llvm-project

History

[X86] Convert logicalshift(x, C) -> and(x, M) iff x is allsignbits (#83596 )

If we're logical shifting an all-signbits value, then we can just mask out the shifted bits.

This helps removes some unnecessary bitcasted vXi16 shifts used for vXi8 shifts (which SimplifyDemandedBits will struggle to remove through the bitcast), and allows some AVX1 shifts of 256-bit values to stay as a YMM instruction.

Noticed in codegen from #82290

2024-03-02 12:44:33 +00:00

benchmarks

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bindings

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cmake

[CMake][LIT] Add option to run lit testsuites in parallel (#82899 )

2024-02-28 11:53:12 -07:00

docs

[llvm-readobj] enable demangle option for the xcoff object file (#78455 )

2024-03-01 09:21:11 -05:00

examples

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include

Revert "[Dwarf] Support __ptrauth qualifier in metadata nodes" (#83672 )

2024-03-02 14:48:46 +03:00

lib

[X86] Convert logicalshift(x, C) -> and(x, M) iff x is allsignbits (#83596 )

2024-03-02 12:44:33 +00:00

projects

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resources

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runtimes

[libc] Rework the GPU build to be a regular target (#81921 )

2024-02-22 15:29:29 -06:00

test

[X86] Convert logicalshift(x, C) -> and(x, M) iff x is allsignbits (#83596 )

2024-03-02 12:44:33 +00:00

tools

[llvm-readobj] enable demangle option for the xcoff object file (#78455 )

2024-03-01 09:21:11 -05:00

unittests

Revert "[Dwarf] Support __ptrauth qualifier in metadata nodes" (#83672 )

2024-03-02 14:48:46 +03:00

utils

[MC] Teach checkAsmTiedOperandConstraints about optional operands (#81381 )

2024-03-01 13:00:39 +03:00

.clang-format

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.clang-tidy

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.gitattributes

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.gitignore

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CMakeLists.txt

[CMake][LIT] Add option to run lit testsuites in parallel (#82899 )

2024-02-28 11:53:12 -07:00

CODE_OWNERS.TXT

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configure

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CREDITS.TXT

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LICENSE.TXT

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llvm.spec.in

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README.txt

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RELEASE_TESTERS.TXT

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README.txt

The LLVM Compiler Infrastructure
================================

This directory and its subdirectories contain source code for LLVM,
a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you are writing a package for LLVM, see docs/Packaging.rst for our
suggestions.