; LLVM IR from krig/LISP :: komplott (match_number)

; 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: nounwind uwtable
define dso_local i32 @match_number(ptr noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = load i8, ptr %4, align 1, !tbaa !9
  %6 = sext i8 %5 to i32
  %7 = icmp eq i32 %6, 45
  br i1 %7, label %13, label %8

8:                                                ; preds = %1
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = load i8, ptr %9, align 1, !tbaa !9
  %11 = sext i8 %10 to i32
  %12 = icmp eq i32 %11, 43
  br i1 %12, label %13, label %16

13:                                               ; preds = %8, %1
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = getelementptr inbounds i8, ptr %14, i32 1
  store ptr %15, ptr %3, align 8, !tbaa !5
  br label %16

16:                                               ; preds = %13, %8
  br label %17

17:                                               ; preds = %29, %16
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = load i8, ptr %18, align 1, !tbaa !9
  %20 = sext i8 %19 to i32
  %21 = icmp slt i32 %20, 48
  br i1 %21, label %27, label %22

22:                                               ; preds = %17
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = load i8, ptr %23, align 1, !tbaa !9
  %25 = sext i8 %24 to i32
  %26 = icmp sgt i32 %25, 57
  br i1 %26, label %27, label %28

27:                                               ; preds = %22, %17
  store i32 0, ptr %2, align 4
  br label %36

28:                                               ; preds = %22
  br label %29

29:                                               ; preds = %28
  %30 = load ptr, ptr %3, align 8, !tbaa !5
  %31 = getelementptr inbounds i8, ptr %30, i32 1
  store ptr %31, ptr %3, align 8, !tbaa !5
  %32 = load i8, ptr %31, align 1, !tbaa !9
  %33 = sext i8 %32 to i32
  %34 = icmp ne i32 %33, 0
  br i1 %34, label %17, label %35, !llvm.loop !10

35:                                               ; preds = %29
  store i32 1, ptr %2, align 4
  br label %36

36:                                               ; preds = %35, %27
  %37 = load i32, ptr %2, align 4
  ret i32 %37
}

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" }

!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 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"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 range(i32 0, 2) i32 @match_number(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load i8, ptr %0, align 1, !tbaa !5
  switch i8 %2, label %.preheader [
    i8 45, label %3
    i8 43, label %3
  ]

3:                                                ; preds = %1, %1
  %4 = getelementptr inbounds i8, ptr %0, i64 1
  %.pre.pre = load i8, ptr %4, align 1, !tbaa !5
  br label %.preheader

.preheader:                                       ; preds = %1, %3
  %.ph = phi i8 [ %2, %1 ], [ %.pre.pre, %3 ]
  %.1.ph = phi ptr [ %0, %1 ], [ %4, %3 ]
  br label %5

5:                                                ; preds = %.preheader, %8
  %6 = phi i8 [ %10, %8 ], [ %.ph, %.preheader ]
  %.1 = phi ptr [ %9, %8 ], [ %.1.ph, %.preheader ]
  %7 = add i8 %6, -58
  %or.cond = icmp ult i8 %7, -10
  br i1 %or.cond, label %11, label %8

8:                                                ; preds = %5
  %9 = getelementptr inbounds i8, ptr %.1, i64 1
  %10 = load i8, ptr %9, align 1, !tbaa !5
  %.not = icmp eq i8 %10, 0
  br i1 %.not, label %11, label %5, !llvm.loop !8

11:                                               ; preds = %8, %5
  %.06 = phi i32 [ 0, %5 ], [ 1, %8 ]
  ret i32 %.06
}

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,IPSCCPPass,InstCombinePass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass