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android / platform / external / opencl / llvm-project / d1592a966bc2
commitd1592a966bc22b94362380aa690eeb92f42b8ca0[log] [tgz]
authorSimon Pilgrim <llvm-dev@redking.me.uk>Wed May 28 11:02:37 2025 +0100
committerGitHub <noreply@github.com>Wed May 28 11:02:37 2025 +0100
tree087c31b836f81be817d0b13eafe3f49d133ffc3f
parenteea69691908d2ff59ef2614fc6f948d021d0ef07 [diff]
[X86] X86FixupVectorConstantsPass - use scheduler model to avoid regressions (#140028)

When attempting to replace a full vector constant load with an instruction that uses a smaller constant, check the scheduler model to ensure the instruction isn't slower.

Throughput must not regress, but allow a small increase in latency based on how much constant data we're saving (I've used a simple estimate of 1 cycle per 128-bits of data saved).

NOTE: this currently ignores hoisted constant loads where the slower instruction might be acceptable.

Fixes #135998
29 files changed
tree: 087c31b836f81be817d0b13eafe3f49d133ffc3f
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. flang-rt/
  11. libc/
  12. libclc/
  13. libcxx/
  14. libcxxabi/
  15. libunwind/
  16. lld/
  17. lldb/
  18. llvm/
  19. llvm-libgcc/
  20. mlir/
  21. offload/
  22. openmp/
  23. polly/
  24. pstl/
  25. runtimes/
  26. third-party/
  27. utils/
  28. .clang-format
  29. .clang-format-ignore
  30. .clang-tidy
  31. .git-blame-ignore-revs
  32. .gitattributes
  33. .gitignore
  34. .mailmap
  35. CODE_OF_CONDUCT.md
  36. CONTRIBUTING.md
  37. LICENSE.TXT
  38. pyproject.toml
  39. README.md
  40. 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.

Getting the Source Code and Building LLVM

Consult the Getting Started with LLVM page for information on building and running LLVM.

For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.

Getting in touch

Join the LLVM Discourse forums, Discord chat, LLVM Office Hours or Regular sync-ups.

The LLVM project has adopted a code of conduct for participants to all modes of communication within the project.