; LLVM IR from pictools/pica :: test/gtest/fused-src/gtest/gtest-all.ll (ZN7testing8internal10SkipPrefixEPKcPS2_)

; 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

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

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_ZN7testing8internal10SkipPrefixEPKcPS2_(ptr noundef %0, ptr noundef %1) #2 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = call i64 @strlen(ptr noundef %8) #4
  store i64 %9, ptr %6, align 8, !tbaa !9
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = load ptr, ptr %10, align 8, !tbaa !5
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = load i64, ptr %6, align 8, !tbaa !9
  %14 = call i32 @strncmp(ptr noundef %11, ptr noundef %12, i64 noundef %13) #4
  %15 = icmp eq i32 %14, 0
  br i1 %15, label %16, label %21

16:                                               ; preds = %2
  %17 = load i64, ptr %6, align 8, !tbaa !9
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = load ptr, ptr %18, align 8, !tbaa !5
  %20 = getelementptr inbounds i8, ptr %19, i64 %17
  store ptr %20, ptr %18, align 8, !tbaa !5
  store i1 true, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %22

21:                                               ; preds = %2
  store i1 false, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %22

22:                                               ; preds = %21, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %23 = load i1, ptr %3, align 1
  ret i1 %23
}

; Function Attrs: nounwind willreturn memory(read)
declare i32 @strncmp(ptr noundef, ptr noundef, i64 noundef) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #3 = { nounwind }
attributes #4 = { 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 = !{!10, !10, i64 0}
!10 = !{!"long", !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)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind willreturn memory(read, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local noundef zeroext i1 @_ZN7testing8internal10SkipPrefixEPKcPS2_(ptr nocapture noundef readonly %0, ptr nocapture noundef %1) local_unnamed_addr #1 {
  %3 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %0) #2
  %4 = load ptr, ptr %1, align 8, !tbaa !5
  %5 = tail call i32 @strncmp(ptr noundef %4, ptr noundef %0, i64 noundef %3) #2
  %6 = icmp eq i32 %5, 0
  br i1 %6, label %7, label %9

7:                                                ; preds = %2
  %8 = getelementptr inbounds i8, ptr %4, i64 %3
  store ptr %8, ptr %1, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %2, %7
  ret i1 %6
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i32 @strncmp(ptr nocapture noundef, ptr nocapture noundef, i64 noundef) local_unnamed_addr #0

attributes #0 = { 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 #1 = { mustprogress nofree nounwind willreturn memory(read, argmem: 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" }
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"}


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