; LLVM IR from QiaoLiuHit/LSOTB-TIR :: vlfeat-0.9.19/vl/mathop.ll (vl_kernel_l1_d)

; 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
define dso_local double @_vl_kernel_l1_d(i64 noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca double, align 8
  %9 = alloca double, align 8
  %10 = alloca double, align 8
  %11 = alloca double, align 8
  %12 = alloca double, align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %13 = load ptr, ptr %5, align 8, !tbaa !9
  %14 = load i64, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds double, ptr %13, i64 %14
  store ptr %15, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store double 0.000000e+00, ptr %8, align 8, !tbaa !11
  br label %16

16:                                               ; preds = %20, %3
  %17 = load ptr, ptr %5, align 8, !tbaa !9
  %18 = load ptr, ptr %7, align 8, !tbaa !9
  %19 = icmp ult ptr %17, %18
  br i1 %19, label %20, label %41

20:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %21 = load ptr, ptr %5, align 8, !tbaa !9
  %22 = getelementptr inbounds double, ptr %21, i32 1
  store ptr %22, ptr %5, align 8, !tbaa !9
  %23 = load double, ptr %21, align 8, !tbaa !11
  store double %23, ptr %9, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %24 = load ptr, ptr %6, align 8, !tbaa !9
  %25 = getelementptr inbounds double, ptr %24, i32 1
  store ptr %25, ptr %6, align 8, !tbaa !9
  %26 = load double, ptr %24, align 8, !tbaa !11
  store double %26, ptr %10, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #3
  %27 = load double, ptr %9, align 8, !tbaa !11
  %28 = call double @vl_abs_d(double noundef %27)
  store double %28, ptr %11, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #3
  %29 = load double, ptr %10, align 8, !tbaa !11
  %30 = call double @vl_abs_d(double noundef %29)
  store double %30, ptr %12, align 8, !tbaa !11
  %31 = load double, ptr %11, align 8, !tbaa !11
  %32 = load double, ptr %12, align 8, !tbaa !11
  %33 = fadd double %31, %32
  %34 = load double, ptr %9, align 8, !tbaa !11
  %35 = load double, ptr %10, align 8, !tbaa !11
  %36 = fsub double %34, %35
  %37 = call double @vl_abs_d(double noundef %36)
  %38 = fsub double %33, %37
  %39 = load double, ptr %8, align 8, !tbaa !11
  %40 = fadd double %39, %38
  store double %40, ptr %8, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  br label %16, !llvm.loop !13

41:                                               ; preds = %16
  %42 = load double, ptr %8, align 8, !tbaa !11
  %43 = fdiv double %42, 2.000000e+00
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret double %43
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden double @vl_abs_d(double noundef) #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 = { inlinehint 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !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
define dso_local double @_vl_kernel_l1_d(i64 noundef %0, ptr noundef readonly %1, ptr nocapture noundef readonly %2) local_unnamed_addr #0 {
  %4 = getelementptr inbounds double, ptr %1, i64 %0
  %5 = icmp sgt i64 %0, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.017 = phi ptr [ %6, %.lr.ph ], [ %1, %3 ]
  %.01316 = phi ptr [ %8, %.lr.ph ], [ %2, %3 ]
  %.01415 = phi double [ %16, %.lr.ph ], [ 0.000000e+00, %3 ]
  %6 = getelementptr inbounds i8, ptr %.017, i64 8
  %7 = load double, ptr %.017, align 8, !tbaa !5
  %8 = getelementptr inbounds i8, ptr %.01316, i64 8
  %9 = load double, ptr %.01316, align 8, !tbaa !5
  %10 = tail call double @vl_abs_d(double noundef %7)
  %11 = tail call double @vl_abs_d(double noundef %9)
  %12 = fadd double %10, %11
  %13 = fsub double %7, %9
  %14 = tail call double @vl_abs_d(double noundef %13)
  %15 = fsub double %12, %14
  %16 = fadd double %.01415, %15
  %17 = icmp ult ptr %6, %4
  br i1 %17, label %.lr.ph, label %._crit_edge.loopexit, !llvm.loop !9

._crit_edge.loopexit:                             ; preds = %.lr.ph
  %18 = fmul double %16, 5.000000e-01
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %3
  %.014.lcssa = phi double [ 0.000000e+00, %3 ], [ %18, %._crit_edge.loopexit ]
  ret double %.014.lcssa
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden double @vl_abs_d(double noundef) local_unnamed_addr #1

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 = { inlinehint 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, !6, i64 0}
!6 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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