; LLVM IR from cvra/robot-software :: lib/cmp/test (buf)

; 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"

%struct.buf_s = type { i64, i64, i64, ptr }

@.str.3 = external hidden unnamed_addr constant [54 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

declare void @error_and_exit(ptr noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local void @M_BufferEnsureTotalCapacity(ptr noundef %0, i64 noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !9
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.buf_s, ptr %6, i32 0, i32 0
  %8 = load i64, ptr %7, align 8, !tbaa !11
  %9 = load i64, ptr %4, align 8, !tbaa !9
  %10 = icmp ult i64 %8, %9
  br i1 %10, label %11, label %44

11:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #5
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.buf_s, ptr %12, i32 0, i32 0
  %14 = load i64, ptr %13, align 8, !tbaa !11
  store i64 %14, ptr %5, align 8, !tbaa !9
  %15 = load i64, ptr %4, align 8, !tbaa !9
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.buf_s, ptr %16, i32 0, i32 0
  store i64 %15, ptr %17, align 8, !tbaa !11
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.buf_s, ptr %18, i32 0, i32 3
  %20 = load ptr, ptr %19, align 8, !tbaa !13
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.buf_s, ptr %21, i32 0, i32 0
  %23 = load i64, ptr %22, align 8, !tbaa !11
  %24 = mul i64 %23, 1
  %25 = call ptr @realloc(ptr noundef %20, i64 noundef %24) #6
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.buf_s, ptr %26, i32 0, i32 3
  store ptr %25, ptr %27, align 8, !tbaa !13
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.buf_s, ptr %28, i32 0, i32 3
  %30 = load ptr, ptr %29, align 8, !tbaa !13
  %31 = icmp eq ptr %30, null
  br i1 %31, label %32, label %33

32:                                               ; preds = %11
  call void @error_and_exit(ptr noundef @.str.3)
  br label %33

33:                                               ; preds = %32, %11
  %34 = load ptr, ptr %3, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.buf_s, ptr %34, i32 0, i32 3
  %36 = load ptr, ptr %35, align 8, !tbaa !13
  %37 = load i64, ptr %5, align 8, !tbaa !9
  %38 = getelementptr inbounds i8, ptr %36, i64 %37
  %39 = load ptr, ptr %3, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.buf_s, ptr %39, i32 0, i32 0
  %41 = load i64, ptr %40, align 8, !tbaa !11
  %42 = load i64, ptr %5, align 8, !tbaa !9
  %43 = sub i64 %41, %42
  call void @llvm.memset.p0.i64(ptr align 1 %38, i8 0, i64 %43, i1 false)
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  br label %44

44:                                               ; preds = %33, %2
  ret void
}

; Function Attrs: nounwind allocsize(1)
declare ptr @realloc(ptr noundef, i64 noundef) #3

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 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 #3 = { nounwind allocsize(1) "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 #4 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #5 = { nounwind }
attributes #6 = { nounwind allocsize(1) }

!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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"buf_s", !10, i64 0, !10, i64 8, !10, i64 16, !6, i64 24}
!13 = !{!12, !6, i64 24}


; 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.3 = external hidden unnamed_addr constant [54 x i8], align 1

declare void @error_and_exit(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @M_BufferEnsureTotalCapacity(ptr nocapture noundef %0, i64 noundef %1) local_unnamed_addr #1 {
  %3 = load i64, ptr %0, align 8, !tbaa !5
  %4 = icmp ult i64 %3, %1
  br i1 %4, label %5, label %16

5:                                                ; preds = %2
  store i64 %1, ptr %0, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 24
  %7 = load ptr, ptr %6, align 8, !tbaa !11
  %8 = tail call ptr @realloc(ptr noundef %7, i64 noundef %1) #4
  store ptr %8, ptr %6, align 8, !tbaa !11
  %9 = icmp eq ptr %8, null
  br i1 %9, label %10, label %11

10:                                               ; preds = %5
  tail call void @error_and_exit(ptr noundef nonnull @.str.3) #5
  %.pre = load ptr, ptr %6, align 8, !tbaa !11
  br label %11

11:                                               ; preds = %10, %5
  %12 = phi ptr [ %.pre, %10 ], [ %8, %5 ]
  %13 = getelementptr inbounds i8, ptr %12, i64 %3
  %14 = load i64, ptr %0, align 8, !tbaa !5
  %15 = sub i64 %14, %3
  tail call void @llvm.memset.p0.i64(ptr align 1 %13, i8 0, i64 %15, i1 false)
  br label %16

16:                                               ; preds = %11, %2
  ret void
}

; Function Attrs: mustprogress nounwind willreturn allockind("realloc") allocsize(1) memory(argmem: readwrite, inaccessiblemem: readwrite)
declare noalias noundef ptr @realloc(ptr allocptr nocapture noundef, i64 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

attributes #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 = { 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 #2 = { mustprogress nounwind willreturn allockind("realloc") allocsize(1) memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 nounwind willreturn memory(argmem: write) }
attributes #4 = { nounwind allocsize(1) }
attributes #5 = { 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, !7, i64 0}
!6 = !{!"buf_s", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 24}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass