; 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
declare dso_local float @add_f32(float noundef, float noundef) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local float @atomic_add_f32(ptr noundef %0, float noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca float, align 4
  %5 = alloca float, align 4
  %6 = alloca float, align 4
  %7 = alloca i8, align 1
  store ptr %0, ptr %3, align 8, !tbaa !5
  store float %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  br label %8

8:                                                ; preds = %22, %2
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = load volatile float, ptr %9, align 4, !tbaa !9
  store float %10, ptr %5, align 4, !tbaa !9
  %11 = load float, ptr %5, align 4, !tbaa !9
  %12 = load float, ptr %4, align 4, !tbaa !9
  %13 = call float @add_f32(float noundef %11, float noundef %12)
  store float %13, ptr %6, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %8
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = load i32, ptr %5, align 4
  %17 = load i32, ptr %6, align 4
  %18 = cmpxchg weak volatile ptr %15, i32 %16, i32 %17 seq_cst seq_cst, align 4
  %19 = extractvalue { i32, i1 } %18, 0
  %20 = extractvalue { i32, i1 } %18, 1
  br i1 %20, label %22, label %21

21:                                               ; preds = %14
  store i32 %19, ptr %5, align 4
  br label %22

22:                                               ; preds = %21, %14
  %23 = zext i1 %20 to i8
  store i8 %23, ptr %7, align 1, !tbaa !11
  %24 = load i8, ptr %7, align 1, !tbaa !11, !range !13, !noundef !14
  %25 = trunc i8 %24 to i1
  %26 = xor i1 %25, true
  br i1 %26, label %8, label %27, !llvm.loop !15

27:                                               ; preds = %22
  %28 = load float, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret float %28
}

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 = !{!"float", !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 nounwind uwtable
declare dso_local float @add_f32(float noundef, float noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef float @atomic_add_f32(ptr noundef %0, float noundef %1) local_unnamed_addr #0 {
  br label %3

3:                                                ; preds = %3, %2
  %4 = load volatile float, ptr %0, align 4, !tbaa !5
  %5 = tail call float @add_f32(float noundef %4, float noundef %1)
  %6 = bitcast float %4 to i32
  %7 = bitcast float %5 to i32
  %8 = cmpxchg weak volatile ptr %0, i32 %6, i32 %7 seq_cst seq_cst, align 4
  %9 = extractvalue { i32, i1 } %8, 1
  br i1 %9, label %10, label %3, !llvm.loop !9

10:                                               ; preds = %3
  ret float %4
}

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, !6, i64 0}
!6 = !{!"float", !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,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass