; LLVM IR from thalium/icebox :: third_party/virtualbox/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Bus/Scsi (ScsiDiskHaveSenseKey)

; 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.EFI_SCSI_SENSE_DATA = type { i8, i8, i8, [4 x i8], i8, [4 x i8], i8, i8, i8, [3 x i8] }

; 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 zeroext i8 @ScsiDiskHaveSenseKey(ptr noundef %0, i64 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i8, align 1
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #2
  %8 = load i64, ptr %4, align 8, !tbaa !9
  %9 = icmp eq i64 %8, 0
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  store i8 0, ptr %7, align 1, !tbaa !11
  br label %12

11:                                               ; preds = %2
  store i8 1, ptr %7, align 1, !tbaa !11
  br label %12

12:                                               ; preds = %11, %10
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %13, ptr %5, align 8, !tbaa !5
  store i64 0, ptr %6, align 8, !tbaa !9
  br label %14

14:                                               ; preds = %32, %12
  %15 = load i64, ptr %6, align 8, !tbaa !9
  %16 = load i64, ptr %4, align 8, !tbaa !9
  %17 = icmp ult i64 %15, %16
  br i1 %17, label %18, label %35

18:                                               ; preds = %14
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.EFI_SCSI_SENSE_DATA, ptr %19, i32 0, i32 2
  %21 = load i8, ptr %20, align 1
  %22 = and i8 %21, 15
  %23 = zext i8 %22 to i32
  %24 = icmp eq i32 %23, 0
  br i1 %24, label %25, label %29

25:                                               ; preds = %18
  %26 = load i64, ptr %6, align 8, !tbaa !9
  %27 = icmp eq i64 %26, 0
  br i1 %27, label %28, label %29

28:                                               ; preds = %25
  store i8 0, ptr %7, align 1, !tbaa !11
  br label %29

29:                                               ; preds = %28, %25, %18
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.EFI_SCSI_SENSE_DATA, ptr %30, i32 1
  store ptr %31, ptr %5, align 8, !tbaa !5
  br label %32

32:                                               ; preds = %29
  %33 = load i64, ptr %6, align 8, !tbaa !9
  %34 = add i64 %33, 1
  store i64 %34, ptr %6, align 8, !tbaa !9
  br label %14, !llvm.loop !12

35:                                               ; preds = %14
  %36 = load i8, ptr %7, align 1, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret i8 %36
}

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 = !{!"long long", !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"

; Function Attrs: nofree norecurse nosync nounwind memory(argmem: read) uwtable
define dso_local zeroext range(i8 0, 2) i8 @ScsiDiskHaveSenseKey(ptr nocapture noundef readonly %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = icmp ne i64 %1, 0
  %. = zext i1 %3 to i8
  %.not = icmp eq i64 %1, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %4 = getelementptr inbounds i8, ptr %0, i64 2
  %5 = load i8, ptr %4, align 1
  %6 = and i8 %5, 15
  %7 = icmp eq i8 %6, 0
  %spec.select.peel = select i1 %7, i8 0, i8 %.
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph.preheader, %2
  %.1.lcssa = phi i8 [ %., %2 ], [ %spec.select.peel, %.lr.ph.preheader ]
  ret i8 %.1.lcssa
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: 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" }

!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)"}


; Effective O3 passes: BDCEPass,CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LoopFullUnrollPass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass