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My ideas: C/C++

Showing 42 of 8525

Metal C - Compiler option to specify a register to map DSA

Currently Metal C uses Register 13 to map the DSA. Pls add a compiler option, for the user to specify the register that the compiler should use to map the DSA. Register 13 contents usually point to the save area. We have use cases, where the save ...
almost 6 years ago in C/C++ and Fortran Compilers / C/C++ 2 Not under consideration

Need more builtin functions in C/C++ compiler

In the XL C/C++ Programming Guide there are only a few General instructions like __pack and __unpack.In order for Metal C to be used for system software it would be better if these instructions were expanded so __asm would not have to be used as o...
almost 6 years ago in C/C++ and Fortran Compilers / C/C++ 2 Not under consideration

Allow -qlistfmt=html=inlines to break down the report into multiple files

Allow the reporting tools to generate multiple report files depending on the size limit provided by the client.
almost 7 years ago in C/C++ and Fortran Compilers / C/C++ 2 Not under consideration

Document and support #pragma once in both C/C++

The z/OS C++ compiler supports the #pragma once directive. This is undocumented and not supported for the C language. This feature should be documented and supported for both the C and C++ languages.
over 7 years ago in C/C++ and Fortran Compilers / C/C++ 2 Not under consideration

#line directive causing source to not be intermixed in ASM listing

Sometimes C source code is embedded within generated pseudo assembly listings via the LIST option, like: 00012E 50D0 E004 000008 | ST r13,4(,r14)000132 18DE 000008 | LR r13,r14000134 End of Prolog 000009 | * { 000010 | * return foo();000134 58F0 3...
about 8 years ago in C/C++ and Fortran Compilers / C/C++ 3 Not under consideration

XL C/C++ compiler setting to disallow vector (VMX/VSX) instructions

Request for the compiler to support code generation consistent with an AIX tuning of allow_vmx=0. The AIX tuning rejects all vector instructions, treating them as illegal operations. The compiler should have a corresponding option to completely di...
over 8 years ago in C/C++ and Fortran Compilers / C/C++ 2 Future consideration

87671, 49R, 000 BGQ , xlc++ 12.1.0.7 -O2 slow , vulcan , John Gyllenhaal

-------- Forwarded Message --------Subject: RE: 87671, 49R, 000 BGQ , xlc++ 12.1.0.7 -O2 slow , vulcan , John GyllenhaalDate: Wed, 21 Jan 2015 14:54:40 -0500From: Viktor Ganich <vganich@ca.ibm.com>To: Paul Szepietowski <pauls@llnl.gov>...
almost 10 years ago in C/C++ and Fortran Compilers / C/C++ 4 Not under consideration

Behaviour of comma operator in C++

We use multiple C and C++ compilers, including IBM XL C/C++ for AIX V11.1.0.18. XL C++ appears to treat comma expressions differently depending if they are an argument to a return statement or a function or if they are used elsewhere. This behavio...
over 10 years ago in C/C++ and Fortran Compilers / C/C++ 3 Not under consideration

Long compile time with -qsmp=omp for non-openmp files

XLC enforces -qhot optimization steps with -qsmp=omp option even for non-OMP source files, making the compile time unnecessarily long for such cases. The -qsmp=omp compile time issue becomes a dramatic problem because in user's makefile, the optio...
over 10 years ago in C/C++ and Fortran Compilers / C/C++ 6 Not under consideration

DB2 & CICS coprocessors do not provide enough debug information

To convert to co-processors we need to have the CICS and DB2 listings or something equivalent. We always print the first page of the DB2 and CICS pre-processor listingbecause they tell the applications the verson of DB2 the program was compiled us...
over 10 years ago in C/C++ and Fortran Compilers / C/C++ 4 Not under consideration

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