Chandler Carruth 9ffb97e631 Introduce a loop block rotation optimization to the new block placement ... pass. This is designed to achieve one of the important optimizations that the old code placement pass did, but more simply. This is a somewhat rough and *very* conservative version of the transform. We could get a lot fancier here if there are profitable cases to do so. In particular, this only looks for a single pattern, it insists that the loop backedge being rotated away is the last backedge in the chain, and it doesn't provide any means of doing better in-loop placement due to the rotation. However, it appears that it will handle the important loops I am finding in the LLVM test suite. llvm-svn: 145158		2011-11-27 00:38:03 +00:00
clang	Add the minimum implementation of cpuid.h. This works on "modern" intel cpus	2011-11-26 20:53:19 +00:00
compiler-rt	platform/clang_darwin: Fix a refacto and commento.	2011-11-17 17:47:22 +00:00
debuginfo-tests	Testcase for r133065	2011-06-15 17:57:23 +00:00
libcxx	Clarify building instructions for 10.7	2011-11-17 17:14:16 +00:00
libcxxabi	reformatted to match Clang style; thanks to John McCall for the nudge	2011-08-15 18:06:47 +00:00
lldb	Shrink-to-fit our std::vector<DWARFDebugInfoEntry> collections and save 20%	2011-11-22 21:35:27 +00:00
llvm	Introduce a loop block rotation optimization to the new block placement	2011-11-27 00:38:03 +00:00
polly	test: Do not hardcode '.so' as library suffix	2011-11-22 19:40:38 +00:00