; LLVM IR from ARM-software/ML-examples :: cmsis-pack-examples/device/alif-ensemble/src/retarget.ll (open)

; 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"

@__stdin_name = external dso_local constant [6 x i8], align 4
@__stdout_name = external dso_local constant [7 x i8], align 4
@__stderr_name = external dso_local constant [7 x i8], align 4

; Function Attrs: nounwind uwtable
define dso_local i32 @_open(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %6 = load i32, ptr %5, align 4, !tbaa !9
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = call i32 @strcmp(ptr noundef %7, ptr noundef @__stdin_name) #2
  %9 = icmp eq i32 %8, 0
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  store i32 0, ptr %3, align 4
  br label %22

11:                                               ; preds = %2
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = call i32 @strcmp(ptr noundef %12, ptr noundef @__stdout_name) #2
  %14 = icmp eq i32 %13, 0
  br i1 %14, label %15, label %16

15:                                               ; preds = %11
  store i32 1, ptr %3, align 4
  br label %22

16:                                               ; preds = %11
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = call i32 @strcmp(ptr noundef %17, ptr noundef @__stderr_name) #2
  %19 = icmp eq i32 %18, 0
  br i1 %19, label %20, label %21

20:                                               ; preds = %16
  store i32 2, ptr %3, align 4
  br label %22

21:                                               ; preds = %16
  store i32 -1, ptr %3, align 4
  br label %22

22:                                               ; preds = %21, %20, %15, %10
  %23 = load i32, ptr %3, align 4
  ret i32 %23
}

; Function Attrs: nounwind willreturn memory(read)
declare i32 @strcmp(ptr noundef, ptr noundef) #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 = { nounwind willreturn memory(read) "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 willreturn memory(read) }

!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"

@__stdin_name = external dso_local constant [6 x i8], align 4
@__stdout_name = external dso_local constant [7 x i8], align 4
@__stderr_name = external dso_local constant [7 x i8], align 4

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read) uwtable
define dso_local range(i32 -1, 3) i32 @_open(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %0, ptr noundef nonnull dereferenceable(1) @__stdin_name) #2
  %4 = icmp eq i32 %3, 0
  br i1 %4, label %11, label %5

5:                                                ; preds = %2
  %6 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %0, ptr noundef nonnull dereferenceable(1) @__stdout_name) #2
  %7 = icmp eq i32 %6, 0
  br i1 %7, label %11, label %8

8:                                                ; preds = %5
  %9 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %0, ptr noundef nonnull dereferenceable(1) @__stderr_name) #2
  %10 = icmp eq i32 %9, 0
  %. = select i1 %10, i32 2, i32 -1
  br label %11

11:                                               ; preds = %8, %5, %2
  %.0 = phi i32 [ 0, %2 ], [ 1, %5 ], [ %., %8 ]
  ret i32 %.0
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i32 @strcmp(ptr nocapture noundef, ptr nocapture noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nofree nounwind willreturn memory(argmem: read) 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 memory(argmem: read) "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 willreturn memory(read) }

!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)"}


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