; LLVM IR from MRPT/mrpt :: 3rdparty/xspublic/xstypes (xsportinfo)

; 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.XsPortInfo = type { %struct.XsDeviceId, [256 x i8], i32, i32, i16, i16 }
%struct.XsDeviceId = type { i64, [24 x i8], i16, i32 }

; 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 void @XsPortInfo_swap(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i8, align 1
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.XsPortInfo, ptr %9, i32 0, i32 2
  %11 = load i32, ptr %10, align 8, !tbaa !9
  store i32 %11, ptr %8, align 4, !tbaa !15
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.XsPortInfo, ptr %12, i32 0, i32 2
  %14 = load i32, ptr %13, align 8, !tbaa !9
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.XsPortInfo, ptr %15, i32 0, i32 2
  store i32 %14, ptr %16, align 8, !tbaa !9
  %17 = load i32, ptr %8, align 4, !tbaa !15
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.XsPortInfo, ptr %18, i32 0, i32 2
  store i32 %17, ptr %19, align 8, !tbaa !9
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.XsPortInfo, ptr %20, i32 0, i32 0
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.XsPortInfo, ptr %22, i32 0, i32 0
  call void @XsDeviceId_swap(ptr noundef %21, ptr noundef %23)
  store i32 0, ptr %5, align 4, !tbaa !15
  br label %24

24:                                               ; preds = %51, %2
  %25 = load i32, ptr %5, align 4, !tbaa !15
  %26 = icmp slt i32 %25, 256
  br i1 %26, label %27, label %54

27:                                               ; preds = %24
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.XsPortInfo, ptr %28, i32 0, i32 1
  %30 = load i32, ptr %5, align 4, !tbaa !15
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [256 x i8], ptr %29, i64 0, i64 %31
  %33 = load i8, ptr %32, align 1, !tbaa !16
  store i8 %33, ptr %6, align 1, !tbaa !16
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.XsPortInfo, ptr %34, i32 0, i32 1
  %36 = load i32, ptr %5, align 4, !tbaa !15
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds [256 x i8], ptr %35, i64 0, i64 %37
  %39 = load i8, ptr %38, align 1, !tbaa !16
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.XsPortInfo, ptr %40, i32 0, i32 1
  %42 = load i32, ptr %5, align 4, !tbaa !15
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds [256 x i8], ptr %41, i64 0, i64 %43
  store i8 %39, ptr %44, align 1, !tbaa !16
  %45 = load i8, ptr %6, align 1, !tbaa !16
  %46 = load ptr, ptr %4, align 8, !tbaa !5
  %47 = getelementptr inbounds %struct.XsPortInfo, ptr %46, i32 0, i32 1
  %48 = load i32, ptr %5, align 4, !tbaa !15
  %49 = sext i32 %48 to i64
  %50 = getelementptr inbounds [256 x i8], ptr %47, i64 0, i64 %49
  store i8 %45, ptr %50, align 1, !tbaa !16
  br label %51

51:                                               ; preds = %27
  %52 = load i32, ptr %5, align 4, !tbaa !15
  %53 = add nsw i32 %52, 1
  store i32 %53, ptr %5, align 4, !tbaa !15
  br label %24, !llvm.loop !17

54:                                               ; preds = %24
  %55 = load ptr, ptr %3, align 8, !tbaa !5
  %56 = getelementptr inbounds %struct.XsPortInfo, ptr %55, i32 0, i32 3
  %57 = load i32, ptr %56, align 4, !tbaa !19
  store i32 %57, ptr %7, align 4, !tbaa !15
  %58 = load ptr, ptr %4, align 8, !tbaa !5
  %59 = getelementptr inbounds %struct.XsPortInfo, ptr %58, i32 0, i32 3
  %60 = load i32, ptr %59, align 4, !tbaa !19
  %61 = load ptr, ptr %3, align 8, !tbaa !5
  %62 = getelementptr inbounds %struct.XsPortInfo, ptr %61, i32 0, i32 3
  store i32 %60, ptr %62, align 4, !tbaa !19
  %63 = load i32, ptr %7, align 4, !tbaa !15
  %64 = load ptr, ptr %4, align 8, !tbaa !5
  %65 = getelementptr inbounds %struct.XsPortInfo, ptr %64, i32 0, i32 3
  store i32 %63, ptr %65, align 4, !tbaa !19
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  ret void
}

declare void @XsDeviceId_swap(ptr noundef, ptr 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 = { "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/C++ TBAA"}
!9 = !{!10, !14, i64 296}
!10 = !{!"XsPortInfo", !11, i64 0, !7, i64 40, !14, i64 296, !14, i64 300, !13, i64 304, !13, i64 306}
!11 = !{!"XsDeviceId", !12, i64 0, !7, i64 8, !13, i64 32, !14, i64 36}
!12 = !{!"long", !7, i64 0}
!13 = !{!"short", !7, i64 0}
!14 = !{!"int", !7, i64 0}
!15 = !{!14, !14, i64 0}
!16 = !{!7, !7, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}
!19 = !{!10, !14, i64 300}


; 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 void @XsPortInfo_swap(ptr noundef %0, ptr noundef %1) local_unnamed_addr #0 {
vector.memcheck:
  %2 = getelementptr inbounds i8, ptr %0, i64 296
  %3 = load i32, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %1, i64 296
  %5 = load i32, ptr %4, align 8, !tbaa !5
  store i32 %5, ptr %2, align 8, !tbaa !5
  store i32 %3, ptr %4, align 8, !tbaa !5
  tail call void @XsDeviceId_swap(ptr noundef %0, ptr noundef %1) #2
  %6 = getelementptr inbounds i8, ptr %0, i64 40
  %7 = getelementptr inbounds i8, ptr %1, i64 40
  %scevgep = getelementptr i8, ptr %0, i64 296
  %scevgep24 = getelementptr i8, ptr %1, i64 296
  %bound0 = icmp ult ptr %6, %scevgep24
  %bound1 = icmp ult ptr %7, %scevgep
  %found.conflict = and i1 %bound0, %bound1
  br i1 %found.conflict, label %scalar.ph, label %vector.body

vector.body:                                      ; preds = %vector.memcheck
  %8 = getelementptr inbounds i8, ptr %0, i64 56
  %wide.load = load <16 x i8>, ptr %6, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %wide.load25 = load <16 x i8>, ptr %8, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %9 = getelementptr inbounds i8, ptr %1, i64 56
  %wide.load26 = load <16 x i8>, ptr %7, align 1, !tbaa !13, !alias.scope !17
  %wide.load27 = load <16 x i8>, ptr %9, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load26, ptr %6, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load27, ptr %8, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load, ptr %7, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load25, ptr %9, align 1, !tbaa !13, !alias.scope !17
  %10 = getelementptr inbounds i8, ptr %0, i64 72
  %11 = getelementptr inbounds i8, ptr %0, i64 88
  %wide.load.1 = load <16 x i8>, ptr %10, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %wide.load25.1 = load <16 x i8>, ptr %11, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %12 = getelementptr inbounds i8, ptr %1, i64 72
  %13 = getelementptr inbounds i8, ptr %1, i64 88
  %wide.load26.1 = load <16 x i8>, ptr %12, align 1, !tbaa !13, !alias.scope !17
  %wide.load27.1 = load <16 x i8>, ptr %13, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load26.1, ptr %10, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load27.1, ptr %11, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load.1, ptr %12, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load25.1, ptr %13, align 1, !tbaa !13, !alias.scope !17
  %14 = getelementptr inbounds i8, ptr %0, i64 104
  %15 = getelementptr inbounds i8, ptr %0, i64 120
  %wide.load.2 = load <16 x i8>, ptr %14, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %wide.load25.2 = load <16 x i8>, ptr %15, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %16 = getelementptr inbounds i8, ptr %1, i64 104
  %17 = getelementptr inbounds i8, ptr %1, i64 120
  %wide.load26.2 = load <16 x i8>, ptr %16, align 1, !tbaa !13, !alias.scope !17
  %wide.load27.2 = load <16 x i8>, ptr %17, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load26.2, ptr %14, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load27.2, ptr %15, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load.2, ptr %16, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load25.2, ptr %17, align 1, !tbaa !13, !alias.scope !17
  %18 = getelementptr inbounds i8, ptr %0, i64 136
  %19 = getelementptr inbounds i8, ptr %0, i64 152
  %wide.load.3 = load <16 x i8>, ptr %18, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %wide.load25.3 = load <16 x i8>, ptr %19, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %20 = getelementptr inbounds i8, ptr %1, i64 136
  %21 = getelementptr inbounds i8, ptr %1, i64 152
  %wide.load26.3 = load <16 x i8>, ptr %20, align 1, !tbaa !13, !alias.scope !17
  %wide.load27.3 = load <16 x i8>, ptr %21, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load26.3, ptr %18, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load27.3, ptr %19, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load.3, ptr %20, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load25.3, ptr %21, align 1, !tbaa !13, !alias.scope !17
  %22 = getelementptr inbounds i8, ptr %0, i64 168
  %23 = getelementptr inbounds i8, ptr %0, i64 184
  %wide.load.4 = load <16 x i8>, ptr %22, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %wide.load25.4 = load <16 x i8>, ptr %23, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %24 = getelementptr inbounds i8, ptr %1, i64 168
  %25 = getelementptr inbounds i8, ptr %1, i64 184
  %wide.load26.4 = load <16 x i8>, ptr %24, align 1, !tbaa !13, !alias.scope !17
  %wide.load27.4 = load <16 x i8>, ptr %25, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load26.4, ptr %22, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load27.4, ptr %23, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load.4, ptr %24, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load25.4, ptr %25, align 1, !tbaa !13, !alias.scope !17
  %26 = getelementptr inbounds i8, ptr %0, i64 200
  %27 = getelementptr inbounds i8, ptr %0, i64 216
  %wide.load.5 = load <16 x i8>, ptr %26, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %wide.load25.5 = load <16 x i8>, ptr %27, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %28 = getelementptr inbounds i8, ptr %1, i64 200
  %29 = getelementptr inbounds i8, ptr %1, i64 216
  %wide.load26.5 = load <16 x i8>, ptr %28, align 1, !tbaa !13, !alias.scope !17
  %wide.load27.5 = load <16 x i8>, ptr %29, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load26.5, ptr %26, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load27.5, ptr %27, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load.5, ptr %28, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load25.5, ptr %29, align 1, !tbaa !13, !alias.scope !17
  %30 = getelementptr inbounds i8, ptr %0, i64 232
  %31 = getelementptr inbounds i8, ptr %0, i64 248
  %wide.load.6 = load <16 x i8>, ptr %30, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %wide.load25.6 = load <16 x i8>, ptr %31, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %32 = getelementptr inbounds i8, ptr %1, i64 232
  %33 = getelementptr inbounds i8, ptr %1, i64 248
  %wide.load26.6 = load <16 x i8>, ptr %32, align 1, !tbaa !13, !alias.scope !17
  %wide.load27.6 = load <16 x i8>, ptr %33, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load26.6, ptr %30, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load27.6, ptr %31, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load.6, ptr %32, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load25.6, ptr %33, align 1, !tbaa !13, !alias.scope !17
  %34 = getelementptr inbounds i8, ptr %0, i64 264
  %35 = getelementptr inbounds i8, ptr %0, i64 280
  %wide.load.7 = load <16 x i8>, ptr %34, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %wide.load25.7 = load <16 x i8>, ptr %35, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  %36 = getelementptr inbounds i8, ptr %1, i64 264
  %37 = getelementptr inbounds i8, ptr %1, i64 280
  %wide.load26.7 = load <16 x i8>, ptr %36, align 1, !tbaa !13, !alias.scope !17
  %wide.load27.7 = load <16 x i8>, ptr %37, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load26.7, ptr %34, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load27.7, ptr %35, align 1, !tbaa !13, !alias.scope !14, !noalias !17
  store <16 x i8> %wide.load.7, ptr %36, align 1, !tbaa !13, !alias.scope !17
  store <16 x i8> %wide.load25.7, ptr %37, align 1, !tbaa !13, !alias.scope !17
  br label %middle.block

