; LLVM IR from moarseniy/CudaFEMproject :: deprecated/Linal2/src/Linal2.ll (ZN7MyArray5CNormEv)

; 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"

%class.MyArray = type { i32, ptr }

; 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: mustprogress uwtable
define dso_local noundef float @_ZN7MyArray5CNormEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca float, align 4
  %4 = alloca i32, align 4
  %5 = alloca float, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %6 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %7 = getelementptr inbounds %class.MyArray, ptr %6, i32 0, i32 1
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = getelementptr inbounds float, ptr %8, i64 0
  %10 = load float, ptr %9, align 4, !tbaa !12
  %11 = call noundef float @_ZSt4fabsf(float noundef %10)
  store float %11, ptr %3, align 4, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 1, ptr %4, align 4, !tbaa !14
  br label %12

12:                                               ; preds = %32, %1
  %13 = load i32, ptr %4, align 4, !tbaa !14
  %14 = getelementptr inbounds %class.MyArray, ptr %6, i32 0, i32 0
  %15 = load i32, ptr %14, align 8, !tbaa !15
  %16 = icmp slt i32 %13, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  br label %35

18:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %19 = getelementptr inbounds %class.MyArray, ptr %6, i32 0, i32 1
  %20 = load ptr, ptr %19, align 8, !tbaa !9
  %21 = load i32, ptr %4, align 4, !tbaa !14
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds float, ptr %20, i64 %22
  %24 = load float, ptr %23, align 4, !tbaa !12
  %25 = call noundef float @_ZSt4fabsf(float noundef %24)
  store float %25, ptr %5, align 4, !tbaa !12
  %26 = load float, ptr %5, align 4, !tbaa !12
  %27 = load float, ptr %3, align 4, !tbaa !12
  %28 = fcmp ogt float %26, %27
  br i1 %28, label %29, label %31

29:                                               ; preds = %18
  %30 = load float, ptr %5, align 4, !tbaa !12
  store float %30, ptr %3, align 4, !tbaa !12
  br label %31

31:                                               ; preds = %29, %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %32

32:                                               ; preds = %31
  %33 = load i32, ptr %4, align 4, !tbaa !14
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %4, align 4, !tbaa !14
  br label %12, !llvm.loop !16

35:                                               ; preds = %17
  %36 = load float, ptr %3, align 4, !tbaa !12
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret float %36
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef float @_ZSt4fabsf(float noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 = { inlinehint 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 }

!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++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"_ZTS7MyArray", !11, i64 0, !6, i64 8}
!11 = !{!"int", !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"float", !7, i64 0}
!14 = !{!11, !11, i64 0}
!15 = !{!10, !11, i64 0}
!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"

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef float @_ZN7MyArray5CNormEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = load float, ptr %3, align 4, !tbaa !11
  %5 = tail call noundef float @_ZSt4fabsf(float noundef %4)
  %6 = load i32, ptr %0, align 8, !tbaa !13
  %7 = icmp sgt i32 %6, 1
  br i1 %7, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %1
  %.0.lcssa = phi float [ %5, %1 ], [ %.1, %.lr.ph ]
  ret float %.0.lcssa

.lr.ph:                                           ; preds = %1, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 1, %1 ]
  %.010 = phi float [ %.1, %.lr.ph ], [ %5, %1 ]
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds float, ptr %8, i64 %indvars.iv
  %10 = load float, ptr %9, align 4, !tbaa !11
  %11 = tail call noundef float @_ZSt4fabsf(float noundef %10)
  %12 = fcmp ogt float %11, %.010
  %.1 = select i1 %12, float %11, float %.010
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %13 = load i32, ptr %0, align 8, !tbaa !13
  %14 = sext i32 %13 to i64
  %15 = icmp slt i64 %indvars.iv.next, %14
  br i1 %15, label %.lr.ph, label %._crit_edge, !llvm.loop !14
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef float @_ZSt4fabsf(float noundef) local_unnamed_addr #1

attributes #0 = { 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 #1 = { inlinehint 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" }

!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, !10, i64 8}
!6 = !{!"_ZTS7MyArray", !7, i64 0, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"float", !8, i64 0}
!13 = !{!6, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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