From 9112829d76cbb8e0c8ef51bbc2d7d1be48cd7b74 Mon Sep 17 00:00:00 2001 From: rdivacky Date: Tue, 13 Jul 2010 17:19:57 +0000 Subject: Update LLVM to r108243. --- include/llvm/CodeGen/MachineBasicBlock.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include/llvm/CodeGen/MachineBasicBlock.h') diff --git a/include/llvm/CodeGen/MachineBasicBlock.h b/include/llvm/CodeGen/MachineBasicBlock.h index cc651ca..3cfc47a 100644 --- a/include/llvm/CodeGen/MachineBasicBlock.h +++ b/include/llvm/CodeGen/MachineBasicBlock.h @@ -19,6 +19,7 @@ namespace llvm { +class Pass; class BasicBlock; class MachineFunction; class MCSymbol; @@ -258,6 +259,11 @@ public: /// machine basic block (i.e., copies all the successors fromMBB and /// remove all the successors from fromMBB). void transferSuccessors(MachineBasicBlock *fromMBB); + + /// transferSuccessorsAndUpdatePHIs - Transfers all the successors, as + /// in transferSuccessors, and update PHI operands in the successor blocks + /// which refer to fromMBB to refer to this. + void transferSuccessorsAndUpdatePHIs(MachineBasicBlock *fromMBB); /// isSuccessor - Return true if the specified MBB is a successor of this /// block. @@ -276,11 +282,26 @@ public: /// branch to do so (e.g., a table jump). True is a conservative answer. bool canFallThrough(); + /// Returns a pointer to the first instructon in this block that is not a + /// PHINode instruction. When adding instruction to the beginning of the + /// basic block, they should be added before the returned value, not before + /// the first instruction, which might be PHI. + /// Returns end() is there's no non-PHI instruction. + iterator getFirstNonPHI(); + /// getFirstTerminator - returns an iterator to the first terminator /// instruction of this basic block. If a terminator does not exist, /// it returns end() iterator getFirstTerminator(); + /// SplitCriticalEdge - Split the critical edge from this block to the + /// given successor block, and return the newly created block, or null + /// if splitting is not possible. + /// + /// This function updates LiveVariables, MachineDominatorTree, and + /// MachineLoopInfo, as applicable. + MachineBasicBlock *SplitCriticalEdge(MachineBasicBlock *Succ, Pass *P); + void pop_front() { Insts.pop_front(); } void pop_back() { Insts.pop_back(); } void push_back(MachineInstr *MI) { Insts.push_back(MI); } -- cgit v1.1