; LLVM IR from nickmqb/muon :: bootstrap/mu.ll_string (repeatChar__)

; 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.string__ = type { ptr, i32 }
%struct.tag_____StringBuilder__ = type { ptr, i32, i32 }

; 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: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

; Function Attrs: nounwind uwtable
declare dso_local { ptr, i32 } @StringBuilder__compactToString__(ptr noundef) #3

; Function Attrs: nounwind uwtable
declare dso_local void @StringBuilder__writeChar__(ptr noundef, i8 noundef signext) #3

; Function Attrs: nounwind uwtable
define dso_local { ptr, i32 } @string__repeatChar__(i8 noundef signext %0, i32 noundef %1) #3 {
  %3 = alloca %struct.string__, align 8
  %4 = alloca i8, align 1
  %5 = alloca i32, align 4
  %6 = alloca %struct.tag_____StringBuilder__, align 8
  %7 = alloca %struct.tag_____StringBuilder__, align 8
  %8 = alloca i32, align 4
  store i8 %0, ptr %4, align 1, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 16, ptr %6) #4
  call void @llvm.memset.p0.i64(ptr align 8 %6, i8 0, i64 16, i1 false)
  call void @llvm.lifetime.start.p0(i64 16, ptr %7) #4
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %7, ptr align 8 %6, i64 16, i1 false), !tbaa.struct !10
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 0, ptr %8, align 4, !tbaa !8
  br label %9

9:                                                ; preds = %13, %2
  %10 = load i32, ptr %8, align 4, !tbaa !8
  %11 = load i32, ptr %5, align 4, !tbaa !8
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %13, label %17

13:                                               ; preds = %9
  %14 = load i8, ptr %4, align 1, !tbaa !5
  call void @StringBuilder__writeChar__(ptr noundef %7, i8 noundef signext %14)
  %15 = load i32, ptr %8, align 4, !tbaa !8
  %16 = add nsw i32 %15, 1
  store i32 %16, ptr %8, align 4, !tbaa !8
  br label %9, !llvm.loop !13

17:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  %18 = call { ptr, i32 } @StringBuilder__compactToString__(ptr noundef %7)
  %19 = getelementptr inbounds { ptr, i32 }, ptr %3, i32 0, i32 0
  %20 = extractvalue { ptr, i32 } %18, 0
  store ptr %20, ptr %19, align 8
  %21 = getelementptr inbounds { ptr, i32 }, ptr %3, i32 0, i32 1
  %22 = extractvalue { ptr, i32 } %18, 1
  store i32 %22, ptr %21, align 8
  call void @llvm.lifetime.end.p0(i64 16, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 16, ptr %6) #4
  %23 = load { ptr, i32 }, ptr %3, align 8
  ret { ptr, i32 } %23
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !6, i64 0}
!10 = !{i64 0, i64 8, !11, i64 8, i64 4, !8, i64 12, i64 4, !8}
!11 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !6, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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"

%struct.tag_____StringBuilder__ = type { ptr, i32, i32 }

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

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

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

; Function Attrs: nounwind uwtable
declare dso_local { ptr, i32 } @StringBuilder__compactToString__(ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local void @StringBuilder__writeChar__(ptr noundef, i8 noundef signext) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local { ptr, i32 } @string__repeatChar__(i8 noundef signext %0, i32 noundef %1) local_unnamed_addr #2 {
  %3 = alloca %struct.tag_____StringBuilder__, align 8
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %3) #3
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %3, i8 0, i64 16, i1 false)
  %4 = icmp sgt i32 %1, 0
  br i1 %4, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.04 = phi i32 [ %5, %.lr.ph ], [ 0, %2 ]
  call void @StringBuilder__writeChar__(ptr noundef nonnull %3, i8 noundef signext %0)
  %5 = add nuw nsw i32 %.04, 1
  %exitcond.not = icmp eq i32 %5, %1
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %2
  %6 = call { ptr, i32 } @StringBuilder__compactToString__(ptr noundef nonnull %3)
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %3) #3
  ret { ptr, i32 } %6
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #2 = { 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 }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,MemCpyOptPass,SROAPass,SimplifyCFGPass