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remove volatileStore builtin; add volatile pointers

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closes #238
This commit is contained in:
Andrew Kelley 2017-02-04 21:49:27 -05:00
parent 0d7abc6368
commit 419e75eb23
10 changed files with 219 additions and 178 deletions
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2
doc/langref.md
View File

@ -143,7 +143,7 @@ ContainerInitBody = list(StructLiteralField, ",") | list(Expression, ",")
StructLiteralField = "." Symbol "=" Expression
PrefixOp = "!" | "-" | "~" | "*" | ("&" option("const")) | "?" | "%" | "%%" | "??" | "-%"
PrefixOp = "!" | "-" | "~" | "*" | ("&" option("const") option("volatile")) | "?" | "%" | "%%" | "??" | "-%"
PrimaryExpression = Number | String | CharLiteral | KeywordLiteral | GroupedExpression | GotoExpression | BlockExpression | Symbol | ("@" Symbol FnCallExpression) | ArrayType | (option("extern") FnProto) | AsmExpression | ("error" "." Symbol) | ContainerDecl

17
src/all_types.hpp
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@ -490,6 +490,8 @@ enum PrefixOp {
PrefixOpNegationWrap,
PrefixOpAddressOf,
PrefixOpConstAddressOf,
PrefixOpVolatileAddressOf,
PrefixOpConstVolatileAddressOf,
PrefixOpDereference,
PrefixOpMaybe,
PrefixOpError,
@ -806,6 +808,7 @@ bool fn_type_id_eql(FnTypeId *a, FnTypeId *b);
struct TypeTableEntryPointer {
TypeTableEntry *child_type;
bool is_const;
bool is_volatile;
};
struct TypeTableEntryInt {
@ -991,7 +994,7 @@ struct TypeTableEntry {
} data;
// use these fields to make sure we don't duplicate type table entries for the same type
TypeTableEntry *pointer_parent[2];
TypeTableEntry *pointer_parent[2][2]; // [0 - mut, 1 - const][0 - normal, 1 - volatile]
TypeTableEntry *unknown_size_array_parent[2];
HashMap<uint64_t, TypeTableEntry *, uint64_hash, uint64_eq> arrays_by_size;
TypeTableEntry *maybe_parent;
@ -1113,7 +1116,6 @@ enum BuiltinFnId {
BuiltinFnIdCanImplicitCast,
BuiltinFnIdSetGlobalAlign,
BuiltinFnIdSetGlobalSection,
BuiltinFnIdVolatileStore,
};
struct BuiltinFnEntry {
@ -1692,7 +1694,6 @@ struct IrInstructionStorePtr {
IrInstruction *ptr;
IrInstruction *value;
bool is_volatile;
};
struct IrInstructionFieldPtr {
@ -1943,6 +1944,7 @@ struct IrInstructionRef {
IrInstruction *value;
LLVMValueRef tmp_ptr;
bool is_const;
bool is_volatile;
};
struct IrInstructionMinValue {
@ -2062,6 +2064,7 @@ struct IrInstructionMemset {
IrInstruction *dest_ptr;
IrInstruction *byte;
IrInstruction *count;
bool is_volatile;
};
struct IrInstructionMemcpy {
@ -2070,6 +2073,7 @@ struct IrInstructionMemcpy {
IrInstruction *dest_ptr;
IrInstruction *src_ptr;
IrInstruction *count;
bool is_volatile;
};
struct IrInstructionSlice {
@ -2267,13 +2271,6 @@ struct IrInstructionSetGlobalSection {
IrInstruction *value;
};
enum LValPurpose {
LValPurposeNone,
LValPurposeAssign,
LValPurposeAddressOf,
LValPurposeAddressOfConst,
};
static const size_t slice_ptr_index = 0;
static const size_t slice_len_index = 1;

71
src/analyze.cpp
View File

@ -269,43 +269,48 @@ TypeTableEntry *get_smallest_unsigned_int_type(CodeGen *g, uint64_t x) {
return get_int_type(g, false, bits_needed_for_unsigned(x));
}
TypeTableEntry *get_pointer_to_type(CodeGen *g, TypeTableEntry *child_type, bool is_const) {
TypeTableEntry *get_pointer_to_type_volatile(CodeGen *g, TypeTableEntry *child_type, bool is_const, bool is_volatile) {
assert(child_type->id != TypeTableEntryIdInvalid);
TypeTableEntry **parent_pointer = &child_type->pointer_parent[(is_const ? 1 : 0)];
if (*parent_pointer) {
TypeTableEntry **parent_pointer = &child_type->pointer_parent[(is_const ? 1 : 0)][(is_volatile ? 1 : 0)];
if (*parent_pointer)
return *parent_pointer;
type_ensure_zero_bits_known(g, child_type);
TypeTableEntry *entry = new_type_table_entry(TypeTableEntryIdPointer);
const char *const_str = is_const ? "const " : "";
const char *volatile_str = is_volatile ? "volatile " : "";
buf_resize(&entry->name, 0);
buf_appendf(&entry->name, "&%s%s%s", const_str, volatile_str, buf_ptr(&child_type->name));
TypeTableEntry *canon_child_type = get_underlying_type(child_type);
assert(canon_child_type->id != TypeTableEntryIdInvalid);
entry->zero_bits = !type_has_bits(canon_child_type);
if (!entry->zero_bits) {
entry->type_ref = LLVMPointerType(child_type->type_ref, 0);
uint64_t debug_size_in_bits = 8*LLVMStoreSizeOfType(g->target_data_ref, entry->type_ref);
uint64_t debug_align_in_bits = 8*LLVMABISizeOfType(g->target_data_ref, entry->type_ref);
assert(child_type->di_type);
entry->di_type = ZigLLVMCreateDebugPointerType(g->dbuilder, child_type->di_type,
