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2 Commits

Author SHA1 Message Date
David Majnemer
e2cf8f21e0 InstSimplify: Optimize away pointless comparisons 
(X & INT_MIN) ? X & INT_MAX : X  into  X & INT_MAX
(X & INT_MIN) ? X : X & INT_MAX  into  X
(X & INT_MIN) ? X | INT_MIN : X  into  X
(X & INT_MIN) ? X : X | INT_MIN  into  X | INT_MIN

llvm-svn: 224669
 2014-12-20 03:04:38 +00:00
David Majnemer
d9ae958b9b InstSimplify: Restore optimizations lost in r210006 
This restores our ability to optimize:
(X & C) ? X & ~C : X  into  X & ~C
(X & C) ? X : X & ~C  into  X
(X & C) ? X | C : X  into  X
(X & C) ? X : X | C  into  X | C

llvm-svn: 222868
 2014-11-27 06:32:46 +00:00