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ScheduleOptimizer: Simplify some code

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We now use isl_map_equate, which makes the code a lot simpler.

llvm-svn: 157246
This commit is contained in:
Tobias Grosser
2012-05-22 10:47:31 +00:00
parent 18daacad61
commit 29666113fd
1 changed files with 9 additions and 21 deletions
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30
polly/lib/ScheduleOptimizer.cpp
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@@ -197,33 +197,21 @@ void IslScheduleOptimizer::extendScattering(Scop &S, unsigned NewDimensions) {
ScopStmt *Stmt = *SI;
unsigned OldDimensions = Stmt->getNumScattering();
isl_space *Space;
isl_basic_map *ChangeScattering;
isl_map *Map, *New;
Space = isl_space_alloc(Stmt->getIslCtx(), 0, OldDimensions, NewDimensions);
ChangeScattering = isl_basic_map_universe(isl_space_copy(Space));
isl_local_space *LocalSpace = isl_local_space_from_space(Space);
Map = isl_map_universe(Space);
for (unsigned i = 0; i < OldDimensions; i++) {
isl_constraint *c = isl_equality_alloc(isl_local_space_copy(LocalSpace));
isl_constraint_set_coefficient_si(c, isl_dim_in, i, 1);
isl_constraint_set_coefficient_si(c, isl_dim_out, i, -1);
ChangeScattering = isl_basic_map_add_constraint(ChangeScattering, c);
}
for (unsigned i = 0; i < OldDimensions; i++)
Map = isl_map_equate(Map, isl_dim_in, i, isl_dim_out, i);
for (unsigned i = OldDimensions; i < NewDimensions; i++) {
isl_constraint *c = isl_equality_alloc(isl_local_space_copy(LocalSpace));
isl_constraint_set_coefficient_si(c, isl_dim_out, i, 1);
ChangeScattering = isl_basic_map_add_constraint(ChangeScattering, c);
}
for (unsigned i = OldDimensions; i < NewDimensions; i++)
Map = isl_map_fix_si(Map, isl_dim_out, i, 0);
isl_map *ChangeScatteringMap = isl_map_from_basic_map(ChangeScattering);
ChangeScatteringMap = isl_map_align_params(ChangeScatteringMap,
S.getParamSpace());
isl_map *NewScattering = isl_map_apply_range(Stmt->getScattering(),
ChangeScatteringMap);
Stmt->setScattering(NewScattering);
isl_local_space_free(LocalSpace);
Map = isl_map_align_params(Map, S.getParamSpace());
New = isl_map_apply_range(Stmt->getScattering(), Map);
Stmt->setScattering(New);
}
}