; LLVM IR from lichen-community-systems/signaletic :: hosts/daisy/vendor/libDaisy/Drivers/STM32H7xx_HAL_Driver/Src (IT)

; 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.RNG_HandleTypeDef = type { ptr, %struct.RNG_InitTypeDef, i32, i32, i32, i32 }
%struct.RNG_InitTypeDef = type { i32 }
%struct.RNG_TypeDef = type { i32, i32, i32 }

; 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 @HAL_RNG_GenerateRandomNumber_IT(ptr noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %1
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.RNG_HandleTypeDef, ptr %7, i32 0, i32 2
  %9 = load i32, ptr %8, align 4, !tbaa !11
  %10 = icmp eq i32 %9, 1
  br i1 %10, label %11, label %12

11:                                               ; preds = %6
  store i32 2, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %41

12:                                               ; preds = %6
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.RNG_HandleTypeDef, ptr %13, i32 0, i32 2
  store i32 1, ptr %14, align 4, !tbaa !11
  br label %15

15:                                               ; preds = %12
  br label %16

16:                                               ; preds = %15
  br label %17

17:                                               ; preds = %16
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.RNG_HandleTypeDef, ptr %18, i32 0, i32 3
  %20 = load volatile i32, ptr %19, align 8, !tbaa !14
  %21 = icmp eq i32 %20, 1
  br i1 %21, label %22, label %33

22:                                               ; preds = %17
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.RNG_HandleTypeDef, ptr %23, i32 0, i32 3
  store volatile i32 2, ptr %24, align 8, !tbaa !14
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.RNG_HandleTypeDef, ptr %25, i32 0, i32 0
  %27 = load ptr, ptr %26, align 8, !tbaa !15
  %28 = getelementptr inbounds %struct.RNG_TypeDef, ptr %27, i32 0, i32 0
  %29 = load volatile i32, ptr %28, align 4, !tbaa !16
  %30 = zext i32 %29 to i64
  %31 = or i64 %30, 8
  %32 = trunc i64 %31 to i32
  store volatile i32 %32, ptr %28, align 4, !tbaa !16
  br label %39

33:                                               ; preds = %17
  br label %34

34:                                               ; preds = %33
  %35 = load ptr, ptr %3, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.RNG_HandleTypeDef, ptr %35, i32 0, i32 2
  store i32 0, ptr %36, align 4, !tbaa !11
  br label %37

37:                                               ; preds = %34
  br label %38

38:                                               ; preds = %37
  store i32 1, ptr %4, align 4, !tbaa !9
  br label %39

39:                                               ; preds = %38, %22
  %40 = load i32, ptr %4, align 4, !tbaa !9
  store i32 %40, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %41

41:                                               ; preds = %39, %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  %42 = load i32, ptr %2, align 4
  ret i32 %42
}

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, !10, i64 12}
!12 = !{!"", !6, i64 0, !13, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24}
!13 = !{!"", !10, i64 0}
!14 = !{!12, !10, i64 16}
!15 = !{!12, !6, i64 0}
!16 = !{!17, !10, i64 0}
!17 = !{!"", !10, i64 0, !10, i64 4, !10, i64 8}


; 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: nofree norecurse nounwind uwtable
define dso_local range(i32 0, 3) i32 @HAL_RNG_GenerateRandomNumber_IT(ptr noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 12
  %3 = load i32, ptr %2, align 4, !tbaa !5
  %4 = icmp eq i32 %3, 1
  br i1 %4, label %14, label %5

5:                                                ; preds = %1
  store i32 1, ptr %2, align 4, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 16
  %7 = load volatile i32, ptr %6, align 8, !tbaa !12
  %8 = icmp eq i32 %7, 1
  br i1 %8, label %9, label %13

9:                                                ; preds = %5
  store volatile i32 2, ptr %6, align 8, !tbaa !12
  %10 = load ptr, ptr %0, align 8, !tbaa !13
  %11 = load volatile i32, ptr %10, align 4, !tbaa !14
  %12 = or i32 %11, 8
  store volatile i32 %12, ptr %10, align 4, !tbaa !14
  br label %14

13:                                               ; preds = %5
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %14

14:                                               ; preds = %9, %13, %1
  %.07 = phi i32 [ 2, %1 ], [ 0, %9 ], [ 1, %13 ]
  ret i32 %.07
}

attributes #0 = { nofree norecurse 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, !11, i64 12}
!6 = !{!"", !7, i64 0, !10, i64 8, !11, i64 12, !11, i64 16, !11, i64 20, !11, i64 24}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"", !11, i64 0}
!11 = !{!"int", !8, i64 0}
!12 = !{!6, !11, i64 16}
!13 = !{!6, !7, i64 0}
!14 = !{!15, !11, i64 0}
!15 = !{!"", !11, i64 0, !11, i64 4, !11, i64 8}


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