; LLVM IR from lfarcaro/ARINC653_ARMV7A_Z7000 :: ARINC653_ARMV7A_Z7000.sw/ARINC653_ARMV7A_Z7000_bsp/ps7_cortexa9_0/libsrc (SetPrescaler)

; 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.XScuTimer = type { %struct.XScuTimer_Config, i32, i32 }
%struct.XScuTimer_Config = type { i16, i32 }

@Xil_AssertStatus = external global i32, align 4
@.str = external hidden unnamed_addr constant [167 x i8], align 1

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

declare void @Xil_Assert(ptr noundef, i32 noundef) #1

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

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @Xil_In32(i64 noundef) #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @Xil_Out32(i64 noundef, i32 noundef) #2

; Function Attrs: nounwind uwtable
define dso_local void @XScuTimer_SetPrescaler(ptr noundef %0, i8 noundef zeroext %1) #3 {
  %3 = alloca ptr, align 8
  %4 = alloca i8, align 1
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i8 %1, ptr %4, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = icmp ne ptr %7, null
  br i1 %8, label %9, label %10

9:                                                ; preds = %2
  store i32 0, ptr @Xil_AssertStatus, align 4, !tbaa !10
  br label %11

10:                                               ; preds = %2
  call void @Xil_Assert(ptr noundef @.str, i32 noundef 226)
  store i32 1, ptr @Xil_AssertStatus, align 4, !tbaa !10
  store i32 1, ptr %6, align 4
  br label %40

11:                                               ; preds = %9
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.XScuTimer, ptr %12, i32 0, i32 1
  %14 = load i32, ptr %13, align 4, !tbaa !12
  %15 = icmp eq i32 %14, 286331153
  br i1 %15, label %16, label %17

16:                                               ; preds = %11
  store i32 0, ptr @Xil_AssertStatus, align 4, !tbaa !10
  br label %18

17:                                               ; preds = %11
  call void @Xil_Assert(ptr noundef @.str, i32 noundef 227)
  store i32 1, ptr @Xil_AssertStatus, align 4, !tbaa !10
  store i32 1, ptr %6, align 4
  br label %40

18:                                               ; preds = %16
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.XScuTimer, ptr %19, i32 0, i32 0
  %21 = getelementptr inbounds %struct.XScuTimer_Config, ptr %20, i32 0, i32 1
  %22 = load i32, ptr %21, align 4, !tbaa !16
  %23 = add i32 %22, 8
  %24 = zext i32 %23 to i64
  %25 = call i32 @Xil_In32(i64 noundef %24)
  store i32 %25, ptr %5, align 4, !tbaa !10
  %26 = load i32, ptr %5, align 4, !tbaa !10
  %27 = and i32 %26, -65281
  store i32 %27, ptr %5, align 4, !tbaa !10
  %28 = load i8, ptr %4, align 1, !tbaa !9
  %29 = zext i8 %28 to i32
  %30 = shl i32 %29, 8
  %31 = load i32, ptr %5, align 4, !tbaa !10
  %32 = or i32 %31, %30
  store i32 %32, ptr %5, align 4, !tbaa !10
  %33 = load ptr, ptr %3, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.XScuTimer, ptr %33, i32 0, i32 0
  %35 = getelementptr inbounds %struct.XScuTimer_Config, ptr %34, i32 0, i32 1
  %36 = load i32, ptr %35, align 4, !tbaa !16
  %37 = add i32 %36, 8
  %38 = zext i32 %37 to i64
  %39 = load i32, ptr %5, align 4, !tbaa !10
  call void @Xil_Out32(i64 noundef %38, i32 noundef %39)
  store i32 0, ptr %6, align 4
  br label %40

40:                                               ; preds = %18, %17, %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  %41 = load i32, ptr %6, align 4
  switch i32 %41, label %43 [
    i32 0, label %42
    i32 1, label %42
  ]

42:                                               ; preds = %40, %40
  ret void

43:                                               ; preds = %40
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { inlinehint 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 #3 = { 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 #4 = { 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 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"int", !7, i64 0}
!12 = !{!13, !11, i64 8}
!13 = !{!"", !14, i64 0, !11, i64 8, !11, i64 12}
!14 = !{!"", !15, i64 0, !11, i64 4}
!15 = !{!"short", !7, i64 0}
!16 = !{!13, !11, i64 4}


; 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"

@Xil_AssertStatus = external local_unnamed_addr global i32, align 4
@.str = external hidden unnamed_addr constant [167 x i8], align 1

declare void @Xil_Assert(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @Xil_In32(i64 noundef) local_unnamed_addr #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @Xil_Out32(i64 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @XScuTimer_SetPrescaler(ptr noundef readonly %0, i8 noundef zeroext %1) local_unnamed_addr #2 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %7, label %3

3:                                                ; preds = %2
  store i32 0, ptr @Xil_AssertStatus, align 4, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load i32, ptr %4, align 4, !tbaa !9
  %6 = icmp eq i32 %5, 286331153
  br i1 %6, label %8, label %21

7:                                                ; preds = %2
  tail call void @Xil_Assert(ptr noundef nonnull @.str, i32 noundef 226) #3
  store i32 1, ptr @Xil_AssertStatus, align 4, !tbaa !5
  br label %22

8:                                                ; preds = %3
  %9 = getelementptr inbounds i8, ptr %0, i64 4
  %10 = load i32, ptr %9, align 4, !tbaa !13
  %11 = add i32 %10, 8
  %12 = zext i32 %11 to i64
  %13 = tail call i32 @Xil_In32(i64 noundef %12)
  %14 = and i32 %13, -65281
  %15 = zext i8 %1 to i32
  %16 = shl nuw nsw i32 %15, 8
  %17 = or disjoint i32 %14, %16
  %18 = load i32, ptr %9, align 4, !tbaa !13
  %19 = add i32 %18, 8
  %20 = zext i32 %19 to i64
  tail call void @Xil_Out32(i64 noundef %20, i32 noundef %17)
  br label %22

21:                                               ; preds = %3
  tail call void @Xil_Assert(ptr noundef nonnull @.str, i32 noundef 227) #3
  store i32 1, ptr @Xil_AssertStatus, align 4, !tbaa !5
  br label %22

22:                                               ; preds = %8, %21, %7
  ret void
}

attributes #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 = { inlinehint 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 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 #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 = !{!10, !6, i64 8}
!10 = !{!"", !11, i64 0, !6, i64 8, !6, i64 12}
!11 = !{!"", !12, i64 0, !6, i64 4}
!12 = !{!"short", !7, i64 0}
!13 = !{!10, !6, i64 4}


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