; LLVM IR from Dovyski/opengl-demos :: libs/glm-0.9.9.3/test/gtc/gtc_packing.ll (Z15test_packInt2x8v)

; 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.glm::vec.102" = type { %union.anon.103 }
%union.anon.103 = type { %struct.anon.104 }
%struct.anon.104 = type { i8, i8 }

; 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: mustprogress uwtable
define dso_local noundef i32 @_Z15test_packInt2x8v() #1 {
  %1 = alloca i32, align 4
  %2 = alloca %"struct.glm::vec.102", align 1
  %3 = alloca i16, align 2
  %4 = alloca %"struct.glm::vec.102", align 1
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #4
  store i32 0, ptr %1, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 2, ptr %2) #4
  call void @_ZN3glm3vecILi2EaLNS_9qualifierE0EEC2IiiEET_T0_(ptr noundef nonnull align 1 dereferenceable(2) %2, i32 noundef 1, i32 noundef 2)
  call void @llvm.lifetime.start.p0(i64 2, ptr %3) #4
  %5 = call noundef signext i16 @_ZN3glm10packInt2x8ERKNS_3vecILi2EaLNS_9qualifierE0EEE(ptr noundef nonnull align 1 dereferenceable(2) %2)
  store i16 %5, ptr %3, align 2, !tbaa !9
  %6 = load i16, ptr %3, align 2, !tbaa !9
  %7 = sext i16 %6 to i32
  %8 = icmp ne i32 %7, 0
  %9 = zext i1 %8 to i64
  %10 = select i1 %8, i32 0, i32 1
  %11 = load i32, ptr %1, align 4, !tbaa !5
  %12 = add nsw i32 %11, %10
  store i32 %12, ptr %1, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 2, ptr %4) #4
  %13 = load i16, ptr %3, align 2, !tbaa !9
  %14 = call i16 @_ZN3glm12unpackInt2x8Es(i16 noundef signext %13)
  %15 = getelementptr inbounds %"struct.glm::vec.102", ptr %4, i32 0, i32 0
  %16 = getelementptr inbounds %union.anon.103, ptr %15, i32 0, i32 0
  store i16 %14, ptr %16, align 1
  %17 = call noundef zeroext i1 @_ZN3glmeqIaLNS_9qualifierE0EEEbRKNS_3vecILi2ET_XT0_EEES6_(ptr noundef nonnull align 1 dereferenceable(2) %2, ptr noundef nonnull align 1 dereferenceable(2) %4)
  %18 = zext i1 %17 to i64
  %19 = select i1 %17, i32 0, i32 1
  %20 = load i32, ptr %1, align 4, !tbaa !5
  %21 = add nsw i32 %20, %19
  store i32 %21, ptr %1, align 4, !tbaa !5
  %22 = load i32, ptr %1, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 2, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 2, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 2, ptr %2) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #4
  ret i32 %22
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3glm3vecILi2EaLNS_9qualifierE0EEC2IiiEET_T0_(ptr noundef nonnull align 1 dereferenceable(2), i32 noundef, i32 noundef) unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef signext i16 @_ZN3glm10packInt2x8ERKNS_3vecILi2EaLNS_9qualifierE0EEE(ptr noundef nonnull align 1 dereferenceable(2)) #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local i16 @_ZN3glm12unpackInt2x8Es(i16 noundef signext) #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN3glmeqIaLNS_9qualifierE0EEEbRKNS_3vecILi2ET_XT0_EEES6_(ptr noundef nonnull align 1 dereferenceable(2), ptr noundef nonnull align 1 dereferenceable(2)) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 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"="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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"short", !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"

%"struct.glm::vec.102" = type { %union.anon.103 }
%union.anon.103 = type { %struct.anon.104 }
%struct.anon.104 = type { i8, i8 }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef range(i32 0, 3) i32 @_Z15test_packInt2x8v() local_unnamed_addr #1 {
  %1 = alloca %"struct.glm::vec.102", align 1
  %2 = alloca %"struct.glm::vec.102", align 2
  call void @llvm.lifetime.start.p0(i64 2, ptr nonnull %1) #4
  call void @_ZN3glm3vecILi2EaLNS_9qualifierE0EEC2IiiEET_T0_(ptr noundef nonnull align 1 dereferenceable(2) %1, i32 noundef 1, i32 noundef 2)
  %3 = call noundef signext i16 @_ZN3glm10packInt2x8ERKNS_3vecILi2EaLNS_9qualifierE0EEE(ptr noundef nonnull align 1 dereferenceable(2) %1)
  %.not = icmp eq i16 %3, 0
  %4 = zext i1 %.not to i32
  call void @llvm.lifetime.start.p0(i64 2, ptr nonnull %2) #4
  %5 = call i16 @_ZN3glm12unpackInt2x8Es(i16 noundef signext %3)
  store i16 %5, ptr %2, align 2
  %6 = call noundef zeroext i1 @_ZN3glmeqIaLNS_9qualifierE0EEEbRKNS_3vecILi2ET_XT0_EEES6_(ptr noundef nonnull align 1 dereferenceable(2) %1, ptr noundef nonnull align 1 dereferenceable(2) %2)
  %not. = xor i1 %6, true
  %7 = zext i1 %not. to i32
  %8 = add nuw nsw i32 %7, %4
  call void @llvm.lifetime.end.p0(i64 2, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 2, ptr nonnull %1) #4
  ret i32 %8
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3glm3vecILi2EaLNS_9qualifierE0EEC2IiiEET_T0_(ptr noundef nonnull align 1 dereferenceable(2), i32 noundef, i32 noundef) unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef signext i16 @_ZN3glm10packInt2x8ERKNS_3vecILi2EaLNS_9qualifierE0EEE(ptr noundef nonnull align 1 dereferenceable(2)) local_unnamed_addr #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local i16 @_ZN3glm12unpackInt2x8Es(i16 noundef signext) local_unnamed_addr #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN3glmeqIaLNS_9qualifierE0EEEbRKNS_3vecILi2ET_XT0_EEES6_(ptr noundef nonnull align 1 dereferenceable(2), ptr noundef nonnull align 1 dereferenceable(2)) local_unnamed_addr #3

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 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"="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 = { 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)"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,ReassociatePass,SROAPass