Michael Zolotukhin 37162adf3e [SCEV] createAddRecFromPHI: Optimize for the most common case. ... Summary: The existing implementation creates a symbolic SCEV expression every time we analyze a phi node and then has to remove it, when the analysis is finished. This is very expensive, and in most of the cases it's also unnecessary. According to the data I collected, ~60-70% of analyzed phi nodes (measured on SPEC) have the following form: PN = phi(Start, OP(Self, Constant)) Handling such cases separately significantly speeds this up. Reviewers: sanjoy, pete Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D32663 llvm-svn: 302096		2017-05-03 23:53:38 +00:00
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llvm	[SCEV] createAddRecFromPHI: Optimize for the most common case.	2017-05-03 23:53:38 +00:00
llvm-c	Introduce LLVMDIBuilderRef	2017-04-20 14:22:47 +00:00