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Added simd_extract_msbs intrinsic.

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Barinzaya
2024-10-15 18:13:35 -04:00
parent d23453811d
commit 33a3aab791
5 changed files with 64 additions and 0 deletions
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24
src/llvm_backend_proc.cpp
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@@ -1564,6 +1564,30 @@ gb_internal lbValue lb_build_builtin_simd_proc(lbProcedure *p, Ast *expr, TypeAn
return res;
}
case BuiltinProc_simd_extract_msbs:
{
Type *vt = arg0.type;
GB_ASSERT(vt->kind == Type_SimdVector);
i64 elem_bits = 8*type_size_of(elem);
i64 num_elems = get_array_type_count(vt);
LLVMTypeRef word_type = lb_type(m, elem);
LLVMValueRef shift_value = llvm_splat_int(num_elems, word_type, elem_bits - 1);
LLVMValueRef broadcast_value = LLVMBuildAShr(p->builder, arg0.value, shift_value, "");
LLVMTypeRef bitvec_type = LLVMVectorType(LLVMInt1TypeInContext(m->ctx), (unsigned)num_elems);
LLVMValueRef bitvec_value = LLVMBuildTrunc(p->builder, broadcast_value, bitvec_type, "");
LLVMTypeRef mask_type = LLVMIntTypeInContext(m->ctx, (unsigned)num_elems);
LLVMValueRef mask_value = LLVMBuildBitCast(p->builder, bitvec_value, mask_type, "");
LLVMTypeRef result_type = lb_type(m, res.type);
res.value = LLVMBuildZExtOrBitCast(p->builder, mask_value, result_type, "");
return res;
}
case BuiltinProc_simd_shuffle:
{