debug_size_in_bits, debug_align_in_bits, buf_ptr(&entry->name));
} else {
type_ensure_zero_bits_known(g, child_type);
TypeTableEntry *entry = new_type_table_entry(TypeTableEntryIdPointer);
const char *const_str = is_const ? "const " : "";
buf_resize(&entry->name, 0);
buf_appendf(&entry->name, "&%s%s", const_str, buf_ptr(&child_type->name));
TypeTableEntry *canon_child_type = get_underlying_type(child_type);
assert(canon_child_type->id != TypeTableEntryIdInvalid);
entry->zero_bits = !type_has_bits(canon_child_type);
if (!entry->zero_bits) {
entry->type_ref = LLVMPointerType(child_type->type_ref, 0);
uint64_t debug_size_in_bits = 8*LLVMStoreSizeOfType(g->target_data_ref, entry->type_ref);
uint64_t debug_align_in_bits = 8*LLVMABISizeOfType(g->target_data_ref, entry->type_ref);
assert(child_type->di_type);
entry->di_type = ZigLLVMCreateDebugPointerType(g->dbuilder, child_type->di_type,
debug_size_in_bits, debug_align_in_bits, buf_ptr(&entry->name));
} else {
entry->di_type = g->builtin_types.entry_void->di_type;
}
entry->data.pointer.child_type = child_type;
entry->data.pointer.is_const = is_const;
*parent_pointer = entry;
return entry;
entry->di_type = g->builtin_types.entry_void->di_type;
}
entry->data.pointer.child_type = child_type;
entry->data.pointer.is_const = is_const;
entry->data.pointer.is_volatile = is_volatile;
*parent_pointer = entry;
return entry;
}
TypeTableEntry *get_pointer_to_type(CodeGen *g, TypeTableEntry *child_type, bool is_const) {
return get_pointer_to_type_volatile(g, child_type, is_const, false);
}
TypeTableEntry *get_maybe_type(CodeGen *g, TypeTableEntry *child_type) {

1
src/analyze.hpp
View File

@ -15,6 +15,7 @@ ErrorMsg *add_node_error(CodeGen *g, AstNode *node, Buf *msg);
ErrorMsg *add_error_note(CodeGen *g, ErrorMsg *parent_msg, AstNode *node, Buf *msg);
TypeTableEntry *new_type_table_entry(TypeTableEntryId id);
TypeTableEntry *get_pointer_to_type(CodeGen *g, TypeTableEntry *child_type, bool is_const);
TypeTableEntry *get_pointer_to_type_volatile(CodeGen *g, TypeTableEntry *child_type, bool is_const, bool is_volatile);
bool is_node_void_expr(AstNode *node);
uint64_t type_size(CodeGen *g, TypeTableEntry *type_entry);
TypeTableEntry **get_int_type_ptr(CodeGen *g, bool is_signed, size_t size_in_bits);

2
src/ast_render.cpp
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@ -68,6 +68,8 @@ static const char *prefix_op_str(PrefixOp prefix_op) {
case PrefixOpBinNot: return "~";
case PrefixOpAddressOf: return "&";
case PrefixOpConstAddressOf: return "&const ";
case PrefixOpVolatileAddressOf: return "&volatile ";
case PrefixOpConstVolatileAddressOf: return "&const volatile ";
case PrefixOpDereference: return "*";
case PrefixOpMaybe: return "?";
case PrefixOpError: return "%";

22
src/codegen.cpp
View File

@ -1294,18 +1294,19 @@ static LLVMValueRef ir_render_store_ptr(CodeGen *g, IrExecutable *executable, Ir
LLVMValueRef value = ir_llvm_value(g, instruction->value);
assert(instruction->ptr->value.type->id == TypeTableEntryIdPointer);
TypeTableEntry *op1_type = instruction->ptr->value.type->data.pointer.child_type;
TypeTableEntry *ptr_type = get_underlying_type(instruction->ptr->value.type);
TypeTableEntry *child_type = get_underlying_type(ptr_type->data.pointer.child_type);
if (!type_has_bits(op1_type)) {
if (!type_has_bits(child_type)) {
return nullptr;
}
if (handle_is_ptr(op1_type)) {
return gen_struct_memcpy(g, value, ptr, op1_type);
if (handle_is_ptr(child_type)) {
return gen_struct_memcpy(g, value, ptr, child_type);
}
LLVMValueRef llvm_instruction = LLVMBuildStore(g->builder, value, ptr);
LLVMSetVolatile(llvm_instruction, instruction->is_volatile);
LLVMSetVolatile(llvm_instruction, ptr_type->data.pointer.is_volatile);
return nullptr;
}
@ -1803,12 +1804,15 @@ static LLVMValueRef ir_render_memset(CodeGen *g, IrExecutable *executable, IrIns
LLVMValueRef dest_ptr_casted = LLVMBuildBitCast(g->builder, dest_ptr, ptr_u8, "");
LLVMValueRef is_volatile = instruction->is_volatile ?
LLVMConstAllOnes(LLVMInt1Type()) : LLVMConstNull(LLVMInt1Type());
LLVMValueRef params[] = {
dest_ptr_casted, // dest pointer
char_val, // source pointer
len_val, // byte count
LLVMConstInt(LLVMInt32Type(), 1, false), // align in bytes
LLVMConstNull(LLVMInt1Type()), // is volatile
is_volatile,
};
LLVMBuildCall(g->builder, g->memset_fn_val, params, 5, "");
@ -1825,12 +1829,15 @@ static LLVMValueRef ir_render_memcpy(CodeGen *g, IrExecutable *executable, IrIns
LLVMValueRef dest_ptr_casted = LLVMBuildBitCast(g->builder, dest_ptr, ptr_u8, "");
LLVMValueRef src_ptr_casted = LLVMBuildBitCast(g->builder, src_ptr, ptr_u8, "");
LLVMValueRef is_volatile = instruction->is_volatile ?
