[llvm-commits] [llvm] r161180 - /llvm/trunk/include/llvm/Target/TargetRegisterInfo.h

[Jakob Stoklund Olesen]

Author: stoklund
Date: Thu Aug  2 09:45:53 2012
New Revision: 161180

URL: http://llvm.org/viewvc/llvm-project?rev=161180&view=rev
Log:
Add TargetRegisterInfo::hasRegUnit().

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

Modified:
    llvm/trunk/include/llvm/Target/TargetRegisterInfo.h

Modified: llvm/trunk/include/llvm/Target/TargetRegisterInfo.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Target/TargetRegisterInfo.h?rev=161180&r1=161179&r2=161180&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Target/TargetRegisterInfo.h (original)
+++ llvm/trunk/include/llvm/Target/TargetRegisterInfo.h Thu Aug  2 09:45:53 2012
@@ -349,6 +349,14 @@
     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 {