IBM Z Software


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C/C++

Showing 35

Using CPACF with HW built-In instructions

ISV likes to use HW Crypto support of CPACF (see Principles of Operation) in their applications running on z/OS. As of requiremts of their architecture and as of performance reasons, they do not use ICSF. So they have to use the CPACF instructions...
almost 10 years ago in C/C++ and Fortran Compilers / C/C++ 7 Not under consideration

Issue with Occurs clause Variables

We are migrating Micro focus COBOL programs to IBM COBOL for my client(shop direct). We see some initialization errors coming from mx20f program while compiling with IBM COBOL compiler. Initialization is not possible on occurs clause variables in ...
about 5 years ago in C/C++ and Fortran Compilers / C/C++ 4 Not under consideration

XL: Support linking objects compiled with clang++ and xlc or xlf that use OpenMP GPU offloading

SalesForce Case TS001968579PMR 82483,227,000 XLF compiler: Errors linking objects compiled with clang++ and xlc or xlf that use OpenMP GPU offloading. LLNL is having problems linking objects that were compiled using the clang++ (LLVM) and XLF (or ...
over 5 years ago in C/C++ and Fortran Compilers / C/C++ 2 Not under consideration

RFE for header file cache optimization on C compiler

We would like to see the following implemented with the C compiler frontend just like it is for the C++ compiler frontend beginning with Xlc 12.1: -qxflag=dircache[,m[,n]] where m and n are optional * m is a integral prime number between 2 and 71 ...
about 11 years ago in C/C++ and Fortran Compilers / C/C++ 5 Not under consideration

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

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

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