; LLVM IR from taichi-dev/taichi :: taichi/runtime/llvm/runtime_module (runtime)

; 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.LLVMRuntime = type { %struct.PreallocatedMemoryChunk, %struct.PreallocatedMemoryChunk, ptr, ptr, ptr, ptr, ptr, [512 x ptr], [512 x i64], ptr, ptr, [1024 x ptr], [1024 x ptr], [1024 x ptr], ptr, ptr, ptr, ptr, ptr, [2048 x i8], [32 x i64], i32, i64, ptr, i32, i32, i64 }
%struct.PreallocatedMemoryChunk = type { ptr, ptr, i64 }
%struct.RandState = type { i32, i32, 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: mustprogress nounwind uwtable
declare dso_local void @initialize_rand_state(ptr noundef, i32 noundef) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @runtime_initialize_rand_states_serial(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %23, %2
  %7 = load i32, ptr %5, align 4, !tbaa !9
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.LLVMRuntime, ptr %8, i32 0, i32 25
  %10 = load i32, ptr %9, align 4, !tbaa !11
  %11 = icmp slt i32 %7, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %26

13:                                               ; preds = %6
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.LLVMRuntime, ptr %14, i32 0, i32 15
  %16 = load ptr, ptr %15, align 8, !tbaa !15
  %17 = load i32, ptr %5, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds %struct.RandState, ptr %16, i64 %18
  %20 = load i32, ptr %4, align 4, !tbaa !9
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = add nsw i32 %20, %21
  call void @initialize_rand_state(ptr noundef %19, i32 noundef %22)
  br label %23

23:                                               ; preds = %13
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = add nsw i32 %24, 1
  store i32 %25, ptr %5, align 4, !tbaa !9
  br label %6, !llvm.loop !16

26:                                               ; preds = %12
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 35244}
!12 = !{!"_ZTS11LLVMRuntime", !13, i64 0, !13, i64 24, !6, i64 48, !6, i64 56, !6, i64 64, !6, i64 72, !6, i64 80, !7, i64 88, !7, i64 4184, !6, i64 8280, !6, i64 8288, !7, i64 8296, !7, i64 16488, !7, i64 24680, !6, i64 32872, !6, i64 32880, !6, i64 32888, !6, i64 32896, !6, i64 32904, !7, i64 32912, !7, i64 34960, !10, i64 35216, !14, i64 35224, !6, i64 35232, !10, i64 35240, !10, i64 35244, !14, i64 35248}
!13 = !{!"_ZTS23PreallocatedMemoryChunk", !6, i64 0, !6, i64 8, !14, i64 16}
!14 = !{!"long", !7, i64 0}
!15 = !{!12, !6, i64 32880}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}


; 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"

%struct.RandState = type { i32, i32, i32, i32, i32 }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @initialize_rand_state(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @runtime_initialize_rand_states_serial(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 35244
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = icmp sgt i32 %4, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2
  %6 = getelementptr inbounds i8, ptr %0, i64 32880
  br label %7

._crit_edge:                                      ; preds = %7, %2
  ret void

7:                                                ; preds = %.lr.ph, %7
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %7 ]
  %8 = load ptr, ptr %6, align 8, !tbaa !13
  %9 = getelementptr inbounds %struct.RandState, ptr %8, i64 %indvars.iv
  %10 = trunc i64 %indvars.iv to i32
  %11 = add i32 %10, %1
  tail call void @initialize_rand_state(ptr noundef %9, i32 noundef %11)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = icmp slt i64 %indvars.iv.next, %13
  br i1 %14, label %7, label %._crit_edge, !llvm.loop !14
}

attributes #0 = { mustprogress 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, !12, i64 35244}
!6 = !{!"_ZTS11LLVMRuntime", !7, i64 0, !7, i64 24, !8, i64 48, !8, i64 56, !8, i64 64, !8, i64 72, !8, i64 80, !9, i64 88, !9, i64 4184, !8, i64 8280, !8, i64 8288, !9, i64 8296, !9, i64 16488, !9, i64 24680, !8, i64 32872, !8, i64 32880, !8, i64 32888, !8, i64 32896, !8, i64 32904, !9, i64 32912, !9, i64 34960, !12, i64 35216, !11, i64 35224, !8, i64 35232, !12, i64 35240, !12, i64 35244, !11, i64 35248}
!7 = !{!"_ZTS23PreallocatedMemoryChunk", !8, i64 0, !8, i64 8, !11, i64 16}
!8 = !{!"any pointer", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C++ TBAA"}
!11 = !{!"long", !9, i64 0}
!12 = !{!"int", !9, i64 0}
!13 = !{!6, !8, i64 32880}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: BDCEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass