; LLVM IR from ctlst-tech/catpilot :: os/freertos/osa/FreeRTOS-Plus-POSIX/source (FreeRTOS_POSIX_pthread)

; 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.pthread_attr_internal = type { i16, i16 }

; 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 uwtable
define dso_local i32 @pthread_attr_setdetachstate(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  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
  store i32 0, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %7, ptr %6, align 8, !tbaa !5
  %8 = load i32, ptr %4, align 4, !tbaa !9
  %9 = icmp ne i32 %8, 0
  br i1 %9, label %10, label %14

10:                                               ; preds = %2
  %11 = load i32, ptr %4, align 4, !tbaa !9
  %12 = icmp ne i32 %11, 1
  br i1 %12, label %13, label %14

13:                                               ; preds = %10
  store i32 22, ptr %5, align 4, !tbaa !9
  br label %31

14:                                               ; preds = %10, %2
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.pthread_attr_internal, ptr %15, i32 0, i32 1
  %17 = load i16, ptr %16, align 2, !tbaa !11
  %18 = zext i16 %17 to i32
  %19 = and i32 %18, -32769
  %20 = trunc i32 %19 to i16
  store i16 %20, ptr %16, align 2, !tbaa !11
  %21 = load i32, ptr %4, align 4, !tbaa !9
  %22 = trunc i32 %21 to i16
  %23 = zext i16 %22 to i32
  %24 = shl i32 %23, 15
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.pthread_attr_internal, ptr %25, i32 0, i32 1
  %27 = load i16, ptr %26, align 2, !tbaa !11
  %28 = zext i16 %27 to i32
  %29 = or i32 %28, %24
  %30 = trunc i32 %29 to i16
  store i16 %30, ptr %26, align 2, !tbaa !11
  br label %31

31:                                               ; preds = %14, %13
  %32 = load i32, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 %32
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !13, i64 2}
!12 = !{!"pthread_attr_internal", !13, i64 0, !13, i64 2}
!13 = !{!"short", !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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local range(i32 0, 23) i32 @pthread_attr_setdetachstate(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %or.cond = icmp ugt i32 %1, 1
  br i1 %or.cond, label %9, label %3

3:                                                ; preds = %2
  %4 = getelementptr inbounds i8, ptr %0, i64 2
  %5 = load i16, ptr %4, align 2, !tbaa !5
  %6 = and i16 %5, 32767
  %.tr = trunc nuw i32 %1 to i16
  %7 = shl nuw i16 %.tr, 15
  %8 = or disjoint i16 %6, %7
  store i16 %8, ptr %4, align 2, !tbaa !5
  br label %9

9:                                                ; preds = %2, %3
  %.0 = phi i32 [ 0, %3 ], [ 22, %2 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn 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, !7, i64 2}
!6 = !{!"pthread_attr_internal", !7, i64 0, !7, i64 2}
!7 = !{!"short", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}


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