Add VirtRegMap::hasKnownPreference().
Virtual registers with a known preferred register are prioritized by
RAGreedy. This function makes the condition explicit without depending
on getRegAllocPref().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169179 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocGreedy.cpp b/lib/CodeGen/RegAllocGreedy.cpp
index 3d1b580..9942643 100644
--- a/lib/CodeGen/RegAllocGreedy.cpp
+++ b/lib/CodeGen/RegAllocGreedy.cpp
@@ -413,7 +413,7 @@
Prio = (1u << 31) + Size;
// Boost ranges that have a physical register hint.
- if (TargetRegisterInfo::isPhysicalRegister(VRM->getRegAllocPref(Reg)))
+ if (VRM->hasKnownPreference(Reg))
Prio |= (1u << 30);
}