MCRegisterInfo-ize getMatchingSuperReg.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152044 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 11 insertions, 4 deletions

diff --git a/include/llvm/MC/MCRegisterInfo.h b/include/llvm/MC/MCRegisterInfo.h
index ddf355e..2e5968d 100644
--- a/include/llvm/MC/MCRegisterInfo.h
+++ b/include/llvm/MC/MCRegisterInfo.h
@@ -248,6 +248,16 @@ public:
     return *(SubRegIndices + (Reg - 1) * NumSubRegIndices + Idx - 1);
   }
 
+  /// getMatchingSuperReg - Return a super-register of the specified register
+  /// Reg so its sub-register of index SubIdx is Reg.
+  unsigned getMatchingSuperReg(unsigned Reg, unsigned SubIdx,
+                               const MCRegisterClass *RC) const {
+    for (const unsigned *SRs = getSuperRegisters(Reg); unsigned SR = *SRs;++SRs)
+      if (Reg == getSubReg(SR, SubIdx) && RC->contains(SR))
+        return SR;
+    return 0;
+  }
+
   /// getSubRegIndex - For a given register pair, return the sub-register index
   /// if the second register is a sub-register of the first. Return zero
   /// otherwise.
diff --git a/include/llvm/Target/TargetRegisterInfo.h b/include/llvm/Target/TargetRegisterInfo.h
index 0cef350..c6e3086 100644
--- a/include/llvm/Target/TargetRegisterInfo.h
+++ b/include/llvm/Target/TargetRegisterInfo.h
@@ -387,10 +387,7 @@ public:
   /// Reg so its sub-register of index SubIdx is Reg.
   unsigned getMatchingSuperReg(unsigned Reg, unsigned SubIdx,
                                const TargetRegisterClass *RC) const {
-    for (const uint16_t *SRs = getSuperRegisters(Reg); unsigned SR = *SRs;++SRs)
-      if (Reg == getSubReg(SR, SubIdx) && RC->contains(SR))
-        return SR;
-    return 0;
+    return MCRegisterInfo::getMatchingSuperReg(Reg, SubIdx, RC->MC);
   }
 
   /// canCombineSubRegIndices - Given a register class and a list of