; LLVM IR from jspd-group/pegit :: src (strbuf)

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

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

; Function Attrs: nounwind uwtable
declare dso_local i32 @strbuf_getwholeline(ptr noundef, ptr noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @strbuf_getline(ptr noundef %0, ptr noundef %1, i32 noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  %9 = load ptr, ptr %6, align 8, !tbaa !5
  %10 = load i32, ptr %7, align 4, !tbaa !9
  %11 = call i32 @strbuf_getwholeline(ptr noundef %8, ptr noundef %9, i32 noundef %10)
  %12 = icmp ne i32 %11, 0
  br i1 %12, label %13, label %14

13:                                               ; preds = %3
  store i32 -1, ptr %4, align 4
  br label %34

14:                                               ; preds = %3
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.strbuf, ptr %15, i32 0, i32 2
  %17 = load ptr, ptr %16, align 8, !tbaa !11
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.strbuf, ptr %18, i32 0, i32 1
  %20 = load i64, ptr %19, align 8, !tbaa !14
  %21 = sub i64 %20, 1
  %22 = getelementptr inbounds i8, ptr %17, i64 %21
  %23 = load i8, ptr %22, align 1, !tbaa !15
  %24 = sext i8 %23 to i32
  %25 = load i32, ptr %7, align 4, !tbaa !9
  %26 = icmp eq i32 %24, %25
  br i1 %26, label %27, label %33

27:                                               ; preds = %14
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.strbuf, ptr %29, i32 0, i32 1
  %31 = load i64, ptr %30, align 8, !tbaa !14
  %32 = sub i64 %31, 1
  call void @strbuf_setlen(ptr noundef %28, i64 noundef %32)
  br label %33

33:                                               ; preds = %27, %14
  store i32 0, ptr %4, align 4
  br label %34

34:                                               ; preds = %33, %13
  %35 = load i32, ptr %4, align 4
  ret i32 %35
}

attributes #0 = { inlinehint 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 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 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 16}
!12 = !{!"strbuf", !13, i64 0, !13, i64 8, !6, i64 16}
!13 = !{!"long", !7, i64 0}
!14 = !{!12, !13, i64 8}
!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: inlinehint nounwind uwtable
declare hidden void @strbuf_setlen(ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @strbuf_getwholeline(ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @strbuf_getline(ptr noundef %0, ptr noundef %1, i32 noundef %2) local_unnamed_addr #1 {
  %4 = tail call i32 @strbuf_getwholeline(ptr noundef %0, ptr noundef %1, i32 noundef %2)
  %.not = icmp eq i32 %4, 0
  br i1 %.not, label %5, label %16

5:                                                ; preds = %3
  %6 = getelementptr inbounds i8, ptr %0, i64 16
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  %8 = getelementptr inbounds i8, ptr %0, i64 8
  %9 = load i64, ptr %8, align 8, !tbaa !11
  %10 = add i64 %9, -1
  %11 = getelementptr inbounds i8, ptr %7, i64 %10
  %12 = load i8, ptr %11, align 1, !tbaa !12
  %13 = sext i8 %12 to i32
  %14 = icmp eq i32 %13, %2
  br i1 %14, label %15, label %16

15:                                               ; preds = %5
  tail call void @strbuf_setlen(ptr noundef nonnull %0, i64 noundef %10)
  br label %16

16:                                               ; preds = %5, %15, %3
  %.0 = phi i32 [ -1, %3 ], [ 0, %15 ], [ 0, %5 ]
  ret i32 %.0
}

attributes #0 = { inlinehint 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 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, !10, i64 16}
!6 = !{!"strbuf", !7, i64 0, !7, i64 8, !10, i64 16}
!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 = !{!8, !8, i64 0}


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