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Author SHA1 Message Date
Manman Ren f0499ba991 TBAA: remove !tbaa from testing cases if not used. 
This will make it easier to turn on struct-path aware TBAA since the metadata
format will change.

llvm-svn: 180745
 2013-04-29 22:58:55 +00:00
Andrew Trick f1ff84c64e misched: Infrastructure for weak DAG edges. 
This adds support for weak DAG edges to the general scheduling
infrastructure in preparation for MachineScheduler support for
heuristics based on weak edges.

llvm-svn: 167738
 2012-11-12 19:28:57 +00:00
Andrew Trick 344fb64fa3 sched: fix latency of memory dependence chain edges for consistency. 
For store->load dependencies that may alias, we should always use
TrueMemOrderLatency, which may eventually become a subtarget hook. In
effect, we should guarantee at least TrueMemOrderLatency on at least
one DAG path from a store to a may-alias load.

This should fix the standard mode as well as -enable-aa-sched-mi".

llvm-svn: 158380
 2012-06-13 02:39:03 +00:00