; LLVM IR from mbheinen/bpa-ipf-tsp :: libgui (stdlib_ext)

; 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"

@workarea = external hidden global [20 x i8], align 16

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

; Function Attrs: nounwind uwtable
define dso_local void @chg_str_blanks_to_zeros(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %6 = load i32, ptr %4, align 4, !tbaa !9
  %7 = sext i32 %6 to i64
  %8 = getelementptr inbounds [20 x i8], ptr @workarea, i64 0, i64 %7
  store i8 0, ptr %8, align 1, !tbaa !11
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %70, %2
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds i8, ptr %10, i64 %12
  %14 = load i8, ptr %13, align 1, !tbaa !11
  %15 = sext i8 %14 to i32
  %16 = icmp ne i32 %15, 0
  br i1 %16, label %17, label %21

17:                                               ; preds = %9
  %18 = load i32, ptr %5, align 4, !tbaa !9
  %19 = load i32, ptr %4, align 4, !tbaa !9
  %20 = icmp slt i32 %18, %19
  br label %21

21:                                               ; preds = %17, %9
  %22 = phi i1 [ false, %9 ], [ %20, %17 ]
  br i1 %22, label %23, label %73

23:                                               ; preds = %21
  %24 = load ptr, ptr %3, align 8, !tbaa !5
  %25 = load i32, ptr %5, align 4, !tbaa !9
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds i8, ptr %24, i64 %26
  %28 = load i8, ptr %27, align 1, !tbaa !11
  %29 = sext i8 %28 to i32
  %30 = icmp eq i32 %29, 32
  br i1 %30, label %31, label %35

31:                                               ; preds = %23
  %32 = load i32, ptr %5, align 4, !tbaa !9
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds [20 x i8], ptr @workarea, i64 0, i64 %33
  store i8 48, ptr %34, align 1, !tbaa !11
  br label %70

35:                                               ; preds = %23
  %36 = load ptr, ptr %3, align 8, !tbaa !5
  %37 = load i32, ptr %5, align 4, !tbaa !9
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds i8, ptr %36, i64 %38
  %40 = load i8, ptr %39, align 1, !tbaa !11
  %41 = sext i8 %40 to i32
  %42 = icmp eq i32 %41, 45
  br i1 %42, label %51, label %43

43:                                               ; preds = %35
  %44 = load ptr, ptr %3, align 8, !tbaa !5
  %45 = load i32, ptr %5, align 4, !tbaa !9
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds i8, ptr %44, i64 %46
  %48 = load i8, ptr %47, align 1, !tbaa !11
  %49 = sext i8 %48 to i32
  %50 = icmp eq i32 %49, 43
  br i1 %50, label %51, label %60

51:                                               ; preds = %43, %35
  %52 = load i32, ptr %5, align 4, !tbaa !9
  %53 = sext i32 %52 to i64
  %54 = getelementptr inbounds [20 x i8], ptr @workarea, i64 0, i64 %53
  store i8 48, ptr %54, align 1, !tbaa !11
  %55 = load ptr, ptr %3, align 8, !tbaa !5
  %56 = load i32, ptr %5, align 4, !tbaa !9
  %57 = sext i32 %56 to i64
  %58 = getelementptr inbounds i8, ptr %55, i64 %57
  %59 = load i8, ptr %58, align 1, !tbaa !11
  store i8 %59, ptr @workarea, align 16, !tbaa !11
  br label %69

60:                                               ; preds = %43
  %61 = load ptr, ptr %3, align 8, !tbaa !5
  %62 = load i32, ptr %5, align 4, !tbaa !9
  %63 = sext i32 %62 to i64
  %64 = getelementptr inbounds i8, ptr %61, i64 %63
  %65 = load i8, ptr %64, align 1, !tbaa !11
  %66 = load i32, ptr %5, align 4, !tbaa !9
  %67 = sext i32 %66 to i64
  %68 = getelementptr inbounds [20 x i8], ptr @workarea, i64 0, i64 %67
  store i8 %65, ptr %68, align 1, !tbaa !11
  br label %69

69:                                               ; preds = %60, %51
  br label %70

70:                                               ; preds = %69, %31
  %71 = load i32, ptr %5, align 4, !tbaa !9
  %72 = add nsw i32 %71, 1
  store i32 %72, ptr %5, align 4, !tbaa !9
  br label %9, !llvm.loop !12

73:                                               ; preds = %21
  %74 = load i32, ptr %5, align 4, !tbaa !9
  %75 = sext i32 %74 to i64
  %76 = getelementptr inbounds [20 x i8], ptr @workarea, i64 0, i64 %75
  store i8 0, ptr %76, align 1, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret void
}

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

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"

@workarea = external hidden local_unnamed_addr global [20 x i8], align 16

; Function Attrs: nofree norecurse nosync nounwind memory(write, argmem: read, inaccessiblemem: none) uwtable
define dso_local void @chg_str_blanks_to_zeros(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = sext i32 %1 to i64
  %4 = getelementptr inbounds [20 x i8], ptr @workarea, i64 0, i64 %3
  store i8 0, ptr %4, align 1, !tbaa !5
  %5 = load i8, ptr %0, align 1, !tbaa !5
  %6 = icmp ne i8 %5, 0
  %7 = icmp sgt i32 %1, 0
  %8 = and i1 %7, %6
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %18
  %indvars.iv = phi i64 [ %indvars.iv.next, %18 ], [ 0, %2 ]
  %9 = phi i8 [ %20, %18 ], [ %5, %2 ]
  switch i8 %9, label %16 [
    i8 32, label %10
    i8 45, label %12
    i8 43, label %12
  ]

10:                                               ; preds = %.lr.ph
  %11 = getelementptr inbounds [20 x i8], ptr @workarea, i64 0, i64 %indvars.iv
  store i8 48, ptr %11, align 1, !tbaa !5
  br label %18

12:                                               ; preds = %.lr.ph, %.lr.ph
  %13 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv
  %14 = getelementptr inbounds [20 x i8], ptr @workarea, i64 0, i64 %indvars.iv
  store i8 48, ptr %14, align 1, !tbaa !5
  %15 = load i8, ptr %13, align 1, !tbaa !5
  store i8 %15, ptr @workarea, align 16, !tbaa !5
  br label %18

16:                                               ; preds = %.lr.ph
  %17 = getelementptr inbounds [20 x i8], ptr @workarea, i64 0, i64 %indvars.iv
  store i8 %9, ptr %17, align 1, !tbaa !5
  br label %18

18:                                               ; preds = %12, %16, %10
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %19 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next
  %20 = load i8, ptr %19, align 1, !tbaa !5
  %21 = icmp ne i8 %20, 0
  %22 = icmp slt i64 %indvars.iv.next, %3
  %23 = and i1 %22, %21
  br i1 %23, label %.lr.ph, label %._crit_edge, !llvm.loop !8

._crit_edge:                                      ; preds = %18, %2
  %.lcssa = phi i64 [ 0, %2 ], [ %indvars.iv.next, %18 ]
  %24 = getelementptr inbounds [20 x i8], ptr @workarea, i64 0, i64 %.lcssa
  store i8 0, ptr %24, align 1, !tbaa !5
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind memory(write, argmem: 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,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass