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from 67dfc6a Prepare shared_ptr for array support new 92a2a71 loop splitting

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Summary of changes: gcc/ChangeLog | 17 + gcc/Makefile.in | 1 + gcc/common.opt | 4 + gcc/doc/invoke.texi | 7 +- gcc/doc/passes.texi | 6 + gcc/opts.c | 3 + gcc/passes.def | 1 + gcc/testsuite/ChangeLog | 6 + gcc/testsuite/gcc.dg/loop-split.c | 147 +++++++ gcc/testsuite/gcc.dg/tree-ssa/ifc-10.c | 2 +- gcc/testsuite/gcc.dg/tree-ssa/ifc-9.c | 2 +- gcc/timevar.def | 1 + gcc/tree-pass.h | 1 + gcc/tree-ssa-loop-manip.h | 2 + gcc/tree-ssa-loop-split.c | 687 +++++++++++++++++++++++++++++++++ 15 files changed, 884 insertions(+), 3 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/loop-split.c create mode 100644 gcc/tree-ssa-loop-split.c