; LLVM IR from SSBMTonberry/pocketlzma :: ref_spec/lzma1900/CPP/Common (MyString)

; 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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef signext i8 @_Z17MyCharLower_Asciic(i8 noundef signext) #1

declare i32 @__gxx_personality_v0(...)

; Function Attrs: noinline noreturn nounwind uwtable
declare hidden void @__clang_call_terminate(ptr noundef) #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef signext i32 @_Z17MyCharLower_Asciiw(i32 noundef signext) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z39IsString1PrefixedByString2_NoCase_AsciiPKwPKc(ptr noundef %0, ptr noundef %1) #3 personality ptr @__gxx_personality_v0 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i8, align 1
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %39, %2
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #4
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = getelementptr inbounds i8, ptr %10, i32 1
  store ptr %11, ptr %5, align 8, !tbaa !5
  %12 = load i8, ptr %10, align 1, !tbaa !9
  store i8 %12, ptr %6, align 1, !tbaa !9
  %13 = load i8, ptr %6, align 1, !tbaa !9
  %14 = sext i8 %13 to i32
  %15 = icmp eq i32 %14, 0
  br i1 %15, label %16, label %17

16:                                               ; preds = %9
  store i1 true, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %37

17:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = getelementptr inbounds i32, ptr %18, i32 1
  store ptr %19, ptr %4, align 8, !tbaa !5
  %20 = load i32, ptr %18, align 4, !tbaa !10
  store i32 %20, ptr %8, align 4, !tbaa !10
  %21 = load i32, ptr %8, align 4, !tbaa !10
  %22 = load i8, ptr %6, align 1, !tbaa !9
  %23 = zext i8 %22 to i32
  %24 = icmp ne i32 %21, %23
  br i1 %24, label %25, label %35

25:                                               ; preds = %17
  %26 = load i32, ptr %8, align 4, !tbaa !10
  %27 = invoke noundef signext i32 @_Z17MyCharLower_Asciiw(i32 noundef signext %26)
          to label %28 unwind label %42

28:                                               ; preds = %25
  %29 = load i8, ptr %6, align 1, !tbaa !9
  %30 = invoke noundef signext i8 @_Z17MyCharLower_Asciic(i8 noundef signext %29)
          to label %31 unwind label %42

31:                                               ; preds = %28
  %32 = zext i8 %30 to i32
  %33 = icmp ne i32 %27, %32
  br i1 %33, label %34, label %35

34:                                               ; preds = %31
  store i1 false, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %36

35:                                               ; preds = %31, %17
  store i32 0, ptr %7, align 4
  br label %36

36:                                               ; preds = %35, %34
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %37

37:                                               ; preds = %36, %16
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #4
  %38 = load i32, ptr %7, align 4
  switch i32 %38, label %45 [
    i32 0, label %39
    i32 1, label %40
  ]

39:                                               ; preds = %37
  br label %9, !llvm.loop !12

40:                                               ; preds = %37
  %41 = load i1, ptr %3, align 1
  ret i1 %41

42:                                               ; preds = %28, %25
  %43 = landingpad { ptr, i32 }
          catch ptr null
  %44 = extractvalue { ptr, i32 } %43, 0
  call void @__clang_call_terminate(ptr %44) #5
  unreachable

45:                                               ; preds = %37
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint 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 #2 = { noinline noreturn nounwind uwtable "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 = { 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 #4 = { nounwind }
attributes #5 = { noreturn 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++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"wchar_t", !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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef signext i8 @_Z17MyCharLower_Asciic(i8 noundef signext) local_unnamed_addr #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef signext i32 @_Z17MyCharLower_Asciiw(i32 noundef signext) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z39IsString1PrefixedByString2_NoCase_AsciiPKwPKc(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #1 personality ptr @__gxx_personality_v0 {
  %3 = load i8, ptr %1, align 1, !tbaa !5
  %4 = icmp eq i8 %3, 0
  br i1 %4, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %14
  %5 = phi i8 [ %15, %14 ], [ %3, %2 ]
  %.pn = phi ptr [ %6, %14 ], [ %1, %2 ]
  %.01020 = phi ptr [ %7, %14 ], [ %0, %2 ]
  %6 = getelementptr inbounds i8, ptr %.pn, i64 1
  %7 = getelementptr inbounds i8, ptr %.01020, i64 4
  %8 = load i32, ptr %.01020, align 4, !tbaa !8
  %9 = zext i8 %5 to i32
  %.not = icmp eq i32 %8, %9
  br i1 %.not, label %14, label %10

10:                                               ; preds = %.lr.ph
  %11 = tail call noundef signext i32 @_Z17MyCharLower_Asciiw(i32 noundef signext %8)
  %12 = tail call noundef signext i8 @_Z17MyCharLower_Asciic(i8 noundef signext %5)
  %13 = zext i8 %12 to i32
  %.not14 = icmp eq i32 %11, %13
  br i1 %.not14, label %14, label %._crit_edge

14:                                               ; preds = %.lr.ph, %10
  %15 = load i8, ptr %6, align 1, !tbaa !5
  %16 = icmp eq i8 %15, 0
  br i1 %16, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %10, %14, %2
  %.lcssa = phi i1 [ true, %2 ], [ true, %14 ], [ false, %10 ]
  ret i1 %.lcssa
}

attributes #0 = { inlinehint 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 #1 = { 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" }

!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++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"wchar_t", !6, i64 0}


; Effective O3 passes: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass