; LLVM IR from CerebusOSS/CereLink :: cbhwlib/cbHwlibHi.ll (Z21cbGetNTrodeInstrumentjj)

; 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.cbCFGBUFF = type <{ i32, i32, %struct.cbOPTIONTABLE, %struct.cbCOLORTABLE, %struct.cbPKT_SYSINFO, [3 x %struct.cbPKT_PROCINFO], [3 x [22 x %struct.cbPKT_BANKINFO]], [3 x [8 x %struct.cbPKT_GROUPINFO]], [3 x [32 x %struct.cbPKT_FILTINFO]], [3 x %struct.cbPKT_ADAPTFILTINFO], [3 x %struct.cbPKT_REFELECFILTINFO], [596 x %struct.cbPKT_CHANINFO], %struct.cbSPIKE_SORTING, [280 x %struct.cbPKT_NTRODEINFO], [18 x [5 x %struct.cbPKT_AOUT_WAVEFORM]], [3 x %struct.cbPKT_LNC], %struct.cbPKT_NPLAY, [1 x %struct.cbVIDEOSOURCE], [20 x %struct.cbTRACKOBJ], %struct.cbPKT_FILECFG, ptr }>
%struct.cbOPTIONTABLE = type { float, [31 x i32] }
%struct.cbCOLORTABLE = type { [48 x i32], i32, i32, i32, i32, i32, i32, i32, i32, i32, [16 x i32], i32, [3 x i32], [5 x i32], [14 x i32] }
%struct.cbPKT_SYSINFO = type { %struct.cbPKT_HEADER, i32, i32, i32, i32, i32, i32 }
%struct.cbPKT_HEADER = type { i64, i16, i16, i16, i8, i8 }
%struct.cbPKT_PROCINFO = type { %struct.cbPKT_HEADER, i32, i32, [64 x i8], i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }
%struct.cbPKT_BANKINFO = type <{ %struct.cbPKT_HEADER, i32, i32, i32, [64 x i8], [16 x i8], i32, i32 }>
%struct.cbPKT_GROUPINFO = type { %struct.cbPKT_HEADER, i32, i32, [16 x i8], i32, i32, [560 x i16] }
%struct.cbPKT_FILTINFO = type { %struct.cbPKT_HEADER, i32, i32, [16 x i8], i32, i32, i32, i32, i32, i32, double, double, double, double, double, double, double, double, double }
%struct.cbPKT_ADAPTFILTINFO = type <{ %struct.cbPKT_HEADER, i32, i32, float, i32, i32 }>
%struct.cbPKT_REFELECFILTINFO = type <{ %struct.cbPKT_HEADER, i32, i32, i32 }>
%struct.cbPKT_CHANINFO = type { %struct.cbPKT_HEADER, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, %struct.cbSCALING, %struct.cbFILTDESC, %struct.cbSCALING, %struct.cbFILTDESC, [16 x i8], i32, [4 x i32], %struct.cbSCALING, %struct.cbSCALING, i32, i32, i32, i32, %union.anon, i8, [2 x i8], i8, i16, i16, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i16, i16, i32, [5 x %struct.cbMANUALUNITMAPPING], [5 x [4 x %struct.cbHOOP]] }
%struct.cbFILTDESC = type { [16 x i8], i32, i32, i32, i32, i32, i32 }
%struct.cbSCALING = type { i16, i16, i32, i32, i32, [8 x i8] }
%union.anon = type { %struct.anon }
%struct.anon = type { i16, i16, i32 }
%struct.cbMANUALUNITMAPPING = type { i16, [3 x i16], [3 x [3 x i16]], i16, i32 }
%struct.cbHOOP = type { i16, i16, i16, i16 }
%struct.cbSPIKE_SORTING = type { [596 x %struct.cbPKT_FS_BASIS], [596 x [7 x %struct.cbPKT_SS_MODELSET]], %struct.cbPKT_SS_DETECT, %struct.cbPKT_SS_ARTIF_REJECT, [596 x %struct.cbPKT_SS_NOISE_BOUNDARY], %struct.cbPKT_SS_STATISTICS, %struct.cbPKT_SS_STATUS }
%struct.cbPKT_FS_BASIS = type <{ %struct.cbPKT_HEADER, i32, i32, i32, [128 x [3 x float]] }>
%struct.cbPKT_SS_MODELSET = type <{ %struct.cbPKT_HEADER, i32, i32, i32, i32, i32, [2 x float], [2 x [2 x float]], float, [2 x [2 x float]], float, float, float, float, float }>
%struct.cbPKT_SS_DETECT = type { %struct.cbPKT_HEADER, float, float }
%struct.cbPKT_SS_ARTIF_REJECT = type { %struct.cbPKT_HEADER, i32, i32 }
%struct.cbPKT_SS_NOISE_BOUNDARY = type <{ %struct.cbPKT_HEADER, i32, [3 x float], [3 x [3 x float]] }>
%struct.cbPKT_SS_STATISTICS = type { %struct.cbPKT_HEADER, i32, i32, i32, float, float, float, float, float, float, float, i32, i32 }
%struct.cbPKT_SS_STATUS = type { %struct.cbPKT_HEADER, %struct.cbAdaptControl, %struct.cbAdaptControl }
%struct.cbAdaptControl = type { i32, float, float }
%struct.cbPKT_NTRODEINFO = type { %struct.cbPKT_HEADER, i32, [16 x i8], [6 x [5 x %struct.cbMANUALUNITMAPPING]], i16, i16, [4 x i16] }
%struct.cbPKT_AOUT_WAVEFORM = type { %struct.cbPKT_HEADER, i16, i16, i32, i8, i8, i16, i16, i8, i8, %struct.cbWaveformData }
%struct.cbWaveformData = type { i16, %union.anon.1 }
%union.anon.1 = type { %struct.anon.3 }
%struct.anon.3 = type { i16, i16, i16, [246 x i16], [246 x i16] }
%struct.cbPKT_LNC = type <{ %struct.cbPKT_HEADER, i32, i32, i32 }>
%struct.cbPKT_NPLAY = type { %struct.cbPKT_HEADER, %union.anon.4, i64, i64, i64, i16, i16, float, [968 x i8] }
%union.anon.4 = type { i64 }
%struct.cbVIDEOSOURCE = type { [16 x i8], float }
%struct.cbTRACKOBJ = type { [16 x i8], i16, i16 }
%struct.cbPKT_FILECFG = type { %struct.cbPKT_HEADER, i32, i32, i32, i32, [256 x i8], %union.anon.5, [256 x i8] }
%union.anon.5 = type { [256 x i8] }

@.str.2 = external hidden unnamed_addr constant [75 x i8], align 1
@cb_library_index = external global [4 x i32], align 16
@cb_cfg_buffer_ptr = external global [4 x ptr], align 16
@.str.20 = external hidden unnamed_addr constant [29 x i8], align 1
@__PRETTY_FUNCTION__._Z21cbGetNTrodeInstrumentjj = external hidden unnamed_addr constant [51 x i8], align 1

; 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: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z21cbGetNTrodeInstrumentjj(i32 noundef %0, i32 noundef %1) #2 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 1, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %7 = load i32, ptr %4, align 4, !tbaa !5
  %8 = zext i32 %7 to i64
  %9 = getelementptr inbounds [4 x i32], ptr @cb_library_index, i64 0, i64 %8
  %10 = load i32, ptr %9, align 4, !tbaa !5
  store i32 %10, ptr %6, align 4, !tbaa !5
  %11 = load i32, ptr %6, align 4, !tbaa !5
  %12 = zext i32 %11 to i64
  %13 = getelementptr inbounds [4 x ptr], ptr @cb_cfg_buffer_ptr, i64 0, i64 %12
  %14 = load ptr, ptr %13, align 8, !tbaa !9
  %15 = getelementptr inbounds %struct.cbCFGBUFF, ptr %14, i32 0, i32 13
  %16 = load i32, ptr %3, align 4, !tbaa !5
  %17 = sub i32 %16, 1
  %18 = zext i32 %17 to i64
  %19 = getelementptr inbounds [280 x %struct.cbPKT_NTRODEINFO], ptr %15, i64 0, i64 %18
  %20 = getelementptr inbounds %struct.cbPKT_NTRODEINFO, ptr %19, i32 0, i32 0
  %21 = getelementptr inbounds %struct.cbPKT_HEADER, ptr %20, i32 0, i32 4
  %22 = load i8, ptr %21, align 1, !tbaa !11
  %23 = zext i8 %22 to i32
  %24 = icmp slt i32 %23, 3
  br i1 %24, label %25, label %40

