IBM Z Software


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C/C++ and Fortran Compilers

Showing 51

Add support to EDCDSECT for generating Doxygen-compatible comments

We have a product that has many data areas in common between C/C++ code and Assembler code. We generate the C/C++ header files from the Assembler DSECTs using the EDCDSECT utility provided by z/OS XL C/C++. We generate documentation for the C/C++ ...
over 7 years ago in C/C++ and Fortran Compilers / C/C++ 21 Planned for future release

Support for generating AMODE 31 with xlclang++

CICS does not support 64 bit LE programs. xlclang++ cannot be used for CICS development.
over 4 years ago in C/C++ and Fortran Compilers / C/C++ 2 Future consideration

Enhance constant propagation

The optimizer should take advantage of constantness of variables and propagate their values into generated instructions.
over 6 years ago in C/C++ and Fortran Compilers / C/C++ 3 Not under consideration

Enhance compiler optimizer

The compiler should generate more efficient code for testing bitfields when the bits tested are located in the same byte.
over 6 years ago in C/C++ and Fortran Compilers / C/C++ 3 Not under consideration

inline ASM DS incorrect load for long long

With inline ASM to initialize a long long variable using an ASM DS instruction in 31-bit mode, the compiler is only generating an 'L' instruction, which does not load the full 64-bit register representing the long long variable: unsigned long long...
over 6 years ago in C/C++ and Fortran Compilers / C/C++ 3 Not under consideration

Insufficient inlining for function pointers

The compiler is currently unable to inline a function that is passed to another function as a function pointer parameter. As a result trivial functions may not be inlined when called using a function pointers.
over 6 years ago in C/C++ and Fortran Compilers / C/C++ 3 Planned for future release

Exception Object Enhance

Exception handle is an important mechanism to help programmers debug their programs. Many of the literature books mention the use of this mechanism to increase the quality of the application. Although C11/C14 has no longer recommend the use of the...
about 7 years ago in C/C++ and Fortran Compilers / C/C++ 3 Not under consideration

z/OS XL C/C++ allow GENASM and __asm without using METAL C

Separate GENASM and METAL C/C++ compiler options and allow calling of operating system services directly from a non-METAL C/C++ program using __asm language extension.
over 10 years ago in C/C++ and Fortran Compilers / C/C++ 3 Not under consideration

xlc listing files for inline functions incorrect

Found a surprising limitation with xlc listing files for inline functions that are in .h files. The listing for such functions in the PDEF section has a line number like 691 | which doesn't reflect the source line number at the top of that .lst fi...
about 11 years ago in C/C++ and Fortran Compilers / C/C++ 4 Not under consideration

redefining functions in header files - do it the right way

When functions in header files need to be redefined (e.g. to get new default behavior),this should NOT be done by just renaming them with a simple '#define func_new func_old'.Instead, macros should be used like it was done for older XL C/C++ compi...
about 2 months ago in C/C++ and Fortran Compilers / AIX 1 Under review

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