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Add internal padding to types where ptr size != int size

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This commit is contained in:
gingerBill
2023-04-20 11:55:18 +01:00
parent 84f966cb8f
commit cde442fa2c
2 changed files with 72 additions and 16 deletions
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60
src/llvm_backend_general.cpp
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@@ -1626,6 +1626,8 @@ gb_internal LLVMTypeRef lb_type_internal(lbModule *m, Type *type) {
GB_ASSERT(type != t_invalid);
bool bigger_int = build_context.word_size != build_context.int_size;
switch (type->kind) {
case Type_Basic:
switch (type->Basic.kind) {
@@ -1760,8 +1762,8 @@ gb_internal LLVMTypeRef lb_type_internal(lbModule *m, Type *type) {
return type;
}
case Basic_int: return LLVMIntTypeInContext(ctx, 8*cast(unsigned)build_context.word_size);
case Basic_uint: return LLVMIntTypeInContext(ctx, 8*cast(unsigned)build_context.word_size);
case Basic_int: return LLVMIntTypeInContext(ctx, 8*cast(unsigned)build_context.int_size);
case Basic_uint: return LLVMIntTypeInContext(ctx, 8*cast(unsigned)build_context.int_size);
case Basic_uintptr: return LLVMIntTypeInContext(ctx, 8*cast(unsigned)build_context.word_size);
@@ -1922,23 +1924,43 @@ gb_internal LLVMTypeRef lb_type_internal(lbModule *m, Type *type) {
case Type_Slice:
{
LLVMTypeRef fields[2] = {
LLVMPointerType(lb_type(m, type->Slice.elem), 0), // data
lb_type(m, t_int), // len
};
return LLVMStructTypeInContext(ctx, fields, 2, false);
if (bigger_int) {
LLVMTypeRef fields[3] = {
LLVMPointerType(lb_type(m, type->Slice.elem), 0), // data
lb_type_padding_filler(m, build_context.word_size, build_context.word_size), // padding
lb_type(m, t_int), // len
};
return LLVMStructTypeInContext(ctx, fields, gb_count_of(fields), false);
} else {
LLVMTypeRef fields[2] = {
LLVMPointerType(lb_type(m, type->Slice.elem), 0), // data
lb_type(m, t_int), // len
};
return LLVMStructTypeInContext(ctx, fields, gb_count_of(fields), false);
}
}
break;
case Type_DynamicArray:
{
LLVMTypeRef fields[4] = {
LLVMPointerType(lb_type(m, type->DynamicArray.elem), 0), // data
lb_type(m, t_int), // len
lb_type(m, t_int), // cap
lb_type(m, t_allocator), // allocator
};
return LLVMStructTypeInContext(ctx, fields, 4, false);
if (bigger_int) {
LLVMTypeRef fields[5] = {
LLVMPointerType(lb_type(m, type->DynamicArray.elem), 0), // data
lb_type_padding_filler(m, build_context.word_size, build_context.word_size), // padding
lb_type(m, t_int), // len
lb_type(m, t_int), // cap
lb_type(m, t_allocator), // allocator
};
return LLVMStructTypeInContext(ctx, fields, gb_count_of(fields), false);
} else {
LLVMTypeRef fields[4] = {
LLVMPointerType(lb_type(m, type->DynamicArray.elem), 0), // data
lb_type(m, t_int), // len
lb_type(m, t_int), // cap
lb_type(m, t_allocator), // allocator
};
return LLVMStructTypeInContext(ctx, fields, gb_count_of(fields), false);
}
}
break;
@@ -2145,9 +2167,17 @@ gb_internal LLVMTypeRef lb_type_internal(lbModule *m, Type *type) {
case Type_SoaPointer:
{
unsigned field_count = 2;
if (bigger_int) {
field_count = 3;
}
LLVMTypeRef *fields = gb_alloc_array(permanent_allocator(), LLVMTypeRef, field_count);
fields[0] = LLVMPointerType(lb_type(m, type->Pointer.elem), 0);
fields[1] = LLVMIntTypeInContext(ctx, 8*cast(unsigned)build_context.word_size);
if (bigger_int) {
fields[1] = lb_type_padding_filler(m, build_context.word_size, build_context.word_size);
fields[2] = LLVMIntTypeInContext(ctx, 8*cast(unsigned)build_context.int_size);
} else {
fields[1] = LLVMIntTypeInContext(ctx, 8*cast(unsigned)build_context.int_size);
}
return LLVMStructTypeInContext(ctx, fields, field_count, false);
}

28
src/llvm_backend_utility.cpp
View File

@@ -929,7 +929,33 @@ gb_internal lbStructFieldRemapping lb_get_struct_remapping(lbModule *m, Type *t)
gb_internal i32 lb_convert_struct_index(lbModule *m, Type *t, i32 index) {
if (t->kind == Type_Struct) {
auto field_remapping = lb_get_struct_remapping(m, t);
index = field_remapping[index];
return field_remapping[index];
} else if (build_context.word_size != build_context.int_size) {
switch (t->kind) {
case Type_Slice:
GB_ASSERT(build_context.word_size*2 == build_context.int_size);
switch (index) {
case 0: return 0; // data
case 1: return 2; // len
}
break;
case Type_DynamicArray:
GB_ASSERT(build_context.word_size*2 == build_context.int_size);
switch (index) {
case 0: return 0; // data
case 1: return 2; // len
case 2: return 3; // cap
case 3: return 4; // allocator
}
break;
case Type_SoaPointer:
GB_ASSERT(build_context.word_size*2 == build_context.int_size);
switch (index) {
case 0: return 0; // data
case 1: return 2; // offset
}
break;
}
}
return index;
}