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llvm / llvm-project / 06ab30b57450694818dbb649dec2a687f44df7f4
commit06ab30b57450694818dbb649dec2a687f44df7f4[log] [tgz]
authorChangpeng Fang <changpeng.fang@amd.com>Thu Jul 18 09:40:37 2024 -0700
committerGitHub <noreply@github.com>Thu Jul 18 09:40:37 2024 -0700
tree123fa3f7f096540255ef5ece26c68a3468fa6874
parentfe04aafe6c27f32ad4ba38e552d06d14431cb2de [diff]
[AMDGPU] Constant folding of llvm.amdgcn.trig.preop (#98562)

If the parameters(the input and segment select) coming in to
amdgcn.trig.preop intrinsic are compile time constants, we pre-compute
the output of amdgcn.trig.preop on the CPU and replaces the uses with
the computed constant.

This work extends the patch https://reviews.llvm.org/D120150 to make it
a complete coverage.

For the segment select, only src1[4:0] are used. A segment select is
invalid if we are selecting the 53-bit segment beyond the [1200:0] range
of the 2/PI table. 0 is returned when a segment select is not valid.
2 files changed
tree: 123fa3f7f096540255ef5ece26c68a3468fa6874
  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. a-abfdec1d.o.tmp
  34. CODE_OF_CONDUCT.md
  35. CONTRIBUTING.md
  36. LICENSE.TXT
  37. pyproject.toml
  38. README.md
  39. 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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