LLVMConstAllOnes(LLVMInt1Type()) : LLVMConstNull(LLVMInt1Type());
LLVMValueRef params[] = {
dest_ptr_casted, // dest pointer
src_ptr_casted, // source pointer
len_val, // byte count
LLVMConstInt(LLVMInt32Type(), 1, false), // align in bytes
LLVMConstNull(LLVMInt1Type()), // is volatile
is_volatile,
};
LLVMBuildCall(g->builder, g->memcpy_fn_val, params, 5, "");
@ -3690,7 +3697,6 @@ static void define_builtin_fns(CodeGen *g) {
create_builtin_fn(g, BuiltinFnIdAlloca, "alloca", 2);
create_builtin_fn(g, BuiltinFnIdSetGlobalAlign, "setGlobalAlign", 2);
create_builtin_fn(g, BuiltinFnIdSetGlobalSection, "setGlobalSection", 2);
create_builtin_fn(g, BuiltinFnIdVolatileStore, "volatileStore", 2);
}
static void init(CodeGen *g, Buf *source_path) {

250
src/ir.cpp
View File

@ -44,9 +44,21 @@ struct IrAnalyze {
IrBasicBlock *const_predecessor_bb;
};
struct LVal {
bool is_ptr;
bool is_const;
bool is_volatile;
};
static const LVal LVAL_NONE = { false, false, false };
static const LVal LVAL_PTR = { true, false, false };
static LVal make_lval_addr(bool is_const, bool is_volatile) {
return { true, is_const, is_volatile };
}
static IrInstruction *ir_gen_node(IrBuilder *irb, AstNode *node, Scope *scope);
static IrInstruction *ir_gen_node_extra(IrBuilder *irb, AstNode *node, Scope *scope,
LValPurpose lval);
static IrInstruction *ir_gen_node_extra(IrBuilder *irb, AstNode *node, Scope *scope, LVal lval);
static TypeTableEntry *ir_analyze_instruction(IrAnalyze *ira, IrInstruction *instruction);
static IrInstruction *ir_implicit_cast(IrAnalyze *ira, IrInstruction *value, TypeTableEntry *expected_type);
@ -1042,14 +1054,13 @@ static IrInstruction *ir_build_unreachable_from(IrBuilder *irb, IrInstruction *o
}
static IrInstruction *ir_build_store_ptr(IrBuilder *irb, Scope *scope, AstNode *source_node,
IrInstruction *ptr, IrInstruction *value, bool is_volatile)
IrInstruction *ptr, IrInstruction *value)
{
IrInstructionStorePtr *instruction = ir_build_instruction<IrInstructionStorePtr>(irb, scope, source_node);
instruction->base.value.special = ConstValSpecialStatic;
instruction->base.value.type = irb->codegen->builtin_types.entry_void;
instruction->ptr = ptr;
instruction->value = value;
instruction->is_volatile = is_volatile;
ir_ref_instruction(ptr, irb->current_basic_block);
ir_ref_instruction(value, irb->current_basic_block);
@ -1058,10 +1069,10 @@ static IrInstruction *ir_build_store_ptr(IrBuilder *irb, Scope *scope, AstNode *
}
static IrInstruction *ir_build_store_ptr_from(IrBuilder *irb, IrInstruction *old_instruction,
IrInstruction *ptr, IrInstruction *value, bool is_volatile)
IrInstruction *ptr, IrInstruction *value)
{
IrInstruction *new_instruction = ir_build_store_ptr(irb, old_instruction->scope,
old_instruction->source_node, ptr, value, is_volatile);
old_instruction->source_node, ptr, value);
ir_link_new_instruction(new_instruction, old_instruction);
return new_instruction;
}
@ -1450,11 +1461,12 @@ static IrInstruction *ir_build_array_len(IrBuilder *irb, Scope *scope, AstNode *
}
static IrInstruction *ir_build_ref(IrBuilder *irb, Scope *scope, AstNode *source_node, IrInstruction *value,
bool is_const)
bool is_const, bool is_volatile)
{
IrInstructionRef *instruction = ir_build_instruction<IrInstructionRef>(irb, scope, source_node);
instruction->value = value;
instruction->is_const = is_const;
instruction->is_volatile = is_volatile;
ir_ref_instruction(value, irb->current_basic_block);
@ -1462,10 +1474,10 @@ static IrInstruction *ir_build_ref(IrBuilder *irb, Scope *scope, AstNode *source
}
static IrInstruction *ir_build_ref_from(IrBuilder *irb, IrInstruction *old_instruction, IrInstruction *value,
bool is_const)
bool is_const, bool is_volatile)
{
IrInstruction *new_instruction = ir_build_ref(irb, old_instruction->scope, old_instruction->source_node,
value, is_const);
value, is_const, is_volatile);
ir_link_new_instruction(new_instruction, old_instruction);
return new_instruction;
}
@ -2980,7 +2992,7 @@ static ScopeDeferExpr *get_scope_defer_expr(Scope *scope) {
return nullptr;
}
static IrInstruction *ir_gen_return(IrBuilder *irb, Scope *scope, AstNode *node, LValPurpose lval) {
static IrInstruction *ir_gen_return(IrBuilder *irb, Scope *scope, AstNode *node, LVal lval) {
assert(node->type == NodeTypeReturnExpr);
FnTableEntry *fn_entry = exec_fn_entry(irb->exec);
@ -3068,7 +3080,7 @@ static IrInstruction *ir_gen_return(IrBuilder *irb, Scope *scope, AstNode *node,
case ReturnKindError:
{
assert(expr_node);
IrInstruction *err_union_ptr = ir_gen_node_extra(irb, expr_node, scope, LValPurposeAddressOf);
IrInstruction *err_union_ptr = ir_gen_node_extra(irb, expr_node, scope, LVAL_PTR);
if (err_union_ptr == irb->codegen->invalid_instruction)
return irb->codegen->invalid_instruction;
IrInstruction *err_union_val = ir_build_load_ptr(irb, scope, node, err_union_ptr);
@ -3086,7 +3098,7 @@ static IrInstruction *ir_gen_return(IrBuilder *irb, Scope *scope, AstNode *node,
ir_set_cursor_at_end(irb, continue_block);
IrInstruction *unwrapped_ptr = ir_build_unwrap_err_payload(irb, scope, node, err_union_ptr, false);
if (lval != LValPurposeNone)
if (lval.is_ptr)
return unwrapped_ptr;
else
return ir_build_load_ptr(irb, scope, node, unwrapped_ptr);
