APAR status
Closed as program error.
Error description
An internal compiler error occurs with the following test case with device offloading disabled: ====COMPILE COMMAND: xlc_r -qsmp=noopt test.c -c ====TESTCASE: $ cat test.c # define WIDTH 1000 # define HEIGHT 1000 #define SZ ((HEIGHT+2) * (WIDTH+2)) #define IDX(i,j) (((i)*(WIDTH+2))+(j)) double *Temperature_previous; void initialize(){ int i, j; #pragma omp target map(from:Temperature_previous[0:SZ]) { #pragma omp teams distribute for(i = 0; i <= HEIGHT+1; i++) for (j = 0; j <= WIDTH+1; j++) Temperature_previous[IDX(i,j)] = 0.0; #pragma omp teams distribute for(i = 0; i <= HEIGHT+1; i++) Temperature_previous[IDX(i,0)] = 0.0; } } $ =====ACTUAL OUTPUT: Compiler produces an internal compiler error =====EXPECTED OUTPUT: Should compile fine
Local fix
N/A
Problem summary
USERS AFFECTED: Users compiling with -qsmp=omp may be affected by this issue. PROBLEM DESCRIPTION: The submitted test case exposes a user error when compared to the OpenMP 4.5 specification. This is a non-conforming program because of the following restriction on the teams regions: "If specified, a teams construct must be contained within a target construct. That target 19 construct must contain no statements, declarations or directives outside of the teams construct." The target region in the initialize function contains more than one teams region in it.
Problem conclusion
The compiler has been modified to catch the above user error and emit a diagnostic message.
Temporary fix
Comments
APAR Information
APAR number
LI80750
Reported component name
XL C/C++ LINUX
Reported component ID
5725C7310
Reported release
G11
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-04-17
Closed date
2019-04-18
Last modified date
2019-04-18
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
XL C/C++ LINUX
Fixed component ID
5725C7310
Applicable component levels
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSXVZZ","label":"XL C\/C++ for Linux"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"G11","Edition":"","Line of Business":{"code":"LOB57","label":"Power"}}]
Document Information
Modified date:
18 April 2019