This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: RFC: PR rtl-optimization/44695: [4.6 Regression] ice in simplify_subreg, at simplify-rtx.c:5117


This is wrong. GCC may use this for a 16 to 8 bit division and cause a
divide overflow.

My comment in the PR is based on how GCC handles extension of the
dividend for 16/32/64 bit operands.

Paolo


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]