[llvm-commits] CVS: llvm/include/llvm/CodeGen/LiveInterval.h

[Evan Cheng]

Changes in directory llvm/include/llvm/CodeGen:

LiveInterval.h updated: 1.35 -> 1.36
---
Log message:

Add a register allocation preference field; add a method to compute size of a live interval.

---
Diffs of the changes:  (+6 -1)

 LiveInterval.h |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletion(-)


Index: llvm/include/llvm/CodeGen/LiveInterval.h
diff -u llvm/include/llvm/CodeGen/LiveInterval.h:1.35 llvm/include/llvm/CodeGen/LiveInterval.h:1.36
--- llvm/include/llvm/CodeGen/LiveInterval.h:1.35	Tue Mar 20 03:13:50 2007
+++ llvm/include/llvm/CodeGen/LiveInterval.h	Tue Apr 17 15:25:11 2007
@@ -81,6 +81,7 @@
   struct LiveInterval {
     typedef SmallVector<LiveRange,4> Ranges;
     unsigned reg;        // the register of this interval
+    unsigned preference; // preferred register to allocate for this interval
     float weight;        // weight of this interval
     MachineInstr* remat; // definition if the definition rematerializable
     Ranges ranges;       // the ranges in which this register is live
@@ -94,7 +95,7 @@
   public:
 
     LiveInterval(unsigned Reg, float Weight)
-      : reg(Reg), weight(Weight), remat(NULL) {
+      : reg(Reg), preference(0), weight(Weight), remat(NULL) {
     }
 
     typedef Ranges::iterator iterator;
@@ -256,6 +257,10 @@
       removeRange(LR.start, LR.end);
     }
 
+    /// getSize - Returns the sum of sizes of all the LiveRange's.
+    ///
+    unsigned getSize() const;
+
     bool operator<(const LiveInterval& other) const {
       return beginNumber() < other.beginNumber();
     }