; LLVM IR from danginsburg/opengles3-book :: Common/Source (esTransform)

; 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.ESMatrix = type { [4 x [4 x float]] }

; Function Attrs: nounwind uwtable
define dso_local void @esMatrixLoadIdentity(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  call void @llvm.memset.p0.i64(ptr align 4 %3, i8 0, i64 64, i1 false)
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = getelementptr inbounds %struct.ESMatrix, ptr %4, i32 0, i32 0
  %6 = getelementptr inbounds [4 x [4 x float]], ptr %5, i64 0, i64 0
  %7 = getelementptr inbounds [4 x float], ptr %6, i64 0, i64 0
  store float 1.000000e+00, ptr %7, align 4, !tbaa !9
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.ESMatrix, ptr %8, i32 0, i32 0
  %10 = getelementptr inbounds [4 x [4 x float]], ptr %9, i64 0, i64 1
  %11 = getelementptr inbounds [4 x float], ptr %10, i64 0, i64 1
  store float 1.000000e+00, ptr %11, align 4, !tbaa !9
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.ESMatrix, ptr %12, i32 0, i32 0
  %14 = getelementptr inbounds [4 x [4 x float]], ptr %13, i64 0, i64 2
  %15 = getelementptr inbounds [4 x float], ptr %14, i64 0, i64 2
  store float 1.000000e+00, ptr %15, align 4, !tbaa !9
  %16 = load ptr, ptr %2, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.ESMatrix, ptr %16, i32 0, i32 0
  %18 = getelementptr inbounds [4 x [4 x float]], ptr %17, i64 0, i64 3
  %19 = getelementptr inbounds [4 x float], ptr %18, i64 0, i64 3
  store float 1.000000e+00, ptr %19, align 4, !tbaa !9
  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 = { 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 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) uwtable
define dso_local void @esMatrixLoadIdentity(ptr nocapture noundef writeonly %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 4
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(64) %2, i8 0, i64 56, i1 false)
  store float 1.000000e+00, ptr %0, align 4, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %0, i64 20
  store float 1.000000e+00, ptr %3, align 4, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 40
  store float 1.000000e+00, ptr %4, align 4, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %0, i64 60
  store float 1.000000e+00, ptr %5, align 4, !tbaa !5
  ret void
}

; Function Attrs: mustprogress 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 = { mustprogress 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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


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