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7 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
4e53a40ea3 Implement LiveRangeCalc::extendToUses() and createDeadDefs(). 
These LiveRangeCalc methods are to be used when computing a live range
from scratch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158027 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-06-05 21:54:09 +00:00
Jakob Stoklund Olesen
631390e3c2 Pass context pointers to LiveRangeCalc::reset(). 
Remove the same pointers from all the other LiveRangeCalc functions,
simplifying the interface.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157941 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-06-04 18:21:16 +00:00
Jakob Stoklund Olesen
3b1088a2cc 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%.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149763 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-04 05:20:49 +00:00
Lang Hames
aa13482784 Fix assert condition. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146987 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-20 20:23:40 +00:00
Jakob Stoklund Olesen
ee5655dca4 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().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139604 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-13 16:47:56 +00:00
NAKAMURA Takumi
edd4f8ba4b Unbreak msvc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139581 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-13 03:58:34 +00:00
Jakob Stoklund Olesen
b5a457c4cb 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139572 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-13 01:34:21 +00:00