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
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Analysis	Revert commit 122654 at the request of Chris, who reckons that instsimplify	2011-01-01 20:08:02 +00:00
Archive
AsmParser
Bitcode
CodeGen	Use getVRegDef() instead of def_iterator. This leads to fewer defs being added	2010-12-30 00:42:23 +00:00
CompilerDriver
ExecutionEngine
Linker	include the module identifier when emitting this warning, PR8865.	2010-12-30 02:49:45 +00:00
MC	Fix PR8878.	2011-01-01 19:05:35 +00:00
Object
Support
Target	Allow loop-idiom to run on multiple BB loops, but still only scan the loop	2011-01-02 07:58:36 +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
VMCore
Makefile