index e90c30bba78e2..275b26508f991 100644
--- a/lib/Transforms/Utils/LCSSA.cpp
+++ b/lib/Transforms/Utils/LCSSA.cpp
@@ -47,7 +47,7 @@ STATISTIC(NumLCSSA, "Number of live out of a loop variables");
namespace {
struct LCSSA : public LoopPass {
static char ID; // Pass identification, replacement for typeid
- LCSSA() : LoopPass(&ID) {}
+ LCSSA() : LoopPass(ID) {}
// Cached analysis information for the current function.
DominatorTree *DT;
@@ -64,22 +64,13 @@ namespace {
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesCFG();
- // LCSSA doesn't actually require LoopSimplify, but the PassManager
- // doesn't know how to schedule LoopSimplify by itself.
- AU.addRequiredID(LoopSimplifyID);
- AU.addPreservedID(LoopSimplifyID);
- AU.addRequiredTransitive<LoopInfo>();
- AU.addPreserved<LoopInfo>();
- AU.addRequiredTransitive<DominatorTree>();
- AU.addPreserved<ScalarEvolution>();
+ AU.addRequired<DominatorTree>();
AU.addPreserved<DominatorTree>();
-
- // Request DominanceFrontier now, even though LCSSA does
- // not use it. This allows Pass Manager to schedule Dominance
- // Frontier early enough such that one LPPassManager can handle
- // multiple loop transformation passes.
- AU.addRequired<DominanceFrontier>();
AU.addPreserved<DominanceFrontier>();
+ AU.addRequired<LoopInfo>();
+ AU.addPreserved<LoopInfo>();
+ AU.addPreservedID(LoopSimplifyID);
+ AU.addPreserved<ScalarEvolution>();
}
private:
bool ProcessInstruction(Instruction *Inst,
@@ -99,10 +90,10 @@ namespace {
}
char LCSSA::ID = 0;
-static RegisterPass<LCSSA> X("lcssa", "Loop-Closed SSA Form Pass");
+INITIALIZE_PASS(LCSSA, "lcssa", "Loop-Closed SSA Form Pass", false, false);
Pass *llvm::createLCSSAPass() { return new LCSSA(); }
-const PassInfo *const llvm::LCSSAID = &X;
+char &llvm::LCSSAID = LCSSA::ID;
/// BlockDominatesAnExit - Return true if the specified block dominates at least
@@ -215,7 +206,7 @@ bool LCSSA::ProcessInstruction(Instruction *Inst,
DomTreeNode *DomNode = DT->getNode(DomBB);
SSAUpdater SSAUpdate;
- SSAUpdate.Initialize(Inst);
+ SSAUpdate.Initialize(Inst->getType(), Inst->getName());
// Insert the LCSSA phi's into all of the exit blocks dominated by the
// value, and add them to the Phi's map.