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55 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen ad6b22eb16 Don't store COPY pointers in VNInfo. 
If a value is defined by a COPY, that instuction can easily and cheaply
be found by getInstructionFromIndex(VNI->def).

This reduces the size of VNInfo from 24 to 16 bytes, and improves
llc compile time by 3%.

llvm-svn: 149763
 2012-02-04 05:20:49 +00:00
Lang Hames 6cee53d06e Fix assert condition. 
llvm-svn: 146987
 2011-12-20 20:23:40 +00:00
Jakob Stoklund Olesen 0494c5c35d Switch extendInBlock() to take a kill slot instead of the last use slot. 
Three out of four clients prefer this interface which is consistent with
extendIntervalEndTo() and LiveRangeCalc::extend().

llvm-svn: 139604
 2011-09-13 16:47:56 +00:00
NAKAMURA Takumi cac923b556 Unbreak msvc. 
llvm-svn: 139581
 2011-09-13 03:58:34 +00:00
Jakob Stoklund Olesen 487f2a37bf Extract live range calculations from SplitKit. 
SplitKit will soon need two copies of these data structures, and the
algorithms will also be useful when LiveIntervalAnalysis becomes
independent of LiveVariables.

llvm-svn: 139572
 2011-09-13 01:34:21 +00:00