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[MaximalStaticExpansion] Replace copied function with version from ISLTools 

llvm-svn: 331118
This commit is contained in:
Tobias Grosser 2018-04-28 20:42:35 +00:00
parent 06624e1a93
commit 77e871aaf5
1 changed files with 1 additions and 43 deletions
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44
polly/lib/Transform/MaximalStaticExpansion.cpp
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@ -17,6 +17,7 @@
#include "polly/ScopInfo.h"
#include "polly/ScopPass.h"
#include "polly/Support/GICHelper.h"
#include "polly/Support/ISLTools.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Analysis/OptimizationRemarkEmitter.h"
@ -128,49 +129,6 @@ static bool isDimBoundedByConstant(isl::set Set, unsigned dim) {
}
#endif
/// If @p PwAff maps to a constant, return said constant. If @p Max/@p Min, it
/// can also be a piecewise constant and it would return the minimum/maximum
/// value. Otherwise, return NaN.
static isl::val getConstant(isl::pw_aff PwAff, bool Max, bool Min) {
assert(!Max || !Min);
isl::val Result;
PwAff.foreach_piece([=, &Result](isl::set Set, isl::aff Aff) -> isl::stat {
if (Result && Result.is_nan())
return isl::stat::ok;
// TODO: If Min/Max, we can also determine a minimum/maximum value if
// Set is constant-bounded.
if (!Aff.is_cst()) {
Result = isl::val::nan(Aff.get_ctx());
return isl::stat::error;
}
auto ThisVal = Aff.get_constant_val();
if (!Result) {
Result = ThisVal;
return isl::stat::ok;
}
if (Result.eq(ThisVal))
return isl::stat::ok;
if (Max && ThisVal.gt(Result)) {
Result = ThisVal;
return isl::stat::ok;
}
if (Min && ThisVal.lt(Result)) {
Result = ThisVal;
return isl::stat::ok;
}
// Not compatible
Result = isl::val::nan(Aff.get_ctx());
return isl::stat::error;
});
return Result;
}
char MaximalStaticExpander::ID = 0;
isl::union_map MaximalStaticExpander::filterDependences(