25:                                               ; preds = %2
  %26 = load i32, ptr %6, align 4, !tbaa !5
  %27 = zext i32 %26 to i64
  %28 = getelementptr inbounds [4 x ptr], ptr @cb_cfg_buffer_ptr, i64 0, i64 %27
  %29 = load ptr, ptr %28, align 8, !tbaa !9
  %30 = getelementptr inbounds %struct.cbCFGBUFF, ptr %29, i32 0, i32 13
  %31 = load i32, ptr %3, align 4, !tbaa !5
  %32 = sub i32 %31, 1
  %33 = zext i32 %32 to i64
  %34 = getelementptr inbounds [280 x %struct.cbPKT_NTRODEINFO], ptr %30, i64 0, i64 %33
  %35 = getelementptr inbounds %struct.cbPKT_NTRODEINFO, ptr %34, i32 0, i32 0
  %36 = getelementptr inbounds %struct.cbPKT_HEADER, ptr %35, i32 0, i32 4
  %37 = load i8, ptr %36, align 1, !tbaa !11
  %38 = zext i8 %37 to i32
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %5, align 4, !tbaa !5
  br label %40

40:                                               ; preds = %25, %2
  %41 = load i32, ptr %5, align 4, !tbaa !5
  %42 = sub i32 %41, 1
  %43 = icmp ult i32 %42, 3
  br i1 %43, label %44, label %45

44:                                               ; preds = %40
  br label %47

45:                                               ; preds = %40
  call void @__assert_fail(ptr noundef @.str.20, ptr noundef @.str.2, i32 noundef 962, ptr noundef @__PRETTY_FUNCTION__._Z21cbGetNTrodeInstrumentjj) #4
  unreachable

46:                                               ; No predecessors!
  br label %47

47:                                               ; preds = %46, %44
  %48 = load i32, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  ret i32 %48
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { noreturn nounwind "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 = { 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 #3 = { nounwind }
attributes #4 = { noreturn 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !7, i64 14}
!12 = !{!"_ZTS16cbPKT_NTRODEINFO", !13, i64 0, !6, i64 16, !7, i64 20, !7, i64 36, !15, i64 996, !15, i64 998, !7, i64 1000}
!13 = !{!"_ZTS12cbPKT_HEADER", !14, i64 0, !15, i64 8, !15, i64 10, !15, i64 12, !7, i64 14, !7, i64 15}
!14 = !{!"long", !7, i64 0}
!15 = !{!"short", !7, i64 0}


; 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.cbPKT_NTRODEINFO = type { %struct.cbPKT_HEADER, i32, [16 x i8], [6 x [5 x %struct.cbMANUALUNITMAPPING]], i16, i16, [4 x i16] }
%struct.cbPKT_HEADER = type { i64, i16, i16, i16, i8, i8 }
%struct.cbMANUALUNITMAPPING = type { i16, [3 x i16], [3 x [3 x i16]], i16, i32 }

@cb_library_index = external local_unnamed_addr global [4 x i32], align 16
@cb_cfg_buffer_ptr = external local_unnamed_addr global [4 x ptr], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local noundef range(i32 1, 4) i32 @_Z21cbGetNTrodeInstrumentjj(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = zext i32 %1 to i64
  %4 = getelementptr inbounds [4 x i32], ptr @cb_library_index, i64 0, i64 %3
  %5 = load i32, ptr %4, align 4, !tbaa !5
  %6 = zext i32 %5 to i64
  %7 = getelementptr inbounds [4 x ptr], ptr @cb_cfg_buffer_ptr, i64 0, i64 %6
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = getelementptr inbounds i8, ptr %8, i64 1845184
  %10 = add i32 %0, -1
  %11 = zext i32 %10 to i64
  %12 = getelementptr inbounds [280 x %struct.cbPKT_NTRODEINFO], ptr %9, i64 0, i64 %11, i32 0, i32 4
  %13 = load i8, ptr %12, align 1, !tbaa !11
  %14 = icmp ult i8 %13, 3
  %narrow = add nuw nsw i8 %13, 1
  %narrow8 = select i1 %14, i8 %narrow, i8 1
  %.0 = zext i8 %narrow8 to i32
  ret i32 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !7, i64 14}
!12 = !{!"_ZTS16cbPKT_NTRODEINFO", !13, i64 0, !6, i64 16, !7, i64 20, !7, i64 36, !15, i64 996, !15, i64 998, !7, i64 1000}
!13 = !{!"_ZTS12cbPKT_HEADER", !14, i64 0, !15, i64 8, !15, i64 10, !15, i64 12, !7, i64 14, !7, i64 15}
!14 = !{!"long", !7, i64 0}
!15 = !{!"short", !7, i64 0}


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