@ -3094,7 +3106,7 @@ static IrInstruction *ir_gen_return(IrBuilder *irb, Scope *scope, AstNode *node,
case ReturnKindMaybe:
{
assert(expr_node);
IrInstruction *maybe_val_ptr = ir_gen_node_extra(irb, expr_node, scope, LValPurposeAddressOf);
IrInstruction *maybe_val_ptr = ir_gen_node_extra(irb, expr_node, scope, LVAL_PTR);
if (maybe_val_ptr == irb->codegen->invalid_instruction)
return irb->codegen->invalid_instruction;
IrInstruction *maybe_val = ir_build_load_ptr(irb, scope, node, maybe_val_ptr);
@ -3112,7 +3124,7 @@ static IrInstruction *ir_gen_return(IrBuilder *irb, Scope *scope, AstNode *node,
ir_set_cursor_at_end(irb, continue_block);
IrInstruction *unwrapped_ptr = ir_build_unwrap_maybe(irb, scope, node, maybe_val_ptr, false);
if (lval != LValPurposeNone)
if (lval.is_ptr)
return unwrapped_ptr;
else
return ir_build_load_ptr(irb, scope, node, unwrapped_ptr);
@ -3293,18 +3305,18 @@ static IrInstruction *ir_gen_bin_op_id(IrBuilder *irb, Scope *scope, AstNode *no
}
static IrInstruction *ir_gen_assign(IrBuilder *irb, Scope *scope, AstNode *node) {
IrInstruction *lvalue = ir_gen_node_extra(irb, node->data.bin_op_expr.op1, scope, LValPurposeAssign);
IrInstruction *lvalue = ir_gen_node_extra(irb, node->data.bin_op_expr.op1, scope, LVAL_PTR);
IrInstruction *rvalue = ir_gen_node(irb, node->data.bin_op_expr.op2, scope);
if (lvalue == irb->codegen->invalid_instruction || rvalue == irb->codegen->invalid_instruction)
return irb->codegen->invalid_instruction;
ir_build_store_ptr(irb, scope, node, lvalue, rvalue, false);
ir_build_store_ptr(irb, scope, node, lvalue, rvalue);
return ir_build_const_void(irb, scope, node);
}
static IrInstruction *ir_gen_assign_op(IrBuilder *irb, Scope *scope, AstNode *node, IrBinOp op_id) {
IrInstruction *lvalue = ir_gen_node_extra(irb, node->data.bin_op_expr.op1, scope, LValPurposeAssign);
IrInstruction *lvalue = ir_gen_node_extra(irb, node->data.bin_op_expr.op1, scope, LVAL_PTR);
if (lvalue == irb->codegen->invalid_instruction)
return lvalue;
IrInstruction *op1 = ir_build_load_ptr(irb, scope, node->data.bin_op_expr.op1, lvalue);
@ -3312,7 +3324,7 @@ static IrInstruction *ir_gen_assign_op(IrBuilder *irb, Scope *scope, AstNode *no
if (op2 == irb->codegen->invalid_instruction)
return op2;
IrInstruction *result = ir_build_bin_op(irb, scope, node, op_id, op1, op2, true);
ir_build_store_ptr(irb, scope, node, lvalue, result, false);
ir_build_store_ptr(irb, scope, node, lvalue, result);
return ir_build_const_void(irb, scope, node);
}
@ -3406,7 +3418,7 @@ static IrInstruction *ir_gen_maybe_ok_or(IrBuilder *irb, Scope *parent_scope, As
AstNode *op1_node = node->data.bin_op_expr.op1;
AstNode *op2_node = node->data.bin_op_expr.op2;
IrInstruction *maybe_ptr = ir_gen_node_extra(irb, op1_node, parent_scope, LValPurposeAddressOf);
IrInstruction *maybe_ptr = ir_gen_node_extra(irb, op1_node, parent_scope, LVAL_PTR);
if (maybe_ptr == irb->codegen->invalid_instruction)
return irb->codegen->invalid_instruction;
@ -3574,9 +3586,9 @@ static IrInstruction *ir_gen_var_literal(IrBuilder *irb, Scope *scope, AstNode *
}
static IrInstruction *ir_gen_decl_ref(IrBuilder *irb, AstNode *source_node, Tld *tld,
LValPurpose lval, Scope *scope)
LVal lval, Scope *scope)
{
resolve_top_level_decl(irb->codegen, tld, lval != LValPurposeNone);
resolve_top_level_decl(irb->codegen, tld, lval.is_ptr);
if (tld->resolution == TldResolutionInvalid)
return irb->codegen->invalid_instruction;
@ -3587,8 +3599,8 @@ static IrInstruction *ir_gen_decl_ref(IrBuilder *irb, AstNode *source_node, Tld
{
TldVar *tld_var = (TldVar *)tld;
VariableTableEntry *var = tld_var->var;
IrInstruction *var_ptr = ir_build_var_ptr(irb, scope, source_node, var, lval == LValPurposeAddressOfConst);
if (lval != LValPurposeNone)
IrInstruction *var_ptr = ir_build_var_ptr(irb, scope, source_node, var, !lval.is_ptr || lval.is_const);
if (lval.is_ptr)
return var_ptr;
else
return ir_build_load_ptr(irb, scope, source_node, var_ptr);
@ -3599,8 +3611,8 @@ static IrInstruction *ir_gen_decl_ref(IrBuilder *irb, AstNode *source_node, Tld
FnTableEntry *fn_entry = tld_fn->fn_entry;
assert(fn_entry->type_entry);
IrInstruction *ref_instruction = ir_build_const_fn(irb, scope, source_node, fn_entry);
if (lval != LValPurposeNone)
return ir_build_ref(irb, scope, source_node, ref_instruction, true);
if (lval.is_ptr)
return ir_build_ref(irb, scope, source_node, ref_instruction, true, false);
else
return ref_instruction;
}
@ -3609,8 +3621,8 @@ static IrInstruction *ir_gen_decl_ref(IrBuilder *irb, AstNode *source_node, Tld
TldTypeDef *tld_typedef = (TldTypeDef *)tld;
TypeTableEntry *typedef_type = tld_typedef->type_entry;
IrInstruction *ref_instruction = ir_build_const_type(irb, scope, source_node, typedef_type, false);
if (lval != LValPurposeNone)
return ir_build_ref(irb, scope, source_node, ref_instruction, true);
if (lval.is_ptr)
return ir_build_ref(irb, scope, source_node, ref_instruction, true, false);
else
return ref_instruction;
}
@ -3618,7 +3630,7 @@ static IrInstruction *ir_gen_decl_ref(IrBuilder *irb, AstNode *source_node, Tld
zig_unreachable();
}
static IrInstruction *ir_gen_symbol(IrBuilder *irb, Scope *scope, AstNode *node, LValPurpose lval) {
static IrInstruction *ir_gen_symbol(IrBuilder *irb, Scope *scope, AstNode *node, LVal lval) {
assert(node->type == NodeTypeSymbol);
Buf *variable_name = node->data.symbol_expr.symbol;
@ -3626,8 +3638,8 @@ static IrInstruction *ir_gen_symbol(IrBuilder *irb, Scope *scope, AstNode *node,
auto primitive_table_entry = irb->codegen->primitive_type_table.maybe_get(variable_name);
if (primitive_table_entry) {
IrInstruction *value = ir_build_const_type(irb, scope, node, primitive_table_entry->value, false);
if (lval != LValPurposeNone) {
return ir_build_ref(irb, scope, node, value, lval == LValPurposeAddressOfConst);
if (lval.is_ptr) {
return ir_build_ref(irb, scope, node, value, lval.is_const, lval.is_volatile);
} else {
return value;
}
@ -3635,8 +3647,9 @@ static IrInstruction *ir_gen_symbol(IrBuilder *irb, Scope *scope, AstNode *node,
VariableTableEntry *var = find_variable(irb->codegen, scope, variable_name);
if (var) {
IrInstruction *var_ptr = ir_build_var_ptr(irb, scope, node, var, lval == LValPurposeAddressOfConst);
if (lval != LValPurposeNone)
IrInstruction *var_ptr = ir_build_var_ptr(irb, scope, node, var,
!lval.is_ptr || lval.is_const);
if (lval.is_ptr)
return var_ptr;
else
return ir_build_load_ptr(irb, scope, node, var_ptr);
@ -3658,12 +3671,11 @@ static IrInstruction *ir_gen_symbol(IrBuilder *irb, Scope *scope, AstNode *node,
return irb->codegen->invalid_instruction;
}
static IrInstruction *ir_gen_array_access(IrBuilder *irb, Scope *scope, AstNode *node, LValPurpose lval) {
static IrInstruction *ir_gen_array_access(IrBuilder *irb, Scope *scope, AstNode *node, LVal lval) {
assert(node->type == NodeTypeArrayAccessExpr);
AstNode *array_ref_node = node->data.array_access_expr.array_ref_expr;
IrInstruction *array_ref_instruction = ir_gen_node_extra(irb, array_ref_node, scope,
LValPurposeAddressOf);
IrInstruction *array_ref_instruction = ir_gen_node_extra(irb, array_ref_node, scope, LVAL_PTR);
if (array_ref_instruction == irb->codegen->invalid_instruction)
return array_ref_instruction;
@ -3674,25 +3686,24 @@ static IrInstruction *ir_gen_array_access(IrBuilder *irb, Scope *scope, AstNode
IrInstruction *ptr_instruction = ir_build_elem_ptr(irb, scope, node, array_ref_instruction,
subscript_instruction, true);
if (lval != LValPurposeNone)
if (lval.is_ptr)
return ptr_instruction;
return ir_build_load_ptr(irb, scope, node, ptr_instruction);
}
static IrInstruction *ir_gen_field_access(IrBuilder *irb, Scope *scope, AstNode *node, LValPurpose lval) {
static IrInstruction *ir_gen_field_access(IrBuilder *irb, Scope *scope, AstNode *node, LVal lval) {
assert(node->type == NodeTypeFieldAccessExpr);
AstNode *container_ref_node = node->data.field_access_expr.struct_expr;
Buf *field_name = node->data.field_access_expr.field_name;
IrInstruction *container_ref_instruction = ir_gen_node_extra(irb, container_ref_node, scope,
LValPurposeAddressOf);
IrInstruction *container_ref_instruction = ir_gen_node_extra(irb, container_ref_node, scope, LVAL_PTR);
if (container_ref_instruction == irb->codegen->invalid_instruction)
return container_ref_instruction;
IrInstruction *ptr_instruction = ir_build_field_ptr(irb, scope, node, container_ref_instruction, field_name);
if (lval != LValPurposeNone)
if (lval.is_ptr)
return ptr_instruction;
return ir_build_load_ptr(irb, scope, node, ptr_instruction);
@ -4199,20 +4210,6 @@ static IrInstruction *ir_gen_builtin_fn_call(IrBuilder *irb, Scope *scope, AstNo
return ir_build_set_global_section(irb, scope, node, tld_var, arg1_value);
}
}
case BuiltinFnIdVolatileStore:
{
AstNode *arg0_node = node->data.fn_call_expr.params.at(0);
IrInstruction *arg0_value = ir_gen_node(irb, arg0_node, scope);
if (arg0_value == irb->codegen->invalid_instruction)
return arg0_value;
AstNode *arg1_node = node->data.fn_call_expr.params.at(1);
IrInstruction *arg1_value = ir_gen_node(irb, arg1_node, scope);
if (arg1_value == irb->codegen->invalid_instruction)
return arg1_value;
return ir_build_store_ptr(irb, scope, node, arg0_value, arg1_value, true);
}
}
zig_unreachable();
}
@ -4295,7 +4292,7 @@ static IrInstruction *ir_gen_if_bool_expr(IrBuilder *irb, Scope *scope, AstNode
return ir_build_phi(irb, scope, node, 2, incoming_blocks, incoming_values);
}
static IrInstruction *ir_gen_prefix_op_id_lval(IrBuilder *irb, Scope *scope, AstNode *node, IrUnOp op_id, LValPurpose lval) {
static IrInstruction *ir_gen_prefix_op_id_lval(IrBuilder *irb, Scope *scope, AstNode *node, IrUnOp op_id, LVal lval) {
assert(node->type == NodeTypePrefixOpExpr);
AstNode *expr_node = node->data.prefix_op_expr.primary_expr;
@ -4307,38 +4304,38 @@ static IrInstruction *ir_gen_prefix_op_id_lval(IrBuilder *irb, Scope *scope, Ast
}
static IrInstruction *ir_gen_prefix_op_id(IrBuilder *irb, Scope *scope, AstNode *node, IrUnOp op_id) {
return ir_gen_prefix_op_id_lval(irb, scope, node, op_id, LValPurposeNone);
return ir_gen_prefix_op_id_lval(irb, scope, node, op_id, LVAL_NONE);
}
static IrInstruction *ir_lval_wrap(IrBuilder *irb, Scope *scope, IrInstruction *value, LValPurpose lval) {
if (lval == LValPurposeNone)
static IrInstruction *ir_lval_wrap(IrBuilder *irb, Scope *scope, IrInstruction *value, LVal lval) {
if (!lval.is_ptr)
return value;
if (value == irb->codegen->invalid_instruction)
return value;
// We needed a pointer to a value, but we got a value. So we create
// an instruction which just makes a const pointer of it.
