[LoopReroll] Remove unused and unmaintained pass

llvm/lib/Passes/PassBuilder.cpp

@@ -216,7 +216,6 @@
 #include "llvm/Transforms/Scalar/LoopLoadElimination.h"
 #include "llvm/Transforms/Scalar/LoopPassManager.h"
 #include "llvm/Transforms/Scalar/LoopPredication.h"
-#include "llvm/Transforms/Scalar/LoopReroll.h"
 #include "llvm/Transforms/Scalar/LoopRotation.h"
 #include "llvm/Transforms/Scalar/LoopSimplifyCFG.h"
 #include "llvm/Transforms/Scalar/LoopSink.h"

llvm/lib/Passes/PassRegistry.def

@@ -599,7 +599,6 @@ LOOP_PASS("loop-idiom", LoopIdiomRecognizePass())
 LOOP_PASS("loop-instsimplify", LoopInstSimplifyPass())
 LOOP_PASS("loop-predication", LoopPredicationPass())
 LOOP_PASS("loop-reduce", LoopStrengthReducePass())
-LOOP_PASS("loop-reroll", LoopRerollPass())
 LOOP_PASS("loop-simplifycfg", LoopSimplifyCFGPass())
 LOOP_PASS("loop-unroll-full", LoopFullUnrollPass())
 LOOP_PASS("loop-versioning-licm", LoopVersioningLICMPass())

llvm/lib/Transforms/Scalar/CMakeLists.txt

@@ -40,7 +40,6 @@ add_llvm_component_library(LLVMScalarOpts
   LoopLoadElimination.cpp
   LoopPassManager.cpp
   LoopPredication.cpp
-  LoopRerollPass.cpp
   LoopRotation.cpp
   LoopSimplifyCFG.cpp
   LoopStrengthReduce.cpp