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Reapply 68073, with fixes. EH Landing-pad basic blocks are not

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entered via fall-through. Don't miss fallthroughs from blocks
terminated by conditional branches. Also, move
isOnlyReachableByFallthrough out of line.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68129 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2009-03-31 18:39:13 +00:00
parent 46801029ea
commit 968dc7a207
3 changed files with 19 additions and 1 deletions
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include/llvm/CodeGen/MachineBasicBlock.h
+5
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@@ -253,6 +253,11 @@ 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;
void pop_front() { Insts.pop_front(); }
void pop_back() { Insts.pop_back(); }
void push_back(MachineInstr *MI) { Insts.push_back(MI); }