; LLVM IR from kala13x/libxutils :: src/sys (xtime)

; 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 }
%struct.XTimeSpec = type { i64, i64 }

; 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: nounwind uwtable
define dso_local i32 @XTime_GetClock(ptr noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca %struct.timespec, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.XTimeSpec, ptr %6, i32 0, i32 0
  store i64 0, ptr %7, align 8, !tbaa !9
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.XTimeSpec, ptr %8, i32 0, i32 1
  store i64 0, ptr %9, align 8, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 16, ptr %4) #3
  %10 = call i32 @clock_gettime(i32 noundef 0, ptr noundef %4) #3
  %11 = icmp slt i32 %10, 0
  br i1 %11, label %12, label %13

12:                                               ; preds = %1
  store i32 -1, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %22

13:                                               ; preds = %1
  %14 = getelementptr inbounds %struct.timespec, ptr %4, i32 0, i32 1
  %15 = load i64, ptr %14, align 8, !tbaa !13
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.XTimeSpec, ptr %16, i32 0, i32 0
  store i64 %15, ptr %17, align 8, !tbaa !9
  %18 = getelementptr inbounds %struct.timespec, ptr %4, i32 0, i32 0
  %19 = load i64, ptr %18, align 8, !tbaa !15
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.XTimeSpec, ptr %20, i32 0, i32 1
  store i64 %19, ptr %21, align 8, !tbaa !12
  store i32 1, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %22

22:                                               ; preds = %13, %12
  call void @llvm.lifetime.end.p0(i64 16, ptr %4) #3
  %23 = load i32, ptr %2, align 4
  ret i32 %23
}

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

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 "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 }

!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, !11, i64 0}
!10 = !{!"XTimeSpec", !11, i64 0, !11, i64 8}
!11 = !{!"long", !7, i64 0}
!12 = !{!10, !11, i64 8}
!13 = !{!14, !11, i64 8}
!14 = !{!"timespec", !11, i64 0, !11, i64 8}
!15 = !{!14, !11, 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.timespec = type { i64, i64 }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 2) i32 @XTime_GetClock(ptr nocapture noundef writeonly %0) local_unnamed_addr #1 {
  %2 = alloca %struct.timespec, align 16
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %0, i8 0, i64 16, i1 false)
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %2) #4
  %3 = call i32 @clock_gettime(i32 noundef 0, ptr noundef nonnull %2) #4
  %4 = icmp slt i32 %3, 0
  br i1 %4, label %8, label %5

5:                                                ; preds = %1
  %6 = load <2 x i64>, ptr %2, align 16, !tbaa !5
  %7 = shufflevector <2 x i64> %6, <2 x i64> poison, <2 x i32> <i32 1, i32 0>
  store <2 x i64> %7, ptr %0, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %1, %5
  %.0 = phi i32 [ 1, %5 ], [ -1, %1 ]
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %2) #4
  ret i32 %.0
}

; Function Attrs: nounwind
declare i32 @clock_gettime(i32 noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,SimplifyCFGPass,TailCallElimPass