; LLVM IR from qc-tum/chemtensor :: src/util (pcg_basic)

; 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: nounwind uwtable
declare dso_local i32 @pcg32_random_r(ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @pcg32_boundedrand_r(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %9 = load i32, ptr %4, align 4, !tbaa !5
  %10 = sub i32 0, %9
  %11 = load i32, ptr %4, align 4, !tbaa !5
  %12 = urem i32 %10, %11
  store i32 %12, ptr %6, align 4, !tbaa !5
  br label %13

13:                                               ; preds = %26, %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %14 = load ptr, ptr %5, align 8, !tbaa !9
  %15 = call i32 @pcg32_random_r(ptr noundef %14)
  store i32 %15, ptr %7, align 4, !tbaa !5
  %16 = load i32, ptr %7, align 4, !tbaa !5
  %17 = load i32, ptr %6, align 4, !tbaa !5
  %18 = icmp uge i32 %16, %17
  br i1 %18, label %19, label %23

19:                                               ; preds = %13
  %20 = load i32, ptr %7, align 4, !tbaa !5
  %21 = load i32, ptr %4, align 4, !tbaa !5
  %22 = urem i32 %20, %21
  store i32 %22, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %24

23:                                               ; preds = %13
  store i32 0, ptr %8, align 4
  br label %24

24:                                               ; preds = %23, %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  %25 = load i32, ptr %8, align 4
  switch i32 %25, label %27 [
    i32 0, label %26
  ]

26:                                               ; preds = %24
  br label %13

27:                                               ; preds = %24
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %28 = load i32, ptr %3, align 4
  ret i32 %28
}

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}


; 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 @pcg32_random_r(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i32 @pcg32_boundedrand_r(i32 noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = sub i32 0, %0
  %4 = urem i32 %3, %0
  br label %5

5:                                                ; preds = %5, %2
  %6 = tail call i32 @pcg32_random_r(ptr noundef %1)
  %.not = icmp ult i32 %6, %4
  br i1 %.not, label %5, label %7

7:                                                ; preds = %5
  %8 = urem i32 %6, %0
  ret i32 %8
}

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: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass