; LLVM IR from sbshah97/DS-Algo-Handbook :: Algorithms/Sort_Algorithms/Insertion_Sort (insertion-sort)

; 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"

@.str = external hidden unnamed_addr constant [40 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [23 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [22 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  %8 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %4)
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = zext i32 %10 to i64
  %12 = call ptr @llvm.stacksave.p0()
  store ptr %12, ptr %6, align 8
  %13 = alloca i32, i64 %11, align 16
  store i64 %11, ptr %7, align 8
  %14 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %15

15:                                               ; preds = %24, %0
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = icmp slt i32 %16, %17
  br i1 %18, label %19, label %27

19:                                               ; preds = %15
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds i32, ptr %13, i64 %21
  %23 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %22)
  br label %24

24:                                               ; preds = %19
  %25 = load i32, ptr %2, align 4, !tbaa !5
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %2, align 4, !tbaa !5
  br label %15, !llvm.loop !9

27:                                               ; preds = %15
  %28 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %29

29:                                               ; preds = %39, %27
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %31 = load i32, ptr %4, align 4, !tbaa !5
  %32 = icmp slt i32 %30, %31
  br i1 %32, label %33, label %42

33:                                               ; preds = %29
  %34 = load i32, ptr %2, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds i32, ptr %13, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !5
  %38 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %37)
  br label %39

39:                                               ; preds = %33
  %40 = load i32, ptr %2, align 4, !tbaa !5
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %2, align 4, !tbaa !5
  br label %29, !llvm.loop !11

42:                                               ; preds = %29
  store i32 1, ptr %2, align 4, !tbaa !5
  br label %43

43:                                               ; preds = %83, %42
  %44 = load i32, ptr %2, align 4, !tbaa !5
  %45 = load i32, ptr %4, align 4, !tbaa !5
  %46 = icmp slt i32 %44, %45
  br i1 %46, label %47, label %86

47:                                               ; preds = %43
  %48 = load i32, ptr %2, align 4, !tbaa !5
  %49 = sext i32 %48 to i64
  %50 = getelementptr inbounds i32, ptr %13, i64 %49
  %51 = load i32, ptr %50, align 4, !tbaa !5
  store i32 %51, ptr %5, align 4, !tbaa !5
  %52 = load i32, ptr %2, align 4, !tbaa !5
  %53 = sub nsw i32 %52, 1
  store i32 %53, ptr %3, align 4, !tbaa !5
  br label %54

54:                                               ; preds = %66, %47
  %55 = load i32, ptr %5, align 4, !tbaa !5
  %56 = load i32, ptr %3, align 4, !tbaa !5
  %57 = sext i32 %56 to i64
  %58 = getelementptr inbounds i32, ptr %13, i64 %57
  %59 = load i32, ptr %58, align 4, !tbaa !5
  %60 = icmp slt i32 %55, %59
  br i1 %60, label %61, label %64

61:                                               ; preds = %54
  %62 = load i32, ptr %3, align 4, !tbaa !5
  %63 = icmp sge i32 %62, 0
  br label %64

64:                                               ; preds = %61, %54
  %65 = phi i1 [ false, %54 ], [ %63, %61 ]
  br i1 %65, label %66, label %77

66:                                               ; preds = %64
  %67 = load i32, ptr %3, align 4, !tbaa !5
  %68 = sext i32 %67 to i64
  %69 = getelementptr inbounds i32, ptr %13, i64 %68
  %70 = load i32, ptr %69, align 4, !tbaa !5
  %71 = load i32, ptr %3, align 4, !tbaa !5
  %72 = add nsw i32 %71, 1
  %73 = sext i32 %72 to i64
  %74 = getelementptr inbounds i32, ptr %13, i64 %73
  store i32 %70, ptr %74, align 4, !tbaa !5
  %75 = load i32, ptr %3, align 4, !tbaa !5
  %76 = sub nsw i32 %75, 1
  store i32 %76, ptr %3, align 4, !tbaa !5
  br label %54, !llvm.loop !12

