; LLVM IR from golems/ach :: src (libach)

; 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.ach_cancel_attr = type { %union.anon.15 }
%union.anon.15 = type { [8 x i64] }

; Function Attrs: nounwind uwtable
define dso_local i32 @ach_cancel_attr_set_async_unsafe(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
  switch i32 %6, label %19 [
    i32 0, label %7
    i32 1, label %13
  ]

7:                                                ; preds = %2
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.ach_cancel_attr, ptr %8, i32 0, i32 0
  %10 = load i8, ptr %9, align 8
  %11 = and i8 %10, -2
  %12 = or i8 %11, 0
  store i8 %12, ptr %9, align 8
  store i32 0, ptr %3, align 4
  br label %20

13:                                               ; preds = %2
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.ach_cancel_attr, ptr %14, i32 0, i32 0
  %16 = load i8, ptr %15, align 8
  %17 = and i8 %16, -2
  %18 = or i8 %17, 1
  store i8 %18, ptr %15, align 8
  store i32 0, ptr %3, align 4
  br label %20

19:                                               ; preds = %2
  store i32 12, ptr %3, align 4
  br label %20

20:                                               ; preds = %19, %13, %7
  %21 = load i32, ptr %3, align 4
  ret i32 %21
}

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" }

!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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local range(i32 0, 13) i32 @ach_cancel_attr_set_async_unsafe(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  switch i32 %1, label %9 [
    i32 0, label %3
    i32 1, label %6
  ]

3:                                                ; preds = %2
  %4 = load i8, ptr %0, align 8
  %5 = and i8 %4, -2
  br label %.sink.split

6:                                                ; preds = %2
  %7 = load i8, ptr %0, align 8
  %8 = or i8 %7, 1
  br label %.sink.split

.sink.split:                                      ; preds = %3, %6
  %.sink = phi i8 [ %8, %6 ], [ %5, %3 ]
  store i8 %.sink, ptr %0, align 8
  br label %9

9:                                                ; preds = %.sink.split, %2
  %.0 = phi i32 [ 12, %2 ], [ 0, %.sink.split ]
  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)"}


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