Chris Lattner cf078f2b20 Allow loop-idiom to run on multiple BB loops, but still only scan the loop ... header for now for memset/memcpy opportunities. It turns out that loop-rotate is successfully rotating loops, but *DOESN'T MERGE THE BLOCKS*, turning "for loops" into 2 basic block loops that loop-idiom was ignoring. With this fix, we form many *many* more memcpy and memsets than before, including on the "history" loops in the viterbi benchmark, which look like this: for (j=0; j<MAX_history; ++j) { history_new[i][j+1] = history[2*i][j]; } Transforming these loops into memcpy's speeds up the viterbi benchmark from 11.98s to 3.55s on my machine. Woo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122685 91177308-0d34-0410-b5e6-96231b3b80d8		2011-01-02 07:58:36 +00:00
..
Analysis	-enable-tbaa is on by default now.	2010-12-16 02:53:48 +00:00
Archive
Assembler
Bindings/Ocaml	XFAIL vg_leak the new test as the rest.	2010-12-23 21:22:09 +00:00
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CodeGen	Fix darwin bots.	2011-01-01 21:58:41 +00:00
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MC	Fix PR8878.	2011-01-01 19:05:35 +00:00
Other
Scripts	Print all 64bits for st_value and st_size. Adjust tests accordingly.	2010-12-20 20:49:43 +00:00
TableGen	Add support for using the `!if' operator when initializing variables:	2010-12-13 01:46:19 +00:00
Transforms	Allow loop-idiom to run on multiple BB loops, but still only scan the loop	2011-01-02 07:58:36 +00:00
Unit
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lit.cfg	Revert 122341. It breaks some darwin tests.	2010-12-21 17:25:43 +00:00
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