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

; 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.ach_channel = type { %union.anon }
%union.anon = type { [16 x i64] }

@chan_control = external dso_local global %struct.ach_channel, align 8
@.str.1 = external hidden unnamed_addr constant [8 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local double @now() #0

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

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

declare i32 @ach_open(ptr noundef, ptr noundef, ptr noundef) #2

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

declare i32 @ach_put(ptr noundef, ptr noundef, i64 noundef) #2

declare i32 @usleep(i32 noundef) #2

; Function Attrs: nounwind uwtable
define dso_local void @controller() #0 {
  %1 = alloca i32, align 4
  %2 = alloca double, align 8
  %3 = alloca [1 x double], align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #5
  %4 = call i32 @ach_open(ptr noundef @chan_control, ptr noundef @.str.1, ptr noundef null)
  store i32 %4, ptr %1, align 4, !tbaa !5
  %5 = load i32, ptr %1, align 4, !tbaa !5
  %6 = icmp ne i32 0, %5
  br i1 %6, label %7, label %8

7:                                                ; preds = %0
  call void @abort() #6
  unreachable

8:                                                ; preds = %0
  br label %9

9:                                                ; preds = %10, %8
  br label %10

10:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #5
  %11 = call double @now()
  store double %11, ptr %2, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  %12 = load double, ptr %2, align 8, !tbaa !9
  %13 = call double @sin(double noundef %12) #5
  store double %13, ptr %3, align 8, !tbaa !9
  %14 = getelementptr inbounds [1 x double], ptr %3, i64 0, i64 0
  %15 = call i32 @ach_put(ptr noundef @chan_control, ptr noundef %14, i64 noundef 8)
  %16 = call i32 @usleep(i32 noundef 1000)
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #5
  br label %9
}

; Function Attrs: nounwind
declare double @sin(double 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 = { "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 = { 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 #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, !10, i64 0}
!10 = !{!"double", !7, i64 0}


; 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.ach_channel = type { %union.anon }
%union.anon = type { [16 x i64] }

@chan_control = external dso_local global %struct.ach_channel, align 8
@.str.1 = external hidden unnamed_addr constant [8 x i8], align 1

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

declare i32 @ach_open(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

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

declare i32 @ach_put(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #2

declare i32 @usleep(i32 noundef) local_unnamed_addr #2

; Function Attrs: noreturn nounwind uwtable
define dso_local void @controller() local_unnamed_addr #4 {
  %1 = alloca [1 x double], align 8
  %2 = tail call i32 @ach_open(ptr noundef nonnull @chan_control, ptr noundef nonnull @.str.1, ptr noundef null) #6
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %.preheader, label %3

3:                                                ; preds = %0
  tail call void @abort() #7
  unreachable

.preheader:                                       ; preds = %0, %.preheader
  %4 = call double @now()
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #6
  %5 = call double @sin(double noundef %4) #6
  store double %5, ptr %1, align 8, !tbaa !5
  %6 = call i32 @ach_put(ptr noundef nonnull @chan_control, ptr noundef nonnull %1, i64 noundef 8) #6
  %7 = call i32 @usleep(i32 noundef 1000) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #6
  br label %.preheader
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(write)
declare double @sin(double 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 = { "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 = { 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 #5 = { mustprogress nofree nounwind willreturn memory(write) "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 = { nounwind }
attributes #7 = { 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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


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