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

[Chris Lattner]

Changes in directory llvm/include/llvm/Target:

MRegisterInfo.h updated: 1.79 -> 1.80
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Log message:

update comment


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Diffs of the changes:  (+2 -8)

 MRegisterInfo.h |   10 ++--------
 1 files changed, 2 insertions(+), 8 deletions(-)


Index: llvm/include/llvm/Target/MRegisterInfo.h
diff -u llvm/include/llvm/Target/MRegisterInfo.h:1.79 llvm/include/llvm/Target/MRegisterInfo.h:1.80
--- llvm/include/llvm/Target/MRegisterInfo.h:1.79	Fri Jul 21 15:57:35 2006
+++ llvm/include/llvm/Target/MRegisterInfo.h	Thu Aug  3 13:57:28 2006
@@ -208,20 +208,14 @@
 public:
 
   enum {                        // Define some target independent constants
-    /// NoRegister - This 'hard' register is a 'noop' register for all backends.
-    /// This is used as the destination register for instructions that do not
-    /// produce a value.  Some frontends may use this as an operand register to
-    /// mean special things, for example, the Sparc backend uses R0 to mean %g0
-    /// which always PRODUCES the value 0.  The X86 backend does not use this
-    /// value as an operand register, except for memory references.
-    ///
+    /// NoRegister - This physical register is not a real target register.  It
+    /// is useful as a sentinal.
     NoRegister = 0,
 
     /// FirstVirtualRegister - This is the first register number that is
     /// considered to be a 'virtual' register, which is part of the SSA
     /// namespace.  This must be the same for all targets, which means that each
     /// target is limited to 1024 registers.
-    ///
     FirstVirtualRegister = 1024
   };