; LLVM IR from kkumatani/distant_speech_recognition :: btk20_src/matrix/blas1_c.ll (Z6csign1St7complexIfES0_)

; 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.std::complex" = type { { float, float } }

; Function Attrs: mustprogress uwtable
declare dso_local noundef float @_Z5cabs1St7complexIfE(<2 x float>) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt7complexIfEC2Eff(ptr noundef nonnull align 4 dereferenceable(8), float noundef, float noundef) unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local <2 x float> @_ZStdvIfESt7complexIT_ERKS2_RKS1_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4)) #4

; Function Attrs: mustprogress uwtable
define dso_local <2 x float> @_Z6csign1St7complexIfES0_(<2 x float> %0, <2 x float> %1) #0 {
  %3 = alloca %"class.std::complex", align 4
  %4 = alloca %"class.std::complex", align 4
  %5 = alloca %"class.std::complex", align 4
  %6 = alloca %"class.std::complex", align 4
  %7 = alloca %"class.std::complex", align 4
  %8 = alloca %"class.std::complex", align 4
  %9 = alloca float, align 4
  %10 = alloca %"class.std::complex", align 4
  %11 = alloca %"class.std::complex", align 4
  %12 = alloca float, align 4
  %13 = alloca %"class.std::complex", align 4
  %14 = getelementptr inbounds %"class.std::complex", ptr %4, i32 0, i32 0
  store <2 x float> %0, ptr %14, align 4
  %15 = getelementptr inbounds %"class.std::complex", ptr %5, i32 0, i32 0
  store <2 x float> %1, ptr %15, align 4
  call void @_ZNSt7complexIfEC2Eff(ptr noundef nonnull align 4 dereferenceable(8) %3, float noundef 0.000000e+00, float noundef 0.000000e+00)
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %6, ptr align 4 %5, i64 8, i1 false), !tbaa.struct !5
  %16 = getelementptr inbounds %"class.std::complex", ptr %6, i32 0, i32 0
  %17 = load <2 x float>, ptr %16, align 4
  %18 = call noundef float @_Z5cabs1St7complexIfE(<2 x float> %17)
  %19 = fpext float %18 to double
  %20 = fcmp oeq double %19, 0.000000e+00
  br i1 %20, label %21, label %22

21:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  call void @_ZNSt7complexIfEC2Eff(ptr noundef nonnull align 4 dereferenceable(8) %7, float noundef 0.000000e+00, float noundef 0.000000e+00)
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %3, ptr align 4 %7, i64 8, i1 false), !tbaa.struct !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  br label %33

22:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #6
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %10, ptr align 4 %4, i64 8, i1 false), !tbaa.struct !5
  %23 = getelementptr inbounds %"class.std::complex", ptr %10, i32 0, i32 0
  %24 = load <2 x float>, ptr %23, align 4
  %25 = call noundef float @_Z5cabs1St7complexIfE(<2 x float> %24)
  store float %25, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #6
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %13, ptr align 4 %5, i64 8, i1 false), !tbaa.struct !5
  %26 = getelementptr inbounds %"class.std::complex", ptr %13, i32 0, i32 0
  %27 = load <2 x float>, ptr %26, align 4
  %28 = call noundef float @_Z5cabs1St7complexIfE(<2 x float> %27)
  store float %28, ptr %12, align 4, !tbaa !9
  %29 = call <2 x float> @_ZStdvIfESt7complexIT_ERKS2_RKS1_(ptr noundef nonnull align 4 dereferenceable(8) %5, ptr noundef nonnull align 4 dereferenceable(4) %12)
  %30 = getelementptr inbounds %"class.std::complex", ptr %11, i32 0, i32 0
  store <2 x float> %29, ptr %30, align 4
  %31 = call <2 x float> @_ZStmlIfESt7complexIT_ERKS1_RKS2_(ptr noundef nonnull align 4 dereferenceable(4) %9, ptr noundef nonnull align 4 dereferenceable(8) %11)
  %32 = getelementptr inbounds %"class.std::complex", ptr %8, i32 0, i32 0
  store <2 x float> %31, ptr %32, align 4
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %3, ptr align 4 %8, i64 8, i1 false), !tbaa.struct !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  br label %33

33:                                               ; preds = %22, %21
  %34 = getelementptr inbounds %"class.std::complex", ptr %3, i32 0, i32 0
  %35 = load <2 x float>, ptr %34, align 4
  ret <2 x float> %35
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local <2 x float> @_ZStmlIfESt7complexIT_ERKS1_RKS2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(8)) #5

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="64" "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { mustprogress 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 #4 = { inlinehint mustprogress uwtable "min-legal-vector-width"="64" "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 #5 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="64" "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 #6 = { 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 = !{i64 0, i64 8, !6}
!6 = !{!7, !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"float", !7, i64 0}


; 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"

%"class.std::complex" = type { { float, float } }

; Function Attrs: mustprogress uwtable
declare dso_local noundef float @_Z5cabs1St7complexIfE(<2 x float>) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt7complexIfEC2Eff(ptr noundef nonnull align 4 dereferenceable(8), float noundef, float noundef) unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local <2 x float> @_ZStdvIfESt7complexIT_ERKS2_RKS1_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
define dso_local <2 x float> @_Z6csign1St7complexIfES0_(<2 x float> %0, <2 x float> %1) local_unnamed_addr #0 {
  %3 = alloca %"class.std::complex", align 4
  %4 = alloca %"class.std::complex", align 8
  %5 = alloca %"class.std::complex", align 8
  %6 = alloca float, align 4
  %7 = alloca %"class.std::complex", align 8
  %8 = alloca float, align 4
  store <2 x float> %1, ptr %4, align 8
  call void @_ZNSt7complexIfEC2Eff(ptr noundef nonnull align 4 dereferenceable(8) %3, float noundef 0.000000e+00, float noundef 0.000000e+00)
  %9 = call noundef float @_Z5cabs1St7complexIfE(<2 x float> %1)
  %10 = fcmp oeq float %9, 0.000000e+00
  br i1 %10, label %11, label %13

11:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #5
  call void @_ZNSt7complexIfEC2Eff(ptr noundef nonnull align 4 dereferenceable(8) %5, float noundef 0.000000e+00, float noundef 0.000000e+00)
  %12 = load <2 x float>, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #5
  br label %18

13:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #5
  %14 = call noundef float @_Z5cabs1St7complexIfE(<2 x float> %0)
  store float %14, ptr %6, align 4, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %7) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %8) #5
  %15 = call noundef float @_Z5cabs1St7complexIfE(<2 x float> %1)
  store float %15, ptr %8, align 4, !tbaa !8
  %16 = call <2 x float> @_ZStdvIfESt7complexIT_ERKS2_RKS1_(ptr noundef nonnull align 4 dereferenceable(8) %4, ptr noundef nonnull align 4 dereferenceable(4) %8)
  store <2 x float> %16, ptr %7, align 8
  %17 = call <2 x float> @_ZStmlIfESt7complexIT_ERKS1_RKS2_(ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(8) %7)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #5
  br label %18

18:                                               ; preds = %13, %11
  %.sink = phi <2 x float> [ %12, %11 ], [ %17, %13 ]
  ret <2 x float> %.sink
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local <2 x float> @_ZStmlIfESt7complexIT_ERKS1_RKS2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #4

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="64" "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 willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress 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 = { inlinehint mustprogress uwtable "min-legal-vector-width"="64" "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 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="64" "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 #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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"float", !6, i64 0}


; Effective O3 passes: DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,MergedLoadStoreMotionPass,SROAPass