llvm/unittests/Transforms
Erik Eckstein 345d21cba1 Make the FunctionComparator of the MergeFunctions pass a stand-alone utility.
This is pure refactoring. NFC.

This change moves the FunctionComparator (together with the GlobalNumberState
utility) in to a separate file so that it can be used by other passes.
For example, the SwiftMergeFunctions pass in the Swift compiler:
https://github.com/apple/swift/blob/master/lib/LLVMPasses/LLVMMergeFunctions.cpp

Details of the change:

*) The big part is just moving code out of MergeFunctions.cpp into FunctionComparator.h/cpp
*) Make FunctionComparator member functions protected (instead of private)
   so that a derived comparator class can use them.

Following refactoring helps to share code between the base FunctionComparator
class and a derived class:

*) Add a beginCompare() function
*) Move some basic function property comparisons into a separate function compareSignature()
*) Do the GEP comparison inside cmpOperations() which now has a new
   needToCmpOperands reference parameter

https://reviews.llvm.org/D25385



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286632 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-11 21:15:13 +00:00
..
IPO IR: New representation for CFI and virtual call optimization pass metadata. 2016-06-24 21:21:32 +00:00
Utils Make the FunctionComparator of the MergeFunctions pass a stand-alone utility. 2016-11-11 21:15:13 +00:00
CMakeLists.txt Introduce bitset metadata format and bitset lowering pass. 2015-02-20 20:30:47 +00:00