7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops Summary: In C2 add software membar after load from Reference.referent field to prevent commoning of loads across safepoint since GC can change its value. In C1 always generate Reference.get() intrinsic. Reviewed-by: roland, twisti, dholmes, johnc

6340864: Implement vectorization optimizations in hotspot-server Summary: Added asm encoding and mach nodes for vector arithmetic instructions on x86. Reviewed-by: roland

Merge

7193157: G1: Make some develpflags available in product builds Summary: Also reviewed by: vitalyd@gmail.com. Make G1DefaultMinNewGenPercent, G1DefaultMaxNewGenPercent, G1OldCSetRegionLiveThresholdPercent and G1OldCSetRegionThresholdPercent experimental flags Reviewed-by: ysr, johnc, jmasa

7185699: G1: Prediction model discrepancies Summary: Correct the result value of G1CollectedHeap::pending_card_num(). Change the code that calculates the GC efficiency of a non-young heap region to use historical data from mixed GCs and the actual number of live bytes when predicting how long it would take to collect the region. Changes were also reviewed by Thomas Schatzl. Reviewed-by: azeemj, brutisso

7192128: G1: Extend fix for 6948537 to G1's BOT Summary: G1 does not appear to be immune to the issue described in CR 6948537 and increasing the size of old-generation PLABs appears to increase the liklihood of seeing the issue. Extend the fix for 6948537 to G1's BlockOffsetTable. Reviewed-by: brutisso, jmasa

Merge

Merge

7191124: Optimized build is broken due to inconsistent use of DEBUG_ONLY and NOT_PRODUCT macros in NMT Summary: Updated all related variables and methods to use NOT_PRODUCT macros Reviewed-by: coleenp, acorn, kvn

7190512: Fix for 7181175 broke hotspot/make/windows/create.bat builds Summary: Add some quotes around the classpath in the project file rule. Reviewed-by: dcubed