return ir_build_ref(irb, scope, value->source_node, value, true);
return ir_build_ref(irb, scope, value->source_node, value, true, false);
}
static IrInstruction *ir_gen_address_of(IrBuilder *irb, Scope *scope, AstNode *node, bool is_const, LValPurpose lval) {
static IrInstruction *ir_gen_address_of(IrBuilder *irb, Scope *scope, AstNode *node,
bool is_const, bool is_volatile, LVal lval)
{
assert(node->type == NodeTypePrefixOpExpr);
AstNode *expr_node = node->data.prefix_op_expr.primary_expr;
IrInstruction *value = ir_gen_node_extra(irb, expr_node, scope,
is_const ? LValPurposeAddressOfConst : LValPurposeAddressOf);
IrInstruction *value = ir_gen_node_extra(irb, expr_node, scope, make_lval_addr(is_const, is_volatile));
if (value == irb->codegen->invalid_instruction)
return value;
return ir_lval_wrap(irb, scope, value, lval);
}
static IrInstruction *ir_gen_err_assert_ok(IrBuilder *irb, Scope *scope, AstNode *node, LValPurpose lval) {
static IrInstruction *ir_gen_err_assert_ok(IrBuilder *irb, Scope *scope, AstNode *node, LVal lval) {
assert(node->type == NodeTypePrefixOpExpr);
AstNode *expr_node = node->data.prefix_op_expr.primary_expr;
IrInstruction *err_union_ptr = ir_gen_node_extra(irb, expr_node, scope, LValPurposeAddressOf);
IrInstruction *err_union_ptr = ir_gen_node_extra(irb, expr_node, scope, LVAL_PTR);
if (err_union_ptr == irb->codegen->invalid_instruction)
return irb->codegen->invalid_instruction;
@ -4346,25 +4343,25 @@ static IrInstruction *ir_gen_err_assert_ok(IrBuilder *irb, Scope *scope, AstNode
if (payload_ptr == irb->codegen->invalid_instruction)
return irb->codegen->invalid_instruction;
if (lval == LValPurposeNone)
return ir_build_load_ptr(irb, scope, node, payload_ptr);
else
if (lval.is_ptr)
return payload_ptr;
return ir_build_load_ptr(irb, scope, node, payload_ptr);
}
static IrInstruction *ir_gen_maybe_assert_ok(IrBuilder *irb, Scope *scope, AstNode *node, LValPurpose lval) {
static IrInstruction *ir_gen_maybe_assert_ok(IrBuilder *irb, Scope *scope, AstNode *node, LVal lval) {
assert(node->type == NodeTypePrefixOpExpr);
AstNode *expr_node = node->data.prefix_op_expr.primary_expr;
IrInstruction *maybe_ptr = ir_gen_node_extra(irb, expr_node, scope, LValPurposeAddressOf);
IrInstruction *maybe_ptr = ir_gen_node_extra(irb, expr_node, scope, LVAL_PTR);
if (maybe_ptr == irb->codegen->invalid_instruction)
return irb->codegen->invalid_instruction;
IrInstruction *unwrapped_ptr = ir_build_unwrap_maybe(irb, scope, node, maybe_ptr, true);
if (lval == LValPurposeNone)
return ir_build_load_ptr(irb, scope, node, unwrapped_ptr);
else
if (lval.is_ptr)
return unwrapped_ptr;
return ir_build_load_ptr(irb, scope, node, unwrapped_ptr);
}
static IrInstruction *ir_gen_bool_not(IrBuilder *irb, Scope *scope, AstNode *node) {
@ -4378,7 +4375,7 @@ static IrInstruction *ir_gen_bool_not(IrBuilder *irb, Scope *scope, AstNode *nod
return ir_build_bool_not(irb, scope, node, value);
}
static IrInstruction *ir_gen_prefix_op_expr(IrBuilder *irb, Scope *scope, AstNode *node, LValPurpose lval) {
static IrInstruction *ir_gen_prefix_op_expr(IrBuilder *irb, Scope *scope, AstNode *node, LVal lval) {
assert(node->type == NodeTypePrefixOpExpr);
PrefixOp prefix_op = node->data.prefix_op_expr.prefix_op;
@ -4395,9 +4392,13 @@ static IrInstruction *ir_gen_prefix_op_expr(IrBuilder *irb, Scope *scope, AstNod
case PrefixOpNegationWrap:
return ir_lval_wrap(irb, scope, ir_gen_prefix_op_id(irb, scope, node, IrUnOpNegationWrap), lval);
case PrefixOpAddressOf:
return ir_gen_address_of(irb, scope, node, false, lval);
return ir_gen_address_of(irb, scope, node, false, false, lval);
case PrefixOpConstAddressOf:
return ir_gen_address_of(irb, scope, node, true, lval);
return ir_gen_address_of(irb, scope, node, true, false, lval);
case PrefixOpVolatileAddressOf:
return ir_gen_address_of(irb, scope, node, false, true, lval);
case PrefixOpConstVolatileAddressOf:
return ir_gen_address_of(irb, scope, node, true, true, lval);
case PrefixOpDereference:
return ir_gen_prefix_op_id_lval(irb, scope, node, IrUnOpDereference, lval);
case PrefixOpMaybe:
@ -4559,7 +4560,7 @@ static IrInstruction *ir_gen_for_expr(IrBuilder *irb, Scope *parent_scope, AstNo
}
assert(elem_node->type == NodeTypeSymbol);
IrInstruction *array_val_ptr = ir_gen_node_extra(irb, array_node, parent_scope, LValPurposeAddressOf);
IrInstruction *array_val_ptr = ir_gen_node_extra(irb, array_node, parent_scope, LVAL_PTR);
if (array_val_ptr == irb->codegen->invalid_instruction)
return array_val_ptr;
@ -4627,7 +4628,7 @@ static IrInstruction *ir_gen_for_expr(IrBuilder *irb, Scope *parent_scope, AstNo
} else {
elem_val = ir_build_load_ptr(irb, child_scope, node, elem_ptr);
}
ir_mark_gen(ir_build_store_ptr(irb, child_scope, node, elem_var_ptr, elem_val, false));
ir_mark_gen(ir_build_store_ptr(irb, child_scope, node, elem_var_ptr, elem_val));
LoopStackItem *loop_stack_item = irb->loop_stack.add_one();
loop_stack_item->break_block = end_block;
@ -4641,7 +4642,7 @@ static IrInstruction *ir_gen_for_expr(IrBuilder *irb, Scope *parent_scope, AstNo
ir_set_cursor_at_end(irb, continue_block);
IrInstruction *new_index_val = ir_build_bin_op(irb, child_scope, node, IrBinOpAdd, index_val, one, false);
ir_mark_gen(ir_build_store_ptr(irb, child_scope, node, index_ptr, new_index_val, false));
ir_mark_gen(ir_build_store_ptr(irb, child_scope, node, index_ptr, new_index_val));
ir_build_br(irb, child_scope, node, cond_block, is_comptime);
ir_set_cursor_at_end(irb, end_block);
@ -4783,7 +4784,7 @@ static IrInstruction *ir_gen_if_var_expr(IrBuilder *irb, Scope *scope, AstNode *
AstNode *else_node = node->data.if_var_expr.else_node;
bool var_is_ptr = node->data.if_var_expr.var_is_ptr;
IrInstruction *maybe_val_ptr = ir_gen_node_extra(irb, expr_node, scope, LValPurposeAddressOf);
IrInstruction *maybe_val_ptr = ir_gen_node_extra(irb, expr_node, scope, LVAL_PTR);
if (maybe_val_ptr == irb->codegen->invalid_instruction)
return maybe_val_ptr;
@ -4859,7 +4860,7 @@ static IrInstruction *ir_gen_try_expr(IrBuilder *irb, Scope *scope, AstNode *nod
Buf *var_symbol = node->data.try_expr.var_symbol;
Buf *err_symbol = node->data.try_expr.err_symbol;
IrInstruction *err_val_ptr = ir_gen_node_extra(irb, target_node, scope, LValPurposeAddressOf);
IrInstruction *err_val_ptr = ir_gen_node_extra(irb, target_node, scope, LVAL_PTR);
if (err_val_ptr == irb->codegen->invalid_instruction)
return err_val_ptr;
@ -4987,7 +4988,7 @@ static IrInstruction *ir_gen_switch_expr(IrBuilder *irb, Scope *scope, AstNode *
assert(node->type == NodeTypeSwitchExpr);
AstNode *target_node = node->data.switch_expr.expr;
IrInstruction *target_value_ptr = ir_gen_node_extra(irb, target_node, scope, LValPurposeAddressOf);
IrInstruction *target_value_ptr = ir_gen_node_extra(irb, target_node, scope, LVAL_PTR);
if (target_value_ptr == irb->codegen->invalid_instruction)
return target_value_ptr;
IrInstruction *target_value = ir_build_switch_target(irb, scope, node, target_value_ptr);
@ -5175,7 +5176,7 @@ static IrInstruction *ir_gen_goto(IrBuilder *irb, Scope *scope, AstNode *node) {
return ir_build_unreachable(irb, scope, node);
}
static IrInstruction *ir_gen_comptime(IrBuilder *irb, Scope *parent_scope, AstNode *node, LValPurpose lval) {
static IrInstruction *ir_gen_comptime(IrBuilder *irb, Scope *parent_scope, AstNode *node, LVal lval) {
assert(node->type == NodeTypeCompTime);
Scope *child_scope = create_comptime_scope(node, parent_scope);
@ -5285,7 +5286,7 @@ static IrInstruction *ir_gen_err_ok_or(IrBuilder *irb, Scope *parent_scope, AstN
AstNode *op2_node = node->data.unwrap_err_expr.op2;
AstNode *var_node = node->data.unwrap_err_expr.symbol;
IrInstruction *err_union_ptr = ir_gen_node_extra(irb, op1_node, parent_scope, LValPurposeAddressOf);
IrInstruction *err_union_ptr = ir_gen_node_extra(irb, op1_node, parent_scope, LVAL_PTR);
if (err_union_ptr == irb->codegen->invalid_instruction)
return irb->codegen->invalid_instruction;
@ -5423,7 +5424,7 @@ static IrInstruction *ir_gen_fn_proto(IrBuilder *irb, Scope *parent_scope, AstNo
}
static IrInstruction *ir_gen_node_raw(IrBuilder *irb, AstNode *node, Scope *scope,
LValPurpose lval)
LVal lval)
{
assert(scope);
switch (node->type) {
@ -5522,16 +5523,14 @@ static IrInstruction *ir_gen_node_raw(IrBuilder *irb, AstNode *node, Scope *scop
zig_unreachable();
}
static IrInstruction *ir_gen_node_extra(IrBuilder *irb, AstNode *node, Scope *scope,
LValPurpose lval)
{
static IrInstruction *ir_gen_node_extra(IrBuilder *irb, AstNode *node, Scope *scope, LVal lval) {
IrInstruction *result = ir_gen_node_raw(irb, node, scope, lval);
irb->exec->invalid = irb->exec->invalid || (result == irb->codegen->invalid_instruction);
return result;
}
static IrInstruction *ir_gen_node(IrBuilder *irb, AstNode *node, Scope *scope) {
return ir_gen_node_extra(irb, node, scope, LValPurposeNone);
return ir_gen_node_extra(irb, node, scope, LVAL_NONE);
}
static bool ir_goto_pass2(IrBuilder *irb) {
@ -5589,7 +5588,7 @@ bool ir_gen(CodeGen *codegen, AstNode *node, Scope *scope, IrExecutable *ir_exec
// Entry block gets a reference because we enter it to begin.
ir_ref_bb(irb->current_basic_block);
IrInstruction *result = ir_gen_node_extra(irb, node, scope, LValPurposeNone);
IrInstruction *result = ir_gen_node_extra(irb, node, scope, LVAL_NONE);
assert(result);
if (irb->exec->invalid)
return false;
@ -6178,7 +6177,7 @@ static TypeTableEntry *ir_analyze_void(IrAnalyze *ira, IrInstruction *instructio
static TypeTableEntry *ir_analyze_const_ptr(IrAnalyze *ira, IrInstruction *instruction,
ConstExprValue *pointee, TypeTableEntry *pointee_type, bool depends_on_compile_var,
ConstPtrSpecial special, bool ptr_is_const)
ConstPtrSpecial special, bool ptr_is_const, bool ptr_is_volatile)
{
if (pointee_type->id == TypeTableEntryIdMetaType) {
TypeTableEntry *type_entry = pointee->data.x_type;
@ -6190,10 +6189,12 @@ static TypeTableEntry *ir_analyze_const_ptr(IrAnalyze *ira, IrInstruction *instr
ConstExprValue *const_val = ir_build_const_from(ira, instruction,
depends_on_compile_var || pointee->depends_on_compile_var);
type_ensure_zero_bits_known(ira->codegen, type_entry);
const_val->data.x_type = get_pointer_to_type(ira->codegen, type_entry, ptr_is_const);
const_val->data.x_type = get_pointer_to_type_volatile(ira->codegen, type_entry,
ptr_is_const, ptr_is_volatile);
return pointee_type;
} else {
TypeTableEntry *ptr_type = get_pointer_to_type(ira->codegen, pointee_type, ptr_is_const);
TypeTableEntry *ptr_type = get_pointer_to_type_volatile(ira->codegen, pointee_type,
ptr_is_const, ptr_is_volatile);
ConstExprValue *const_val = ir_build_const_from(ira, instruction,
depends_on_compile_var || pointee->depends_on_compile_var);
const_val->data.x_ptr.base_ptr = pointee;
@ -6433,7 +6434,9 @@ static IrInstruction *ir_analyze_err_wrap_code(IrAnalyze *ira, IrInstruction *so
return result;
}
static IrInstruction *ir_analyze_cast_ref(IrAnalyze *ira, IrInstruction *source_instr, IrInstruction *value, TypeTableEntry *wanted_type) {
static IrInstruction *ir_analyze_cast_ref(IrAnalyze *ira, IrInstruction *source_instr,
IrInstruction *value, TypeTableEntry *wanted_type)
{
if (instr_is_comptime(value)) {
ConstExprValue *val = ir_resolve_const(ira, value, UndefBad);
if (!val)
@ -6454,7 +6457,7 @@ static IrInstruction *ir_analyze_cast_ref(IrAnalyze *ira, IrInstruction *source_
return load_ptr_inst->ptr;
} else {
IrInstruction *new_instruction = ir_build_ref(&ira->new_irb, source_instr->scope,
source_instr->source_node, value, true);
source_instr->source_node, value, true, false);
new_instruction->value.type = wanted_type;
