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[FIX] Use the correct functions to extract the LB/UB from a range 

The current tests will continue to cover this code and more will be
  added when non-affine loops are supported.

llvm-svn: 231606
This commit is contained in:
Johannes Doerfert 2015-03-08 19:49:50 +00:00
parent 3162f29fcd
commit e4bd53bd0c
1 changed files with 14 additions and 6 deletions
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20
polly/lib/Analysis/ScopInfo.cpp
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@ -307,14 +307,18 @@ static __isl_give isl_set *addRangeBoundsToSet(__isl_take isl_set *S,
isl_val *V;
isl_ctx *ctx = isl_set_get_ctx(S);
V = isl_valFromAPInt(ctx, Range.getLower(), true);
bool isWrapping = Range.isSignWrappedSet();
const auto LB = isWrapping ? Range.getLower() : Range.getSignedMin();
V = isl_valFromAPInt(ctx, LB, true);
isl_set *SLB = isl_set_lower_bound_val(isl_set_copy(S), type, dim, V);
V = isl_valFromAPInt(ctx, Range.getUpper(), true);
V = isl_val_sub_ui(V, 1);
const auto UB = isWrapping ? Range.getUpper() : Range.getSignedMax();
V = isl_valFromAPInt(ctx, UB, true);
if (isWrapping)
V = isl_val_sub_ui(V, 1);
isl_set *SUB = isl_set_upper_bound_val(S, type, dim, V);
if (Range.isSignWrappedSet())
if (isWrapping)
return isl_set_union(SLB, SUB);
else
return isl_set_intersect(SLB, SUB);
@ -550,9 +554,13 @@ void MemoryAccess::computeBoundsOnAccessRelation(unsigned ElementSize) {
if (Range.isFullSet())
return;
bool isWrapping = Range.isSignWrappedSet();
unsigned BW = Range.getBitWidth();
auto Min = Range.getSignedMin().sdiv(APInt(BW, ElementSize));
auto Max = (Range.getSignedMax() - APInt(BW, 1)).sdiv(APInt(BW, ElementSize));
const auto LB = isWrapping ? Range.getLower() : Range.getSignedMin();
const auto UB = isWrapping ? Range.getUpper() : Range.getSignedMax();
auto Min = LB.sdiv(APInt(BW, ElementSize));
auto Max = (UB - APInt(BW, 1)).sdiv(APInt(BW, ElementSize));
isl_set *AccessRange = isl_map_range(isl_map_copy(AccessRelation));
AccessRange =