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Generate memset and memmove intrinsics from ccalls #43580

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merged 4 commits into from
Jan 8, 2022
Merged

Generate memset and memmove intrinsics from ccalls #43580

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8ee150d
Generate memset intrinsic from memset ccalls
Dec 28, 2021
896f9de
Use int8 in memset instead of int32
Dec 28, 2021
41bb3c2
Handle memmove intrinsic as well
Dec 29, 2021
8f2ea80
Update src/ccall.cpp
pchintalapudi Jan 8, 2022
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36 changes: 36 additions & 0 deletions src/ccall.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1718,6 +1718,42 @@ static jl_cgval_t emit_ccall(jl_codectx_t &ctx, jl_value_t **args, size_t nargs)
return rt == (jl_value_t*)jl_nothing_type ? ghostValue(jl_nothing_type) :
mark_or_box_ccall_result(ctx, destp, retboxed, rt, unionall, static_rt);
}
else if (is_libjulia_func(memset) && (rt == (jl_value_t*)jl_nothing_type || jl_is_cpointer_type(rt))) {
const jl_cgval_t &dst = argv[0];
const jl_cgval_t &val = argv[1];
const jl_cgval_t &n = argv[2];
Value *destp = emit_unbox(ctx, T_size, dst, (jl_value_t*)jl_voidpointer_type);
Value *val32 = emit_unbox(ctx, T_int32, val, (jl_value_t*)jl_uint32_type);
Value *val8 = ctx.builder.CreateTrunc(val32, T_int8, "memset_val");
ctx.builder.CreateMemSet(
emit_inttoptr(ctx, destp, T_pint8),
val8,
emit_unbox(ctx, T_size, n, (jl_value_t*)jl_ulong_type),
MaybeAlign(1)
);
JL_GC_POP();
return rt == (jl_value_t*)jl_nothing_type ? ghostValue(jl_nothing_type) :
mark_or_box_ccall_result(ctx, destp, retboxed, rt, unionall, static_rt);
}
else if (is_libjulia_func(memmove) && (rt == (jl_value_t*)jl_nothing_type || jl_is_cpointer_type(rt))) {
const jl_cgval_t &dst = argv[0];
const jl_cgval_t &src = argv[1];
const jl_cgval_t &n = argv[2];
Value *destp = emit_unbox(ctx, T_size, dst, (jl_value_t*)jl_voidpointer_type);

ctx.builder.CreateMemMove(
emit_inttoptr(ctx, destp, T_pint8),
MaybeAlign(1),
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emit_inttoptr(ctx,
emit_unbox(ctx, T_size, src, (jl_value_t*)jl_voidpointer_type),
T_pint8),
MaybeAlign(0),
emit_unbox(ctx, T_size, n, (jl_value_t*)jl_ulong_type),
false);
JL_GC_POP();
return rt == (jl_value_t*)jl_nothing_type ? ghostValue(jl_nothing_type) :
mark_or_box_ccall_result(ctx, destp, retboxed, rt, unionall, static_rt);
}
else if (is_libjulia_func(jl_object_id) && nccallargs == 1 &&
rt == (jl_value_t*)jl_ulong_type) {
jl_cgval_t val = argv[0];
Expand Down