Hal Finkel 5e637e4e5d BBVectorize: Don't over-search when building the dependency map
When building the pairable-instruction dependency map, don't search
past the last pairable instruction. For large blocks that have been
divided into multiple instruction groups, searching past the last
instruction in each group is very wasteful. This gives a 32% speedup
on the csa.ll test case from PR15222 (when using 50 instructions
in each group).

No functionality change intended.

llvm-svn: 174915
2013-02-11 23:02:17 +00:00
..
2013-02-09 01:11:01 +00:00