; 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: 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 uwtable
declare dso_local void @strbuf_grow(ptr noundef, i64 noundef) #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @strbuf_setlen(ptr noundef, i64 noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @strbuf_getwholeline(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
  %8 = alloca i32, align 4
  %9 = 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
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  %10 = load ptr, ptr %6, align 8, !tbaa !5
  %11 = call i32 @feof(ptr noundef %10) #5
  %12 = icmp ne i32 %11, 0
  br i1 %12, label %13, label %14

13:                                               ; preds = %3
  store i32 -1, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %59

14:                                               ; preds = %3
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  call void @strbuf_setlen(ptr noundef %15, i64 noundef 0)
  br label %16

16:                                               ; preds = %41, %14
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = call i32 @fgetc(ptr noundef %17)
  store i32 %18, ptr %8, align 4, !tbaa !9
  %19 = icmp ne i32 %18, -1
  br i1 %19, label %20, label %42

20:                                               ; preds = %16
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = call i64 @strbuf_avail(ptr noundef %21)
  %23 = icmp ne i64 %22, 0
  br i1 %23, label %26, label %24

24:                                               ; preds = %20
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  call void @strbuf_grow(ptr noundef %25, i64 noundef 1)
  br label %26

26:                                               ; preds = %24, %20
  %27 = load i32, ptr %8, align 4, !tbaa !9
  %28 = trunc i32 %27 to i8
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.strbuf, ptr %29, i32 0, i32 2
  %31 = load ptr, ptr %30, align 8, !tbaa !11
  %32 = load ptr, ptr %5, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.strbuf, ptr %32, i32 0, i32 1
  %34 = load i64, ptr %33, align 8, !tbaa !14
  %35 = add i64 %34, 1
  store i64 %35, ptr %33, align 8, !tbaa !14
  %36 = getelementptr inbounds i8, ptr %31, i64 %34
  store i8 %28, ptr %36, align 1, !tbaa !15
  %37 = load i32, ptr %8, align 4, !tbaa !9
  %38 = load i32, ptr %7, align 4, !tbaa !9
  %39 = icmp eq i32 %37, %38
  br i1 %39, label %40, label %41

40:                                               ; preds = %26
  br label %42

41:                                               ; preds = %26
  br label %16, !llvm.loop !16

42:                                               ; preds = %40, %16
  %43 = load i32, ptr %8, align 4, !tbaa !9
  %44 = icmp eq i32 %43, -1
  br i1 %44, label %45, label %51

45:                                               ; preds = %42
  %46 = load ptr, ptr %5, align 8, !tbaa !5
  %47 = getelementptr inbounds %struct.strbuf, ptr %46, i32 0, i32 1
  %48 = load i64, ptr %47, align 8, !tbaa !14
  %49 = icmp eq i64 %48, 0
  br i1 %49, label %50, label %51

50:                                               ; preds = %45
  store i32 -1, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %59

51:                                               ; preds = %45, %42
  %52 = load ptr, ptr %5, align 8, !tbaa !5
  %53 = getelementptr inbounds %struct.strbuf, ptr %52, i32 0, i32 2
  %54 = load ptr, ptr %53, align 8, !tbaa !11
  %55 = load ptr, ptr %5, align 8, !tbaa !5
  %56 = getelementptr inbounds %struct.strbuf, ptr %55, i32 0, i32 1
  %57 = load i64, ptr %56, align 8, !tbaa !14
  %58 = getelementptr inbounds i8, ptr %54, i64 %57
  store i8 0, ptr %58, align 1, !tbaa !15
  store i32 0, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %59

59:                                               ; preds = %51, %50, %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  %60 = load i32, ptr %4, align 4
  ret i32 %60
}

; Function Attrs: nounwind
declare i32 @feof(ptr noundef) #3

declare i32 @fgetc(ptr noundef) #4

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @strbuf_avail(ptr noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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" }
attributes #2 = { 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 #3 = { nounwind "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 #4 = { "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 #5 = { 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 = !{!"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}
!16 = distinct !{!16, !17}
!17 = !{!"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
declare dso_local void @strbuf_grow(ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @strbuf_setlen(ptr noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @strbuf_getwholeline(ptr noundef %0, ptr nocapture noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = tail call i32 @feof(ptr noundef %1) #3
  %.not = icmp eq i32 %4, 0
  br i1 %.not, label %5, label %26

5:                                                ; preds = %3
  tail call void @strbuf_setlen(ptr noundef %0, i64 noundef 0)
  %6 = getelementptr inbounds i8, ptr %0, i64 16
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  br label %8

8:                                                ; preds = %13, %5
  %9 = tail call i32 @fgetc(ptr noundef %1)
  %cond = icmp eq i32 %9, -1
  br i1 %cond, label %20, label %10

10:                                               ; preds = %8
  %11 = tail call i64 @strbuf_avail(ptr noundef %0)
  %.not16 = icmp eq i64 %11, 0
  br i1 %.not16, label %12, label %13

12:                                               ; preds = %10
  tail call void @strbuf_grow(ptr noundef %0, i64 noundef 1)
  br label %13

13:                                               ; preds = %12, %10
  %14 = trunc i32 %9 to i8
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = load i64, ptr %7, align 8, !tbaa !11
  %17 = add i64 %16, 1
  store i64 %17, ptr %7, align 8, !tbaa !11
  %18 = getelementptr inbounds i8, ptr %15, i64 %16
  store i8 %14, ptr %18, align 1, !tbaa !12
  %19 = icmp eq i32 %9, %2
  br i1 %19, label %.loopexit.loopexit, label %8, !llvm.loop !13

20:                                               ; preds = %8
  %21 = load i64, ptr %7, align 8, !tbaa !11
  %22 = icmp eq i64 %21, 0
  br i1 %22, label %26, label %.loopexit

.loopexit.loopexit:                               ; preds = %13
  %.pre = load i64, ptr %7, align 8, !tbaa !11
  br label %.loopexit

.loopexit:                                        ; preds = %.loopexit.loopexit, %20
  %23 = phi i64 [ %.pre, %.loopexit.loopexit ], [ %21, %20 ]
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  %25 = getelementptr inbounds i8, ptr %24, i64 %23
  store i8 0, ptr %25, align 1, !tbaa !12
  br label %26

26:                                               ; preds = %20, %3, %.loopexit
  %.0 = phi i32 [ 0, %.loopexit ], [ -1, %3 ], [ -1, %20 ]
  ret i32 %.0
}

; Function Attrs: nofree nounwind
declare noundef i32 @feof(ptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @fgetc(ptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @strbuf_avail(ptr noundef) local_unnamed_addr #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 = { 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 #2 = { nofree nounwind "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 }

!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}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


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