; LLVM IR from kala13x/libxutils :: src/sys (xtime)

; 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"

; 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 @XTime_GetLeapYear(i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @XTime_GetMonthDays(i32 noundef %0, i32 noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = call i32 @XTime_GetLeapYear(i32 noundef %8)
  store i32 %9, ptr %6, align 4, !tbaa !5
  %10 = load i32, ptr %5, align 4, !tbaa !5
  %11 = icmp eq i32 %10, 2
  br i1 %11, label %12, label %17

12:                                               ; preds = %2
  %13 = load i32, ptr %6, align 4, !tbaa !5
  %14 = icmp ne i32 %13, 0
  %15 = zext i1 %14 to i64
  %16 = select i1 %14, i32 28, i32 29
  store i32 %16, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

17:                                               ; preds = %2
  %18 = load i32, ptr %5, align 4, !tbaa !5
  %19 = icmp eq i32 %18, 4
  br i1 %19, label %29, label %20

20:                                               ; preds = %17
  %21 = load i32, ptr %5, align 4, !tbaa !5
  %22 = icmp eq i32 %21, 6
  br i1 %22, label %29, label %23

23:                                               ; preds = %20
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = icmp eq i32 %24, 9
  br i1 %25, label %29, label %26

26:                                               ; preds = %23
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = icmp eq i32 %27, 11
  br i1 %28, label %29, label %30

29:                                               ; preds = %26, %23, %20, %17
  store i32 30, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

30:                                               ; preds = %26
  store i32 31, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

31:                                               ; preds = %30, %29, %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %32 = load i32, ptr %3, align 4
  ret i32 %32
}

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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; 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: nounwind uwtable
declare dso_local i32 @XTime_GetLeapYear(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 28, 32) i32 @XTime_GetMonthDays(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = tail call i32 @XTime_GetLeapYear(i32 noundef %0)
  switch i32 %1, label %6 [
    i32 2, label %4
    i32 11, label %7
    i32 9, label %7
    i32 6, label %7
    i32 4, label %7
  ]

4:                                                ; preds = %2
  %.not = icmp eq i32 %3, 0
  %5 = select i1 %.not, i32 29, i32 28
  br label %7

6:                                                ; preds = %2
  br label %7

7:                                                ; preds = %2, %2, %2, %2, %6, %4
  %.0 = phi i32 [ %5, %4 ], [ 31, %6 ], [ 30, %2 ], [ 30, %2 ], [ 30, %2 ], [ 30, %2 ]
  ret i32 %.0
}

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)"}


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