Does the HGPR compiler option make any difference? z/OS 2.2.0>z/OS XL C/C++>z/OS XL C/C++ User's Guide>Compiler options>Description of compiler options>HGPR | NOHGPR
Purpose Enables the compiler to exploit 64-bit General Purpose Registers (GPRs) in 32-bit programs targeting z/Architecture® hardware. When the HGPR compiler option is in effect, the compiler can exploit 64-bit GPRs in the generated code. The compiler will take advantage of this permission when the code generation condition is appropriate. When the NOHGPR and ILP32 compiler options are in effect, the compiler cannot exploit 64-bit GPRs in the generated code. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
