; LLVM IR from heroseh/cgm :: cgm (CgmMat4x4_identity)

; 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"

%union.CgmVec4 = type { %struct.anon.1 }
%struct.anon.1 = type { float, float, float, float }

; 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) #0

; Function Attrs: nounwind uwtable
define dso_local void @CgmMat4x4_identity(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca %union.CgmVec4, align 4
  %4 = alloca %union.CgmVec4, align 4
  %5 = alloca %union.CgmVec4, align 4
  %6 = alloca %union.CgmVec4, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds [4 x %union.CgmVec4], ptr %7, i64 0, i64 0
  %9 = getelementptr inbounds %struct.anon.1, ptr %3, i32 0, i32 0
  store float 1.000000e+00, ptr %9, align 4, !tbaa !9
  %10 = getelementptr inbounds %struct.anon.1, ptr %3, i32 0, i32 1
  store float 0.000000e+00, ptr %10, align 4, !tbaa !12
  %11 = getelementptr inbounds %struct.anon.1, ptr %3, i32 0, i32 2
  store float 0.000000e+00, ptr %11, align 4, !tbaa !13
  %12 = getelementptr inbounds %struct.anon.1, ptr %3, i32 0, i32 3
  store float 0.000000e+00, ptr %12, align 4, !tbaa !14
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %8, ptr align 4 %3, i64 16, i1 false), !tbaa.struct !15
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  %14 = getelementptr inbounds [4 x %union.CgmVec4], ptr %13, i64 0, i64 1
  %15 = getelementptr inbounds %struct.anon.1, ptr %4, i32 0, i32 0
  store float 0.000000e+00, ptr %15, align 4, !tbaa !9
  %16 = getelementptr inbounds %struct.anon.1, ptr %4, i32 0, i32 1
  store float 1.000000e+00, ptr %16, align 4, !tbaa !12
  %17 = getelementptr inbounds %struct.anon.1, ptr %4, i32 0, i32 2
  store float 0.000000e+00, ptr %17, align 4, !tbaa !13
  %18 = getelementptr inbounds %struct.anon.1, ptr %4, i32 0, i32 3
  store float 0.000000e+00, ptr %18, align 4, !tbaa !14
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %14, ptr align 4 %4, i64 16, i1 false), !tbaa.struct !15
  %19 = load ptr, ptr %2, align 8, !tbaa !5
  %20 = getelementptr inbounds [4 x %union.CgmVec4], ptr %19, i64 0, i64 2
  %21 = getelementptr inbounds %struct.anon.1, ptr %5, i32 0, i32 0
  store float 0.000000e+00, ptr %21, align 4, !tbaa !9
  %22 = getelementptr inbounds %struct.anon.1, ptr %5, i32 0, i32 1
  store float 0.000000e+00, ptr %22, align 4, !tbaa !12
  %23 = getelementptr inbounds %struct.anon.1, ptr %5, i32 0, i32 2
  store float 1.000000e+00, ptr %23, align 4, !tbaa !13
  %24 = getelementptr inbounds %struct.anon.1, ptr %5, i32 0, i32 3
  store float 0.000000e+00, ptr %24, align 4, !tbaa !14
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %20, ptr align 4 %5, i64 16, i1 false), !tbaa.struct !15
  %25 = load ptr, ptr %2, align 8, !tbaa !5
  %26 = getelementptr inbounds [4 x %union.CgmVec4], ptr %25, i64 0, i64 3
  %27 = getelementptr inbounds %struct.anon.1, ptr %6, i32 0, i32 0
  store float 0.000000e+00, ptr %27, align 4, !tbaa !9
  %28 = getelementptr inbounds %struct.anon.1, ptr %6, i32 0, i32 1
  store float 0.000000e+00, ptr %28, align 4, !tbaa !12
  %29 = getelementptr inbounds %struct.anon.1, ptr %6, i32 0, i32 2
  store float 0.000000e+00, ptr %29, align 4, !tbaa !13
  %30 = getelementptr inbounds %struct.anon.1, ptr %6, i32 0, i32 3
  store float 1.000000e+00, ptr %30, align 4, !tbaa !14
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %26, ptr align 4 %6, i64 16, i1 false), !tbaa.struct !15
  ret void
}

attributes #0 = { nocallback nofree 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" }

!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, !11, i64 0}
!10 = !{!"", !11, i64 0, !11, i64 4, !11, i64 8, !11, i64 12}
!11 = !{!"float", !7, i64 0}
!12 = !{!10, !11, i64 4}
!13 = !{!10, !11, i64 8}
!14 = !{!10, !11, i64 12}
!15 = !{i64 0, i64 16, !16}
!16 = !{!7, !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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) uwtable
define dso_local void @CgmMat4x4_identity(ptr nocapture noundef writeonly %0) local_unnamed_addr #0 {
  store float 1.000000e+00, ptr %0, align 4
  %.sroa.210.0..sroa_idx = getelementptr inbounds i8, ptr %0, i64 4
  %.sroa.26.0..sroa_idx = getelementptr inbounds i8, ptr %0, i64 20
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(16) %.sroa.210.0..sroa_idx, i8 0, i64 16, i1 false)
  store float 1.000000e+00, ptr %.sroa.26.0..sroa_idx, align 4
  %.sroa.37.0..sroa_idx = getelementptr inbounds i8, ptr %0, i64 24
  %.sroa.33.0..sroa_idx = getelementptr inbounds i8, ptr %0, i64 40
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(16) %.sroa.37.0..sroa_idx, i8 0, i64 16, i1 false)
  store float 1.000000e+00, ptr %.sroa.33.0..sroa_idx, align 4
  %.sroa.44.0..sroa_idx = getelementptr inbounds i8, ptr %0, i64 44
  %.sroa.4.0..sroa_idx = getelementptr inbounds i8, ptr %0, i64 60
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(16) %.sroa.44.0..sroa_idx, i8 0, i64 16, i1 false)
  store float 1.000000e+00, ptr %.sroa.4.0..sroa_idx, align 4, !tbaa !5
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) 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 = { nocallback nofree nounwind willreturn memory(argmem: write) }

!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/C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass