7123954: Some CTW test crash with SIGSEGV Summary: Correct Allocate expansion code to preserve i_o when only slow call is generated. Reviewed-by: iveresov

7110832: ctw/.../org_apache_avalon_composition_util_StringHelper crashes the VM Summary: Distance is too large for one short branch in string_indexofC8(). Reviewed-by: iveresov

7123253: C1: in store check code, usage of registers may be incorrect Summary: fix usage of input register in assembly code for store check. Reviewed-by: never

7123108: C1: assert(if_state != NULL) failed: states do not match up Summary: In CEE, ensure if and common successor state are at the same inline level Reviewed-by: never

7121140: Allocation paths require explicit memory synchronization operations for RMO systems Summary: adds store store barrier after initialization of header and body of objects. Reviewed-by: never, kvn

7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions Summary: Moved sizeof(klassOopDesc), changed the return type to ByteSize and removed the _in_bytes suffix. Reviewed-by: never, bdelsart, coleenp, jrose

7121648: Use 3-operands SIMD instructions on x86 with AVX Summary: Use 3-operands SIMD instructions in C2 generated code for machines with AVX. Reviewed-by: never

7121073: secondary_super_cache memory slice has incorrect bounds in flatten_alias_type Reviewed-by: kvn

7116452: Add support for AVX instructions Summary: Added support for AVX extension to the x86 instruction set. Reviewed-by: never

7121111: -server -Xcomp -XX:+TieredCompilation does not invoke C2 compiler Summary: Exercise C2 more in tiered mode with Xcomp Reviewed-by: kvn, never