; LLVM IR from MrSupW/C-Source-Code-of-Sorting-Algorithm :: 排序3 直接插入排序.ll (Z10InsertSortPii)

; 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 void @_Z10InsertSortPii(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 1, ptr %5, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %63, %2
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = load i32, ptr %4, align 4, !tbaa !9
  %11 = icmp slt i32 %9, %10
  br i1 %11, label %12, label %66

12:                                               ; preds = %8
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = sub nsw i32 %14, 1
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds i32, ptr %13, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !9
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds i32, ptr %19, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !9
  %24 = icmp sgt i32 %18, %23
  br i1 %24, label %25, label %62

25:                                               ; preds = %12
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = load i32, ptr %5, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds i32, ptr %26, i64 %28
  %30 = load i32, ptr %29, align 4, !tbaa !9
  store i32 %30, ptr %7, align 4, !tbaa !9
  %31 = load i32, ptr %5, align 4, !tbaa !9
  %32 = sub nsw i32 %31, 1
  store i32 %32, ptr %6, align 4, !tbaa !9
  br label %33

33:                                               ; preds = %52, %25
  %34 = load ptr, ptr %3, align 8, !tbaa !5
  %35 = load i32, ptr %6, align 4, !tbaa !9
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds i32, ptr %34, i64 %36
  %38 = load i32, ptr %37, align 4, !tbaa !9
  %39 = load i32, ptr %7, align 4, !tbaa !9
  %40 = icmp sgt i32 %38, %39
  br i1 %40, label %41, label %55

41:                                               ; preds = %33
  %42 = load ptr, ptr %3, align 8, !tbaa !5
  %43 = load i32, ptr %6, align 4, !tbaa !9
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds i32, ptr %42, i64 %44
  %46 = load i32, ptr %45, align 4, !tbaa !9
  %47 = load ptr, ptr %3, align 8, !tbaa !5
  %48 = load i32, ptr %6, align 4, !tbaa !9
  %49 = add nsw i32 %48, 1
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds i32, ptr %47, i64 %50
  store i32 %46, ptr %51, align 4, !tbaa !9
  br label %52

52:                                               ; preds = %41
  %53 = load i32, ptr %6, align 4, !tbaa !9
  %54 = add nsw i32 %53, -1
  store i32 %54, ptr %6, align 4, !tbaa !9
  br label %33, !llvm.loop !11

55:                                               ; preds = %33
  %56 = load i32, ptr %7, align 4, !tbaa !9
  %57 = load ptr, ptr %3, align 8, !tbaa !5
  %58 = load i32, ptr %6, align 4, !tbaa !9
  %59 = add nsw i32 %58, 1
  %60 = sext i32 %59 to i64
  %61 = getelementptr inbounds i32, ptr %57, i64 %60
  store i32 %56, ptr %61, align 4, !tbaa !9
  br label %62

62:                                               ; preds = %55, %12
  br label %63

63:                                               ; preds = %62
  %64 = load i32, ptr %5, align 4, !tbaa !9
  %65 = add nsw i32 %64, 1
  store i32 %65, ptr %5, align 4, !tbaa !9
  br label %8, !llvm.loop !13

66:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret void
}

; 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 = !{!"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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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 memory(argmem: readwrite) uwtable
define dso_local void @_Z10InsertSortPii(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 1
  br i1 %3, label %.lr.ph26.preheader, label %._crit_edge27

.lr.ph26.preheader:                               ; preds = %2
  %4 = add nsw i32 %1, -1
  %wide.trip.count = zext nneg i32 %4 to i64
  %invariant.gep34 = getelementptr i8, ptr %0, i64 -4
  %invariant.gep = getelementptr i8, ptr %0, i64 4
  br label %.lr.ph26

.lr.ph26:                                         ; preds = %.lr.ph26.preheader, %13
  %indvars.iv31 = phi i64 [ 1, %.lr.ph26.preheader ], [ %indvars.iv.next32, %13 ]
  %indvars.iv = phi i64 [ 0, %.lr.ph26.preheader ], [ %indvars.iv.next, %13 ]
  %gep35 = getelementptr i32, ptr %invariant.gep34, i64 %indvars.iv31
  %5 = load i32, ptr %gep35, align 4, !tbaa !5
  %6 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv31
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = icmp sgt i32 %5, %7
  br i1 %8, label %.lr.ph, label %13

.lr.ph:                                           ; preds = %.lr.ph26, %.lr.ph
  %indvars.iv28 = phi i64 [ %indvars.iv.next29, %.lr.ph ], [ %indvars.iv, %.lr.ph26 ]
  %9 = phi i32 [ %11, %.lr.ph ], [ %5, %.lr.ph26 ]
  %gep = getelementptr i32, ptr %invariant.gep, i64 %indvars.iv28
  store i32 %9, ptr %gep, align 4, !tbaa !5
  %indvars.iv.next29 = add nsw i64 %indvars.iv28, -1
  %10 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv.next29
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %12 = icmp sgt i32 %11, %7
  br i1 %12, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph
  %gep37 = getelementptr i32, ptr %0, i64 %indvars.iv28
  store i32 %7, ptr %gep37, align 4, !tbaa !5
  br label %13

13:                                               ; preds = %.lr.ph26, %._crit_edge
  %indvars.iv.next32 = add nuw nsw i64 %indvars.iv31, 1
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge27, label %.lr.ph26, !llvm.loop !11

._crit_edge27:                                    ; preds = %13, %2
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind memory(argmem: 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


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