; LLVM IR from FedericaPaoli1/stm32-speech-recognition-and-traduction :: Core/Src (execution_time)

; 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.time_statistics = type { i32, i32, i32, i32 }

@time_statistics_blocks = external dso_local global [3 x %struct.time_statistics], 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local void @execution_time_stop(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  store i32 %0, ptr %2, align 4, !tbaa !5
  %5 = load i32, ptr %2, align 4, !tbaa !5
  %6 = icmp ult i32 %5, 3
  br i1 %6, label %7, label %47

7:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  %8 = load i32, ptr inttoptr (i64 3758100484 to ptr), align 4, !tbaa !5
  store i32 %8, ptr %3, align 4, !tbaa !5
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = zext i32 %9 to i64
  %11 = getelementptr inbounds [3 x %struct.time_statistics], ptr @time_statistics_blocks, i64 0, i64 %10
  store ptr %11, ptr %4, align 8, !tbaa !9
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = load ptr, ptr %4, align 8, !tbaa !9
  %14 = getelementptr inbounds %struct.time_statistics, ptr %13, i32 0, i32 0
  %15 = load i32, ptr %14, align 4, !tbaa !11
  %16 = sub i32 %12, %15
  %17 = load ptr, ptr %4, align 8, !tbaa !9
  %18 = getelementptr inbounds %struct.time_statistics, ptr %17, i32 0, i32 1
  store i32 %16, ptr %18, align 4, !tbaa !13
  %19 = load ptr, ptr %4, align 8, !tbaa !9
  %20 = getelementptr inbounds %struct.time_statistics, ptr %19, i32 0, i32 2
  %21 = load i32, ptr %20, align 4, !tbaa !14
  %22 = load ptr, ptr %4, align 8, !tbaa !9
  %23 = getelementptr inbounds %struct.time_statistics, ptr %22, i32 0, i32 1
  %24 = load i32, ptr %23, align 4, !tbaa !13
  %25 = icmp ult i32 %21, %24
  br i1 %25, label %26, label %32

26:                                               ; preds = %7
  %27 = load ptr, ptr %4, align 8, !tbaa !9
  %28 = getelementptr inbounds %struct.time_statistics, ptr %27, i32 0, i32 1
  %29 = load i32, ptr %28, align 4, !tbaa !13
  %30 = load ptr, ptr %4, align 8, !tbaa !9
  %31 = getelementptr inbounds %struct.time_statistics, ptr %30, i32 0, i32 2
  store i32 %29, ptr %31, align 4, !tbaa !14
  br label %32

32:                                               ; preds = %26, %7
  %33 = load ptr, ptr %4, align 8, !tbaa !9
  %34 = getelementptr inbounds %struct.time_statistics, ptr %33, i32 0, i32 3
  %35 = load i32, ptr %34, align 4, !tbaa !15
  %36 = load ptr, ptr %4, align 8, !tbaa !9
  %37 = getelementptr inbounds %struct.time_statistics, ptr %36, i32 0, i32 1
  %38 = load i32, ptr %37, align 4, !tbaa !13
  %39 = icmp ugt i32 %35, %38
  br i1 %39, label %40, label %46

40:                                               ; preds = %32
  %41 = load ptr, ptr %4, align 8, !tbaa !9
  %42 = getelementptr inbounds %struct.time_statistics, ptr %41, i32 0, i32 1
  %43 = load i32, ptr %42, align 4, !tbaa !13
  %44 = load ptr, ptr %4, align 8, !tbaa !9
  %45 = getelementptr inbounds %struct.time_statistics, ptr %44, i32 0, i32 3
  store i32 %43, ptr %45, align 4, !tbaa !15
  br label %46

46:                                               ; preds = %40, %32
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  br label %47

47:                                               ; preds = %46, %1
  ret void
}

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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"time_statistics", !6, i64 0, !6, i64 4, !6, i64 8, !6, i64 12}
!13 = !{!12, !6, i64 4}
!14 = !{!12, !6, i64 8}
!15 = !{!12, !6, i64 12}


; 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.time_statistics = type { i32, i32, i32, i32 }

@time_statistics_blocks = external dso_local local_unnamed_addr global [3 x %struct.time_statistics], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, argmem: read, inaccessiblemem: none) uwtable
define dso_local void @execution_time_stop(i32 noundef %0) local_unnamed_addr #0 {
  %2 = icmp ult i32 %0, 3
  br i1 %2, label %3, label %19

3:                                                ; preds = %1
  %4 = load i32, ptr inttoptr (i64 3758100484 to ptr), align 4, !tbaa !5
  %5 = zext nneg i32 %0 to i64
  %6 = getelementptr inbounds [3 x %struct.time_statistics], ptr @time_statistics_blocks, i64 0, i64 %5
  %7 = load i32, ptr %6, align 16, !tbaa !9
  %8 = sub i32 %4, %7
  %9 = getelementptr inbounds i8, ptr %6, i64 4
  store i32 %8, ptr %9, align 4, !tbaa !11
  %10 = getelementptr inbounds i8, ptr %6, i64 8
  %11 = load i32, ptr %10, align 8, !tbaa !12
  %12 = icmp ult i32 %11, %8
  br i1 %12, label %13, label %14

13:                                               ; preds = %3
  store i32 %8, ptr %10, align 8, !tbaa !12
  br label %14

14:                                               ; preds = %13, %3
  %15 = getelementptr inbounds i8, ptr %6, i64 12
  %16 = load i32, ptr %15, align 4, !tbaa !13
  %17 = icmp ugt i32 %16, %8
  br i1 %17, label %18, label %19

18:                                               ; preds = %14
  store i32 %8, ptr %15, align 4, !tbaa !13
  br label %19

19:                                               ; preds = %14, %18, %1
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !6, i64 0}
!10 = !{!"time_statistics", !6, i64 0, !6, i64 4, !6, i64 8, !6, i64 12}
!11 = !{!10, !6, i64 4}
!12 = !{!10, !6, i64 8}
!13 = !{!10, !6, i64 12}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass