; LLVM IR from kazunetakahashi/atcoder :: 201510_201609/0828_ARC060/E3.ll (Z7minimumii)

; 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 uwtable
declare dso_local noundef i32 @_Z1gii(i32 noundef, i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z7minimumii(i32 noundef %0, i32 noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  %7 = load i32, ptr %5, align 4, !tbaa !5
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = icmp sle i32 %7, %8
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  store i32 0, ptr %3, align 4
  br label %32

11:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 1, ptr %6, align 4, !tbaa !5
  br label %12

12:                                               ; preds = %18, %11
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = load i32, ptr %6, align 4, !tbaa !5
  %15 = call noundef i32 @_Z1gii(i32 noundef %13, i32 noundef %14)
  %16 = load i32, ptr %5, align 4, !tbaa !5
  %17 = icmp slt i32 %15, %16
  br i1 %17, label %18, label %21

18:                                               ; preds = %12
  %19 = load i32, ptr %6, align 4, !tbaa !5
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %6, align 4, !tbaa !5
  br label %12, !llvm.loop !9

21:                                               ; preds = %12
  %22 = load i32, ptr %6, align 4, !tbaa !5
  %23 = sub nsw i32 %22, 1
  store i32 %23, ptr %6, align 4, !tbaa !5
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = shl i32 1, %24
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %27 = load i32, ptr %6, align 4, !tbaa !5
  %28 = call noundef i32 @_Z1gii(i32 noundef %26, i32 noundef %27)
  %29 = load i32, ptr %5, align 4, !tbaa !5
  %30 = call noundef i32 @_Z7minimumii(i32 noundef %28, i32 noundef %29)
  %31 = add nsw i32 %25, %30
  store i32 %31, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %32

32:                                               ; preds = %21, %10
  %33 = load i32, ptr %3, align 4
  ret i32 %33
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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 uwtable
declare dso_local noundef i32 @_Z1gii(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z7minimumii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %.not16 = icmp sgt i32 %1, %0
  br i1 %.not16, label %.preheader, label %tailrecurse._crit_edge

.preheader:                                       ; preds = %2, %tailrecurse
  %.tr18 = phi i32 [ %9, %tailrecurse ], [ %0, %2 ]
  %accumulator.tr17 = phi i32 [ %10, %tailrecurse ], [ 0, %2 ]
  br label %3

3:                                                ; preds = %3, %.preheader
  %.0 = phi i32 [ %6, %3 ], [ 1, %.preheader ]
  %4 = tail call noundef i32 @_Z1gii(i32 noundef %.tr18, i32 noundef %.0)
  %5 = icmp slt i32 %4, %1
  %6 = add nuw nsw i32 %.0, 1
  br i1 %5, label %3, label %tailrecurse, !llvm.loop !5

tailrecurse:                                      ; preds = %3
  %7 = add nsw i32 %.0, -1
  %8 = shl nuw i32 1, %7
  %9 = tail call noundef i32 @_Z1gii(i32 noundef %.tr18, i32 noundef %7)
  %10 = add nsw i32 %8, %accumulator.tr17
  %.not = icmp slt i32 %9, %1
  br i1 %.not, label %.preheader, label %tailrecurse._crit_edge

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %2
  %accumulator.tr.lcssa = phi i32 [ 0, %2 ], [ %10, %tailrecurse ]
  ret i32 %accumulator.tr.lcssa
}

attributes #0 = { mustprogress 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass