Simon Pilgrim 643050a88e Revert: r296141 [APInt] Add APInt::extractBits() method to extract APInt subrange ... The current pattern for extract bits in range is typically: Mask.lshr(BitOffset).trunc(SubSizeInBits); Which can be particularly slow for large APInts (MaskSizeInBits > 64) as they require the allocation of memory for the temporary variable. This is another of the compile time issues identified in PR32037 (see also D30265). This patch adds the APInt::extractBits() helper method which avoids the temporary memory allocation. Differential Revision: https://reviews.llvm.org/D30336 llvm-svn: 296147		2017-02-24 18:31:04 +00:00
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llvm	Revert: r296141 [APInt] Add APInt::extractBits() method to extract APInt subrange	2017-02-24 18:31:04 +00:00
llvm-c	[GVN] Initial check-in of a new global value numbering algorithm.	2016-12-22 16:03:48 +00:00