; LLVM IR from InsightSoftwareConsortium/ITK :: Modules/ThirdParty/MINC/src/libminc/nifti (nifti1_io)

; 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.nifti_global_options = type { i32, i32, i32 }

@stderr = external global ptr, align 8
@g_opts = external hidden global %struct.nifti_global_options, align 4
@.str.252 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.253 = external hidden unnamed_addr constant [27 x i8], align 1
@.str.254 = external hidden unnamed_addr constant [28 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

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

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #1

; Function Attrs: nounwind
declare void @free(ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local ptr @nifti_image_write_hdr_img(ptr noundef, i32 noundef, ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local void @nifti_image_write(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = call ptr @nifti_image_write_hdr_img(ptr noundef %4, i32 noundef 1, ptr noundef @.str.252)
  store ptr %5, ptr %3, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = icmp ne ptr %6, null
  br i1 %7, label %8, label %16

8:                                                ; preds = %1
  %9 = load i32, ptr @g_opts, align 4, !tbaa !9
  %10 = icmp sgt i32 %9, 2
  br i1 %10, label %11, label %14

11:                                               ; preds = %8
  %12 = load ptr, ptr @stderr, align 8, !tbaa !5
  %13 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %12, ptr noundef @.str.253) #3
  br label %14

14:                                               ; preds = %11, %8
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  call void @free(ptr noundef %15) #3
  br label %16

16:                                               ; preds = %14, %1
  %17 = load i32, ptr @g_opts, align 4, !tbaa !9
  %18 = icmp sgt i32 %17, 1
  br i1 %18, label %19, label %22

19:                                               ; preds = %16
  %20 = load ptr, ptr @stderr, align 8, !tbaa !5
  %21 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %20, ptr noundef @.str.254) #3
  br label %22

22:                                               ; preds = %19, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 }

!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, !11, i64 0}
!10 = !{!"", !11, i64 0, !11, i64 4, !11, i64 8}
!11 = !{!"int", !7, i64 0}


; 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"

%struct.nifti_global_options = type { i32, i32, i32 }

@stderr = external local_unnamed_addr global ptr, align 8
@g_opts = external hidden local_unnamed_addr global %struct.nifti_global_options, align 4
@.str.252 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.253 = external hidden unnamed_addr constant [27 x i8], align 1
@.str.254 = external hidden unnamed_addr constant [28 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local ptr @nifti_image_write_hdr_img(ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local void @nifti_image_write(ptr noundef %0) local_unnamed_addr #2 {
  %2 = tail call ptr @nifti_image_write_hdr_img(ptr noundef %0, i32 noundef 1, ptr noundef nonnull @.str.252)
  %.not = icmp eq ptr %2, null
  br i1 %.not, label %10, label %3

3:                                                ; preds = %1
  %4 = load i32, ptr @g_opts, align 4, !tbaa !5
  %5 = icmp sgt i32 %4, 2
  br i1 %5, label %6, label %9

6:                                                ; preds = %3
  %7 = load ptr, ptr @stderr, align 8, !tbaa !10
  %8 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %7, ptr noundef nonnull @.str.253) #3
  br label %9

9:                                                ; preds = %6, %3
  tail call void @free(ptr noundef nonnull %2) #4
  br label %10

10:                                               ; preds = %9, %1
  %11 = load i32, ptr @g_opts, align 4, !tbaa !5
  %12 = icmp sgt i32 %11, 1
  br i1 %12, label %13, label %16

13:                                               ; preds = %10
  %14 = load ptr, ptr @stderr, align 8, !tbaa !10
  %15 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %14, ptr noundef nonnull @.str.254) #3
  br label %16

16:                                               ; preds = %13, %10
  ret void
}

attributes #0 = { 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 #1 = { mustprogress nounwind willreturn allockind("free") 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 #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 = { cold nounwind }
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, !7, i64 0}
!6 = !{!"", !7, i64 0, !7, i64 4, !7, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!11, !11, i64 0}
!11 = !{!"any pointer", !8, i64 0}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,TailCallElimPass