; LLVM IR from indygreg/python-zstandard :: zstd (zstd)

; 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.ZSTD_CCtx_params_s = type { i32, %struct.ZSTD_compressionParameters, %struct.ZSTD_frameParameters, i32, i32, i64, i32, i32, i32, i32, i64, i32, i32, %struct.ldmParams_t, i32, i32, i32, i32, i32, i32, i32, i32, %struct.ZSTD_customMem, i32, i32, ptr, ptr, i64, i32 }
%struct.ZSTD_compressionParameters = type { i32, i32, i32, i32, i32, i32, i32 }
%struct.ZSTD_frameParameters = type { i32, i32, i32 }
%struct.ldmParams_t = type { i32, i32, i32, i32, i32, i32 }
%struct.ZSTD_customMem = type { ptr, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local void @ZSTD_CCtxParams_registerSequenceProducer(ptr noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  %8 = icmp ne ptr %7, null
  br i1 %8, label %9, label %16

9:                                                ; preds = %3
  %10 = load ptr, ptr %6, align 8, !tbaa !5
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.ZSTD_CCtx_params_s, ptr %11, i32 0, i32 26
  store ptr %10, ptr %12, align 8, !tbaa !9
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.ZSTD_CCtx_params_s, ptr %14, i32 0, i32 25
  store ptr %13, ptr %15, align 8, !tbaa !17
  br label %21

16:                                               ; preds = %3
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.ZSTD_CCtx_params_s, ptr %17, i32 0, i32 26
  store ptr null, ptr %18, align 8, !tbaa !9
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.ZSTD_CCtx_params_s, ptr %19, i32 0, i32 25
  store ptr null, ptr %20, align 8, !tbaa !17
  br label %21

21:                                               ; preds = %16, %9
  ret void
}

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" }

!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 192}
!10 = !{!"ZSTD_CCtx_params_s", !11, i64 0, !12, i64 4, !13, i64 32, !11, i64 44, !11, i64 48, !14, i64 56, !11, i64 64, !11, i64 68, !11, i64 72, !11, i64 76, !14, i64 80, !11, i64 88, !11, i64 92, !15, i64 96, !11, i64 120, !11, i64 124, !11, i64 128, !11, i64 132, !11, i64 136, !11, i64 140, !11, i64 144, !11, i64 148, !16, i64 152, !11, i64 176, !11, i64 180, !6, i64 184, !6, i64 192, !14, i64 200, !11, i64 208}
!11 = !{!"int", !7, i64 0}
!12 = !{!"", !11, i64 0, !11, i64 4, !11, i64 8, !11, i64 12, !11, i64 16, !11, i64 20, !11, i64 24}
!13 = !{!"", !11, i64 0, !11, i64 4, !11, i64 8}
!14 = !{!"long", !7, i64 0}
!15 = !{!"", !11, i64 0, !11, i64 4, !11, i64 8, !11, i64 12, !11, i64 16, !11, i64 20}
!16 = !{!"", !6, i64 0, !6, i64 8, !6, i64 16}
!17 = !{!10, !6, i64 184}


; 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 @ZSTD_CCtxParams_registerSequenceProducer(ptr nocapture noundef writeonly %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #0 {
  %.not = icmp eq ptr %2, null
  %spec.select = select i1 %.not, ptr null, ptr %1
  %4 = getelementptr inbounds i8, ptr %0, i64 192
  store ptr %2, ptr %4, align 8
  %5 = getelementptr inbounds i8, ptr %0, i64 184
  store ptr %spec.select, ptr %5, align 8
  ret void
}

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" }

!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: CorrelatedValuePropagationPass,GlobalOptPass,InstCombinePass,JumpThreadingPass,MergedLoadStoreMotionPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass