diff options
Diffstat (limited to 'lib/Target/WebAssembly/WebAssemblyFixIrreducibleControlFlow.cpp')
| -rw-r--r-- | lib/Target/WebAssembly/WebAssemblyFixIrreducibleControlFlow.cpp | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/lib/Target/WebAssembly/WebAssemblyFixIrreducibleControlFlow.cpp b/lib/Target/WebAssembly/WebAssemblyFixIrreducibleControlFlow.cpp index 88daea7e3681..bea027be7711 100644 --- a/lib/Target/WebAssembly/WebAssemblyFixIrreducibleControlFlow.cpp +++ b/lib/Target/WebAssembly/WebAssemblyFixIrreducibleControlFlow.cpp @@ -8,7 +8,7 @@ //===----------------------------------------------------------------------===// /// /// \file -/// \brief This file implements a pass that transforms irreducible control flow +/// This file implements a pass that transforms irreducible control flow /// into reducible control flow. Irreducible control flow means multiple-entry /// loops; they appear as CFG cycles that are not recorded in MachineLoopInfo /// due to being unnatural. @@ -71,6 +71,9 @@ public: } // end anonymous namespace char WebAssemblyFixIrreducibleControlFlow::ID = 0; +INITIALIZE_PASS(WebAssemblyFixIrreducibleControlFlow, DEBUG_TYPE, + "Removes irreducible control flow", false, false) + FunctionPass *llvm::createWebAssemblyFixIrreducibleControlFlow() { return new WebAssemblyFixIrreducibleControlFlow(); } @@ -136,7 +139,7 @@ bool WebAssemblyFixIrreducibleControlFlow::VisitLoop(MachineFunction &MF, MachineBasicBlock *Header = Loop ? Loop->getHeader() : &*MF.begin(); SetVector<MachineBasicBlock *> RewriteSuccs; - // DFS through Loop's body, looking for for irreducible control flow. Loop is + // DFS through Loop's body, looking for irreducible control flow. Loop is // natural, and we stay in its body, and we treat any nested loops // monolithically, so any cycles we encounter indicate irreducibility. SmallPtrSet<MachineBasicBlock *, 8> OnStack; @@ -174,7 +177,7 @@ bool WebAssemblyFixIrreducibleControlFlow::VisitLoop(MachineFunction &MF, if (LLVM_LIKELY(RewriteSuccs.empty())) return false; - DEBUG(dbgs() << "Irreducible control flow detected!\n"); + LLVM_DEBUG(dbgs() << "Irreducible control flow detected!\n"); // Ok. We have irreducible control flow! Create a dispatch block which will // contains a jump table to any block in the problematic set of blocks. @@ -205,7 +208,8 @@ bool WebAssemblyFixIrreducibleControlFlow::VisitLoop(MachineFunction &MF, continue; unsigned Index = MIB.getInstr()->getNumExplicitOperands() - 1; - DEBUG(dbgs() << printMBBReference(*MBB) << " has index " << Index << "\n"); + LLVM_DEBUG(dbgs() << printMBBReference(*MBB) << " has index " << Index + << "\n"); Pair.first->second = Index; for (auto Pred : MBB->predecessors()) @@ -264,9 +268,9 @@ bool WebAssemblyFixIrreducibleControlFlow::VisitLoop(MachineFunction &MF, bool WebAssemblyFixIrreducibleControlFlow::runOnMachineFunction( MachineFunction &MF) { - DEBUG(dbgs() << "********** Fixing Irreducible Control Flow **********\n" - "********** Function: " - << MF.getName() << '\n'); + LLVM_DEBUG(dbgs() << "********** Fixing Irreducible Control Flow **********\n" + "********** Function: " + << MF.getName() << '\n'); bool Changed = false; auto &MLI = getAnalysis<MachineLoopInfo>(); @@ -284,7 +288,7 @@ bool WebAssemblyFixIrreducibleControlFlow::runOnMachineFunction( // If we made any changes, completely recompute everything. if (LLVM_UNLIKELY(Changed)) { - DEBUG(dbgs() << "Recomputing dominators and loops.\n"); + LLVM_DEBUG(dbgs() << "Recomputing dominators and loops.\n"); MF.getRegInfo().invalidateLiveness(); MF.RenumberBlocks(); getAnalysis<MachineDominatorTree>().runOnMachineFunction(MF); |