Make dense maps keyed on physical registers smallerusing
MRegisterInfo::getNumRegs() instead of
MRegisterInfo::FirstVirtualRegister.

Also use MRegisterInfo::is{Physical,Virtual}Register where
appropriate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11477 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocLocal.cpp b/lib/CodeGen/RegAllocLocal.cpp
index f9abd68..1ca7f0c 100644
--- a/lib/CodeGen/RegAllocLocal.cpp
+++ b/lib/CodeGen/RegAllocLocal.cpp
@@ -53,7 +53,7 @@
     std::vector<unsigned> Virt2PhysRegMap;
 
     unsigned &getVirt2PhysRegMapSlot(unsigned VirtReg) {
-      assert(VirtReg >= MRegisterInfo::FirstVirtualRegister &&"Illegal VREG #");
+      assert(MRegisterInfo::isVirtualRegister(VirtReg) &&"Illegal VREG #");
       assert(VirtReg-MRegisterInfo::FirstVirtualRegister <Virt2PhysRegMap.size()
              && "VirtReg not in map!");
       return Virt2PhysRegMap[VirtReg-MRegisterInfo::FirstVirtualRegister];