; LLVM IR from thalium/icebox :: third_party/virtualbox/src/VBox/Devices/EFI/Firmware/OptionRomPkg (SearchEdidTiming)

; 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.VALID_EDID_TIMING = type { i32, [17 x i32] }

; 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
declare dso_local i32 @CalculateEdidKey(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local zeroext i8 @SearchEdidTiming(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca i8, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %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
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = call i32 @CalculateEdidKey(ptr noundef %9)
  store i32 %10, ptr %7, align 4, !tbaa !9
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %28, %2
  %12 = load i32, ptr %6, align 4, !tbaa !9
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.VALID_EDID_TIMING, ptr %13, i32 0, i32 0
  %15 = load i32, ptr %14, align 4, !tbaa !11
  %16 = icmp ult i32 %12, %15
  br i1 %16, label %17, label %31

17:                                               ; preds = %11
  %18 = load i32, ptr %7, align 4, !tbaa !9
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.VALID_EDID_TIMING, ptr %19, i32 0, i32 1
  %21 = load i32, ptr %6, align 4, !tbaa !9
  %22 = zext i32 %21 to i64
  %23 = getelementptr inbounds [17 x i32], ptr %20, i64 0, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !9
  %25 = icmp eq i32 %18, %24
  br i1 %25, label %26, label %27

26:                                               ; preds = %17
  store i8 1, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %32

27:                                               ; preds = %17
  br label %28

28:                                               ; preds = %27
  %29 = load i32, ptr %6, align 4, !tbaa !9
  %30 = add i32 %29, 1
  store i32 %30, ptr %6, align 4, !tbaa !9
  br label %11, !llvm.loop !13

31:                                               ; preds = %11
  store i8 0, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %32

32:                                               ; preds = %31, %26
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %33 = load i8, ptr %3, align 1
  ret i8 %33
}

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 = !{!12, !10, i64 0}
!12 = !{!"", !10, i64 0, !7, i64 4}
!13 = distinct !{!13, !14}
!14 = !{!"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: nounwind uwtable
declare dso_local i32 @CalculateEdidKey(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local zeroext range(i8 0, 2) i8 @SearchEdidTiming(ptr nocapture noundef readonly %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = tail call i32 @CalculateEdidKey(ptr noundef %1)
  %4 = getelementptr inbounds i8, ptr %0, i64 4
  %5 = load i32, ptr %0, align 4, !tbaa !5
  %.not = icmp eq i32 %5, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = zext i32 %5 to i64
  br label %.lr.ph

6:                                                ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !10

.lr.ph:                                           ; preds = %.lr.ph.preheader, %6
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %6 ]
  %7 = getelementptr inbounds [17 x i32], ptr %4, i64 0, i64 %indvars.iv
  %8 = load i32, ptr %7, align 4, !tbaa !12
  %9 = icmp eq i32 %3, %8
  br i1 %9, label %._crit_edge, label %6

._crit_edge:                                      ; preds = %.lr.ph, %6, %2
  %.0 = phi i8 [ 0, %2 ], [ 0, %6 ], [ 1, %.lr.ph ]
  ret i8 %.0
}

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, !7, i64 0}
!6 = !{!"", !7, i64 0, !8, i64 4}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}
!12 = !{!7, !7, i64 0}


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