[PATCH] D69391: Add #pragma clang loop ivdep

[Yashas Andaluri via Phabricator via cfe-commits]

YashasAndaluri created this revision.
YashasAndaluri added reviewers: hfinkel, Meinersbur, rscottmanley, DTharun.
YashasAndaluri created this object with edit policy "Administrators".
YashasAndaluri added a project: clang.
Herald added subscribers: cfe-commits, zzheng.
YashasAndaluri edited the summary of this revision.
YashasAndaluri edited the summary of this revision.
YashasAndaluri edited the summary of this revision.
YashasAndaluri edited the summary of this revision.
YashasAndaluri edited the summary of this revision.

This patch adds a `ivdep` pragma which uses the `IsParallel` loop hint attribute to indicate to the vectorizer that load and store instructions in the loop can be executed in parallel (belong to the same `llvm.access.group`) . This pragma will also imply `vectorize(enable)`.
Usage:

  #pragma clang loop ivdep(enable|disable)


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D69391

Files:
  clang/docs/LanguageExtensions.rst
  clang/include/clang/Basic/Attr.td
  clang/include/clang/Basic/AttrDocs.td
  clang/include/clang/Basic/DiagnosticParseKinds.td
  clang/lib/CodeGen/CGLoopInfo.cpp
  clang/lib/Parse/ParsePragma.cpp
  clang/lib/Sema/SemaStmtAttr.cpp
  clang/test/AST/ast-print-pragmas.cpp
  clang/test/CodeGenCXX/pragma-loop-ivdep.cpp
  clang/test/Parser/pragma-loop.cpp
  clang/test/Parser/pragma-unroll-and-jam.cpp

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