; LLVM IR from Mohammed-Shoaib/Coding-Problems :: CodeChef/Beginner/B0074.ll (Z7lazyJemiil)

; 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 i64 @_Z7lazyJemiil(i32 noundef %0, i32 noundef %1, i64 noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  %8 = alloca i64, align 8
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store i64 0, ptr %8, align 8, !tbaa !9
  br label %9

9:                                                ; preds = %12, %3
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = icmp ne i32 %10, 1
  br i1 %11, label %12, label %32

12:                                               ; preds = %9
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = sitofp i32 %13 to double
  %15 = fdiv double %14, 2.000000e+00
  %16 = call double @llvm.ceil.f64(double %15)
  %17 = fptosi double %16 to i32
  store i32 %17, ptr %7, align 4, !tbaa !5
  %18 = load i32, ptr %7, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = load i64, ptr %6, align 8, !tbaa !9
  %21 = mul nsw i64 %19, %20
  %22 = load i32, ptr %5, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = add nsw i64 %21, %23
  %25 = load i64, ptr %8, align 8, !tbaa !9
  %26 = add nsw i64 %25, %24
  store i64 %26, ptr %8, align 8, !tbaa !9
  %27 = load i32, ptr %7, align 4, !tbaa !5
  %28 = load i32, ptr %4, align 4, !tbaa !5
  %29 = sub nsw i32 %28, %27
  store i32 %29, ptr %4, align 4, !tbaa !5
  %30 = load i64, ptr %6, align 8, !tbaa !9
  %31 = mul nsw i64 %30, 2
  store i64 %31, ptr %6, align 8, !tbaa !9
  br label %9, !llvm.loop !11

32:                                               ; preds = %9
  %33 = load i32, ptr %4, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = load i64, ptr %6, align 8, !tbaa !9
  %36 = mul nsw i64 %34, %35
  %37 = load i64, ptr %8, align 8, !tbaa !9
  %38 = add nsw i64 %37, %36
  store i64 %38, ptr %8, align 8, !tbaa !9
  %39 = load i64, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  ret i64 %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 speculatable willreturn memory(none)
declare double @llvm.ceil.f64(double) #2

; 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { 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 = !{!"long", !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 i64 @_Z7lazyJemiil(i32 noundef %0, i32 noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %.not15 = icmp eq i32 %0, 1
  br i1 %.not15, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %4 = sext i32 %1 to i64
  br label %5

5:                                                ; preds = %.lr.ph, %5
  %.018 = phi i64 [ 0, %.lr.ph ], [ %13, %5 ]
  %.01317 = phi i32 [ %0, %.lr.ph ], [ %14, %5 ]
  %.01416 = phi i64 [ %2, %.lr.ph ], [ %15, %5 ]
  %6 = sitofp i32 %.01317 to double
  %7 = fmul double %6, 5.000000e-01
  %8 = tail call double @llvm.ceil.f64(double %7)
  %9 = fptosi double %8 to i32
  %10 = sext i32 %9 to i64
  %11 = mul nsw i64 %.01416, %10
  %12 = add i64 %.018, %4
  %13 = add i64 %12, %11
  %14 = sub nsw i32 %.01317, %9
  %15 = shl nsw i64 %.01416, 1
  %.not = icmp eq i32 %14, 1
  br i1 %.not, label %._crit_edge, label %5, !llvm.loop !5

._crit_edge:                                      ; preds = %5, %3
  %.014.lcssa = phi i64 [ %2, %3 ], [ %15, %5 ]
  %.0.lcssa = phi i64 [ 0, %3 ], [ %13, %5 ]
  %16 = add nsw i64 %.0.lcssa, %.014.lcssa
  ret i64 %16
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.ceil.f64(double) #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 = { mustprogress 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.mustprogress"}


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