scalar.ph:                                        ; preds = %vector.memcheck, %scalar.ph
  %indvars.iv = phi i64 [ %indvars.iv.next.1, %scalar.ph ], [ 0, %vector.memcheck ]
  %38 = getelementptr inbounds [256 x i8], ptr %6, i64 0, i64 %indvars.iv
  %39 = load i8, ptr %38, align 1, !tbaa !13
  %40 = getelementptr inbounds [256 x i8], ptr %7, i64 0, i64 %indvars.iv
  %41 = load i8, ptr %40, align 1, !tbaa !13
  store i8 %41, ptr %38, align 1, !tbaa !13
  store i8 %39, ptr %40, align 1, !tbaa !13
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %42 = getelementptr inbounds [256 x i8], ptr %6, i64 0, i64 %indvars.iv.next
  %43 = load i8, ptr %42, align 1, !tbaa !13
  %44 = getelementptr inbounds [256 x i8], ptr %7, i64 0, i64 %indvars.iv.next
  %45 = load i8, ptr %44, align 1, !tbaa !13
  store i8 %45, ptr %42, align 1, !tbaa !13
  store i8 %43, ptr %44, align 1, !tbaa !13
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %exitcond.not.1 = icmp eq i64 %indvars.iv.next.1, 256
  br i1 %exitcond.not.1, label %middle.block, label %scalar.ph, !llvm.loop !19

middle.block:                                     ; preds = %scalar.ph, %vector.body
  %46 = getelementptr inbounds i8, ptr %0, i64 300
  %47 = load i32, ptr %46, align 4, !tbaa !22
  %48 = getelementptr inbounds i8, ptr %1, i64 300
  %49 = load i32, ptr %48, align 4, !tbaa !22
  store i32 %49, ptr %46, align 4, !tbaa !22
  store i32 %47, ptr %48, align 4, !tbaa !22
  ret void
}

declare void @XsDeviceId_swap(ptr noundef, ptr 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 = { "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 }

!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, !12, i64 296}
!6 = !{!"XsPortInfo", !7, i64 0, !9, i64 40, !12, i64 296, !12, i64 300, !11, i64 304, !11, i64 306}
!7 = !{!"XsDeviceId", !8, i64 0, !9, i64 8, !11, i64 32, !12, i64 36}
!8 = !{!"long", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
!11 = !{!"short", !9, i64 0}
!12 = !{!"int", !9, i64 0}
!13 = !{!9, !9, i64 0}
!14 = !{!15}
!15 = distinct !{!15, !16}
!16 = distinct !{!16, !"LVerDomain"}
!17 = !{!18}
!18 = distinct !{!18, !16}
!19 = distinct !{!19, !20, !21}
!20 = !{!"llvm.loop.mustprogress"}
!21 = !{!"llvm.loop.isvectorized", i32 1}
!22 = !{!6, !12, i64 300}


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