; LLVM IR from moarseniy/CudaFEMproject :: FEMproject/thirdparty/segyio2/src (segy)

; 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: 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: nounwind uwtable
declare dso_local i32 @segy_sample_interval(ptr noundef, float noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @segy_sample_indices(ptr noundef %0, float noundef %1, float noundef %2, i32 noundef %3, ptr noundef %4) #1 {
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca float, align 4
  %9 = alloca float, align 4
  %10 = alloca i32, align 4
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  store ptr %0, ptr %7, align 8, !tbaa !5
  store float %1, ptr %8, align 4, !tbaa !9
  store float %2, ptr %9, align 4, !tbaa !9
  store i32 %3, ptr %10, align 4, !tbaa !11
  store ptr %4, ptr %11, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  %15 = load ptr, ptr %7, align 8, !tbaa !5
  %16 = load float, ptr %9, align 4, !tbaa !9
  %17 = call i32 @segy_sample_interval(ptr noundef %15, float noundef %16, ptr noundef %9)
  store i32 %17, ptr %12, align 4, !tbaa !11
  %18 = load i32, ptr %12, align 4, !tbaa !11
  %19 = icmp ne i32 %18, 0
  br i1 %19, label %20, label %22

20:                                               ; preds = %5
  %21 = load i32, ptr %12, align 4, !tbaa !11
  store i32 %21, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %42

22:                                               ; preds = %5
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #3
  store i32 0, ptr %14, align 4, !tbaa !11
  br label %23

23:                                               ; preds = %38, %22
  %24 = load i32, ptr %14, align 4, !tbaa !11
  %25 = load i32, ptr %10, align 4, !tbaa !11
  %26 = icmp slt i32 %24, %25
  br i1 %26, label %28, label %27

27:                                               ; preds = %23
  store i32 2, ptr %13, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #3
  br label %41

28:                                               ; preds = %23
  %29 = load float, ptr %8, align 4, !tbaa !9
  %30 = load i32, ptr %14, align 4, !tbaa !11
  %31 = sitofp i32 %30 to float
  %32 = load float, ptr %9, align 4, !tbaa !9
  %33 = call float @llvm.fmuladd.f32(float %31, float %32, float %29)
  %34 = load ptr, ptr %11, align 8, !tbaa !5
  %35 = load i32, ptr %14, align 4, !tbaa !11
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds float, ptr %34, i64 %36
  store float %33, ptr %37, align 4, !tbaa !9
  br label %38

38:                                               ; preds = %28
  %39 = load i32, ptr %14, align 4, !tbaa !11
  %40 = add nsw i32 %39, 1
  store i32 %40, ptr %14, align 4, !tbaa !11
  br label %23, !llvm.loop !13

41:                                               ; preds = %27
  store i32 0, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %42

42:                                               ; preds = %41, %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  %43 = load i32, ptr %6, align 4
  ret i32 %43
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"float", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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 i32 @segy_sample_interval(ptr noundef, float noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i32 @segy_sample_indices(ptr noundef %0, float noundef %1, float noundef %2, i32 noundef %3, ptr nocapture noundef writeonly %4) local_unnamed_addr #0 {
  %6 = alloca float, align 4
  store float %2, ptr %6, align 4, !tbaa !5
  %7 = call i32 @segy_sample_interval(ptr noundef %0, float noundef %2, ptr noundef nonnull %6)
  %.not = icmp eq i32 %7, 0
  br i1 %.not, label %.preheader, label %.loopexit

.preheader:                                       ; preds = %5
  %8 = icmp sgt i32 %3, 0
  br i1 %8, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %.preheader
  %9 = load float, ptr %6, align 4, !tbaa !5
  %wide.trip.count = zext nneg i32 %3 to i64
  %min.iters.check = icmp ult i32 %3, 8
  br i1 %min.iters.check, label %scalar.ph.preheader, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph
  %n.vec = and i64 %wide.trip.count, 2147483640
  %broadcast.splatinsert = insertelement <4 x float> poison, float %9, i64 0
  %broadcast.splat = shufflevector <4 x float> %broadcast.splatinsert, <4 x float> poison, <4 x i32> zeroinitializer
  %broadcast.splatinsert15 = insertelement <4 x float> poison, float %1, i64 0
  %broadcast.splat16 = shufflevector <4 x float> %broadcast.splatinsert15, <4 x float> poison, <4 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vec.ind = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %vector.ph ], [ %vec.ind.next, %vector.body ]
  %step.add = add <4 x i32> %vec.ind, <i32 4, i32 4, i32 4, i32 4>
  %10 = uitofp <4 x i32> %vec.ind to <4 x float>
  %11 = uitofp <4 x i32> %step.add to <4 x float>
  %12 = call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %10, <4 x float> %broadcast.splat, <4 x float> %broadcast.splat16)
  %13 = call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %11, <4 x float> %broadcast.splat, <4 x float> %broadcast.splat16)
  %14 = getelementptr inbounds float, ptr %4, i64 %index
  %15 = getelementptr inbounds i8, ptr %14, i64 16
  store <4 x float> %12, ptr %14, align 4, !tbaa !5
  store <4 x float> %13, ptr %15, align 4, !tbaa !5
  %index.next = add nuw i64 %index, 8
  %vec.ind.next = add <4 x i32> %vec.ind, <i32 8, i32 8, i32 8, i32 8>
  %16 = icmp eq i64 %index.next, %n.vec
  br i1 %16, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %.loopexit, label %scalar.ph.preheader

scalar.ph.preheader:                              ; preds = %middle.block, %.lr.ph
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph ], [ %n.vec, %middle.block ]
  br label %scalar.ph

scalar.ph:                                        ; preds = %scalar.ph.preheader, %scalar.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %scalar.ph ], [ %indvars.iv.ph, %scalar.ph.preheader ]
  %17 = trunc nuw nsw i64 %indvars.iv to i32
  %18 = uitofp nneg i32 %17 to float
  %19 = call float @llvm.fmuladd.f32(float %18, float %9, float %1)
  %20 = getelementptr inbounds float, ptr %4, i64 %indvars.iv
  store float %19, ptr %20, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %.loopexit, label %scalar.ph, !llvm.loop !13

.loopexit:                                        ; preds = %scalar.ph, %middle.block, %.preheader, %5
  %.010 = phi i32 [ %7, %5 ], [ 0, %.preheader ], [ 0, %middle.block ], [ 0, %scalar.ph ]
  ret i32 %.010
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare <4 x float> @llvm.fmuladd.v4f32(<4 x float>, <4 x float>, <4 x float>) #2

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 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10, !12, !11}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass