From e67f5e42734199a1f4771773417699262491eb86 Mon Sep 17 00:00:00 2001 From: Bill Wendling Date: Tue, 31 Mar 2009 08:41:31 +0000 Subject: Oy! When reverting r68073, I added in experimental code. Sorry... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68099 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/CodeGen/MachineBasicBlock.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include') diff --git a/include/llvm/CodeGen/MachineBasicBlock.h b/include/llvm/CodeGen/MachineBasicBlock.h index 1ba7e798f8..f962273d2b 100644 --- a/include/llvm/CodeGen/MachineBasicBlock.h +++ b/include/llvm/CodeGen/MachineBasicBlock.h @@ -253,6 +253,15 @@ public: /// it returns end() iterator getFirstTerminator(); + /// isOnlyReachableViaFallthough - Return true if this basic block has + /// exactly one predecessor and the control transfer mechanism between + /// the predecessor and this block is a fall-through. + bool isOnlyReachableByFallthrough() const { + return !pred_empty() && + next(pred_begin()) == pred_end() && + (*pred_begin())->getFirstTerminator() == (*pred_begin())->end(); + } + void pop_front() { Insts.pop_front(); } void pop_back() { Insts.pop_back(); } void push_back(MachineInstr *MI) { Insts.push_back(MI); } -- cgit v1.2.3-18-g5258