; LLVM IR from carlk3/no-OS-FatFS-SD-SDIO-SPI-RPi-Pico :: src/src (ff_stdio)

; 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: nounwind uwtable
declare dso_local i32 @fresult2errno(i32 noundef) #0

; Function Attrs: nounwind uwtable
define dso_local ptr @ff_fopen(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #6
  %9 = call noalias ptr @malloc(i64 noundef 616) #7
  store ptr %9, ptr %6, align 8, !tbaa !5
  %10 = load ptr, ptr %6, align 8, !tbaa !5
  %11 = icmp ne ptr %10, null
  br i1 %11, label %14, label %12

12:                                               ; preds = %2
  %13 = call ptr @__errno_location() #8
  store i32 12, ptr %13, align 4, !tbaa !9
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %29

14:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #6
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = call zeroext i8 @posix2mode(ptr noundef %17)
  %19 = call i32 @f_open(ptr noundef %15, ptr noundef %16, i8 noundef zeroext %18)
  store i32 %19, ptr %8, align 4, !tbaa !9
  %20 = load i32, ptr %8, align 4, !tbaa !9
  %21 = call i32 @fresult2errno(i32 noundef %20)
  %22 = call ptr @__errno_location() #8
  store i32 %21, ptr %22, align 4, !tbaa !9
  %23 = load i32, ptr %8, align 4, !tbaa !9
  %24 = icmp ne i32 0, %23
  br i1 %24, label %25, label %27

25:                                               ; preds = %14
  %26 = load ptr, ptr %6, align 8, !tbaa !5
  call void @free(ptr noundef %26) #6
  store ptr null, ptr %6, align 8, !tbaa !5
  br label %27

27:                                               ; preds = %25, %14
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %28, ptr %3, align 8
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #6
  br label %29

29:                                               ; preds = %27, %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  %30 = load ptr, ptr %3, align 8
  ret ptr %30
}

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

; Function Attrs: nounwind willreturn memory(none)
declare ptr @__errno_location() #3

declare i32 @f_open(ptr noundef, ptr noundef, i8 noundef zeroext) #4

; Function Attrs: nounwind uwtable
declare hidden zeroext i8 @posix2mode(ptr noundef) #0

; Function Attrs: nounwind
declare void @free(ptr noundef) #5

; 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 = { nounwind allocsize(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 willreturn memory(none) "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 = { "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 #5 = { 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 #6 = { nounwind }
attributes #7 = { nounwind allocsize(0) }
attributes #8 = { nounwind 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 = !{!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 = !{!"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"

; Function Attrs: nounwind uwtable
declare dso_local i32 @fresult2errno(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef ptr @ff_fopen(ptr noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = tail call noalias dereferenceable_or_null(616) ptr @malloc(i64 noundef 616) #5
  %.not = icmp eq ptr %3, null
  br i1 %.not, label %4, label %6

4:                                                ; preds = %2
  %5 = tail call ptr @__errno_location() #6
  store i32 12, ptr %5, align 4, !tbaa !5
  br label %12

6:                                                ; preds = %2
  %7 = tail call zeroext i8 @posix2mode(ptr noundef %1)
  %8 = tail call i32 @f_open(ptr noundef nonnull %3, ptr noundef %0, i8 noundef zeroext %7) #7
  %9 = tail call i32 @fresult2errno(i32 noundef %8)
  %10 = tail call ptr @__errno_location() #6
  store i32 %9, ptr %10, align 4, !tbaa !5
  %.not10 = icmp eq i32 %8, 0
  br i1 %.not10, label %12, label %11

11:                                               ; preds = %6
  tail call void @free(ptr noundef nonnull %3) #7
  br label %12

12:                                               ; preds = %6, %11, %4
  %.0 = phi ptr [ null, %4 ], [ null, %11 ], [ %3, %6 ]
  ret ptr %.0
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
declare ptr @__errno_location() local_unnamed_addr #2

declare i32 @f_open(ptr noundef, ptr noundef, i8 noundef zeroext) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
declare hidden zeroext i8 @posix2mode(ptr noundef) 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 #4

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 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(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 = { mustprogress nofree nosync nounwind willreturn memory(none) "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 = { "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 = { 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 #5 = { nounwind allocsize(0) }
attributes #6 = { nounwind willreturn memory(none) }
attributes #7 = { 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"}


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