; LLVM IR from moarseniy/CudaFEMproject :: deprecated/Linal2/src/Linal2.ll (ZN6Matrix6ResizeEii)

; 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.Matrix = type { i32, i32, i8, i8, ptr }

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare { i64, i1 } @llvm.umul.with.overflow.i64(i64, i64) #0

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znam(i64 noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6Matrix6ResizeEii(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1, i32 noundef %2) #3 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  %10 = load ptr, ptr %4, align 8
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = getelementptr inbounds %class.Matrix, ptr %10, i32 0, i32 0
  store i32 %11, ptr %12, align 8, !tbaa !11
  %13 = load i32, ptr %6, align 4, !tbaa !9
  %14 = getelementptr inbounds %class.Matrix, ptr %10, i32 0, i32 1
  store i32 %13, ptr %14, align 4, !tbaa !14
  %15 = load i32, ptr %5, align 4, !tbaa !9
  %16 = load i32, ptr %6, align 4, !tbaa !9
  %17 = mul nsw i32 %15, %16
  %18 = sext i32 %17 to i64
  %19 = call { i64, i1 } @llvm.umul.with.overflow.i64(i64 %18, i64 4)
  %20 = extractvalue { i64, i1 } %19, 1
  %21 = extractvalue { i64, i1 } %19, 0
  %22 = select i1 %20, i64 -1, i64 %21
  %23 = call noalias noundef nonnull ptr @_Znam(i64 noundef %22) #4
  %24 = getelementptr inbounds %class.Matrix, ptr %10, i32 0, i32 4
  store ptr %23, ptr %24, align 8, !tbaa !15
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %25

25:                                               ; preds = %50, %3
  %26 = load i32, ptr %7, align 4, !tbaa !9
  %27 = load i32, ptr %5, align 4, !tbaa !9
  %28 = icmp slt i32 %26, %27
  br i1 %28, label %30, label %29

29:                                               ; preds = %25
  store i32 2, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  br label %53

30:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #5
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %31

31:                                               ; preds = %46, %30
  %32 = load i32, ptr %9, align 4, !tbaa !9
  %33 = load i32, ptr %6, align 4, !tbaa !9
  %34 = icmp slt i32 %32, %33
  br i1 %34, label %36, label %35

35:                                               ; preds = %31
  store i32 5, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  br label %49

36:                                               ; preds = %31
  %37 = getelementptr inbounds %class.Matrix, ptr %10, i32 0, i32 4
  %38 = load ptr, ptr %37, align 8, !tbaa !15
  %39 = load i32, ptr %9, align 4, !tbaa !9
  %40 = load i32, ptr %7, align 4, !tbaa !9
  %41 = load i32, ptr %6, align 4, !tbaa !9
  %42 = mul nsw i32 %40, %41
  %43 = add nsw i32 %39, %42
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds float, ptr %38, i64 %44
  store float 0.000000e+00, ptr %45, align 4, !tbaa !16
  br label %46

46:                                               ; preds = %36
  %47 = load i32, ptr %9, align 4, !tbaa !9
  %48 = add nsw i32 %47, 1
  store i32 %48, ptr %9, align 4, !tbaa !9
  br label %31, !llvm.loop !18

49:                                               ; preds = %35
  br label %50

50:                                               ; preds = %49
  %51 = load i32, ptr %7, align 4, !tbaa !9
  %52 = add nsw i32 %51, 1
  store i32 %52, ptr %7, align 4, !tbaa !9
  br label %25, !llvm.loop !20

53:                                               ; preds = %29
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #1 = { nobuiltin allocsize(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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { builtin allocsize(0) }
attributes #5 = { 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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"_ZTS6Matrix", !10, i64 0, !10, i64 4, !13, i64 8, !13, i64 9, !6, i64 16}
!13 = !{!"bool", !7, i64 0}
!14 = !{!12, !10, i64 4}
!15 = !{!12, !6, i64 16}
!16 = !{!17, !17, i64 0}
!17 = !{!"float", !7, i64 0}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.mustprogress"}
!20 = distinct !{!20, !19}


; 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: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znam(i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6Matrix6ResizeEii(ptr nocapture noundef nonnull writeonly align 8 dereferenceable(24) %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #1 align 2 {
  store i32 %1, ptr %0, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 4
  store i32 %2, ptr %4, align 4, !tbaa !12
  %5 = mul nsw i32 %2, %1
  %6 = zext nneg i32 %5 to i64
  %7 = icmp slt i32 %5, 0
  %8 = shl nuw nsw i64 %6, 2
  %9 = select i1 %7, i64 -1, i64 %8
  %10 = tail call noalias noundef nonnull ptr @_Znam(i64 noundef %9) #3
  %11 = getelementptr inbounds i8, ptr %0, i64 16
  store ptr %10, ptr %11, align 8, !tbaa !13
  %12 = icmp sgt i32 %1, 0
  %13 = icmp sgt i32 %2, 0
  %or.cond = and i1 %12, %13
  br i1 %or.cond, label %.preheader.us.preheader, label %._crit_edge17

.preheader.us.preheader:                          ; preds = %3
  %14 = zext nneg i32 %2 to i64
  %15 = zext nneg i32 %1 to i64
  %16 = mul nuw nsw i64 %14, %15
  %17 = shl nuw i64 %16, 2
  tail call void @llvm.memset.p0.i64(ptr nonnull align 4 %10, i8 0, i64 %17, i1 false), !tbaa !14
  br label %._crit_edge17

._crit_edge17:                                    ; preds = %.preheader.us.preheader, %3
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

attributes #0 = { nobuiltin allocsize(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 = { 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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { builtin allocsize(0) }

!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 = !{!"_ZTS6Matrix", !7, i64 0, !7, i64 4, !10, i64 8, !10, i64 9, !11, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"bool", !8, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!6, !7, i64 4}
!13 = !{!6, !11, i64 16}
!14 = !{!15, !15, i64 0}
!15 = !{!"float", !8, i64 0}


; Effective O3 passes: BDCEPass,CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopIdiomRecognizePass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,PostOrderFunctionAttrsPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass