; LLVM IR from TobiasKozel/VAE :: external/portaudio/src/common (pa_front)

; 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.PaUtilHostApiRepresentation = type { %struct.PaUtilPrivatePaFrontHostApiInfo, %struct.PaHostApiInfo, ptr, ptr, ptr, ptr }
%struct.PaUtilPrivatePaFrontHostApiInfo = type { i64 }
%struct.PaHostApiInfo = type { i32, i32, ptr, i32, i32, i32 }

@initializationCount_ = external hidden global i32, align 4
@hostApisCount_ = external hidden global i32, align 4
@hostApis_ = external hidden global ptr, align 8

; 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 i32 @PaUtil_GetHostApiRepresentation(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %7 = load i32, ptr @initializationCount_, align 4, !tbaa !9
  %8 = icmp ne i32 %7, 0
  br i1 %8, label %10, label %9

9:                                                ; preds = %2
  store i32 -10000, ptr %5, align 4, !tbaa !9
  br label %38

10:                                               ; preds = %2
  store i32 -9979, ptr %5, align 4, !tbaa !9
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %34, %10
  %12 = load i32, ptr %6, align 4, !tbaa !9
  %13 = load i32, ptr @hostApisCount_, align 4, !tbaa !9
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %15, label %37

15:                                               ; preds = %11
  %16 = load ptr, ptr @hostApis_, align 8, !tbaa !5
  %17 = load i32, ptr %6, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds ptr, ptr %16, i64 %18
  %20 = load ptr, ptr %19, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.PaUtilHostApiRepresentation, ptr %20, i32 0, i32 1
  %22 = getelementptr inbounds %struct.PaHostApiInfo, ptr %21, i32 0, i32 1
  %23 = load i32, ptr %22, align 4, !tbaa !11
  %24 = load i32, ptr %4, align 4, !tbaa !9
  %25 = icmp eq i32 %23, %24
  br i1 %25, label %26, label %33

26:                                               ; preds = %15
  %27 = load ptr, ptr @hostApis_, align 8, !tbaa !5
  %28 = load i32, ptr %6, align 4, !tbaa !9
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds ptr, ptr %27, i64 %29
  %31 = load ptr, ptr %30, align 8, !tbaa !5
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %31, ptr %32, align 8, !tbaa !5
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %37

33:                                               ; preds = %15
  br label %34

34:                                               ; preds = %33
  %35 = load i32, ptr %6, align 4, !tbaa !9
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %6, align 4, !tbaa !9
  br label %11, !llvm.loop !16

37:                                               ; preds = %26, %11
  br label %38

38:                                               ; preds = %37, %9
  %39 = load i32, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 %39
}

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 12}
!12 = !{!"PaUtilHostApiRepresentation", !13, i64 0, !15, i64 8, !6, i64 40, !6, i64 48, !6, i64 56, !6, i64 64}
!13 = !{!"PaUtilPrivatePaFrontHostApiInfo", !14, i64 0}
!14 = !{!"long", !7, i64 0}
!15 = !{!"PaHostApiInfo", !10, i64 0, !10, i64 4, !6, i64 8, !10, i64 16, !10, i64 20, !10, i64 24}
!16 = distinct !{!16, !17}
!17 = !{!"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"

@initializationCount_ = external hidden local_unnamed_addr global i32, align 4
@hostApisCount_ = external hidden local_unnamed_addr global i32, align 4
@hostApis_ = external hidden local_unnamed_addr global ptr, align 8

; Function Attrs: nofree norecurse nosync nounwind memory(read, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local range(i32 -10000, 1) i32 @PaUtil_GetHostApiRepresentation(ptr nocapture noundef writeonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = load i32, ptr @initializationCount_, align 4, !tbaa !5
  %.not = icmp eq i32 %3, 0
  br i1 %.not, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %2
  %4 = load i32, ptr @hostApisCount_, align 4, !tbaa !5
  %5 = icmp sgt i32 %4, 0
  br i1 %5, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %.preheader
  %6 = load ptr, ptr @hostApis_, align 8, !tbaa !9
  %wide.trip.count = zext nneg i32 %4 to i64
  br label %8

7:                                                ; preds = %8
  %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 %.loopexit, label %8, !llvm.loop !11

8:                                                ; preds = %.lr.ph, %7
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %7 ]
  %9 = getelementptr inbounds ptr, ptr %6, i64 %indvars.iv
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = getelementptr inbounds i8, ptr %10, i64 12
  %12 = load i32, ptr %11, align 4, !tbaa !13
  %13 = icmp eq i32 %12, %1
  br i1 %13, label %14, label %7

14:                                               ; preds = %8
  store ptr %10, ptr %0, align 8, !tbaa !9
  br label %.loopexit

.loopexit:                                        ; preds = %7, %.preheader, %2, %14
  %.06 = phi i32 [ 0, %14 ], [ -10000, %2 ], [ -9979, %.preheader ], [ -9979, %7 ]
  ret i32 %.06
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, argmem: readwrite, 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, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!14, !6, i64 12}
!14 = !{!"PaUtilHostApiRepresentation", !15, i64 0, !17, i64 8, !10, i64 40, !10, i64 48, !10, i64 56, !10, i64 64}
!15 = !{!"PaUtilPrivatePaFrontHostApiInfo", !16, i64 0}
!16 = !{!"long", !7, i64 0}
!17 = !{!"PaHostApiInfo", !6, i64 0, !6, i64 4, !10, i64 8, !6, i64 16, !6, i64 20, !6, i64 24}


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