switch the register iterator to act more like hte LLVM value iterator: dereferencing

it now returns the machineinstr of the use.  To get the operand, use I.getOperand().

Add a new MachineRegisterInfo::replaceRegWith, which is basically like
Value::replaceAllUsesWith.

llvm-svn: 45482

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index 43cc66d2370..0de5501b78d 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -1,4 +1,4 @@
-//===-- MachineInstr.cpp --------------------------------------------------===//
+//===-- lib/CodeGen/MachineInstr.cpp --------------------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //