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Revision tags: llvmorg-18.1.8, llvmorg-18.1.7, llvmorg-18.1.6, llvmorg-18.1.5, llvmorg-18.1.4, llvmorg-18.1.3, llvmorg-18.1.2, llvmorg-18.1.1, llvmorg-18.1.0, llvmorg-18.1.0-rc4, llvmorg-18.1.0-rc3, llvmorg-18.1.0-rc2, llvmorg-18.1.0-rc1, llvmorg-19-init, llvmorg-17.0.6, llvmorg-17.0.5, llvmorg-17.0.4, llvmorg-17.0.3, llvmorg-17.0.2, llvmorg-17.0.1, llvmorg-17.0.0, llvmorg-17.0.0-rc4, llvmorg-17.0.0-rc3
# 9c375a45 17-Aug-2023 Noah Goldstein <goldstein.w.n@gmail.com>

[InstCombine] Transform `(add (shl (neg X), Cnt))` -> `(sub (shl X, Cnt))`

Just a simple instruction save.

Proof: https://alive2.llvm.org/ce/z/Vb484j

Reviewed By: nikic

Differential Revision: htt

[InstCombine] Transform `(add (shl (neg X), Cnt))` -> `(sub (shl X, Cnt))`

Just a simple instruction save.

Proof: https://alive2.llvm.org/ce/z/Vb484j

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D154807

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Revision tags: llvmorg-17.0.0-rc2, llvmorg-17.0.0-rc1, llvmorg-18-init
# a6c02281 09-Jul-2023 Noah Goldstein <goldstein.w.n@gmail.com>

[InstCombine] Add tests for transforming `(add (shl (neg X), Cnt))`; NFC

Differential Revision: https://reviews.llvm.org/D154806