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Tobias Grosser 336734aca6 Add new RegionInfo pass. 
The RegionInfo pass detects single entry single exit regions in a function,
where a region is defined as any subgraph that is connected to the remaining
graph at only two spots.
Furthermore an hierarchical region tree is built.
Use it by calling "opt -regions analyze" or "opt -view-regions".

llvm-svn: 109089
 		2010-07-22 07:46:31 +00:00
clang Fix PR7673 by allowing an empty clobbers section in an ASM statement. 2010-07-22 07:11:21 +00:00
compiler-rt Hand-tuning of single-precision soft-float comparison routines for ARM 2010-07-08 17:45:05 +00:00
libcxx A good start on extended posix regex. Loops working. Alternation working. Also update by-chapter completeness summary. 2010-07-16 19:08:36 +00:00
lldb Modified both the ObjectFileMachO and ObjectFileELF to correctly set the 2010-07-21 22:54:26 +00:00
llvm Add new RegionInfo pass. 2010-07-22 07:46:31 +00:00