; LLVM IR from facebookresearch/habitat-sim :: src/deps/basis-universal/encoder/lodepng.ll (Z25lodepng_chunk_type_equalsPKhPKc)

; 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: mustprogress nounwind uwtable
define dso_local noundef zeroext i8 @_Z25lodepng_chunk_type_equalsPKhPKc(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca i8, 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 %5, align 8, !tbaa !5
  %7 = call i64 @strlen(ptr noundef %6) #2
  %8 = icmp ne i64 %7, 4
  br i1 %8, label %9, label %10

9:                                                ; preds = %2
  store i8 0, ptr %3, align 1
  br label %53

10:                                               ; preds = %2
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds i8, ptr %11, i64 4
  %13 = load i8, ptr %12, align 1, !tbaa !9
  %14 = zext i8 %13 to i32
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = getelementptr inbounds i8, ptr %15, i64 0
  %17 = load i8, ptr %16, align 1, !tbaa !9
  %18 = sext i8 %17 to i32
  %19 = icmp eq i32 %14, %18
  br i1 %19, label %20, label %50

20:                                               ; preds = %10
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds i8, ptr %21, i64 5
  %23 = load i8, ptr %22, align 1, !tbaa !9
  %24 = zext i8 %23 to i32
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = getelementptr inbounds i8, ptr %25, i64 1
  %27 = load i8, ptr %26, align 1, !tbaa !9
  %28 = sext i8 %27 to i32
  %29 = icmp eq i32 %24, %28
  br i1 %29, label %30, label %50

30:                                               ; preds = %20
  %31 = load ptr, ptr %4, align 8, !tbaa !5
  %32 = getelementptr inbounds i8, ptr %31, i64 6
  %33 = load i8, ptr %32, align 1, !tbaa !9
  %34 = zext i8 %33 to i32
  %35 = load ptr, ptr %5, align 8, !tbaa !5
  %36 = getelementptr inbounds i8, ptr %35, i64 2
  %37 = load i8, ptr %36, align 1, !tbaa !9
  %38 = sext i8 %37 to i32
  %39 = icmp eq i32 %34, %38
  br i1 %39, label %40, label %50

40:                                               ; preds = %30
  %41 = load ptr, ptr %4, align 8, !tbaa !5
  %42 = getelementptr inbounds i8, ptr %41, i64 7
  %43 = load i8, ptr %42, align 1, !tbaa !9
  %44 = zext i8 %43 to i32
  %45 = load ptr, ptr %5, align 8, !tbaa !5
  %46 = getelementptr inbounds i8, ptr %45, i64 3
  %47 = load i8, ptr %46, align 1, !tbaa !9
  %48 = sext i8 %47 to i32
  %49 = icmp eq i32 %44, %48
  br label %50

50:                                               ; preds = %40, %30, %20, %10
  %51 = phi i1 [ false, %30 ], [ false, %20 ], [ false, %10 ], [ %49, %40 ]
  %52 = zext i1 %51 to i8
  store i8 %52, ptr %3, align 1
  br label %53

53:                                               ; preds = %50, %9
  %54 = load i8, ptr %3, align 1
  ret i8 %54
}

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr noundef) #1

attributes #0 = { mustprogress 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 = { nounwind willreturn memory(read) "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 willreturn memory(read) }

!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++ TBAA"}
!9 = !{!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 nofree nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef zeroext range(i8 0, 2) i8 @_Z25lodepng_chunk_type_equalsPKhPKc(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %1) #2
  %.not = icmp eq i64 %3, 4
  br i1 %.not, label %4, label %36

4:                                                ; preds = %2
  %5 = getelementptr inbounds i8, ptr %0, i64 4
  %6 = load i8, ptr %5, align 1, !tbaa !5
  %7 = zext i8 %6 to i32
  %8 = load i8, ptr %1, align 1, !tbaa !5
  %9 = sext i8 %8 to i32
  %10 = icmp eq i32 %7, %9
  br i1 %10, label %11, label %36

11:                                               ; preds = %4
  %12 = getelementptr inbounds i8, ptr %0, i64 5
  %13 = load i8, ptr %12, align 1, !tbaa !5
  %14 = zext i8 %13 to i32
  %15 = getelementptr inbounds i8, ptr %1, i64 1
  %16 = load i8, ptr %15, align 1, !tbaa !5
  %17 = sext i8 %16 to i32
  %18 = icmp eq i32 %14, %17
  br i1 %18, label %19, label %36

19:                                               ; preds = %11
  %20 = getelementptr inbounds i8, ptr %0, i64 6
  %21 = load i8, ptr %20, align 1, !tbaa !5
  %22 = zext i8 %21 to i32
  %23 = getelementptr inbounds i8, ptr %1, i64 2
  %24 = load i8, ptr %23, align 1, !tbaa !5
  %25 = sext i8 %24 to i32
  %26 = icmp eq i32 %22, %25
  br i1 %26, label %27, label %36

27:                                               ; preds = %19
  %28 = getelementptr inbounds i8, ptr %0, i64 7
  %29 = load i8, ptr %28, align 1, !tbaa !5
  %30 = zext i8 %29 to i32
  %31 = getelementptr inbounds i8, ptr %1, i64 3
  %32 = load i8, ptr %31, align 1, !tbaa !5
  %33 = sext i8 %32 to i32
  %34 = icmp eq i32 %30, %33
  %35 = zext i1 %34 to i8
  br label %36

36:                                               ; preds = %4, %11, %19, %27, %2
  %.0 = phi i8 [ 0, %2 ], [ 0, %19 ], [ 0, %11 ], [ 0, %4 ], [ %35, %27 ]
  ret i8 %.0
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nofree nounwind willreturn memory(argmem: read) 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 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 willreturn memory(read) }

!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++ TBAA"}


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