; LLVM IR from LlimaV10/doom-nukem_v2 :: libft (ft_strequ)

; 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 i32 @ft_strequ(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %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 = icmp ne ptr %6, null
  br i1 %7, label %8, label %37

8:                                                ; preds = %2
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %37

11:                                               ; preds = %8
  br label %12

12:                                               ; preds = %35, %11
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = load i8, ptr %13, align 1, !tbaa !9
  %15 = sext i8 %14 to i32
  %16 = icmp ne i32 %15, 0
  br i1 %16, label %22, label %17

17:                                               ; preds = %12
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = load i8, ptr %18, align 1, !tbaa !9
  %20 = sext i8 %19 to i32
  %21 = icmp ne i32 %20, 0
  br label %22

22:                                               ; preds = %17, %12
  %23 = phi i1 [ true, %12 ], [ %21, %17 ]
  br i1 %23, label %24, label %36

24:                                               ; preds = %22
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds i8, ptr %25, i32 1
  store ptr %26, ptr %4, align 8, !tbaa !5
  %27 = load i8, ptr %25, align 1, !tbaa !9
  %28 = sext i8 %27 to i32
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = getelementptr inbounds i8, ptr %29, i32 1
  store ptr %30, ptr %5, align 8, !tbaa !5
  %31 = load i8, ptr %29, align 1, !tbaa !9
  %32 = sext i8 %31 to i32
  %33 = icmp ne i32 %28, %32
  br i1 %33, label %34, label %35

34:                                               ; preds = %24
  store i32 0, ptr %3, align 4
  br label %38

35:                                               ; preds = %24
  br label %12, !llvm.loop !10

36:                                               ; preds = %22
  store i32 1, ptr %3, align 4
  br label %38

37:                                               ; preds = %8, %2
  store i32 0, ptr %3, align 4
  br label %38

38:                                               ; preds = %37, %36, %34
  %39 = load i32, ptr %3, align 4
  ret i32 %39
}

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 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"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: nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local range(i32 0, 2) i32 @ft_strequ(ptr noundef readonly %0, ptr noundef readonly %1) local_unnamed_addr #0 {
  %3 = icmp ne ptr %0, null
  %4 = icmp ne ptr %1, null
  %or.cond = and i1 %3, %4
  br i1 %or.cond, label %.preheader, label %.loopexit

.preheader:                                       ; preds = %2, %.critedge
  %.07 = phi ptr [ %6, %.critedge ], [ %0, %2 ]
  %.0 = phi ptr [ %7, %.critedge ], [ %1, %2 ]
  %5 = load i8, ptr %.07, align 1, !tbaa !5
  %.not = icmp eq i8 %5, 0
  %.pre = load i8, ptr %.0, align 1, !tbaa !5
  %.not11 = icmp eq i8 %.pre, 0
  %or.cond13 = select i1 %.not, i1 %.not11, i1 false
  br i1 %or.cond13, label %.loopexit, label %.critedge

.critedge:                                        ; preds = %.preheader
  %6 = getelementptr inbounds i8, ptr %.07, i64 1
  %7 = getelementptr inbounds i8, ptr %.0, i64 1
  %.not12 = icmp eq i8 %5, %.pre
  br i1 %.not12, label %.preheader, label %.loopexit, !llvm.loop !8

.loopexit:                                        ; preds = %.critedge, %.preheader, %2
  %.08 = phi i32 [ 0, %2 ], [ 0, %.critedge ], [ 1, %.preheader ]
  ret i32 %.08
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, 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, !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InstCombinePass,JumpThreadingPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass