; 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_compressionParameters = type { i32, i32, i32, i32, i32, i32, i32 }

; 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: 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) #1

; Function Attrs: nounwind uwtable
define dso_local void @ZSTD_adjustCParams(ptr dead_on_unwind noalias writable sret(%struct.ZSTD_compressionParameters) align 4 %0, ptr noundef byval(%struct.ZSTD_compressionParameters) align 8 %1, i64 noundef %2, i64 noundef %3) #2 {
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca %struct.ZSTD_compressionParameters, align 4
  store i64 %2, ptr %5, align 8, !tbaa !5
  store i64 %3, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 28, ptr %7) #3
  call void @ZSTD_clampCParams(ptr dead_on_unwind writable sret(%struct.ZSTD_compressionParameters) align 4 %7, ptr noundef byval(%struct.ZSTD_compressionParameters) align 8 %1)
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %1, ptr align 4 %7, i64 28, i1 false), !tbaa.struct !11
  call void @llvm.lifetime.end.p0(i64 28, ptr %7) #3
  %8 = load i64, ptr %5, align 8, !tbaa !5
  %9 = icmp eq i64 %8, 0
  br i1 %9, label %10, label %11

10:                                               ; preds = %4
  store i64 -1, ptr %5, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %10, %4
  %12 = load i64, ptr %5, align 8, !tbaa !5
  %13 = load i64, ptr %6, align 8, !tbaa !9
  call void @ZSTD_adjustCParams_internal(ptr dead_on_unwind writable sret(%struct.ZSTD_compressionParameters) align 4 %0, ptr noundef byval(%struct.ZSTD_compressionParameters) align 8 %1, i64 noundef %12, i64 noundef %13, i32 noundef 3, i32 noundef 0)
  ret void
}

; Function Attrs: nounwind uwtable
declare hidden void @ZSTD_clampCParams(ptr dead_on_unwind noalias writable sret(%struct.ZSTD_compressionParameters) align 4, ptr noundef byval(%struct.ZSTD_compressionParameters) align 8) #2

; Function Attrs: nounwind uwtable
declare hidden void @ZSTD_adjustCParams_internal(ptr dead_on_unwind noalias writable sret(%struct.ZSTD_compressionParameters) align 4, ptr noundef byval(%struct.ZSTD_compressionParameters) align 8, i64 noundef, i64 noundef, i32 noundef, i32 noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{i64 0, i64 4, !12, i64 4, i64 4, !12, i64 8, i64 4, !12, i64 12, i64 4, !12, i64 16, i64 4, !12, i64 20, i64 4, !12, i64 24, i64 4, !12}
!12 = !{!13, !13, i64 0}
!13 = !{!"int", !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.ZSTD_compressionParameters = type { i32, i32, i32, i32, i32, i32, i32 }

; 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 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) #1

; Function Attrs: nounwind uwtable
define dso_local void @ZSTD_adjustCParams(ptr dead_on_unwind noalias writable sret(%struct.ZSTD_compressionParameters) align 4 %0, ptr noundef byval(%struct.ZSTD_compressionParameters) align 8 %1, i64 noundef %2, i64 noundef %3) local_unnamed_addr #2 {
  %5 = alloca %struct.ZSTD_compressionParameters, align 8
  call void @llvm.lifetime.start.p0(i64 28, ptr nonnull %5) #3
  call void @ZSTD_clampCParams(ptr dead_on_unwind nonnull writable sret(%struct.ZSTD_compressionParameters) align 4 %5, ptr noundef nonnull byval(%struct.ZSTD_compressionParameters) align 8 %1)
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(28) %1, ptr noundef nonnull align 8 dereferenceable(28) %5, i64 28, i1 false), !tbaa.struct !5
  call void @llvm.lifetime.end.p0(i64 28, ptr nonnull %5) #3
  %6 = icmp eq i64 %2, 0
  %spec.store.select = select i1 %6, i64 -1, i64 %2
  call void @ZSTD_adjustCParams_internal(ptr dead_on_unwind writable sret(%struct.ZSTD_compressionParameters) align 4 %0, ptr noundef nonnull byval(%struct.ZSTD_compressionParameters) align 8 %1, i64 noundef %spec.store.select, i64 noundef %3, i32 noundef 3, i32 noundef 0)
  ret void
}

; Function Attrs: nounwind uwtable
declare hidden void @ZSTD_clampCParams(ptr dead_on_unwind noalias writable sret(%struct.ZSTD_compressionParameters) align 4, ptr noundef byval(%struct.ZSTD_compressionParameters) align 8) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare hidden void @ZSTD_adjustCParams_internal(ptr dead_on_unwind noalias writable sret(%struct.ZSTD_compressionParameters) align 4, ptr noundef byval(%struct.ZSTD_compressionParameters) align 8, i64 noundef, i64 noundef, i32 noundef, i32 noundef) local_unnamed_addr #2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 = { 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 = !{i64 0, i64 4, !6, i64 4, i64 4, !6, i64 8, i64 4, !6, i64 12, i64 4, !6, i64 16, i64 4, !6, i64 20, i64 4, !6, i64 24, i64 4, !6}
!6 = !{!7, !7, i64 0}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,SROAPass,SimplifyCFGPass