https://github.com/JuliaLang/julia
Tip revision: 0ac23fd5653d3e495789ef68442f2c4ee547b55f authored by Gabriel Baraldi on 20 October 2023, 00:45:30 UTC
Add stack protector when compiling with asserts
Add stack protector when compiling with asserts
Tip revision: 0ac23fd
abi_ppc64le.cpp
//===-- abi_ppc64le.cpp - Power v2 ABI description ---------------------*- C++ -*-===//
//
// LDC – the LLVM D compiler
//
// This file is distributed under the BSD-style LDC license:
//
// Copyright (c) 2007-2012 LDC Team.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the LDC Team nor the names of its contributors may be
// used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//===----------------------------------------------------------------------===//
//
// The ABI implementation used for 64 bit little-endian PowerPC targets.
//
// The PowerOpen 64bit ELF v2 ABI can be found here:
// https://members.openpowerfoundation.org/document/dl/576
//===----------------------------------------------------------------------===//
struct ABI_PPC64leLayout : AbiLayout {
// count the homogeneous floating aggregate size (saturating at max count of 8)
unsigned isHFA(jl_datatype_t *ty, jl_datatype_t **ty0, bool *hva) const
{
if (jl_datatype_size(ty) > 128 || ty->layout->npointers || ty->layout->haspadding)
return 9;
size_t i, l = ty->layout->nfields;
// handle homogeneous float aggregates
if (l == 0) {
if (ty != jl_float64_type && ty != jl_float32_type)
return 9;
*hva = false;
if (*ty0 == NULL)
*ty0 = ty;
else if (*hva || jl_datatype_size(ty) != jl_datatype_size(*ty0))
return 9;
return 1;
}
// handle homogeneous vector aggregates
jl_datatype_t *fld0 = (jl_datatype_t*)jl_field_type(ty, 0);
if (!jl_is_datatype(fld0) || ty->name == jl_vecelement_typename)
return 9;
if (fld0->name == jl_vecelement_typename) {
if (!jl_is_primitivetype(jl_tparam0(fld0)) || jl_datatype_size(ty) > 16)
return 9;
if (l != 1 && l != 2 && l != 4 && l != 8 && l != 16)
return 9;
*hva = true;
if (*ty0 == NULL)
*ty0 = ty;
else if (!*hva || jl_datatype_size(ty) != jl_datatype_size(*ty0))
return 9;
for (i = 1; i < l; i++) {
jl_datatype_t *fld = (jl_datatype_t*)jl_field_type(ty, i);
if (fld != fld0)
return 9;
}
return 1;
}
// recurse through other struct types
int n = 0;
for (i = 0; i < l; i++) {
jl_datatype_t *fld = (jl_datatype_t*)jl_field_type(ty, i);
if (!jl_is_datatype(fld) || ((jl_datatype_t*)fld)->layout == NULL || jl_is_layout_opaque(((jl_datatype_t*)fld)->layout))
return 9;
n += isHFA((jl_datatype_t*)fld, ty0, hva);
if (n > 8)
return 9;
}
return n;
}
bool use_sret(jl_datatype_t *dt, LLVMContext &ctx) override
{
jl_datatype_t *ty0 = NULL;
bool hva = false;
if (jl_datatype_size(dt) > 16 && isHFA(dt, &ty0, &hva) > 8)
return true;
return false;
}
bool needPassByRef(jl_datatype_t *dt, AttrBuilder &ab, LLVMContext &ctx, Type *Ty) override
{
jl_datatype_t *ty0 = NULL;
bool hva = false;
if (jl_datatype_size(dt) > 64 && isHFA(dt, &ty0, &hva) > 8) {
ab.addByValAttr(Ty);
return true;
}
return false;
}
Type *preferred_llvm_type(jl_datatype_t *dt, bool isret, LLVMContext &ctx) const override
{
// Arguments are either scalar or passed by value
size_t size = jl_datatype_size(dt);
// don't need to change bitstypes
if (!jl_datatype_nfields(dt))
return NULL;
// legalize this into [n x f32/f64]
jl_datatype_t *ty0 = NULL;
bool hva = false;
int hfa = isHFA(dt, &ty0, &hva);
if (hfa <= 8) {
if (ty0 == jl_float32_type) {
return ArrayType::get(llvm::Type::getFloatTy(ctx), hfa);
}
else if (ty0 == jl_float64_type) {
return ArrayType::get(llvm::Type::getDoubleTy(ctx), hfa);
}
else {
jl_datatype_t *vecty = (jl_datatype_t*)jl_field_type(ty0, 0);
assert(jl_is_datatype(vecty) && vecty->name == jl_vecelement_typename);
Type *ety = bitstype_to_llvm(jl_tparam0(vecty), ctx);
Type *vty = FixedVectorType::get(ety, jl_datatype_nfields(ty0));
return ArrayType::get(vty, hfa);
}
}
// rewrite integer-sized (non-HFA) struct to an array
// the bitsize of the integer gives the desired alignment
if (size > 8) {
if (jl_datatype_align(dt) <= 8) {
Type *T_int64 = Type::getInt64Ty(ctx);
return ArrayType::get(T_int64, (size + 7) / 8);
}
else {
Type *T_int128 = Type::getIntNTy(ctx, 128);
return ArrayType::get(T_int128, (size + 15) / 16);
}
}
return Type::getIntNTy(ctx, size * 8);
}
};