8173770: Image conversion improvements
Reviewed-by: kvn, vlivanov, dlong, rhalade, mschoene, iignatyev

8159016: Over-unrolled loop is partially removed
Summary: Prevent over-unrolling of loops by computing upper bound for trip count.
Reviewed-by: kvn

8159715: Fix for 8072422 is incorrect
Summary: Fixed several issues introduced by 8072422.
Reviewed-by: zmajo, kvn

8151573: Multiversioning for range check elimination
Summary: range check elimination in post loops
Reviewed-by: kvn

8148754: C2 loop unrolling fails due to unexpected graph shape
Summary: Check if graph shape is appropriate for optimization, bail out optimization if not.
Reviewed-by: kvn, twisti, shade, dnsimon

8148786: xml.tranform fails on x86-64
Summary: CCP computes wrong type for CountedLoop iv Phi
Reviewed-by: kvn

8149421: Vectorized Post Loops
Summary: add vectorised post loop for counted loops with vectors.
Reviewed-by: kvn

8143542: C2 doesn't eliminate identical checks
Summary: Two identical Ifs back to back can be merged
Reviewed-by: kvn

8147645: get_ctrl_no_update() code is wrong
Summary: Array.fill intrinsification code doesn't mark replaced control as dead
Reviewed-by: kvn

8146629: Make phase->is_IterGVN() accessible from Node::Identity and Node::Value
Summary: Change arguments of Node::Identity() and Node::Value() from PhaseTransform* to PhaseGVN*.
Reviewed-by: kvn, roland

6869327: Add new C2 flag to keep safepoints in counted loops.
Reviewed-by: kvn, shade

8137168: Replace IfNode with a new RangeCheckNode for range checks
Summary: new RangeCheckNode to enable optimization of explicit library level range checks
Reviewed-by: kvn, thartmann

8139340: SuperWord enhancement to support vector conditional move (CMovVD) on Intel AVX cpu
Summary: Emit vector conditional moves
Reviewed-by: kvn
Contributed-by: jan.civlin@intel.com

8136725: Provide utility for creation a counted loop reserve copy (clone)
Summary: Make it easier to revert to the original loop should that be needed
Reviewed-by: kvn
Contributed-by: jan.civlin@intel.com

8134739: compiler/loopopts/superword/TestVectorizationWithInvariant crashes in loop opts
Summary: Bail out of superword optimization if loop was removed (i.e., if zero-trip Opaque1Node was removed).
Reviewed-by: kvn, roland

8080289: Intermediate writes in a loop not eliminated by optimizer
Summary: Move Stores out of loop (after or before) when possible
Reviewed-by: kvn, vlivanov

8129920: Vectorized loop unrolling
Summary: optimize loop opts for vectorizible loops.
Reviewed-by: kvn, roland

8080325: SuperWord loop unrolling analysis
Summary: Determine loop unroll factor based on supported vectors sizes.
Reviewed-by: roland, kvn

8085832: Optimize main and post loop out when pre loop is found empty
Summary: Eliminate main loop and post loop if pre loop becomes empty
Reviewed-by: kvn, mcberg

8074981: Integer/FP scalar reduction optimization
Summary: Add scalar reduction optimization to C2 to take advantage of vector instructions in modern x86 CPUs.
Reviewed-by: kvn, twisti
Contributed-by: michael.c.berg@intel.com

8054478: C2: Incorrectly compiled char[] array access crashes JVM
Summary: dead backbranch in main loop results in erroneous array access
Reviewed-by: kvn, iveresov

8041415: remove port.{cpp,hpp} files
Summary: Hotspot should use standard headers and types
Reviewed-by: coleenp, kvn

8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
Summary: Copyright year updated for files modified during 2013
Reviewed-by: twisti, iveresov

8024069: replace_in_map() should operate on parent maps
Summary: type information gets lost because replace_in_map() doesn't update parent maps
Reviewed-by: kvn, twisti

8014811: loopTransform.cpp assert(cmp_end->in(2) == limit) failed
Summary: Stop current iteration of loop opts if partial_peel() failed and it created node clones outside processed loop.
Reviewed-by: roland

8008811: [parfait] Null pointer deference in hotspot/src/share/vm/opto/loopopts.cpp
Summary: add guarantee() checks
Reviewed-by: kvn

7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
Summary: Add support for expensive nodes.
Reviewed-by: kvn

7197424: update copyright year to match last edit in jdk8 hotspot repository
Summary: Update copyright year to 2012 for relevant files
Reviewed-by: dholmes, coleenp

7160161: Missed safepoint in non-Counted loop
Summary: Do not remove safepoints during peeling optimization.
Reviewed-by: twisti

7064302: JDK7 build 147 crashed after testing my java 6-compiled web app
Summary: Don't split CMove node if it's control edge is different from split region.
Reviewed-by: never

7107042: assert(no_dead_loop) failed: dead loop detected
Summary: Use dead nodes elimination code in PhaseIdealLoop before executing EA.
Reviewed-by: never, twisti

7068051: SIGSEGV in PhaseIdealLoop::build_loop_late_post
Summary: Removed predicate cloning from loop peeling optimization and from split fall-in paths.
Reviewed-by: never

7070134: Hotspot crashes with sigsegv from PorterStemmer
Summary: Do not move data nodes which are attached to a predicate test to a dominating test.
Reviewed-by: never

7044738: Loop unroll optimization causes incorrect result
Summary: take into account memory dependencies when clonning nodes in clone_up_backedge_goo().
Reviewed-by: never

7044725: -XX:-UnrollLimitCheck -Xcomp : Exception: String index out of range: 29488
Summary: Fix problems in new RCE code.
Reviewed-by: never

5091921: Sign flip issues in loop optimizer
Summary: Fix integer overflow problem in the code generated by loop optimizer.
Reviewed-by: never

7004555: Add new policy for one iteration loops
Summary: Add new policy for one iteration loops (mostly formal pre- loops).
Reviewed-by: never

7004535: Clone loop predicate during loop unswitch
Summary: Clone loop predicate for clonned loops
Reviewed-by: never

7008866: Missing loop predicate for loop with multiple entries
Summary: Add predicates when loop head bytecode is parsed instead of when back branch bytecode is parsed.
Reviewed-by: never

7017240: C2: native memory leak in nsk/regression/b4675027 on windows-x86 in comp mode with G1
Summary: Add ResourceMark into PhaseIdealLoop::build_and_optimize().
Reviewed-by: never

6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg

4809552: Optimize Arrays.fill(...)
Reviewed-by: kvn

6677629: PhaseIterGVN::subsume_node() should call hash_delete() and add_users_to_worklist()
Summary: Use replace_node() method instead of subsume_node().
Reviewed-by: jrose, never

6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair

6930043: C2: SIGSEGV in javasoft.sqe.tests.lang.arr017.arr01702.arr01702.loop_forw(II)I
Reviewed-by: kvn

6894779: Loop Predication for Loop Optimizer in C2
Summary: Loop predication implementation
Reviewed-by: never, kvn

6862956: PhaseIdealLoop should have a CFG verification mode
Reviewed-by: kvn, twisti

6810672: Comment typos
Summary: I have collected some typos I have found while looking at the code.
Reviewed-by: kvn, never

6743188: incomplete fix for 6700047 C2 failed in idom_no_update
Reviewed-by: rasbold, kvn

6384206: Phis which are later unneeded are impairing our ability to inline based on static types
Reviewed-by: rasbold, jrose

6719955: Update copyright year
Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell

6667612: (Escape Analysis) disable loop cloning if it has a scalar replaceable allocation
Summary: Cloning an allocation will not allow scalar replacement since memory operations could not be associated with one allocation.
Reviewed-by: rasbold

6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
Reviewed-by: kvn, rasbold

Initial load