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llvm / llvm-project / 7634a96589637186b640a0441c0544a9868d9913
commit7634a96589637186b640a0441c0544a9868d9913[log] [tgz]
authorRazvan Lupusoru <razvan.lupusoru@gmail.com>Wed Aug 07 08:04:06 2024 -0700
committerGitHub <noreply@github.com>Wed Aug 07 08:04:06 2024 -0700
treedf3ceec01755f8ad1bad38a9a8cfbc6707e57415
parent12fa4b17dcededbd14abfc3ae72f1b798349e847 [diff]
[flang][acc] Improve lowering of Fortran optional in data clause (#102224)

Fortran optional arguments are effectively null references. To deal with
this possibility, flang lowering of OpenACC data clauses creates three
if-else regions when preparing the data pointer for the data clause:
1) Load box value from box reference
2) Load box addr from box value
3) Load box dims from box value

However, this pattern makes it more complicated to find the original box
reference. Effectively, the first if-else region to get the box value is
not needed - since the value can be loaded before the corresponding
`fir.box_addr` and `fir.box_dims` operations. Thus, reduce the number of
if-else regions by deferring the box load to the use sites.

For non-optional cases, the old functionality is left alone - which
preloads the box value.
3 files changed
tree: df3ceec01755f8ad1bad38a9a8cfbc6707e57415
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. libc/
  11. libclc/
  12. libcxx/
  13. libcxxabi/
  14. libunwind/
  15. lld/
  16. lldb/
  17. llvm/
  18. llvm-libgcc/
  19. mlir/
  20. offload/
  21. openmp/
  22. polly/
  23. pstl/
  24. runtimes/
  25. third-party/
  26. utils/
  27. .clang-format
  28. .clang-tidy
  29. .git-blame-ignore-revs
  30. .gitattributes
  31. .gitignore
  32. .mailmap
  33. CODE_OF_CONDUCT.md
  34. CONTRIBUTING.md
  35. LICENSE.TXT
  36. pyproject.toml
  37. README.md
  38. SECURITY.md
README.md

The LLVM Compiler Infrastructure

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Welcome to the LLVM project!

This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.

The LLVM project has multiple components. The core of the project is itself called “LLVM”. This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.

C-like languages use the Clang frontend. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM.

Other components include: the libc++ C++ standard library, the LLD linker, and more.

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