[PATCH] D15692: [X86] Reduce complexity of the LEA optimization pass

[George Burgess IV via llvm-commits]

george.burgess.iv added a subscriber: george.burgess.iv.
george.burgess.iv added a comment.

Thanks for this! Just one tiny nit.


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Comment at: lib/Target/X86/X86OptimizeLEAs.cpp:93
@@ -88,1 +92,3 @@
 
+  std::unordered_map<const MachineInstr *, unsigned> InstrPos;
+
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Is there a reason that we can't use `DenseMap` here instead?


http://reviews.llvm.org/D15692