; LLVM IR from goldsborough/ipc-bench :: source/other (pthread-test)

; 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"

%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }
%union.pthread_cond_t = type { %struct.__pthread_cond_s }
%struct.__pthread_cond_s = type { %union.__atomic_wide_counter, %union.__atomic_wide_counter, [2 x i32], [2 x i32], i32, i32, [2 x i32] }
%union.__atomic_wide_counter = type { i64 }
%struct.Task = type { i32, i32 }

@mutex = external dso_local global %union.pthread_mutex_t, align 8
@condition_variable = external dso_local global %union.pthread_cond_t, align 8
@sum = external dso_local global i32, align 4
@array = external dso_local global [10 x i32], align 16
@i = external dso_local global i32, align 4
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [7 x i8], align 1

; Function Attrs: nounwind
declare i32 @pthread_mutex_lock(ptr noundef) #0

; Function Attrs: nounwind
declare i32 @pthread_mutex_unlock(ptr noundef) #0

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: noreturn
declare void @pthread_exit(ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local void @second_interleaved_half(ptr noundef %0) #3 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = call i32 @pthread_mutex_lock(ptr noundef @mutex) #4
  %4 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  %5 = call i32 @pthread_cond_wait(ptr noundef @condition_variable, ptr noundef @mutex)
  br label %6

6:                                                ; preds = %21, %1
  %7 = load i32, ptr @i, align 4, !tbaa !9
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.Task, ptr %8, i32 0, i32 1
  %10 = load i32, ptr %9, align 4, !tbaa !11
  %11 = icmp slt i32 %7, %10
  br i1 %11, label %12, label %24

12:                                               ; preds = %6
  %13 = load i32, ptr @i, align 4, !tbaa !9
  %14 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %13)
  %15 = load i32, ptr @i, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [10 x i32], ptr @array, i64 0, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !9
  %19 = load i32, ptr @sum, align 4, !tbaa !9
  %20 = add nsw i32 %19, %18
  store i32 %20, ptr @sum, align 4, !tbaa !9
  br label %21

21:                                               ; preds = %12
  %22 = load i32, ptr @i, align 4, !tbaa !9
  %23 = add nsw i32 %22, 1
  store i32 %23, ptr @i, align 4, !tbaa !9
  br label %6, !llvm.loop !13

24:                                               ; preds = %6
  %25 = call i32 @pthread_mutex_unlock(ptr noundef @mutex) #4
  call void @pthread_exit(ptr noundef null) #5
  unreachable
}

declare i32 @pthread_cond_wait(ptr noundef, ptr noundef) #1

attributes #0 = { nounwind "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 = { "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 = { noreturn "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 #3 = { 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 #4 = { nounwind }
attributes #5 = { noreturn }

!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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 4}
!12 = !{!"Task", !10, i64 0, !10, i64 4}
!13 = distinct !{!13, !14}
!14 = !{!"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"

%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }
%union.pthread_cond_t = type { %struct.__pthread_cond_s }
%struct.__pthread_cond_s = type { %union.__atomic_wide_counter, %union.__atomic_wide_counter, [2 x i32], [2 x i32], i32, i32, [2 x i32] }
%union.__atomic_wide_counter = type { i64 }

@mutex = external dso_local global %union.pthread_mutex_t, align 8
@condition_variable = external dso_local global %union.pthread_cond_t, align 8
@sum = external dso_local local_unnamed_addr global i32, align 4
@array = external dso_local local_unnamed_addr global [10 x i32], align 16
@i = external dso_local local_unnamed_addr global i32, align 4
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [7 x i8], align 1

; Function Attrs: nounwind
declare i32 @pthread_mutex_lock(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind
declare i32 @pthread_mutex_unlock(ptr noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: noreturn
declare void @pthread_exit(ptr noundef) local_unnamed_addr #2

; Function Attrs: noreturn nounwind uwtable
define dso_local void @second_interleaved_half(ptr nocapture noundef readonly %0) local_unnamed_addr #3 {
  %2 = tail call i32 @pthread_mutex_lock(ptr noundef nonnull @mutex) #5
  %3 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %4 = tail call i32 @pthread_cond_wait(ptr noundef nonnull @condition_variable, ptr noundef nonnull @mutex) #5
  %5 = getelementptr inbounds i8, ptr %0, i64 4
  %6 = load i32, ptr @i, align 4, !tbaa !5
  %7 = load i32, ptr %5, align 4, !tbaa !9
  %8 = icmp slt i32 %6, %7
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %.lr.ph
  %9 = phi i32 [ %17, %.lr.ph ], [ %6, %1 ]
  %10 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %9)
  %11 = load i32, ptr @i, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [10 x i32], ptr @array, i64 0, i64 %12
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = load i32, ptr @sum, align 4, !tbaa !5
  %16 = add nsw i32 %15, %14
  store i32 %16, ptr @sum, align 4, !tbaa !5
  %17 = add nsw i32 %11, 1
  store i32 %17, ptr @i, align 4, !tbaa !5
  %18 = load i32, ptr %5, align 4, !tbaa !9
  %19 = icmp slt i32 %17, %18
  br i1 %19, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph, %1
  %20 = tail call i32 @pthread_mutex_unlock(ptr noundef nonnull @mutex) #5
  tail call void @pthread_exit(ptr noundef null) #6
  unreachable
}

declare i32 @pthread_cond_wait(ptr noundef, ptr noundef) local_unnamed_addr #4

attributes #0 = { nounwind "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 = { nofree nounwind "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 = { noreturn "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 #3 = { noreturn 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 #4 = { "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 #5 = { nounwind }
attributes #6 = { noreturn 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, !6, i64 4}
!10 = !{!"Task", !6, i64 0, !6, i64 4}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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