; LLVM IR from FrancesoM/Bisc8FX :: sdk_projects/bisc8_platform/ps7_cortexa9_0/standalone_domain/bsp/ps7_cortexa9_0_ (GetEventCounters)

; 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"

; Function Attrs: nounwind uwtable
declare dso_local void @Xpm_DisableEventCounters() #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local void @Xpm_GetEventCounters(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  call void @Xpm_DisableEventCounters()
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %19, %1
  %7 = load i32, ptr %3, align 4, !tbaa !9
  %8 = icmp ult i32 %7, 3
  br i1 %8, label %9, label %22

9:                                                ; preds = %6
  %10 = load i32, ptr %3, align 4, !tbaa !9
  call void asm sideeffect "msr XREG_CP15_EVENT_CNTR_SEL,${0:x}", "r,~{dirflag},~{fpsr},~{flags}"(i32 %10) #2, !srcloc !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  store i64 0, ptr %4, align 8, !tbaa !12
  %11 = call i64 asm sideeffect "mrs ${0:x}, XREG_CP15_PERF_MONITOR_COUNT", "=r,~{dirflag},~{fpsr},~{flags}"() #2, !srcloc !14
  store i64 %11, ptr %4, align 8, !tbaa !12
  %12 = load i64, ptr %4, align 8, !tbaa !12
  store i64 %12, ptr %5, align 8, !tbaa !12
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  %13 = load i64, ptr %5, align 8, !tbaa !12
  %14 = trunc i64 %13 to i32
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = load i32, ptr %3, align 4, !tbaa !9
  %17 = zext i32 %16 to i64
  %18 = getelementptr inbounds i32, ptr %15, i64 %17
  store i32 %14, ptr %18, align 4, !tbaa !9
  br label %19

19:                                               ; preds = %9
  %20 = load i32, ptr %3, align 4, !tbaa !9
  %21 = add i32 %20, 1
  store i32 %21, ptr %3, align 4, !tbaa !9
  br label %6, !llvm.loop !15

22:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{i64 2147839041}
!12 = !{!13, !13, i64 0}
!13 = !{!"long", !7, i64 0}
!14 = !{i64 2147839167}
!15 = distinct !{!15, !16}
!16 = !{!"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 void @Xpm_DisableEventCounters() local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @Xpm_GetEventCounters(ptr nocapture noundef writeonly %0) local_unnamed_addr #0 {
  tail call void @Xpm_DisableEventCounters()
  tail call void asm sideeffect "msr XREG_CP15_EVENT_CNTR_SEL,${0:x}", "r,~{dirflag},~{fpsr},~{flags}"(i32 0) #1, !srcloc !5
  %2 = tail call i64 asm sideeffect "mrs ${0:x}, XREG_CP15_PERF_MONITOR_COUNT", "=r,~{dirflag},~{fpsr},~{flags}"() #1, !srcloc !6
  %3 = trunc i64 %2 to i32
  store i32 %3, ptr %0, align 4, !tbaa !7
  tail call void asm sideeffect "msr XREG_CP15_EVENT_CNTR_SEL,${0:x}", "r,~{dirflag},~{fpsr},~{flags}"(i32 1) #1, !srcloc !5
  %4 = tail call i64 asm sideeffect "mrs ${0:x}, XREG_CP15_PERF_MONITOR_COUNT", "=r,~{dirflag},~{fpsr},~{flags}"() #1, !srcloc !6
  %5 = trunc i64 %4 to i32
  %6 = getelementptr inbounds i8, ptr %0, i64 4
  store i32 %5, ptr %6, align 4, !tbaa !7
  tail call void asm sideeffect "msr XREG_CP15_EVENT_CNTR_SEL,${0:x}", "r,~{dirflag},~{fpsr},~{flags}"(i32 2) #1, !srcloc !5
  %7 = tail call i64 asm sideeffect "mrs ${0:x}, XREG_CP15_PERF_MONITOR_COUNT", "=r,~{dirflag},~{fpsr},~{flags}"() #1, !srcloc !6
  %8 = trunc i64 %7 to i32
  %9 = getelementptr inbounds i8, ptr %0, i64 8
  store i32 %8, ptr %9, align 4, !tbaa !7
  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" }
attributes #1 = { 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 = !{i64 2147839041}
!6 = !{i64 2147839167}
!7 = !{!8, !8, i64 0}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass