https://bugs.llvm.org/show_bug.cgi?id=46170
Bug ID: 46170
Summary: OpenMP offload incorrect map of class member array
Product: OpenMP
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Clang Compiler Support
Assignee: unassignedclangb...@nondot.org
Reporter: xw111lu...@gmail.com
CC: llvm-bugs@lists.llvm.org
https://github.com/ye-luo/openmp-target/blob/master/hands-on/tests/map/map_class_member.cpp
$ clang++ -fopenmp -fopenmp-targets=nvptx64 -fopenmp-version=50
map_class_member.cpp
$ LIBOMPTARGET_DEBUG=1 ./a.out
...
Libomptarget --> Entry 0: Base=0x00007ffc49d17ad8, Begin=0x00007ffc49d17ad8,
Size=4, Type=0x20
Libomptarget --> Entry 1: Base=0x00007ffc49d17ad8, Begin=0x00007ffc49d17ad8,
Size=24, Type=0x1000000000000
Libomptarget --> Looking up mapping(HstPtrBegin=0x00007ffc49d17ad8, Size=4)...
Libomptarget --> Creating new map entry: HstBase=0x00007ffc49d17ad8,
HstBegin=0x00007ffc49d17ad8, HstEnd=0x00007ffc49d17adc,
TgtBegin=0x00007f25f3a00000
Libomptarget --> There are 4 bytes allocated at target address
0x00007f25f3a00000 - is new
Libomptarget --> Looking up mapping(HstPtrBegin=0x00007ffc49d17ad8, Size=24)...
Libomptarget --> WARNING: Pointer is already mapped but section extends beyond
mapped region
Libomptarget --> Explicit extension of mapping is not allowed.
Libomptarget --> Call to getOrAllocTgtPtr returned null pointer (device failure
or illegal mapping).
Libomptarget fatal error 1: failure of target construct while offloading is
mandatory
...
Not fully sure if the code is 5.0 compliant. But it works with XL but not Clang
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