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5 Commits

Author SHA1 Message Date
Xinliang David Li 19fb5b467b [PGO] add MST min edge selection heuristic to ensure non-zero entry count 
Differential Revision: http://reviews.llvm.org/D41059

llvm-svn: 320998
 2017-12-18 17:56:19 +00:00
Xinliang David Li d91057bf52 Revert r320104: infinite loop profiling bug fix 
Causes unexpected memory issue with New PM this time.
The new PM invalidates BPI but not BFI, leaving the
reference to BPI from BFI invalid.

Abandon this patch.  There is a more general solution
which also handles runtime infinite loop (but not statically).

llvm-svn: 320180
 2017-12-08 19:38:07 +00:00
Xinliang David Li 4b0027f671 [PGO] detect infinite loop and form MST properly 
Differential Revision: http://reviews.llvm.org/D40873

llvm-svn: 320104
 2017-12-07 22:23:28 +00:00
Xinliang David Li 45c819063a Revert r319794: [PGO] detect infinite loop and form MST properly: memory leak problem 
llvm-svn: 319841
 2017-12-05 21:54:01 +00:00
Xinliang David Li cc35bc9efc [PGO] detect infinite loop and form MST properly 
Differential Revision: http://reviews.llvm.org/D40702

llvm-svn: 319794
 2017-12-05 17:19:41 +00:00