llvm-project
[GIsel] import `(not (add X, -1)) -> (neg X)` to GlobalISel
#181640

Merged

[GIsel] import `(not (add X, -1)) -> (neg X)` to GlobalISel #181640

arsenm merged 13 commits into llvm:main from luisacicolini:luisa/add-neg-one

chore: rewrite

0aaa0801

luisacicolini commented on 2026-02-16

Apply suggestion from @luisacicolini

726ae8ed

chore: unwanted change

2f6157f6

chore: unwanted change

8e7b77a7

chore: update

55efe738

luisacicolini commented on 2026-02-16

Update llvm/include/llvm/Target/GlobalISel/Combine.td

9b28c4a0

luisacicolini changed the title ~~[RISCV][backend] port `(not (add X, -1)) -> (neg X)` to GlobalISel~~ [GIsel] port `(not (add X, -1)) -> (neg X)` to GlobalISel 42 days ago

luisacicolini changed the title ~~[GIsel] port `(not (add X, -1)) -> (neg X)` to GlobalISel~~ [GIsel] import `(not (add X, -1)) -> (neg X)` to GlobalISel 42 days ago

luisacicolini marked this pull request as ready for review 42 days ago

llvmbot added backend:AArch64

llvmbot added llvm:globalisel

arsenm commented on 2026-02-19

add oneUse check

afc2eb64

fix build and add one test

f1ad3ec8

topperc commented on 2026-02-19

tests and typos

28d8bbe9

chore: fix name

b9a6d69d

chore: neg test

cd6d9837

chore: better test

59bdd46b

chore: newl

bb2618e5

arsenm approved these changes on 2026-02-19

arsenm merged 0dafeb97 into main 39 days ago

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llvm-project [GIsel] import `(not (add X, -1)) -> (neg X)` to GlobalISel #181640 Merged

[GIsel] import `(not (add X, -1)) -> (neg X)` to GlobalISel #181640

llvm-project
[GIsel] import `(not (add X, -1)) -> (neg X)` to GlobalISel
#181640

Merged