; 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"

; 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
define dso_local i32 @atomic_add_partial_bits_b32(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #1 {
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i8, align 1
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  store i32 %3, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %13 = load i32, ptr %7, align 4, !tbaa !9
  %14 = sub i32 32, %13
  %15 = shl i32 -1, %14
  %16 = load i32, ptr %6, align 4, !tbaa !9
  %17 = sub i32 32, %16
  %18 = load i32, ptr %7, align 4, !tbaa !9
  %19 = sub i32 %17, %18
  %20 = lshr i32 %15, %19
  store i32 %20, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  store i32 0, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #2
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = load i32, ptr %21, align 4, !tbaa !9
  store i32 %22, ptr %11, align 4, !tbaa !9
  br label %23

23:                                               ; preds = %47, %4
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = load i32, ptr %24, align 4, !tbaa !9
  store i32 %25, ptr %11, align 4, !tbaa !9
  %26 = load i32, ptr %11, align 4, !tbaa !9
  %27 = load i32, ptr %8, align 4, !tbaa !9
  %28 = load i32, ptr %6, align 4, !tbaa !9
  %29 = shl i32 %27, %28
  %30 = add i32 %26, %29
  store i32 %30, ptr %10, align 4, !tbaa !9
  %31 = load i32, ptr %11, align 4, !tbaa !9
  %32 = load i32, ptr %9, align 4, !tbaa !9
  %33 = xor i32 %32, -1
  %34 = and i32 %31, %33
  %35 = load i32, ptr %10, align 4, !tbaa !9
  %36 = load i32, ptr %9, align 4, !tbaa !9
  %37 = and i32 %35, %36
  %38 = or i32 %34, %37
  store i32 %38, ptr %10, align 4, !tbaa !9
  br label %39

39:                                               ; preds = %23
  %40 = load ptr, ptr %5, align 8, !tbaa !5
  %41 = load i32, ptr %11, align 4
  %42 = load i32, ptr %10, align 4
  %43 = cmpxchg weak ptr %40, i32 %41, i32 %42 seq_cst seq_cst, align 4
  %44 = extractvalue { i32, i1 } %43, 0
  %45 = extractvalue { i32, i1 } %43, 1
  br i1 %45, label %47, label %46

46:                                               ; preds = %39
  store i32 %44, ptr %11, align 4
  br label %47

47:                                               ; preds = %46, %39
  %48 = zext i1 %45 to i8
  store i8 %48, ptr %12, align 1, !tbaa !11
  %49 = load i8, ptr %12, align 1, !tbaa !11, !range !13, !noundef !14
  %50 = trunc i8 %49 to i1
  %51 = xor i1 %50, true
  br i1 %51, label %23, label %52, !llvm.loop !15

52:                                               ; preds = %47
  %53 = load i32, ptr %11, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  ret i32 %53
}

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, !12, i64 0}
!12 = !{!"bool", !7, i64 0}
!13 = !{i8 0, i8 2}
!14 = !{}
!15 = distinct !{!15, !16}
!16 = !{!"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"

; Function Attrs: mustprogress nofree norecurse nounwind memory(argmem: readwrite) uwtable
define dso_local i32 @atomic_add_partial_bits_b32(ptr nocapture noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %5 = sub i32 32, %2
  %6 = shl nsw i32 -1, %5
  %7 = add i32 %1, %2
  %8 = sub i32 32, %7
  %9 = lshr i32 %6, %8
  %10 = shl i32 %3, %1
  %11 = xor i32 %9, -1
  br label %12

12:                                               ; preds = %12, %4
  %13 = load i32, ptr %0, align 4, !tbaa !5
  %14 = add i32 %13, %10
  %15 = and i32 %13, %11
  %16 = and i32 %14, %9
  %17 = or disjoint i32 %16, %15
  %18 = cmpxchg weak ptr %0, i32 %13, i32 %17 seq_cst seq_cst, align 4
  %19 = extractvalue { i32, i1 } %18, 1
  br i1 %19, label %20, label %12, !llvm.loop !9

20:                                               ; preds = %12
  ret i32 %13
}

attributes #0 = { mustprogress nofree norecurse nounwind 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" }

!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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass