Move PBQP off allocation_order_begin. No functional change intended.

I think PBQP could use RegisterClassInfo, but it didn't fit neatly with
the external interfaces that PBQP uses, so I'll leave that to Lang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133186 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/RegAllocPBQP.cpp b/lib/CodeGen/RegAllocPBQP.cpp
index 1e1f1e0d347024ca0bafbd475d00783fe4da0f5a..605507f014d6d75e39162f05d9443592bcb009a6 100644 (file)
--- a/lib/CodeGen/RegAllocPBQP.cpp
+++ b/lib/CodeGen/RegAllocPBQP.cpp
@@ -222,10 +222,9 @@ std::auto_ptr<PBQPRAProblem> PBQPBuilder::build(MachineFunction *mf,
     // Compute an initial allowed set for the current vreg.
     typedef std::vector<unsigned> VRAllowed;
     VRAllowed vrAllowed;
-    for (TargetRegisterClass::iterator aoItr = trc->allocation_order_begin(*mf),
-                                       aoEnd = trc->allocation_order_end(*mf);
-         aoItr != aoEnd; ++aoItr) {
-      unsigned preg = *aoItr;
+    ArrayRef<unsigned> rawOrder = trc->getRawAllocationOrder(*mf);
+    for (unsigned i = 0; i != rawOrder.size(); ++i) {
+      unsigned preg = rawOrder[i];
       if (!reservedRegs.test(preg)) {
         vrAllowed.push_back(preg);
       }
@@ -581,7 +580,7 @@ void RegAllocPBQP::finalizeAlloc() const {
 
     if (physReg == 0) {
       const TargetRegisterClass *liRC = mri->getRegClass(li->reg);
-      physReg = *liRC->allocation_order_begin(*mf);
+      physReg = liRC->getRawAllocationOrder(*mf).front();
     }
 
     vrm->assignVirt2Phys(li->reg, physReg);