; LLVM IR from intuitive-robots/mdt_policy :: pyhash-0.9.3/src/smhasher/Stats.ll (Z7chooseKii)

; 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: mustprogress nounwind uwtable
define dso_local noundef double @_Z7chooseKii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca double, align 8
  %6 = alloca i32, align 4
  %7 = alloca double, align 8
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = load i32, ptr %3, align 4, !tbaa !5
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = sub nsw i32 %9, %10
  %12 = icmp sgt i32 %8, %11
  br i1 %12, label %13, label %17

13:                                               ; preds = %2
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = load i32, ptr %4, align 4, !tbaa !5
  %16 = sub nsw i32 %14, %15
  store i32 %16, ptr %4, align 4, !tbaa !5
  br label %17

17:                                               ; preds = %13, %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  store double 1.000000e+00, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %18

18:                                               ; preds = %35, %17
  %19 = load i32, ptr %6, align 4, !tbaa !5
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = icmp slt i32 %19, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %38

23:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %24 = load i32, ptr %3, align 4, !tbaa !5
  %25 = load i32, ptr %6, align 4, !tbaa !5
  %26 = sub nsw i32 %24, %25
  %27 = sitofp i32 %26 to double
  %28 = load i32, ptr %6, align 4, !tbaa !5
  %29 = add nsw i32 %28, 1
  %30 = sitofp i32 %29 to double
  %31 = fdiv double %27, %30
  store double %31, ptr %7, align 8, !tbaa !9
  %32 = load double, ptr %7, align 8, !tbaa !9
  %33 = load double, ptr %5, align 8, !tbaa !9
  %34 = fmul double %33, %32
  store double %34, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  br label %35

35:                                               ; preds = %23
  %36 = load i32, ptr %6, align 4, !tbaa !5
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %6, align 4, !tbaa !5
  br label %18, !llvm.loop !11

38:                                               ; preds = %22
  %39 = load double, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret double %39
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"double", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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 nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef double @_Z7chooseKii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = sub nsw i32 %0, %1
  %spec.select = tail call i32 @llvm.smin.i32(i32 %3, i32 %1)
  %4 = icmp sgt i32 %spec.select, 0
  br i1 %4, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %2
  %xtraiter = and i32 %spec.select, 3
  %5 = icmp ult i32 %spec.select, 4
  br i1 %5, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i32 %spec.select, 2147483644
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa.ph = phi double [ poison, %.lr.ph.preheader ], [ %35, %.lr.ph ]
  %.01318.unr = phi i32 [ 0, %.lr.ph.preheader ], [ %32, %.lr.ph ]
  %.01417.unr = phi double [ 1.000000e+00, %.lr.ph.preheader ], [ %35, %.lr.ph ]
  %lcmp.mod.not = icmp eq i32 %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
  %.01318.epil = phi i32 [ %8, %.lr.ph.epil ], [ %.01318.unr, %._crit_edge.loopexit.unr-lcssa ]
  %.01417.epil = phi double [ %11, %.lr.ph.epil ], [ %.01417.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i32 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %6 = sub nsw i32 %0, %.01318.epil
  %7 = sitofp i32 %6 to double
  %8 = add nuw nsw i32 %.01318.epil, 1
  %9 = uitofp nneg i32 %8 to double
  %10 = fdiv double %7, %9
  %11 = fmul double %.01417.epil, %10
  %epil.iter.next = add i32 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i32 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.lr.ph.epil, !llvm.loop !5

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil, %2
  %.014.lcssa = phi double [ 1.000000e+00, %2 ], [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %11, %.lr.ph.epil ]
  ret double %.014.lcssa

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %.01318 = phi i32 [ 0, %.lr.ph.preheader.new ], [ %32, %.lr.ph ]
  %.01417 = phi double [ 1.000000e+00, %.lr.ph.preheader.new ], [ %35, %.lr.ph ]
  %niter = phi i32 [ 0, %.lr.ph.preheader.new ], [ %niter.next.3, %.lr.ph ]
  %12 = sub nsw i32 %0, %.01318
  %13 = sitofp i32 %12 to double
  %14 = or disjoint i32 %.01318, 1
  %15 = uitofp nneg i32 %14 to double
  %16 = fdiv double %13, %15
  %17 = fmul double %.01417, %16
  %18 = sub nsw i32 %0, %14
  %19 = sitofp i32 %18 to double
  %20 = or disjoint i32 %.01318, 2
  %21 = uitofp nneg i32 %20 to double
  %22 = fdiv double %19, %21
  %23 = fmul double %17, %22
  %24 = sub nsw i32 %0, %20
  %25 = sitofp i32 %24 to double
  %26 = or disjoint i32 %.01318, 3
  %27 = uitofp nneg i32 %26 to double
  %28 = fdiv double %25, %27
  %29 = fmul double %23, %28
  %30 = sub nsw i32 %0, %26
  %31 = sitofp i32 %30 to double
  %32 = add nuw nsw i32 %.01318, 4
  %33 = uitofp nneg i32 %32 to double
  %34 = fdiv double %31, %33
  %35 = fmul double %29, %34
  %niter.next.3 = add i32 %niter, 4
  %niter.ncmp.3 = icmp eq i32 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !7
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smin.i32(i32, i32) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) 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 #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.unroll.disable"}
!7 = distinct !{!7, !8}
!8 = !{!"llvm.loop.mustprogress"}


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