; LLVM IR from intuitive-robots/mdt_policy :: pyhash-0.9.3/src/smhasher/Hashes.ll (Z16NoopOAATReadHashPKvijPv)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z16NoopOAATReadHashPKvijPv(ptr noundef %0, i32 noundef %1, i32 noundef %2, ptr noundef %3) #1 {
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i8, align 1
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  store ptr %3, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %9) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %12, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #2
  store i32 0, ptr %11, align 4, !tbaa !9
  br label %13

13:                                               ; preds = %24, %4
  %14 = load i32, ptr %11, align 4, !tbaa !9
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = icmp slt i32 %14, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #2
  br label %27

18:                                               ; preds = %13
  %19 = load ptr, ptr %10, align 8, !tbaa !5
  %20 = load i32, ptr %11, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds i8, ptr %19, i64 %21
  %23 = load i8, ptr %22, align 1, !tbaa !11
  store volatile i8 %23, ptr %9, align 1, !tbaa !11
  br label %24

24:                                               ; preds = %18
  %25 = load i32, ptr %11, align 4, !tbaa !9
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %11, align 4, !tbaa !9
  br label %13, !llvm.loop !12

27:                                               ; preds = %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #2
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nofree norecurse nounwind memory(argmem: read, inaccessiblemem: readwrite) uwtable
define dso_local void @_Z16NoopOAATReadHashPKvijPv(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2, ptr nocapture noundef readnone %3) local_unnamed_addr #1 {
  %5 = alloca i8, align 1
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %5)
  %6 = icmp sgt i32 %1, 0
  br i1 %6, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %4
  %wide.trip.count = zext nneg i32 %1 to i64
  %xtraiter = and i64 %wide.trip.count, 7
  %7 = icmp ult i32 %1, 8
  br i1 %7, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %wide.trip.count, 2147483640
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.7, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.lr.ph.epil ], [ %indvars.iv.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %8 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.epil
  %9 = load i8, ptr %8, align 1, !tbaa !5
  store volatile i8 %9, ptr %5, align 1, !tbaa !5
  %indvars.iv.next.epil = add nuw nsw i64 %indvars.iv.epil, 1
  %epil.iter.next = add i64 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.lr.ph.epil, !llvm.loop !8

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil, %4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5)
  ret void

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.7, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.7, %.lr.ph ]
  %10 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv
  %11 = load i8, ptr %10, align 1, !tbaa !5
  store volatile i8 %11, ptr %5, align 1, !tbaa !5
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %12 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next
  %13 = load i8, ptr %12, align 1, !tbaa !5
  store volatile i8 %13, ptr %5, align 1, !tbaa !5
  %indvars.iv.next.1 = or disjoint i64 %indvars.iv, 2
  %14 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next.1
  %15 = load i8, ptr %14, align 1, !tbaa !5
  store volatile i8 %15, ptr %5, align 1, !tbaa !5
  %indvars.iv.next.2 = or disjoint i64 %indvars.iv, 3
  %16 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next.2
  %17 = load i8, ptr %16, align 1, !tbaa !5
  store volatile i8 %17, ptr %5, align 1, !tbaa !5
  %indvars.iv.next.3 = or disjoint i64 %indvars.iv, 4
  %18 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next.3
  %19 = load i8, ptr %18, align 1, !tbaa !5
  store volatile i8 %19, ptr %5, align 1, !tbaa !5
  %indvars.iv.next.4 = or disjoint i64 %indvars.iv, 5
  %20 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next.4
  %21 = load i8, ptr %20, align 1, !tbaa !5
  store volatile i8 %21, ptr %5, align 1, !tbaa !5
  %indvars.iv.next.5 = or disjoint i64 %indvars.iv, 6
  %22 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next.5
  %23 = load i8, ptr %22, align 1, !tbaa !5
  store volatile i8 %23, ptr %5, align 1, !tbaa !5
  %indvars.iv.next.6 = or disjoint i64 %indvars.iv, 7
  %24 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next.6
  %25 = load i8, ptr %24, align 1, !tbaa !5
  store volatile i8 %25, ptr %5, align 1, !tbaa !5
  %indvars.iv.next.7 = add nuw nsw i64 %indvars.iv, 8
  %niter.next.7 = add i64 %niter, 8
  %niter.ncmp.7 = icmp eq i64 %niter.next.7, %unroll_iter
  br i1 %niter.ncmp.7, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !10
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nofree norecurse nounwind memory(argmem: read, inaccessiblemem: readwrite) uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.unroll.disable"}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass