; 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"

%struct.pcg32_random = type { i64, i64 }

; Function Attrs: nounwind uwtable
define dso_local i32 @pcg32_random_r(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.pcg32_random, ptr %6, i32 0, i32 0
  %8 = load i64, ptr %7, align 8, !tbaa !9
  store i64 %8, ptr %3, align 8, !tbaa !12
  %9 = load i64, ptr %3, align 8, !tbaa !12
  %10 = mul i64 %9, 6364136223846793005
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.pcg32_random, ptr %11, i32 0, i32 1
  %13 = load i64, ptr %12, align 8, !tbaa !13
  %14 = add i64 %10, %13
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.pcg32_random, ptr %15, i32 0, i32 0
  store i64 %14, ptr %16, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  %17 = load i64, ptr %3, align 8, !tbaa !12
  %18 = lshr i64 %17, 18
  %19 = load i64, ptr %3, align 8, !tbaa !12
  %20 = xor i64 %18, %19
  %21 = lshr i64 %20, 27
  %22 = trunc i64 %21 to i32
  store i32 %22, ptr %4, align 4, !tbaa !14
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %23 = load i64, ptr %3, align 8, !tbaa !12
  %24 = lshr i64 %23, 59
  %25 = trunc i64 %24 to i32
  store i32 %25, ptr %5, align 4, !tbaa !14
  %26 = load i32, ptr %4, align 4, !tbaa !14
  %27 = load i32, ptr %5, align 4, !tbaa !14
  %28 = lshr i32 %26, %27
  %29 = load i32, ptr %4, align 4, !tbaa !14
  %30 = load i32, ptr %5, align 4, !tbaa !14
  %31 = sub i32 0, %30
  %32 = and i32 %31, 31
  %33 = shl i32 %29, %32
  %34 = or i32 %28, %33
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret i32 %34
}

; 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

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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"pcg32_random", !11, i64 0, !11, i64 8}
!11 = !{!"long", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!10, !11, i64 8}
!14 = !{!15, !15, i64 0}
!15 = !{!"int", !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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local i32 @pcg32_random_r(ptr nocapture noundef %0) local_unnamed_addr #0 {
  %2 = load i64, ptr %0, align 8, !tbaa !5
  %3 = mul i64 %2, 6364136223846793005
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load i64, ptr %4, align 8, !tbaa !10
  %6 = add i64 %3, %5
  store i64 %6, ptr %0, align 8, !tbaa !5
  %7 = lshr i64 %2, 45
  %8 = lshr i64 %2, 27
  %9 = xor i64 %7, %8
  %10 = trunc i64 %9 to i32
  %11 = lshr i64 %2, 59
  %12 = trunc nuw nsw i64 %11 to i32
  %13 = tail call i32 @llvm.fshr.i32(i32 %10, i32 %10, i32 %12)
  ret i32 %13
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.fshr.i32(i32, i32, i32) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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 speculatable willreturn memory(none) }

!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, !7, i64 0}
!6 = !{!"pcg32_random", !7, i64 0, !7, i64 8}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 8}


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