MachineInstr: Change return value of getOpcode() to unsigned.

This was previously returning int. However there are no negative opcode
numbers and more importantly this was needlessly different from
MCInstrDesc::getOpcode() (which even is the value returned here) and
SDValue::getOpcode()/SDNode::getOpcode().

llvm-svn: 237611

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/ShrinkWrap.cpp b/llvm/lib/CodeGen/ShrinkWrap.cpp
index 56f1200619c..e1869b30343 100644
--- a/llvm/lib/CodeGen/ShrinkWrap.cpp
+++ b/llvm/lib/CodeGen/ShrinkWrap.cpp
@@ -106,9 +106,9 @@ class ShrinkWrap : public MachineFunctionPass {
   /// Frequency of the Entry block.
   uint64_t EntryFreq;
   /// Current opcode for frame setup.
-  int FrameSetupOpcode;
+  unsigned FrameSetupOpcode;
   /// Current opcode for frame destroy.
-  int FrameDestroyOpcode;
+  unsigned FrameDestroyOpcode;
   /// Entry block.
   const MachineBasicBlock *Entry;