[llvm] [VPlan] Replace PhiR operand of ComputeRdxResult with VPIRFlags. (PR #174026)

[via llvm-commits]

================
@@ -666,6 +667,18 @@ class VPIRFlags {
     CmpInst::Predicate Pred;
----------------
ayalz wrote:

BTW, how large is FCmpFlagsTy, does it determine the size of the union.

https://github.com/llvm/llvm-project/pull/174026