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| author | Roman Gareev <gareevroman@gmail.com> | 2016-06-03 18:46:29 +0000 |
|---|---|---|
| committer | Roman Gareev <gareevroman@gmail.com> | 2016-06-03 18:46:29 +0000 |
| commit | 4b8c7aeb62793fbdee043d134abb342e529aeba0 (patch) | |
| tree | 254dc2486050e8739142d5c34743870733b27ff3 /polly/lib/Transform/ScheduleOptimizer.cpp | |
| parent | dfec58e80ce1c4c0213a587ac41688c3d31a2e96 (diff) | |
| download | bcm5719-llvm-4b8c7aeb62793fbdee043d134abb342e529aeba0.tar.gz bcm5719-llvm-4b8c7aeb62793fbdee043d134abb342e529aeba0.zip | |
[FIX] Fix potential issue related to subtraction from an unsigned 0 in circularShiftOutputDims
Reported-by: Mehdi Amini <mehdi.amini@apple.com>
Contributed-by: Michael Kruse <llvm@meinersbur.de>
Differential Revision: http://reviews.llvm.org/D20969
llvm-svn: 271705
Diffstat (limited to 'polly/lib/Transform/ScheduleOptimizer.cpp')
| -rw-r--r-- | polly/lib/Transform/ScheduleOptimizer.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/polly/lib/Transform/ScheduleOptimizer.cpp b/polly/lib/Transform/ScheduleOptimizer.cpp index 784c970ad63..36df4f23635 100644 --- a/polly/lib/Transform/ScheduleOptimizer.cpp +++ b/polly/lib/Transform/ScheduleOptimizer.cpp @@ -463,8 +463,10 @@ static bool containsMatrMult(__isl_keep isl_map *PartialSchedule) { /// /// @param IslMap The isl map to be modified. static __isl_give isl_map *circularShiftOutputDims(__isl_take isl_map *IslMap) { - auto InputDimsId = isl_map_get_tuple_id(IslMap, isl_dim_in); auto DimNum = isl_map_dim(IslMap, isl_dim_out); + if (DimNum == 0) + return IslMap; + auto InputDimsId = isl_map_get_tuple_id(IslMap, isl_dim_in); IslMap = isl_map_move_dims(IslMap, isl_dim_in, 0, isl_dim_out, DimNum - 1, 1); IslMap = isl_map_move_dims(IslMap, isl_dim_out, 0, isl_dim_in, 0, 1); return isl_map_set_tuple_id(IslMap, isl_dim_in, InputDimsId); |
