Changes in directory llvm/include/llvm/CodeGen:
MachineBasicBlock.h updated: 1.58 -> 1.59
---
Log message:
Add a flag to MBBs to indicate whether it is an eh landing pad.
---
Diffs of the changes: (+18 -1)
MachineBasicBlock.h | 19 ++++++++++++++++++-
1 files changed, 18 insertions(+), 1 deletion(-)
Index: llvm/include/llvm/CodeGen/MachineBasicBlock.h
diff -u llvm/include/llvm/CodeGen/MachineBasicBlock.h:1.58
llvm/include/llvm/CodeGen/MachineBasicBlock.h:1.59
--- llvm/include/llvm/CodeGen/MachineBasicBlock.h:1.58 Mon Feb 19 15:49:53 2007
+++ llvm/include/llvm/CodeGen/MachineBasicBlock.h Wed Feb 21 16:39:52 2007
@@ -74,10 +74,15 @@
/// LiveIns - Keep track of the physical registers that are livein of
/// the basicblock.
std::vector<unsigned> LiveIns;
+
+ /// IsLandingPad - Indicate that this basic block is entered via an
+ /// exception handler.
+ bool IsLandingPad;
public:
MachineBasicBlock(const BasicBlock *bb = 0) : Prev(0), Next(0), BB(bb),
- Number(-1), Parent(0) {
+ Number(-1), Parent(0),
+ IsLandingPad(false) {
Insts.parent = this;
}
@@ -152,6 +157,18 @@
const_livein_iterator livein_end() const { return LiveIns.end(); }
bool livein_empty() const { return LiveIns.empty(); }
+ /// isLandingPad - Returns true if the block is a landing pad. That is
+ /// this basic block is entered via an exception handler.
+ bool isLandingPad() const { return IsLandingPad; }
+
+ /// setIsLandingPad - Indicates the block is a landing pad. That is
+ /// this basic block is entered via an exception handler.
+ void setIsLandingPad() { IsLandingPad = true; }
+
+ /// isAccessable - Returns true if the block is alive. That is, if it has
+ /// predecessors or is an eh landing pad.
+ bool isAccessable() const { return !pred_empty() || isLandingPad(); }
+
// Code Layout methods.
/// moveBefore/moveAfter - move 'this' block before or after the specified
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