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

; 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.buf_s = type { i64, i64, i64, ptr }

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @M_BufferRead(ptr noundef %0, ptr noundef %1, i64 noundef %2) #1 {
  %4 = alloca i1, align 1
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i64 %2, ptr %7, align 8, !tbaa !9
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.buf_s, ptr %8, i32 0, i32 2
  %10 = load i64, ptr %9, align 8, !tbaa !11
  %11 = load i64, ptr %7, align 8, !tbaa !9
  %12 = add i64 %10, %11
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.buf_s, ptr %13, i32 0, i32 1
  %15 = load i64, ptr %14, align 8, !tbaa !13
  %16 = icmp ugt i64 %12, %15
  br i1 %16, label %17, label %18

17:                                               ; preds = %3
  store i1 false, ptr %4, align 1
  br label %47

18:                                               ; preds = %3
  %19 = load i64, ptr %7, align 8, !tbaa !9
  %20 = icmp eq i64 %19, 1
  br i1 %20, label %21, label %31

21:                                               ; preds = %18
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.buf_s, ptr %22, i32 0, i32 3
  %24 = load ptr, ptr %23, align 8, !tbaa !14
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.buf_s, ptr %25, i32 0, i32 2
  %27 = load i64, ptr %26, align 8, !tbaa !11
  %28 = getelementptr inbounds i8, ptr %24, i64 %27
  %29 = load i8, ptr %28, align 1, !tbaa !15
  %30 = load ptr, ptr %6, align 8, !tbaa !5
  store i8 %29, ptr %30, align 1, !tbaa !15
  br label %41

31:                                               ; preds = %18
  %32 = load ptr, ptr %6, align 8, !tbaa !5
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.buf_s, ptr %33, i32 0, i32 3
  %35 = load ptr, ptr %34, align 8, !tbaa !14
  %36 = load ptr, ptr %5, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.buf_s, ptr %36, i32 0, i32 2
  %38 = load i64, ptr %37, align 8, !tbaa !11
  %39 = getelementptr inbounds i8, ptr %35, i64 %38
  %40 = load i64, ptr %7, align 8, !tbaa !9
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %32, ptr align 1 %39, i64 %40, i1 false)
  br label %41

41:                                               ; preds = %31, %21
  %42 = load i64, ptr %7, align 8, !tbaa !9
  %43 = load ptr, ptr %5, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.buf_s, ptr %43, i32 0, i32 2
  %45 = load i64, ptr %44, align 8, !tbaa !11
  %46 = add i64 %45, %42
  store i64 %46, ptr %44, align 8, !tbaa !11
  store i1 true, ptr %4, align 1
  br label %47

47:                                               ; preds = %41, %17
  %48 = load i1, ptr %4, align 1
  ret i1 %48
}

attributes #0 = { nocallback nofree 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" }

!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, !10, i64 16}
!12 = !{!"buf_s", !10, i64 0, !10, i64 8, !10, i64 16, !6, i64 24}
!13 = !{!12, !10, i64 8}
!14 = !{!12, !6, i64 24}
!15 = !{!7, !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 nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, inaccessiblemem: none) uwtable
define dso_local noundef zeroext i1 @M_BufferRead(ptr nocapture noundef %0, ptr nocapture noundef writeonly %1, i64 noundef %2) local_unnamed_addr #1 {
  %4 = getelementptr inbounds i8, ptr %0, i64 16
  %5 = load i64, ptr %4, align 8, !tbaa !5
  %6 = add i64 %5, %2
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load i64, ptr %7, align 8, !tbaa !11
  %9 = icmp ule i64 %6, %8
  br i1 %9, label %10, label %21

10:                                               ; preds = %3
  %11 = icmp eq i64 %2, 1
  %12 = getelementptr inbounds i8, ptr %0, i64 24
  %13 = load ptr, ptr %12, align 8, !tbaa !12
  %14 = getelementptr inbounds i8, ptr %13, i64 %5
  br i1 %11, label %15, label %17

15:                                               ; preds = %10
  %16 = load i8, ptr %14, align 1, !tbaa !13
  store i8 %16, ptr %1, align 1, !tbaa !13
  br label %18

17:                                               ; preds = %10
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 1 %1, ptr align 1 %14, i64 %2, i1 false)
  br label %18

18:                                               ; preds = %17, %15
  %19 = load i64, ptr %4, align 8, !tbaa !5
  %20 = add i64 %19, %2
  store i64 %20, ptr %4, align 8, !tbaa !5
  br label %21

21:                                               ; preds = %3, %18
  ret i1 %9
}

attributes #0 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, inaccessiblemem: none) 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 16}
!6 = !{!"buf_s", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 8}
!12 = !{!6, !10, i64 24}
!13 = !{!8, !8, i64 0}


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