X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FTarget%2FMRegisterInfo.h;h=2db4f2031bd7c47d17371e7101778f67fde96169;hb=c651e4c51e11feb58e6c12fee8a8f85631269f2f;hp=1e118c150580c950069df8368d96eeb1c6d72406;hpb=50aadb96932a0f81ed69f73da6e7c8f8a453ee75;p=oota-llvm.git

diff --git a/include/llvm/Target/MRegisterInfo.h b/include/llvm/Target/MRegisterInfo.h
index 1e118c15058..2db4f2031bd 100644
--- a/include/llvm/Target/MRegisterInfo.h
+++ b/include/llvm/Target/MRegisterInfo.h
@@ -321,6 +321,22 @@ public:
     return areAliases(regA, regB);
   }
 
+  /// isSubRegister - Returns true if regB is a sub-register of regA.
+  ///
+  bool isSubRegister(unsigned regA, unsigned regB) const {
+    for (const unsigned *SR = getSubRegisters(regA); *SR; ++SR)
+      if (*SR == regB) return true;
+    return false;
+  }
+
+  /// isSuperRegister - Returns true if regB is a super-register of regA.
+  ///
+  bool isSuperRegister(unsigned regA, unsigned regB) const {
+    for (const unsigned *SR = getSuperRegisters(regA); *SR; ++SR)
+      if (*SR == regB) return true;
+    return false;
+  }
+
   /// getCalleeSavedRegs - Return a null-terminated list of all of the
   /// callee saved registers on this target. The register should be in the
   /// order of desired callee-save stack frame offset. The first register is