Summary: C2 treats x^2 as a special case and computes x * x while the interpreter and c1 don't have special case code for X^2.
Reviewed-by: kvn

Reviewed-by: kvn

Reviewed-by: kvn

Reviewed-by: kvn, mdoerr

Reviewed-by: coleenp

Summary: gcc expects clean 32 bit int in 64 bit register on function entry
Reviewed-by: kvn, dlong

Reviewed-by: kvn, jrose, kevinw, ahgross

8149367: PolicyQualifierInfo/index_Ctor JCk test fails with IOE: Invalid encoding for PolicyQualifierInfo
Summary: fix incorrect code
Reviewed-by: kvn, coleenp

Summary: Add intrinsics for BigInteger squareToLen and mulAdd methods.
Reviewed-by: kvn, jrose