Clarify that higher priority means higher values.

[oota-llvm.git] / include / llvm / Target / Target.td

diff --git a/include/llvm/Target/Target.td b/include/llvm/Target/Target.td
index d7356293a0f18d1e30f51211f0b2882caf07b75a..1ff8db8c2e68aaf994e0d0018bbe15717719801e 100644 (file)
--- a/include/llvm/Target/Target.td
+++ b/include/llvm/Target/Target.td
@@ -209,9 +209,9 @@ class RegisterClass<string namespace, list<ValueType> regTypes, int alignment,
   code AltOrderSelect = [{}];
 
   // Specify allocation priority for register allocators using a greedy
-  // heuristic. Classes with high priority are assigned first. It is sometimes
-  // beneficial to assign registers to highly constrained classes first.
-  // The priority has to be in the range [0,63].
+  // heuristic. Classes with higher priority values are assigned first. This is
+  // useful as it is sometimes beneficial to assign registers to highly
+  // constrained classes first. The value has to be in the range [0,63].
   int AllocationPriority = 0;
 }