[PATCH] D80574: [ExtVector] Support ExtVectorType conditional operator

[Min-Yih Hsu via Phabricator via cfe-commits]

myhsu created this revision.
myhsu added reviewers: Anastasia, bader, hfinkel, erichkeane.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

Extension vectors now can be used in element-wise conditional selector.
For example:

  R[i] = C[i]? A[i] : B[i]

This feature was previously only enabled in OpenCL C. Now it's also
available in C. Not that it has different behaviors than GNU vectors
(i.e. __vector_size__). Extension vectors selects on signdness of the
vector. GNU vectors on the other hand do normal bool conversions. Also,
this feature is not available in C++.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D80574

Files:
  clang/docs/LanguageExtensions.rst
  clang/lib/CodeGen/CGExprScalar.cpp
  clang/lib/Sema/SemaExpr.cpp
  clang/test/Sema/ext_vector_comparisons.c

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