llvm-project

Commit Graph

Author	SHA1	Message	Date
Sander de Smalen	b1ff20fd35	[LV] Enable scalable vectorization by default for SVE cores. The availability of SVE should be sufficient to enable scalable auto-vectorization. This patch adds a new TTI interface to query the target what style of vectorization it wants when scalable vectors are available. For other targets than AArch64, this currently defaults to 'FixedWidthOnly'. Differential Revision: https://reviews.llvm.org/D115651	2021-12-20 16:23:29 +00:00
Caroline Concatto	5a4de84d55	[LoopVectorize] Fix crash for predicated instruction with scalable VF This patch avoids computing discounts for predicated instructions when the VF is scalable. There is no support for vectorization of loops with division because the vectorizer cannot guarantee that zero divisions will not happen. This loop now does not use VF scalable ``` for (long long i = 0; i < n; i++) if (cond[i]) a[i] /= b[i]; ``` Differential Revision: https://reviews.llvm.org/D101916	2021-07-22 12:48:27 +01:00

Author

SHA1

Message

Date

Sander de Smalen

b1ff20fd35

[LV] Enable scalable vectorization by default for SVE cores.

The availability of SVE should be sufficient to enable scalable
auto-vectorization.

This patch adds a new TTI interface to query the target what style of
vectorization it wants when scalable vectors are available. For other
targets than AArch64, this currently defaults to 'FixedWidthOnly'.

Differential Revision: https://reviews.llvm.org/D115651

2021-12-20 16:23:29 +00:00

Caroline Concatto

5a4de84d55

[LoopVectorize] Fix crash for predicated instruction with scalable VF

This patch avoids computing discounts for predicated instructions  when the
VF is scalable.
There is no support for vectorization of loops with division because the
vectorizer cannot guarantee that zero divisions will not happen.

This loop now does not use VF scalable

```
for (long long i = 0; i < n; i++)
    if (cond[i])
      a[i] /= b[i];
```

Differential Revision: https://reviews.llvm.org/D101916

2021-07-22 12:48:27 +01:00

2 Commits