[LoopFuse] Change DT to reference in FusionCandidate struct. NFC
authorAnna Thomas <anna@azul.com>
Wed, 2 Feb 2022 18:49:20 +0000 (13:49 -0500)
committerAnna Thomas <anna@azul.com>
Wed, 2 Feb 2022 19:55:37 +0000 (14:55 -0500)
commita73e4ce6a59b01f0e37037761c1e6889d539d233
treefbcf5038f4f41a337a296e7c8b18c106f2ea6973
parentfaabdfcf7f6704d5a7241d8b79b4dd5cc7a5527e
[LoopFuse] Change DT to reference in FusionCandidate struct. NFC

Assertion added in f50821cff0 confirms that the DT is indeed nonnull.
Change it to a reference instead of a pointer to make this explicit in
FusionCandidate.
Suggested in D118472.
llvm/lib/Transforms/Scalar/LoopFuse.cpp