[PATCH] D103277: [RISCV] Teach VSETVLI insertion to look through PHIs to prove we don't need to insert a vsetvli.

[Roger Ferrer Ibanez via Phabricator via llvm-commits]

rogfer01 accepted this revision.
rogfer01 added a comment.
This revision is now accepted and ready to land.

LGTM. Thanks @craig.topper



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Comment at: llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp:36
 
+static cl::opt<bool> DisableInsertVSETVLPHIOpt(
+    "riscv-disable-insert-vsetvl-phi-opt", cl::init(false), cl::Hidden,
----------------
Just curious here: do you foresee this might get expensive or this is a debugging utility?


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  https://reviews.llvm.org/D103277/new/

https://reviews.llvm.org/D103277