Displaying 4 results from an estimated 4 matches for "srcsubscript".
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srcsubscripts
2019 May 13
3
Delinearization validity checks in DependenceAnalysis
...nother subscript,
so is
// always safe. The others need to be 0 <= subscript[i] < bound, for both
src
// and dst.
// FIXME: It may be better to record these sizes and add them as
constraints
// to the dependency checks.
for (int i = 1; i < size; ++i) {
if (!isKnownNonNegative(SrcSubscripts[i], SrcPtr))
return false;
if (!isKnownLessThan(SrcSubscripts[i], Sizes[i - 1]))
return false;
if (!isKnownNonNegative(DstSubscripts[i], DstPtr))
return false;
if (!isKnownLessThan(DstSubscripts[i], Sizes[i - 1]))
return false;
}
```
The problem is that...
2019 May 15
3
Delinearization validity checks in DependenceAnalysis
...verflow into another subscript, so
is
// always safe. The others need to be 0 <= subscript[i] < bound, for both
src
// and dst.
// FIXME: It may be better to record these sizes and add them as
constraints
// to the dependency checks.
for (int i = 1; i < size; ++i) {
if (!isKnownNonNegative(SrcSubscripts[i], SrcPtr))
return false;
if (!isKnownLessThan(SrcSubscripts[i], Sizes[i - 1]))
return false;
if (!isKnownNonNegative(DstSubscripts[i], DstPtr))
return false;
if (!isKnownLessThan(DstSubscripts[i], Sizes[i - 1]))
return false;
}
```
The problem is that in a lot of cases these conditions canno...
2019 May 16
2
Delinearization validity checks in DependenceAnalysis
...t; // always safe. The others need to be 0 <= subscript[i] < bound, for both
> src
> // and dst.
> // FIXME: It may be better to record these sizes and add them as
> constraints
> // to the dependency checks.
> for (int i = 1; i < size; ++i) {
> if (!isKnownNonNegative(SrcSubscripts[i], SrcPtr))
> return false;
>
> if (!isKnownLessThan(SrcSubscripts[i], Sizes[i - 1]))
> return false;
>
> if (!isKnownNonNegative(DstSubscripts[i], DstPtr))
> return false;
>
> if (!isKnownLessThan(DstSubscripts[i], Sizes[i - 1]))
> return false;
> }
> ```
&...
2019 May 22
2
Delinearization validity checks in DependenceAnalysis
...he delinearization validity checks, the access functions A[i*M + j] and A[i*M + j - 1] would get delinearized as follows:
SrcSCEV = {{((4 * %M) + %A)<nsw>,+,(4 * %M)}<%for.body>,+,4}<%for.body4>
DstSCEV = {{(-4 + (4 * %M) + %A),+,(4 * %M)}<%for.body>,+,4}<%for.body4>
SrcSubscripts: {1,+,1}<%for.body>{0,+,1}<%for.body4>
DstSubscripts: {1,+,1}<%for.body>{-1,+,1}<%for.body4> delinearized
subscript 0
src = {1,+,1}<%for.body>
dst = {1,+,1}<%for.body>
class = 1
loops = {1}
subscript 1
src = {0,+,1}<%for.body4>
dst = {-1,+,1}<%for.body4...