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Diffstat (limited to 'docs/ReleaseNotes.rst')
| -rw-r--r-- | docs/ReleaseNotes.rst | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst index 822b55f..080a81a 100644 --- a/docs/ReleaseNotes.rst +++ b/docs/ReleaseNotes.rst @@ -64,6 +64,12 @@ Non-comprehensive list of changes in this release attributes, which are useful for passing information to code generation. See :doc:`HowToUseAttributes` for more details. +* TableGen's syntax for instruction selection patterns has been simplified. + Instead of specifying types indirectly with register classes, you should now + specify types directly in the input patterns. See ``SparcInstrInfo.td`` for + examples of the new syntax. The old syntax using register classes still + works, but it will be removed in a future LLVM release. + * ... next change ... .. NOTE @@ -103,15 +109,25 @@ Loop Vectorizer We've continued the work on the loop vectorizer. The loop vectorizer now has the following features: -- Loops with unknown trip count. -- Runtime checks of pointers -- Reductions, Inductions -- If Conversion -- Pointer induction variables -- Reverse iterators -- Vectorization of mixed types -- Vectorization of function calls -- Partial unrolling during vectorization +- Loops with unknown trip counts. +- Runtime checks of pointers. +- Reductions, Inductions. +- Min/Max reductions of integers. +- If Conversion. +- Pointer induction variables. +- Reverse iterators. +- Vectorization of mixed types. +- Vectorization of function calls. +- Partial unrolling during vectorization. + +The loop vectorizer is now enabled by default for -O3. + +SLP Vectorizer +-------------- + +LLVM now has a new SLP vectorizer. The new SLP vectorizer is not enabled by +default but can be enabled using the clang flag -fslp-vectorize. The BB-vectorizer +can also be enabled using the command line flag -fslp-vectorize-aggressive. R600 Backend ------------ |