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authorDuncan Sands <baldrick@free.fr>2011-01-18 11:50:19 +0000
committerDuncan Sands <baldrick@free.fr>2011-01-18 11:50:19 +0000
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For completeness, generalize the (X + Y) - Y -> X transform and add X - (X + 1) -> -1.
These were not recommended by my auto-simplifier since they don't fire often enough. However they do fire from time to time, for example they remove one subtraction from the final bitcode for 483.xalancbmk. llvm-svn: 123755
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