Remove VirtRegMap::getRegAllocPref().

Now that there can be multiple hint registers from targets, it doesn't
make sense to have a function that returns 'the' preferred register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169190 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/CodeGen/VirtRegMap.h b/include/llvm/CodeGen/VirtRegMap.h
index f5357a4099a5e364709179fefbdb3e24a3b96ee3..3bc6ebd563f292b84f2d9f256141098071f3eb9d 100644 (file)
--- a/include/llvm/CodeGen/VirtRegMap.h
+++ b/include/llvm/CodeGen/VirtRegMap.h
@@ -126,9 +126,6 @@ namespace llvm {
       grow();
     }
 
-    /// @brief returns the register allocation preference.
-    unsigned getRegAllocPref(unsigned virtReg);
-
     /// @brief returns true if VirtReg is assigned to its preferred physreg.
     bool hasPreferredPhys(unsigned VirtReg);
 

diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp
index 820eed083b70a98e3c7df8f566e0dbff445d169f..cd012d2974891dff32cc01aa84a5dbeb8becb181 100644 (file)
--- a/lib/CodeGen/VirtRegMap.cpp
+++ b/lib/CodeGen/VirtRegMap.cpp
@@ -77,17 +77,6 @@ unsigned VirtRegMap::createSpillSlot(const TargetRegisterClass *RC) {
   return SS;
 }
 
-unsigned VirtRegMap::getRegAllocPref(unsigned virtReg) {
-  std::pair<unsigned, unsigned> Hint = MRI->getRegAllocationHint(virtReg);
-  unsigned physReg = Hint.second;
-  if (TargetRegisterInfo::isVirtualRegister(physReg) && hasPhys(physReg))
-    physReg = getPhys(physReg);
-  if (Hint.first == 0)
-    return (TargetRegisterInfo::isPhysicalRegister(physReg))
-      ? physReg : 0;
-  return TRI->ResolveRegAllocHint(Hint.first, physReg, *MF);
-}
-
 bool VirtRegMap::hasPreferredPhys(unsigned VirtReg) {
   unsigned Hint = MRI->getSimpleHint(VirtReg);
   if (!Hint)