Max Kazantsev 5cbed866a3 [SCEV] Use depth limit instead of local cache for SExt and ZExt ... In rL300494 there was an attempt to deal with excessive compile time on invocations of getSign/ZeroExtExpr using local caching. This approach only helps if we request the same SCEV multiple times throughout recursion. But in the bug PR33431 we see a case where we request different values all the time, so caching does not help and the size of the cache grows enormously. In this patch we remove the local cache for this methods and add the recursion depth limit instead, as we do for arithmetics. This gives us a guarantee that the invocation sequence is limited and reasonably short. Differential Revision: https://reviews.llvm.org/D34273 llvm-svn: 306785		2017-06-30 05:04:09 +00:00
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llvm	[SCEV] Use depth limit instead of local cache for SExt and ZExt	2017-06-30 05:04:09 +00:00
llvm-c	[ORC] Re-apply r306166 and r306168 with fix for regression test.	2017-06-23 23:25:28 +00:00