; LLVM IR from cvra/robot-software :: lib/parameter/parameter.ll (parameter_namespace_find_w_id_len)

; 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"

; Function Attrs: nounwind uwtable
define dso_local ptr @_parameter_namespace_find_w_id_len(ptr noundef %0, ptr noundef %1, i64 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %10, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !11
  br label %11

11:                                               ; preds = %21, %3
  %12 = load ptr, ptr %7, align 8, !tbaa !5
  %13 = icmp ne ptr %12, null
  br i1 %13, label %14, label %19

14:                                               ; preds = %11
  %15 = load i32, ptr %8, align 4, !tbaa !11
  %16 = zext i32 %15 to i64
  %17 = load i64, ptr %6, align 8, !tbaa !9
  %18 = icmp ult i64 %16, %17
  br label %19

19:                                               ; preds = %14, %11
  %20 = phi i1 [ false, %11 ], [ %18, %14 ]
  br i1 %20, label %21, label %44

21:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = load i32, ptr %8, align 4, !tbaa !11
  %24 = zext i32 %23 to i64
  %25 = getelementptr inbounds i8, ptr %22, i64 %24
  %26 = load i64, ptr %6, align 8, !tbaa !9
  %27 = load i32, ptr %8, align 4, !tbaa !11
  %28 = zext i32 %27 to i64
  %29 = sub i64 %26, %28
  %30 = trunc i64 %29 to i32
  %31 = call i32 @id_split(ptr noundef %25, i32 noundef %30)
  store i32 %31, ptr %9, align 4, !tbaa !11
  %32 = load ptr, ptr %7, align 8, !tbaa !5
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  %34 = load i32, ptr %8, align 4, !tbaa !11
  %35 = zext i32 %34 to i64
  %36 = getelementptr inbounds i8, ptr %33, i64 %35
  %37 = load i32, ptr %9, align 4, !tbaa !11
  %38 = sext i32 %37 to i64
  %39 = call ptr @get_subnamespace(ptr noundef %32, ptr noundef %36, i64 noundef %38)
  store ptr %39, ptr %7, align 8, !tbaa !5
  %40 = load i32, ptr %9, align 4, !tbaa !11
  %41 = add nsw i32 %40, 1
  %42 = load i32, ptr %8, align 4, !tbaa !11
  %43 = add i32 %42, %41
  store i32 %43, ptr %8, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  br label %11, !llvm.loop !13

44:                                               ; preds = %19
  %45 = load ptr, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  ret ptr %45
}

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

; Function Attrs: nounwind uwtable
declare hidden i32 @id_split(ptr noundef, i32 noundef) #0

; Function Attrs: nounwind uwtable
declare hidden ptr @get_subnamespace(ptr noundef, ptr noundef, i64 noundef) #0

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

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 }

!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 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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"

; Function Attrs: nounwind uwtable
define dso_local ptr @_parameter_namespace_find_w_id_len(ptr noundef %0, ptr noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %4 = icmp ne ptr %0, null
  %5 = icmp ne i64 %2, 0
  %6 = and i1 %4, %5
  br i1 %6, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %3
  %7 = trunc i64 %2 to i32
  br label %8

8:                                                ; preds = %.lr.ph, %8
  %9 = phi i64 [ 0, %.lr.ph ], [ %18, %8 ]
  %.018 = phi ptr [ %0, %.lr.ph ], [ %14, %8 ]
  %.01417 = phi i32 [ 0, %.lr.ph ], [ %16, %8 ]
  %10 = getelementptr inbounds i8, ptr %1, i64 %9
  %11 = sub i32 %7, %.01417
  %12 = tail call i32 @id_split(ptr noundef %10, i32 noundef %11)
  %13 = sext i32 %12 to i64
  %14 = tail call ptr @get_subnamespace(ptr noundef nonnull %.018, ptr noundef %10, i64 noundef %13)
  %15 = add i32 %.01417, 1
  %16 = add i32 %15, %12
  %17 = icmp ne ptr %14, null
  %18 = zext i32 %16 to i64
  %19 = icmp ult i64 %18, %2
  %20 = and i1 %17, %19
  br i1 %20, label %8, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %8, %3
  %.0.lcssa = phi ptr [ %0, %3 ], [ %14, %8 ]
  ret ptr %.0.lcssa
}

; Function Attrs: nounwind uwtable
declare hidden i32 @id_split(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare hidden ptr @get_subnamespace(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #0

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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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