; LLVM IR from HANDS-FREE/OpenRE :: 3_OS/STM32F1/GUI/STemWin/Demo (GUIDEMO)

; 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"

@_Halt = external hidden global i32, align 4
@_Next = external hidden global i32, align 4

; Function Attrs: nounwind uwtable
define dso_local i32 @GUIDEMO_CheckCancel() #0 {
  %1 = alloca i32, align 4
  br label %2

2:                                                ; preds = %5, %0
  %3 = load i32, ptr @_Halt, align 4, !tbaa !5
  %4 = icmp eq i32 %3, 1
  br i1 %4, label %5, label %6

5:                                                ; preds = %2
  call void @GUI_Delay(i32 noundef 10)
  br label %2, !llvm.loop !9

6:                                                ; preds = %2
  %7 = load i32, ptr @_Next, align 4, !tbaa !5
  %8 = icmp eq i32 %7, 1
  br i1 %8, label %9, label %10

9:                                                ; preds = %6
  store i32 0, ptr @_Next, align 4, !tbaa !5
  store i32 1, ptr %1, align 4
  br label %11

10:                                               ; preds = %6
  store i32 0, ptr %1, align 4
  br label %11

11:                                               ; preds = %10, %9
  %12 = load i32, ptr %1, align 4
  ret i32 %12
}

declare void @GUI_Delay(i32 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 = { "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; 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"

@_Halt = external hidden local_unnamed_addr global i32, align 4
@_Next = external hidden local_unnamed_addr global i32, align 4

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @GUIDEMO_CheckCancel() local_unnamed_addr #0 {
  %1 = load i32, ptr @_Halt, align 4, !tbaa !5
  %2 = icmp eq i32 %1, 1
  br i1 %2, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  tail call void @GUI_Delay(i32 noundef 10) #2
  %3 = load i32, ptr @_Halt, align 4, !tbaa !5
  %4 = icmp eq i32 %3, 1
  br i1 %4, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %0
  %5 = load i32, ptr @_Next, align 4, !tbaa !5
  %6 = icmp eq i32 %5, 1
  br i1 %6, label %7, label %8

7:                                                ; preds = %._crit_edge
  store i32 0, ptr @_Next, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %._crit_edge, %7
  %.0 = phi i32 [ 1, %7 ], [ 0, %._crit_edge ]
  ret i32 %.0
}

declare void @GUI_Delay(i32 noundef) local_unnamed_addr #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 = { "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass