From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Thu, 2 Aug 2012 14:45:53 +0000 (+0000)
Subject: Add TargetRegisterInfo::hasRegUnit().
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=28897ca434892340f2e188a0331db92d5899409b;p=oota-llvm.git

Add TargetRegisterInfo::hasRegUnit().

This trivial helper function tests if a register contains a register
unit. It is similar to regsOverlap(), but with asymmetric arguments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161180 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Target/TargetRegisterInfo.h b/include/llvm/Target/TargetRegisterInfo.h
index a70b8f6cbdb..df4d900e4c8 100644
--- a/include/llvm/Target/TargetRegisterInfo.h
+++ b/include/llvm/Target/TargetRegisterInfo.h
@@ -349,6 +349,14 @@ public:
     return false;
   }
 
+  /// hasRegUnit - Returns true if Reg contains RegUnit.
+  bool hasRegUnit(unsigned Reg, unsigned RegUnit) const {
+    for (MCRegUnitIterator Units(Reg, this); Units.isValid(); ++Units)
+      if (*Units == RegUnit)
+        return true;
+    return false;
+  }
+
   /// isSubRegister - Returns true if regB is a sub-register of regA.
   ///
   bool isSubRegister(unsigned regA, unsigned regB) const {