llvm-project
[GIsel] Add combine (sub a, (mul x, C)) -> (add a, (mul x, -C))
#194282

Merged

[GIsel] Add combine (sub a, (mul x, C)) -> (add a, (mul x, -C)) #194282

AlexMaclean merged 3 commits into llvm:main from AlexMaclean:dev/amaclean/combine-sub_of_mul_const

AlexMaclean requested a review from

arsenm 53 days ago

AlexMaclean assigned

AlexMaclean 53 days ago

llvmbot added backend:AArch64

llvmbot added backend:AMDGPU

llvmbot added llvm:globalisel

arsenm commented on 2026-04-27

AlexMaclean force pushed from 7cb7df9f to 82f52034 53 days ago

arsenm approved these changes on 2026-04-30

[GIsel] Add combine (sub a, (mul x, C)) -> (add a, (mul x, -C))

11bff6c3

fixup tests

b6ef4e24

fixup

bca08013

AlexMaclean force pushed from 82f52034 to bca08013 46 days ago

arsenm approved these changes on 2026-05-04

AlexMaclean merged 4e32fa99 into main 46 days ago

Reviewers

arsenm

Assignees

AlexMaclean

Labels

backend:AArch64 backend:AMDGPU llvm:globalisel

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