; LLVM IR from cvra/robot-software :: lib/cmp (cmp)

; 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.cmp_object_s = type { i8, %union.cmp_object_data_u }
%union.cmp_object_data_u = type { i64 }

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @cmp_object_as_short(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.cmp_object_s, ptr %6, i32 0, i32 0
  %8 = load i8, ptr %7, align 8, !tbaa !9
  %9 = zext i8 %8 to i32
  switch i32 %9, label %39 [
    i32 0, label %10
    i32 34, label %10
    i32 18, label %10
    i32 14, label %16
    i32 19, label %22
    i32 15, label %27
  ]

10:                                               ; preds = %2, %2, %2
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.cmp_object_s, ptr %11, i32 0, i32 1
  %13 = load i8, ptr %12, align 8, !tbaa !11
  %14 = sext i8 %13 to i16
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  store i16 %14, ptr %15, align 2, !tbaa !12
  store i1 true, ptr %3, align 1
  br label %40

16:                                               ; preds = %2
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.cmp_object_s, ptr %17, i32 0, i32 1
  %19 = load i8, ptr %18, align 8, !tbaa !11
  %20 = zext i8 %19 to i16
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  store i16 %20, ptr %21, align 2, !tbaa !12
  store i1 true, ptr %3, align 1
  br label %40

22:                                               ; preds = %2
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.cmp_object_s, ptr %23, i32 0, i32 1
  %25 = load i16, ptr %24, align 8, !tbaa !11
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  store i16 %25, ptr %26, align 2, !tbaa !12
  store i1 true, ptr %3, align 1
  br label %40

27:                                               ; preds = %2
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.cmp_object_s, ptr %28, i32 0, i32 1
  %30 = load i16, ptr %29, align 8, !tbaa !11
  %31 = zext i16 %30 to i32
  %32 = icmp sle i32 %31, 32767
  br i1 %32, label %33, label %38

33:                                               ; preds = %27
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.cmp_object_s, ptr %34, i32 0, i32 1
  %36 = load i16, ptr %35, align 8, !tbaa !11
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  store i16 %36, ptr %37, align 2, !tbaa !12
  store i1 true, ptr %3, align 1
  br label %40

38:                                               ; preds = %27
  br label %39

39:                                               ; preds = %38, %2
  store i1 false, ptr %3, align 1
  br label %40

40:                                               ; preds = %39, %33, %22, %16, %10
  %41 = load i1, ptr %3, align 1
  ret i1 %41
}

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" }

!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, !7, i64 0}
!10 = !{!"cmp_object_s", !7, i64 0, !7, i64 8}
!11 = !{!7, !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"short", !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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local noundef zeroext i1 @cmp_object_as_short(ptr nocapture noundef readonly %0, ptr nocapture noundef writeonly %1) local_unnamed_addr #0 {
  %3 = load i8, ptr %0, align 8, !tbaa !5
  switch i8 %3, label %19 [
    i8 0, label %4
    i8 34, label %4
    i8 18, label %4
    i8 14, label %8
    i8 19, label %12
    i8 15, label %15
  ]

4:                                                ; preds = %2, %2, %2
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  %6 = load i8, ptr %5, align 8, !tbaa !9
  %7 = sext i8 %6 to i16
  br label %.sink.split

8:                                                ; preds = %2
  %9 = getelementptr inbounds i8, ptr %0, i64 8
  %10 = load i8, ptr %9, align 8, !tbaa !9
  %11 = zext i8 %10 to i16
  br label %.sink.split

12:                                               ; preds = %2
  %13 = getelementptr inbounds i8, ptr %0, i64 8
  %14 = load i16, ptr %13, align 8, !tbaa !9
  br label %.sink.split

15:                                               ; preds = %2
  %16 = getelementptr inbounds i8, ptr %0, i64 8
  %17 = load i16, ptr %16, align 8, !tbaa !9
  %18 = icmp sgt i16 %17, -1
  br i1 %18, label %.sink.split, label %19

.sink.split:                                      ; preds = %15, %4, %8, %12
  %.sink = phi i16 [ %14, %12 ], [ %11, %8 ], [ %7, %4 ], [ %17, %15 ]
  store i16 %.sink, ptr %1, align 2, !tbaa !10
  br label %19

19:                                               ; preds = %.sink.split, %2, %15
  %.0 = phi i1 [ false, %15 ], [ false, %2 ], [ true, %.sink.split ]
  ret i1 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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, !7, i64 0}
!6 = !{!"cmp_object_s", !7, i64 0, !7, i64 8}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"short", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass