; LLVM IR from introlab/odas :: src/utils (gaussian)

; 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.gaussians_1d_obj = 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: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #1

; 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
declare dso_local ptr @gaussian_1d_construct_gaussian(ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local ptr @gaussians_1d_construct_gaussians(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %5 = call noalias ptr @malloc(i64 noundef 16) #4
  store ptr %5, ptr %3, align 8, !tbaa !5
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.gaussians_1d_obj, ptr %6, i32 0, i32 0
  %8 = load i32, ptr %7, align 8, !tbaa !9
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.gaussians_1d_obj, ptr %9, i32 0, i32 0
  store i32 %8, ptr %10, align 8, !tbaa !9
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.gaussians_1d_obj, ptr %11, i32 0, i32 0
  %13 = load i32, ptr %12, align 8, !tbaa !9
  %14 = zext i32 %13 to i64
  %15 = mul i64 8, %14
  %16 = call noalias ptr @malloc(i64 noundef %15) #4
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.gaussians_1d_obj, ptr %17, i32 0, i32 1
  store ptr %16, ptr %18, align 8, !tbaa !12
  store i32 0, ptr %4, align 4, !tbaa !13
  br label %19

19:                                               ; preds = %40, %1
  %20 = load i32, ptr %4, align 4, !tbaa !13
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.gaussians_1d_obj, ptr %21, i32 0, i32 0
  %23 = load i32, ptr %22, align 8, !tbaa !9
  %24 = icmp ult i32 %20, %23
  br i1 %24, label %25, label %43

25:                                               ; preds = %19
  %26 = load ptr, ptr %2, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.gaussians_1d_obj, ptr %26, i32 0, i32 1
  %28 = load ptr, ptr %27, align 8, !tbaa !12
  %29 = load i32, ptr %4, align 4, !tbaa !13
  %30 = zext i32 %29 to i64
  %31 = getelementptr inbounds ptr, ptr %28, i64 %30
  %32 = load ptr, ptr %31, align 8, !tbaa !5
  %33 = call ptr @gaussian_1d_construct_gaussian(ptr noundef %32)
  %34 = load ptr, ptr %3, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.gaussians_1d_obj, ptr %34, i32 0, i32 1
  %36 = load ptr, ptr %35, align 8, !tbaa !12
  %37 = load i32, ptr %4, align 4, !tbaa !13
  %38 = zext i32 %37 to i64
  %39 = getelementptr inbounds ptr, ptr %36, i64 %38
  store ptr %33, ptr %39, align 8, !tbaa !5
  br label %40

40:                                               ; preds = %25
  %41 = load i32, ptr %4, align 4, !tbaa !13
  %42 = add i32 %41, 1
  store i32 %42, ptr %4, align 4, !tbaa !13
  br label %19, !llvm.loop !14

43:                                               ; preds = %19
  %44 = load ptr, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret ptr %44
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind 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 = { 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 }
attributes #4 = { nounwind 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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"gaussians_1d_obj", !11, i64 0, !6, i64 8}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !6, i64 8}
!13 = !{!11, !11, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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 nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local ptr @gaussian_1d_construct_gaussian(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local noalias noundef ptr @gaussians_1d_construct_gaussians(ptr nocapture noundef readonly %0) local_unnamed_addr #1 {
  %2 = tail call noalias dereferenceable_or_null(16) ptr @malloc(i64 noundef 16) #2
  %3 = load i32, ptr %0, align 8, !tbaa !5
  store i32 %3, ptr %2, align 8, !tbaa !5
  %4 = zext i32 %3 to i64
  %5 = shl nuw nsw i64 %4, 3
  %6 = tail call noalias ptr @malloc(i64 noundef %5) #2
  %7 = getelementptr inbounds i8, ptr %2, i64 8
  store ptr %6, ptr %7, align 8, !tbaa !11
  %.not = icmp eq i32 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1
  %8 = getelementptr inbounds i8, ptr %0, i64 8
  br label %9

9:                                                ; preds = %.lr.ph, %9
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %9 ]
  %10 = load ptr, ptr %8, align 8, !tbaa !11
  %11 = getelementptr inbounds ptr, ptr %10, i64 %indvars.iv
  %12 = load ptr, ptr %11, align 8, !tbaa !12
  %13 = tail call ptr @gaussian_1d_construct_gaussian(ptr noundef %12)
  %14 = getelementptr inbounds ptr, ptr %6, i64 %indvars.iv
  store ptr %13, ptr %14, align 8, !tbaa !12
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %15 = load i32, ptr %0, align 8, !tbaa !5
  %16 = zext i32 %15 to i64
  %17 = icmp ult i64 %indvars.iv.next, %16
  br i1 %17, label %9, label %._crit_edge, !llvm.loop !13

._crit_edge:                                      ; preds = %9, %1
  ret ptr %2
}

attributes #0 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 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 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 = !{!"gaussians_1d_obj", !7, i64 0, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!10, !10, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


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