; LLVM IR from fritzsedlazeck/SURVIVOR :: src/simulator/SV_Simulator.ll (Z17parse_value_floatPcm)

; 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: mustprogress nounwind uwtable
define dso_local noundef float @_Z17parse_value_floatPcm(ptr noundef %0, i64 noundef %1) #1 {
  %3 = alloca float, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store i64 1, ptr %7, align 8, !tbaa !9
  br label %9

9:                                                ; preds = %50, %2
  %10 = load i64, ptr %7, align 8, !tbaa !9
  %11 = load i64, ptr %5, align 8, !tbaa !9
  %12 = icmp ult i64 %10, %11
  br i1 %12, label %13, label %27

13:                                               ; preds = %9
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = load i64, ptr %7, align 8, !tbaa !9
  %16 = getelementptr inbounds i8, ptr %14, i64 %15
  %17 = load i8, ptr %16, align 1, !tbaa !13
  %18 = sext i8 %17 to i32
  %19 = icmp ne i32 %18, 10
  br i1 %19, label %20, label %27

20:                                               ; preds = %13
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = load i64, ptr %7, align 8, !tbaa !9
  %23 = getelementptr inbounds i8, ptr %21, i64 %22
  %24 = load i8, ptr %23, align 1, !tbaa !13
  %25 = sext i8 %24 to i32
  %26 = icmp ne i32 %25, 0
  br label %27

27:                                               ; preds = %20, %13, %9
  %28 = phi i1 [ false, %13 ], [ false, %9 ], [ %26, %20 ]
  br i1 %28, label %30, label %29

29:                                               ; preds = %27
  store i32 2, ptr %8, align 4
  br label %53

30:                                               ; preds = %27
  %31 = load i32, ptr %6, align 4, !tbaa !11
  %32 = icmp eq i32 %31, 1
  br i1 %32, label %33, label %39

33:                                               ; preds = %30
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = load i64, ptr %7, align 8, !tbaa !9
  %36 = getelementptr inbounds i8, ptr %34, i64 %35
  %37 = call double @atof(ptr noundef %36) #4
  %38 = fptrunc double %37 to float
  store float %38, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %53

39:                                               ; preds = %30
  %40 = load ptr, ptr %4, align 8, !tbaa !5
  %41 = load i64, ptr %7, align 8, !tbaa !9
  %42 = getelementptr inbounds i8, ptr %40, i64 %41
  %43 = load i8, ptr %42, align 1, !tbaa !13
  %44 = sext i8 %43 to i32
  %45 = icmp eq i32 %44, 32
  br i1 %45, label %46, label %49

46:                                               ; preds = %39
  %47 = load i32, ptr %6, align 4, !tbaa !11
  %48 = add nsw i32 %47, 1
  store i32 %48, ptr %6, align 4, !tbaa !11
  br label %49

49:                                               ; preds = %46, %39
  br label %50

50:                                               ; preds = %49
  %51 = load i64, ptr %7, align 8, !tbaa !9
  %52 = add i64 %51, 1
  store i64 %52, ptr %7, align 8, !tbaa !9
  br label %9, !llvm.loop !14

53:                                               ; preds = %33, %29
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  %54 = load i32, ptr %8, align 4
  switch i32 %54, label %56 [
    i32 2, label %55
  ]

55:                                               ; preds = %53
  store float -1.000000e+00, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %56

56:                                               ; preds = %55, %53
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  %57 = load float, ptr %3, align 4
  ret float %57
}

; Function Attrs: inlinehint mustprogress nounwind willreturn memory(read) uwtable
declare double @atof(ptr noundef nonnull) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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" }
attributes #2 = { inlinehint mustprogress nounwind willreturn memory(read) 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 }
attributes #4 = { nounwind willreturn memory(read) }

!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 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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: mustprogress nofree nounwind willreturn memory(read) uwtable
define dso_local noundef float @_Z17parse_value_floatPcm(ptr nocapture noundef readonly %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = icmp ugt i64 %1, 1
  br i1 %3, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %2, %7
  %.01423 = phi i64 [ %9, %7 ], [ 1, %2 ]
  %.01522 = phi i32 [ %spec.select, %7 ], [ 0, %2 ]
  %4 = getelementptr inbounds i8, ptr %0, i64 %.01423
  %5 = load i8, ptr %4, align 1, !tbaa !5
  switch i8 %5, label %6 [
    i8 10, label %.loopexit
    i8 0, label %.loopexit
  ]

6:                                                ; preds = %.lr.ph
  %.not = icmp eq i32 %.01522, 0
  br i1 %.not, label %7, label %.critedge

7:                                                ; preds = %6
  %8 = icmp eq i8 %5, 32
  %spec.select = zext i1 %8 to i32
  %9 = add nuw i64 %.01423, 1
  %exitcond.not = icmp eq i64 %9, %1
  br i1 %exitcond.not, label %.loopexit, label %.lr.ph, !llvm.loop !8

.critedge:                                        ; preds = %6
  %10 = getelementptr inbounds i8, ptr %0, i64 %.01423
  %11 = tail call double @atof(ptr noundef %10) #2
  %12 = fptrunc double %11 to float
  br label %.loopexit

.loopexit:                                        ; preds = %.lr.ph, %.lr.ph, %7, %2, %.critedge
  %13 = phi float [ %12, %.critedge ], [ -1.000000e+00, %2 ], [ -1.000000e+00, %7 ], [ -1.000000e+00, %.lr.ph ], [ -1.000000e+00, %.lr.ph ]
  ret float %13
}

; Function Attrs: inlinehint mustprogress nofree nounwind willreturn memory(read) uwtable
declare double @atof(ptr nocapture noundef nonnull) local_unnamed_addr #1

attributes #0 = { mustprogress nofree nounwind willreturn memory(read) 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 = { inlinehint mustprogress nofree nounwind willreturn memory(read) 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 willreturn memory(read) }

!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 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


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