; LLVM IR from introlab/odas :: src/utils (cmatrix)

; 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.cmatrix_obj = type { ptr, ptr, i32, i32 }

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #0

; Function Attrs: nounwind uwtable
define dso_local void @cmatrix_copy_zero(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds %struct.cmatrix_obj, ptr %3, i32 0, i32 0
  %5 = load ptr, ptr %4, align 8, !tbaa !9
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.cmatrix_obj, ptr %6, i32 0, i32 2
  %8 = load i32, ptr %7, align 8, !tbaa !12
  %9 = zext i32 %8 to i64
  %10 = mul i64 4, %9
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.cmatrix_obj, ptr %11, i32 0, i32 3
  %13 = load i32, ptr %12, align 4, !tbaa !13
  %14 = zext i32 %13 to i64
  %15 = mul i64 %10, %14
  call void @llvm.memset.p0.i64(ptr align 4 %5, i8 0, i64 %15, i1 false)
  %16 = load ptr, ptr %2, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.cmatrix_obj, ptr %16, i32 0, i32 1
  %18 = load ptr, ptr %17, align 8, !tbaa !14
  %19 = load ptr, ptr %2, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.cmatrix_obj, ptr %19, i32 0, i32 2
  %21 = load i32, ptr %20, align 8, !tbaa !12
  %22 = zext i32 %21 to i64
  %23 = mul i64 4, %22
  %24 = load ptr, ptr %2, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.cmatrix_obj, ptr %24, i32 0, i32 3
  %26 = load i32, ptr %25, align 4, !tbaa !13
  %27 = zext i32 %26 to i64
  %28 = mul i64 %23, %27
  call void @llvm.memset.p0.i64(ptr align 4 %18, i8 0, i64 %28, i1 false)
  ret void
}

attributes #0 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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, !6, i64 0}
!10 = !{!"cmatrix_obj", !6, i64 0, !6, i64 8, !11, i64 16, !11, i64 20}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 16}
!13 = !{!10, !11, i64 20}
!14 = !{!10, !6, i64 8}


; 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 nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #0

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local void @cmatrix_copy_zero(ptr nocapture noundef readonly %0) local_unnamed_addr #1 {
  %2 = load ptr, ptr %0, align 8, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = load i32, ptr %3, align 8, !tbaa !11
  %5 = zext i32 %4 to i64
  %6 = shl nuw nsw i64 %5, 2
  %7 = getelementptr inbounds i8, ptr %0, i64 20
  %8 = load i32, ptr %7, align 4, !tbaa !12
  %9 = zext i32 %8 to i64
  %10 = mul i64 %6, %9
  tail call void @llvm.memset.p0.i64(ptr align 4 %2, i8 0, i64 %10, i1 false)
  %11 = getelementptr inbounds i8, ptr %0, i64 8
  %12 = load ptr, ptr %11, align 8, !tbaa !13
  %13 = load i32, ptr %3, align 8, !tbaa !11
  %14 = zext i32 %13 to i64
  %15 = shl nuw nsw i64 %14, 2
  %16 = load i32, ptr %7, align 4, !tbaa !12
  %17 = zext i32 %16 to i64
  %18 = mul i64 %15, %17
  tail call void @llvm.memset.p0.i64(ptr align 4 %12, i8 0, i64 %18, i1 false)
  ret void
}

attributes #0 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #1 = { mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: readwrite, inaccessiblemem: none) 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, !7, i64 0}
!6 = !{!"cmatrix_obj", !7, i64 0, !7, i64 8, !10, i64 16, !10, i64 20}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !10, i64 16}
!12 = !{!6, !10, i64 20}
!13 = !{!6, !7, i64 8}


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