; LLVM IR from golems/ach :: src (ach-bench)

; 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.timespec = type { i64, i64 }

@FREQUENCY = external dso_local global double, align 8
@SECS = external dso_local global double, align 8
@stderr = external global ptr, align 8
@.str.7 = external hidden unnamed_addr constant [8 x i8], align 1
@fd = external dso_local global [2 x i32], align 4

; Function Attrs: nounwind uwtable
declare dso_local void @make_realtime(i32 noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare hidden { i64, i64 } @get_ticks() #0

; Function Attrs: noreturn nounwind
declare void @abort() #3

declare i32 @usleep(i32 noundef) #4

; Function Attrs: nounwind uwtable
define dso_local void @sender_pipe() #0 {
  %1 = alloca i64, align 8
  %2 = alloca %struct.timespec, align 8
  %3 = alloca i64, align 8
  %4 = load ptr, ptr @stderr, align 8, !tbaa !5
  %5 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %4, ptr noundef @.str.7) #5
  call void @make_realtime(i32 noundef 98)
  call void @llvm.lifetime.start.p0(i64 8, ptr %1) #5
  store i64 0, ptr %1, align 8, !tbaa !9
  br label %6

6:                                                ; preds = %29, %0
  %7 = load i64, ptr %1, align 8, !tbaa !9
  %8 = uitofp i64 %7 to double
  %9 = load double, ptr @SECS, align 8, !tbaa !11
  %10 = load double, ptr @FREQUENCY, align 8, !tbaa !11
  %11 = fmul double %9, %10
  %12 = fcmp olt double %8, %11
  br i1 %12, label %13, label %32

13:                                               ; preds = %6
  call void @llvm.lifetime.start.p0(i64 16, ptr %2) #5
  %14 = call { i64, i64 } @get_ticks()
  %15 = getelementptr inbounds { i64, i64 }, ptr %2, i32 0, i32 0
  %16 = extractvalue { i64, i64 } %14, 0
  store i64 %16, ptr %15, align 8
  %17 = getelementptr inbounds { i64, i64 }, ptr %2, i32 0, i32 1
  %18 = extractvalue { i64, i64 } %14, 1
  store i64 %18, ptr %17, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  %19 = load i32, ptr getelementptr inbounds ([2 x i32], ptr @fd, i64 0, i64 1), align 4, !tbaa !13
  %20 = call i64 @write(i32 noundef %19, ptr noundef %2, i64 noundef 16)
  store i64 %20, ptr %3, align 8, !tbaa !9
  %21 = load i64, ptr %3, align 8, !tbaa !9
  %22 = icmp ne i64 16, %21
  br i1 %22, label %23, label %24

23:                                               ; preds = %13
  call void @abort() #6
  unreachable

24:                                               ; preds = %13
  %25 = load double, ptr @FREQUENCY, align 8, !tbaa !11
  %26 = fdiv double 1.000000e+06, %25
  %27 = fptoui double %26 to i32
  %28 = call i32 @usleep(i32 noundef %27)
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr %2) #5
  br label %29

29:                                               ; preds = %24
  %30 = load i64, ptr %1, align 8, !tbaa !9
  %31 = add i64 %30, 1
  store i64 %31, ptr %1, align 8, !tbaa !9
  br label %6, !llvm.loop !15

32:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 8, ptr %1) #5
  ret void
}

declare i64 @write(i32 noundef, ptr noundef, i64 noundef) #4

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 "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 "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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = !{!14, !14, i64 0}
!14 = !{!"int", !7, i64 0}
!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"

%struct.timespec = type { i64, i64 }

@FREQUENCY = external dso_local local_unnamed_addr global double, align 8
@SECS = external dso_local local_unnamed_addr global double, align 8
@stderr = external local_unnamed_addr global ptr, align 8
@.str.7 = external hidden unnamed_addr constant [8 x i8], align 1
@fd = external dso_local local_unnamed_addr global [2 x i32], align 4

; Function Attrs: nounwind uwtable
declare dso_local void @make_realtime(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare hidden { i64, i64 } @get_ticks() local_unnamed_addr #0

; Function Attrs: noreturn nounwind
declare void @abort() local_unnamed_addr #3

declare i32 @usleep(i32 noundef) local_unnamed_addr #4

; Function Attrs: nounwind uwtable
define dso_local void @sender_pipe() local_unnamed_addr #0 {
  %1 = alloca %struct.timespec, align 8
  %2 = load ptr, ptr @stderr, align 8, !tbaa !5
  %3 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %2, ptr noundef nonnull @.str.7) #6
  tail call void @make_realtime(i32 noundef 98)
  %4 = load double, ptr @SECS, align 8, !tbaa !9
  %5 = load double, ptr @FREQUENCY, align 8, !tbaa !9
  %6 = fmul double %4, %5
  %7 = fcmp ogt double %6, 0.000000e+00
  br i1 %7, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0
  %8 = getelementptr inbounds i8, ptr %1, i64 8
  br label %9

9:                                                ; preds = %.lr.ph, %16
  %.03 = phi i64 [ 0, %.lr.ph ], [ %21, %16 ]
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %1) #7
  %10 = tail call { i64, i64 } @get_ticks()
  %11 = extractvalue { i64, i64 } %10, 0
  store i64 %11, ptr %1, align 8
  %12 = extractvalue { i64, i64 } %10, 1
  store i64 %12, ptr %8, align 8
  %13 = load i32, ptr getelementptr inbounds (i8, ptr @fd, i64 4), align 4, !tbaa !11
  %14 = call i64 @write(i32 noundef %13, ptr noundef nonnull %1, i64 noundef 16) #7
  %.not = icmp eq i64 %14, 16
  br i1 %.not, label %16, label %15

15:                                               ; preds = %9
  tail call void @abort() #8
  unreachable

16:                                               ; preds = %9
  %17 = load double, ptr @FREQUENCY, align 8, !tbaa !9
  %18 = fdiv double 1.000000e+06, %17
  %19 = fptoui double %18 to i32
  %20 = tail call i32 @usleep(i32 noundef %19) #7
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %1) #7
  %21 = add i64 %.03, 1
  %22 = uitofp i64 %21 to double
  %23 = load double, ptr @SECS, align 8, !tbaa !9
  %24 = load double, ptr @FREQUENCY, align 8, !tbaa !9
  %25 = fmul double %23, %24
  %26 = fcmp ogt double %25, %22
  br i1 %26, label %9, label %._crit_edge, !llvm.loop !13

._crit_edge:                                      ; preds = %16, %0
  ret void
}

; Function Attrs: nofree
declare noundef i64 @write(i32 noundef, ptr nocapture noundef readonly, i64 noundef) local_unnamed_addr #5

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { noreturn 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 #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 = { nofree "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 #6 = { cold nounwind }
attributes #7 = { nounwind }
attributes #8 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"double", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


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