[llvm-commits] CVS: llvm/include/llvm/Target/MRegisterInfo.h

[Evan Cheng]

Changes in directory llvm/include/llvm/Target:

MRegisterInfo.h updated: 1.106 -> 1.107
---
Log message:

Test if a register is sub- or super-register of another.

---
Diffs of the changes:  (+16 -0)

 MRegisterInfo.h |   16 ++++++++++++++++
 1 files changed, 16 insertions(+)


Index: llvm/include/llvm/Target/MRegisterInfo.h
diff -u llvm/include/llvm/Target/MRegisterInfo.h:1.106 llvm/include/llvm/Target/MRegisterInfo.h:1.107
--- llvm/include/llvm/Target/MRegisterInfo.h:1.106	Fri Apr 20 19:54:06 2007
+++ llvm/include/llvm/Target/MRegisterInfo.h	Wed Apr 25 02:24:50 2007
@@ -321,6 +321,22 @@
     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