Greg Clayton a98fde5d70 <rdar://problem/11819635> ...

llvm-svn: 159844

2012-07-06 17:58:01 +00:00

clang

Stop using new[] on llvm::BumpPtrAllocator.

2012-07-06 16:41:59 +00:00

compiler-rt

tsan: Go lang: symbolize stack traces

2012-07-06 14:54:25 +00:00

debuginfo-tests

Fix this for buggy gdb behavior alongside the change

2012-06-05 18:16:03 +00:00

libclc

configure.py: Add an install rule.

2012-06-01 17:29:59 +00:00

libcxx

This commit establishes a new bucket_count policy in the unordered containers: The policy now allows a power-of-2 number of buckets to be requested (and that request honored) by the client. And if the number of buckets is set to a power of 2, then the constraint of the hash to the number of buckets uses & instead of %. If the client does not specify a number of buckets, then the policy remains unchanged: a prime number of buckets is selected. The growth policy is that the number of buckets is roughly doubled when needed. While growing, either the prime, or the power-of-2 strategy will be preserved. There is a small run time cost for putting in this switch. For very cheap hash functions, e.g. identity for int, the cost can be as high as 18%. However with more typical use cases, e.g. strings, the cost is in the noise level. I've measured cases with very cheap hash functions (int) that using a power-of-2 number of buckets can make look up about twice as fast. However I've also noted that a power-of-2 number of buckets is more susceptible to accidental catastrophic collisions. Though I've also noted that accidental catastrophic collisions are also possible when using a prime number of buckets (but seems far less likely). In short, this patch adds an extra tuning knob for those clients trying to get the last bit of performance squeezed out of their hash containers. Casual users of the hash containers will not notice the introduction of this tuning knob. Those clients who swear by power-of-2 hash containers can now opt-in to that strategy. Clients who prefer a prime number of buckets can continue as they have.

2012-07-06 17:31:14 +00:00

libcxxabi

Don't dereference root in __parse_ctor_dtor_name unless it is known to not be null.

2012-06-15 21:57:51 +00:00

lld

Add missing LLVMSupport

2012-07-04 02:16:35 +00:00

lldb

<rdar://problem/11819635>

2012-07-06 17:58:01 +00:00

llvm

Remove trailing comma in array initialization list.

2012-07-06 17:49:19 +00:00

polly

Update libGPURuntime to be dual licensed under MIT and UIUC license.

2012-07-06 10:40:15 +00:00

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