; LLVM IR from IOsonata/IOsonata :: src/coredev (shared_intrf)

; 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.SharedIntrf_t = type { ptr, ptr }

@g_SharedIntrfMaxCnt = external constant i32, align 4
@g_SharedIntrf = external global [0 x %struct.SharedIntrf_t], align 4

; Function Attrs: nounwind uwtable
define dso_local void @SharedIntrfSetIrqHandler(i32 noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !9
  %7 = load i32, ptr %4, align 4, !tbaa !5
  %8 = icmp slt i32 %7, 0
  br i1 %8, label %13, label %9

9:                                                ; preds = %3
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = load i32, ptr @g_SharedIntrfMaxCnt, align 4, !tbaa !5
  %12 = icmp sge i32 %10, %11
  br i1 %12, label %13, label %14

13:                                               ; preds = %9, %3
  br label %25

14:                                               ; preds = %9
  %15 = load ptr, ptr %5, align 8, !tbaa !9
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [0 x %struct.SharedIntrf_t], ptr @g_SharedIntrf, i64 0, i64 %17
  %19 = getelementptr inbounds %struct.SharedIntrf_t, ptr %18, i32 0, i32 0
  store ptr %15, ptr %19, align 4, !tbaa !11
  %20 = load ptr, ptr %6, align 8, !tbaa !9
  %21 = load i32, ptr %4, align 4, !tbaa !5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [0 x %struct.SharedIntrf_t], ptr @g_SharedIntrf, i64 0, i64 %22
  %24 = getelementptr inbounds %struct.SharedIntrf_t, ptr %23, i32 0, i32 1
  store ptr %20, ptr %24, align 4, !tbaa !13
  br label %25

25:                                               ; preds = %14, %13
  ret void
}

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, !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, !10, i64 0}
!12 = !{!"", !10, i64 0, !10, i64 8}
!13 = !{!12, !10, i64 8}


; 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.SharedIntrf_t = type { ptr, ptr }

@g_SharedIntrfMaxCnt = external local_unnamed_addr constant i32, align 4
@g_SharedIntrf = external local_unnamed_addr global [0 x %struct.SharedIntrf_t], align 4

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @SharedIntrfSetIrqHandler(i32 noundef %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = icmp sgt i32 %0, -1
  %5 = load i32, ptr @g_SharedIntrfMaxCnt, align 4
  %.not = icmp sgt i32 %5, %0
  %or.cond = select i1 %4, i1 %.not, i1 false
  br i1 %or.cond, label %6, label %10

6:                                                ; preds = %3
  %7 = zext nneg i32 %0 to i64
  %8 = getelementptr inbounds [0 x %struct.SharedIntrf_t], ptr @g_SharedIntrf, i64 0, i64 %7
  store ptr %1, ptr %8, align 4, !tbaa !5
  %9 = getelementptr inbounds i8, ptr %8, i64 8
  store ptr %2, ptr %9, align 4, !tbaa !10
  br label %10

10:                                               ; preds = %3, %6
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: none, 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, !7, i64 0}
!6 = !{!"", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 8}


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