; LLVM IR from oreparaz/dudect :: examples/simple (example)

; 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.dudect_config_t = type { i64, i64 }
%struct.dudect_ctx_t = type { ptr, ptr, ptr, ptr, ptr, [102 x ptr], ptr }

@__const.run_test.config = external hidden unnamed_addr constant %struct.dudect_config_t, align 8

; 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
declare dso_local i32 @dudect_main(ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @dudect_init(ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @dudect_free(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @run_test() #1 {
  %1 = alloca %struct.dudect_config_t, align 8
  %2 = alloca %struct.dudect_ctx_t, align 8
  %3 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 16, ptr %1) #3
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %1, ptr align 8 @__const.run_test.config, i64 16, i1 false)
  call void @llvm.lifetime.start.p0(i64 864, ptr %2) #3
  %4 = call i32 @dudect_init(ptr noundef %2, ptr noundef %1)
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 1, ptr %3, align 4, !tbaa !5
  br label %5

5:                                                ; preds = %8, %0
  %6 = load i32, ptr %3, align 4, !tbaa !5
  %7 = icmp eq i32 %6, 1
  br i1 %7, label %8, label %10

8:                                                ; preds = %5
  %9 = call i32 @dudect_main(ptr noundef %2)
  store i32 %9, ptr %3, align 4, !tbaa !5
  br label %5, !llvm.loop !9

10:                                               ; preds = %5
  %11 = call i32 @dudect_free(ptr noundef %2)
  %12 = load i32, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 864, ptr %2) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr %1) #3
  ret i32 %12
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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"}


; 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"

%struct.dudect_config_t = type { i64, i64 }
%struct.dudect_ctx_t = type { ptr, ptr, ptr, ptr, ptr, [102 x ptr], ptr }

@__const.run_test.config = external hidden unnamed_addr constant %struct.dudect_config_t, align 8

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @dudect_main(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @dudect_init(ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @dudect_free(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 2, 1) i32 @run_test() local_unnamed_addr #1 {
  %1 = alloca %struct.dudect_config_t, align 8
  %2 = alloca %struct.dudect_ctx_t, align 8
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %1) #3
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %1, ptr noundef nonnull align 8 dereferenceable(16) @__const.run_test.config, i64 16, i1 false)
  call void @llvm.lifetime.start.p0(i64 864, ptr nonnull %2) #3
  %3 = call i32 @dudect_init(ptr noundef nonnull %2, ptr noundef nonnull %1)
  br label %4

4:                                                ; preds = %0, %4
  %5 = call i32 @dudect_main(ptr noundef nonnull %2)
  %6 = icmp eq i32 %5, 1
  br i1 %6, label %4, label %7, !llvm.loop !5

7:                                                ; preds = %4
  %8 = call i32 @dudect_free(ptr noundef nonnull %2)
  call void @llvm.lifetime.end.p0(i64 864, ptr nonnull %2) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %1) #3
  ret i32 %5
}

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

attributes #0 = { mustprogress 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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopUnrollPass,SROAPass