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

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/CodeGen/RegAllocSimple.cpp b/lib/CodeGen/RegAllocSimple.cpp
index e313004ff4..a81edda858 100644
--- a/lib/CodeGen/RegAllocSimple.cpp
+++ b/lib/CodeGen/RegAllocSimple.cpp
@@ -154,7 +154,7 @@ void RegAllocSimple::AllocateBasicBlock(MachineBasicBlock &MBB) {
     // Made to combat the incorrect allocation of r2 = add r1, r1
     std::map<unsigned, unsigned> Virt2PhysRegMap;
 
-    RegsUsed.resize(MRegisterInfo::FirstVirtualRegister);
+    RegsUsed.resize(RegInfo->getNumRegs());
     
     // a preliminary pass that will invalidate any registers that
     // are used by the instruction (including implicit uses)