Revert "CodeGen: Use references in MachineTraceMetrics::Trace, NFC"

This reverts commit r261509.  I'm not sure how this compiled locally,
but something was out of whack.

llvm-svn: 261510

1 files changed, 6 insertions, 6 deletions

diff --git a/llvm/include/llvm/CodeGen/MachineTraceMetrics.h b/llvm/include/llvm/CodeGen/MachineTraceMetrics.h
index 06db17abaed..4cd3810afd4 100644
--- a/llvm/include/llvm/CodeGen/MachineTraceMetrics.h
+++ b/llvm/include/llvm/CodeGen/MachineTraceMetrics.h
@@ -276,24 +276,24 @@ public:
     /// Return the depth and height of MI. The depth is only valid for
     /// instructions in or above the trace center block. The height is only
     /// valid for instructions in or below the trace center block.
-    InstrCycles getInstrCycles(const MachineInstr &MI) const {
-      return TE.Cycles.lookup(&MI);
+    InstrCycles getInstrCycles(const MachineInstr *MI) const {
+      return TE.Cycles.lookup(MI);
     }
 
     /// Return the slack of MI. This is the number of cycles MI can be delayed
     /// before the critical path becomes longer.
     /// MI must be an instruction in the trace center block.
-    unsigned getInstrSlack(const MachineInstr &MI) const;
+    unsigned getInstrSlack(const MachineInstr *MI) const;
 
     /// Return the Depth of a PHI instruction in a trace center block successor.
     /// The PHI does not have to be part of the trace.
-    unsigned getPHIDepth(const MachineInstr &PHI) const;
+    unsigned getPHIDepth(const MachineInstr *PHI) const;
 
     /// A dependence is useful if the basic block of the defining instruction
     /// is part of the trace of the user instruction. It is assumed that DefMI
     /// dominates UseMI (see also isUsefulDominator).
-    bool isDepInTrace(const MachineInstr &DefMI,
-                      const MachineInstr &UseMI) const;
+    bool isDepInTrace(const MachineInstr *DefMI,
+                      const MachineInstr *UseMI) const;
   };
 
   /// A trace ensemble is a collection of traces selected using the same