; LLVM IR from libtcod/libtcod :: src/libtcod (console_printing)

; 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 uwtable
define dso_local i32 @TCOD_console_stringLength(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %4

4:                                                ; preds = %30, %1
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  %6 = load i8, ptr %5, align 1, !tbaa !11
  %7 = icmp ne i8 %6, 0
  br i1 %7, label %8, label %33

8:                                                ; preds = %4
  %9 = load ptr, ptr %2, align 8, !tbaa !5
  %10 = load i8, ptr %9, align 1, !tbaa !11
  %11 = zext i8 %10 to i32
  %12 = icmp eq i32 %11, 6
  br i1 %12, label %18, label %13

13:                                               ; preds = %8
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = load i8, ptr %14, align 1, !tbaa !11
  %16 = zext i8 %15 to i32
  %17 = icmp eq i32 %16, 7
  br i1 %17, label %18, label %21

18:                                               ; preds = %13, %8
  %19 = load ptr, ptr %2, align 8, !tbaa !5
  %20 = getelementptr inbounds i8, ptr %19, i64 3
  store ptr %20, ptr %2, align 8, !tbaa !5
  br label %30

21:                                               ; preds = %13
  %22 = load ptr, ptr %2, align 8, !tbaa !5
  %23 = load i8, ptr %22, align 1, !tbaa !11
  %24 = zext i8 %23 to i32
  %25 = icmp sgt i32 %24, 8
  br i1 %25, label %26, label %29

26:                                               ; preds = %21
  %27 = load i32, ptr %3, align 4, !tbaa !9
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %3, align 4, !tbaa !9
  br label %29

29:                                               ; preds = %26, %21
  br label %30

30:                                               ; preds = %29, %18
  %31 = load ptr, ptr %2, align 8, !tbaa !5
  %32 = getelementptr inbounds i8, ptr %31, i32 1
  store ptr %32, ptr %2, align 8, !tbaa !5
  br label %4, !llvm.loop !12

33:                                               ; preds = %4
  %34 = load i32, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret i32 %34
}

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 = { 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 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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 i32 @TCOD_console_stringLength(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  br label %2

2:                                                ; preds = %9, %1
  %.07 = phi ptr [ %0, %1 ], [ %10, %9 ]
  %.0 = phi i32 [ 0, %1 ], [ %.1, %9 ]
  %3 = load i8, ptr %.07, align 1, !tbaa !5
  switch i8 %3, label %6 [
    i8 0, label %11
    i8 6, label %4
    i8 7, label %4
  ]

4:                                                ; preds = %2, %2
  %5 = getelementptr inbounds i8, ptr %.07, i64 3
  br label %9

6:                                                ; preds = %2
  %7 = icmp ugt i8 %3, 8
  %8 = zext i1 %7 to i32
  %spec.select = add nsw i32 %.0, %8
  br label %9

9:                                                ; preds = %6, %4
  %.18 = phi ptr [ %5, %4 ], [ %.07, %6 ]
  %.1 = phi i32 [ %.0, %4 ], [ %spec.select, %6 ]
  %10 = getelementptr inbounds i8, ptr %.18, i64 1
  br label %2, !llvm.loop !8

11:                                               ; preds = %2
  ret i32 %.0
}

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,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass