[all-commits] [llvm/llvm-project] 05e6fc: [flang][OpenMP] Lowering support for default clause

[NimishMishra via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 05e6fce84fd39d150195b8928561f2c90c71e538
      https://github.com/llvm/llvm-project/commit/05e6fce84fd39d150195b8928561f2c90c71e538
  Author: Nimish Mishra <neelam.nimish at gmail.com>
  Date:   2022-07-26 (Tue, 26 Jul 2022)

  Changed paths:
    M flang/include/flang/Lower/AbstractConverter.h
    M flang/lib/Lower/Bridge.cpp
    M flang/lib/Lower/OpenMP.cpp
    M flang/lib/Semantics/resolve-directives.cpp
    A flang/test/Lower/OpenMP/default-clause.f90
    M flang/test/Lower/OpenMP/omp-parallel-lastprivate-clause-scalar.f90
    A flang/test/Semantics/OpenMP/omp-default-clause.f90

  Log Message:
  -----------
  [flang][OpenMP] Lowering support for default clause

This patch adds lowering support for default clause.

1. During symbol resolution in semantics, should the enclosing context have
a default data sharing clause defined and a `parser::Name` is not attached
to an explicit data sharing clause, the
`semantics::Symbol::Flag::OmpPrivate` flag (in case of `default(private)`)
and `semantics::Symbol::Flag::OmpFirstprivate` flag (in case of
`default(firstprivate)`) is added to the symbol.

2. During lowering, all symbols having either
   `semantics::Symbol::Flag::OmpPrivate` or
   `semantics::Symbol::Flag::OmpFirstprivate` flag are collected and
   privatised appropriately.

Co-authored-by: Peixin Qiao <qiaopeixin at huawei.com>

Reviewed By: kiranchandramohan

Differential Revision: https://reviews.llvm.org/D123930