77:                                               ; preds = %64
  %78 = load i32, ptr %5, align 4, !tbaa !5
  %79 = load i32, ptr %3, align 4, !tbaa !5
  %80 = add nsw i32 %79, 1
  %81 = sext i32 %80 to i64
  %82 = getelementptr inbounds i32, ptr %13, i64 %81
  store i32 %78, ptr %82, align 4, !tbaa !5
  br label %83

83:                                               ; preds = %77
  %84 = load i32, ptr %2, align 4, !tbaa !5
  %85 = add nsw i32 %84, 1
  store i32 %85, ptr %2, align 4, !tbaa !5
  br label %43, !llvm.loop !13

86:                                               ; preds = %43
  %87 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %88

88:                                               ; preds = %98, %86
  %89 = load i32, ptr %2, align 4, !tbaa !5
  %90 = load i32, ptr %4, align 4, !tbaa !5
  %91 = icmp slt i32 %89, %90
  br i1 %91, label %92, label %101

92:                                               ; preds = %88
  %93 = load i32, ptr %2, align 4, !tbaa !5
  %94 = sext i32 %93 to i64
  %95 = getelementptr inbounds i32, ptr %13, i64 %94
  %96 = load i32, ptr %95, align 4, !tbaa !5
  %97 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %96)
  br label %98

98:                                               ; preds = %92
  %99 = load i32, ptr %2, align 4, !tbaa !5
  %100 = add nsw i32 %99, 1
  store i32 %100, ptr %2, align 4, !tbaa !5
  br label %88, !llvm.loop !14

101:                                              ; preds = %88
  store i32 0, ptr %1, align 4
  %102 = load ptr, ptr %6, align 8
  call void @llvm.stackrestore.p0(ptr %102)
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  %103 = load i32, ptr %1, align 4
  ret i32 %103
}

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

declare i32 @printf(ptr noundef, ...) #2

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #3

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

attributes #0 = { 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 = { "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 #3 = { nocallback nofree nosync nounwind willreturn }
attributes #4 = { 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/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}
!13 = distinct !{!13, !10}
!14 = distinct !{!14, !10}


; 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"

@.str = external hidden unnamed_addr constant [40 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [23 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [22 x i8], align 1

; Function Attrs: nofree nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  %2 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %1)
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = zext i32 %4 to i64
  %6 = call ptr @llvm.stacksave.p0()
  %7 = alloca i32, i64 %5, align 16
  %8 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  %9 = load i32, ptr %1, align 4, !tbaa !5
  %10 = icmp sgt i32 %9, 0
  br i1 %10, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %11 = getelementptr inbounds i32, ptr %7, i64 %indvars.iv
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %11)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %13 = load i32, ptr %1, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = icmp slt i64 %indvars.iv.next, %14
  br i1 %15, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %0
  %16 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %17 = load i32, ptr %1, align 4, !tbaa !5
  %18 = icmp sgt i32 %17, 0
  br i1 %18, label %.lr.ph28, label %._crit_edge40

.preheader:                                       ; preds = %.lr.ph28
  %invariant.gep36 = getelementptr i8, ptr %7, i64 4
  %19 = icmp sgt i32 %24, 1
  br i1 %19, label %.lr.ph39, label %._crit_edge40

.lr.ph39:                                         ; preds = %.preheader
  %20 = add nsw i32 %24, -1
  %wide.trip.count = zext nneg i32 %20 to i64
  br label %27

.lr.ph28:                                         ; preds = %._crit_edge, %.lr.ph28
  %indvars.iv47 = phi i64 [ %indvars.iv.next48, %.lr.ph28 ], [ 0, %._crit_edge ]
  %21 = getelementptr inbounds i32, ptr %7, i64 %indvars.iv47
  %22 = load i32, ptr %21, align 4, !tbaa !5
  %23 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %22)
  %indvars.iv.next48 = add nuw nsw i64 %indvars.iv47, 1
  %24 = load i32, ptr %1, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = icmp slt i64 %indvars.iv.next48, %25
  br i1 %26, label %.lr.ph28, label %.preheader, !llvm.loop !11

27:                                               ; preds = %.lr.ph39, %._crit_edge34
  %indvars.iv55 = phi i64 [ 1, %.lr.ph39 ], [ %indvars.iv.next56, %._crit_edge34 ]
  %indvars.iv50 = phi i64 [ 0, %.lr.ph39 ], [ %indvars.iv.next51, %._crit_edge34 ]
  %28 = getelementptr inbounds i32, ptr %7, i64 %indvars.iv55
  %29 = load i32, ptr %28, align 4, !tbaa !5
  %30 = add nsw i64 %indvars.iv55, -1
  %31 = getelementptr inbounds i32, ptr %7, i64 %30
  %32 = load i32, ptr %31, align 4, !tbaa !5
  %33 = icmp slt i32 %29, %32
  br i1 %33, label %.lr.ph33, label %._crit_edge34

.lr.ph33:                                         ; preds = %27, %.lr.ph33
  %indvars.iv52 = phi i64 [ %indvars.iv.next53, %.lr.ph33 ], [ %indvars.iv50, %27 ]
  %34 = phi i32 [ %36, %.lr.ph33 ], [ %32, %27 ]
  %gep = getelementptr inbounds i32, ptr %invariant.gep36, i64 %indvars.iv52
  store i32 %34, ptr %gep, align 4, !tbaa !5
  %indvars.iv.next53 = add nsw i64 %indvars.iv52, -1
  %35 = getelementptr inbounds i32, ptr %7, i64 %indvars.iv.next53
  %36 = load i32, ptr %35, align 4, !tbaa !5
  %37 = icmp slt i32 %29, %36
  %38 = icmp sgt i64 %indvars.iv52, 0
  %39 = and i1 %38, %37
  br i1 %39, label %.lr.ph33, label %._crit_edge34, !llvm.loop !12

._crit_edge34:                                    ; preds = %.lr.ph33, %27
  %.lcssa29 = phi i64 [ %30, %27 ], [ %indvars.iv.next53, %.lr.ph33 ]
  %gep37 = getelementptr i32, ptr %invariant.gep36, i64 %.lcssa29
  store i32 %29, ptr %gep37, align 4, !tbaa !5
  %indvars.iv.next56 = add nuw nsw i64 %indvars.iv55, 1
  %indvars.iv.next51 = add nuw nsw i64 %indvars.iv50, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next51, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge40, label %27, !llvm.loop !13

._crit_edge40:                                    ; preds = %._crit_edge34, %._crit_edge, %.preheader
  %40 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5)
  %41 = load i32, ptr %1, align 4, !tbaa !5
  %42 = icmp sgt i32 %41, 0
  br i1 %42, label %.lr.ph43, label %._crit_edge44

.lr.ph43:                                         ; preds = %._crit_edge40, %.lr.ph43
  %indvars.iv59 = phi i64 [ %indvars.iv.next60, %.lr.ph43 ], [ 0, %._crit_edge40 ]
  %43 = getelementptr inbounds i32, ptr %7, i64 %indvars.iv59
  %44 = load i32, ptr %43, align 4, !tbaa !5
  %45 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %44)
  %indvars.iv.next60 = add nuw nsw i64 %indvars.iv59, 1
  %46 = load i32, ptr %1, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = icmp slt i64 %indvars.iv.next60, %47
  br i1 %48, label %.lr.ph43, label %._crit_edge44, !llvm.loop !14

._crit_edge44:                                    ; preds = %.lr.ph43, %._crit_edge40
  call void @llvm.stackrestore.p0(ptr %6)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #4
  ret i32 0
}

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

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #3

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

attributes #0 = { nofree 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind "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 #3 = { mustprogress nocallback nofree nosync nounwind willreturn }
attributes #4 = { 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/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}
!13 = distinct !{!13, !10}
!14 = distinct !{!14, !10}


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