TypeTableEntry *child_type = wanted_type->data.pointer.child_type;
@ -6997,7 +7000,7 @@ static IrInstruction *ir_get_deref(IrAnalyze *ira, IrInstruction *source_instruc
}
static TypeTableEntry *ir_analyze_ref(IrAnalyze *ira, IrInstruction *source_instruction, IrInstruction *value,
bool is_const)
bool is_const, bool is_volatile)
{
if (value->value.type->id == TypeTableEntryIdInvalid)
return ira->codegen->builtin_types.entry_invalid;
@ -7007,13 +7010,14 @@ static TypeTableEntry *ir_analyze_ref(IrAnalyze *ira, IrInstruction *source_inst
if (!val)
return ira->codegen->builtin_types.entry_invalid;
return ir_analyze_const_ptr(ira, source_instruction, val, value->value.type,
value->value.depends_on_compile_var, ConstPtrSpecialNone, is_const);
value->value.depends_on_compile_var, ConstPtrSpecialNone, is_const, is_volatile);
}
TypeTableEntry *ptr_type = get_pointer_to_type(ira->codegen, value->value.type, true);
TypeTableEntry *ptr_type = get_pointer_to_type_volatile(ira->codegen, value->value.type, is_const, is_volatile);
FnTableEntry *fn_entry = exec_fn_entry(ira->new_irb.exec);
assert(fn_entry);
IrInstruction *new_instruction = ir_build_ref_from(&ira->new_irb, source_instruction, value, is_const);
IrInstruction *new_instruction = ir_build_ref_from(&ira->new_irb, source_instruction,
value, is_const, is_volatile);
fn_entry->alloca_list.append(new_instruction);
return ptr_type;
}
@ -8700,7 +8704,7 @@ static TypeTableEntry *ir_analyze_var_ptr(IrAnalyze *ira, IrInstruction *instruc
bool is_const = (var->value.type->id == TypeTableEntryIdMetaType) ? is_const_ptr : var->src_is_const;
depends_on_compile_var = mem_slot->depends_on_compile_var || depends_on_compile_var || is_comptime;
return ir_analyze_const_ptr(ira, instruction, mem_slot, var->value.type,
depends_on_compile_var, ptr_special, is_const);
depends_on_compile_var, ptr_special, is_const, false);
} else {
ir_build_var_ptr_from(&ira->new_irb, instruction, var, false);
type_ensure_zero_bits_known(ira->codegen, var->value.type);
@ -8786,7 +8790,8 @@ static TypeTableEntry *ir_analyze_instruction_elem_ptr(IrAnalyze *ira, IrInstruc
return ir_analyze_var_ptr(ira, &elem_ptr_instruction->base, var, true, depends_on_compile_var);
} else {
return ir_analyze_const_ptr(ira, &elem_ptr_instruction->base, &ira->codegen->const_void_val,
ira->codegen->builtin_types.entry_void, depends_on_compile_var, ConstPtrSpecialNone, true);
ira->codegen->builtin_types.entry_void, depends_on_compile_var, ConstPtrSpecialNone,
true, false);
}
} else {
ir_add_error_node(ira, elem_ptr_instruction->base.source_node,
@ -8894,7 +8899,7 @@ static TypeTableEntry *ir_analyze_container_member_access_inner(IrAnalyze *ira,
bool depends_on_compile_var = container_ptr->value.depends_on_compile_var;
IrInstruction *bound_fn_value = ir_build_const_bound_fn(&ira->new_irb, field_ptr_instruction->base.scope,
field_ptr_instruction->base.source_node, fn_entry, container_ptr, depends_on_compile_var);
return ir_analyze_ref(ira, &field_ptr_instruction->base, bound_fn_value, true);
return ir_analyze_ref(ira, &field_ptr_instruction->base, bound_fn_value, true, false);
}
}
ir_add_error_node(ira, field_ptr_instruction->base.source_node,
@ -8911,6 +8916,7 @@ static TypeTableEntry *ir_analyze_container_field_ptr(IrAnalyze *ira, Buf *field
assert(container_ptr->value.type->id == TypeTableEntryIdPointer);
bool is_const = container_ptr->value.type->data.pointer.is_const;
bool is_volatile = container_ptr->value.type->data.pointer.is_volatile;
if (bare_type->id == TypeTableEntryIdStruct) {
if (bare_type->data.structure.is_invalid)
return ira->codegen->builtin_types.entry_invalid;
@ -8929,12 +8935,12 @@ static TypeTableEntry *ir_analyze_container_field_ptr(IrAnalyze *ira, Buf *field
bool depends_on_compile_var = field_val->depends_on_compile_var ||
struct_val->depends_on_compile_var || ptr_val->depends_on_compile_var;
return ir_analyze_const_ptr(ira, &field_ptr_instruction->base, field_val,
field_val->type, depends_on_compile_var, ConstPtrSpecialNone, is_const);
field_val->type, depends_on_compile_var, ConstPtrSpecialNone, is_const, is_volatile);
}
}
}
ir_build_struct_field_ptr_from(&ira->new_irb, &field_ptr_instruction->base, container_ptr, field);
return get_pointer_to_type(ira->codegen, field->type_entry, is_const);
return get_pointer_to_type_volatile(ira->codegen, field->type_entry, is_const, is_volatile);
} else {
return ir_analyze_container_member_access_inner(ira, bare_type, field_name,
field_ptr_instruction, container_ptr, container_type);
@ -8946,7 +8952,7 @@ static TypeTableEntry *ir_analyze_container_field_ptr(IrAnalyze *ira, Buf *field
TypeEnumField *field = find_enum_type_field(bare_type, field_name);
if (field) {
ir_build_enum_field_ptr_from(&ira->new_irb, &field_ptr_instruction->base, container_ptr, field);
return get_pointer_to_type(ira->codegen, field->type_entry, is_const);
return get_pointer_to_type_volatile(ira->codegen, field->type_entry, is_const, is_volatile);
} else {
return ir_analyze_container_member_access_inner(ira, bare_type, field_name,
field_ptr_instruction, container_ptr, container_type);
@ -8992,8 +8998,9 @@ static TypeTableEntry *ir_analyze_decl_ref(IrAnalyze *ira, IrInstruction *source
const_val->data.x_fn = fn_entry;
bool ptr_is_const = true;
bool ptr_is_volatile = false;
return ir_analyze_const_ptr(ira, source_instruction, const_val, fn_entry->type_entry,
depends_on_compile_var, ConstPtrSpecialNone, ptr_is_const);
depends_on_compile_var, ConstPtrSpecialNone, ptr_is_const, ptr_is_volatile);
}
case TldIdTypeDef:
{
@ -9008,8 +9015,9 @@ static TypeTableEntry *ir_analyze_decl_ref(IrAnalyze *ira, IrInstruction *source
const_val->data.x_type = tld_typedef->type_entry;
bool ptr_is_const = true;
bool ptr_is_volatile = false;
return ir_analyze_const_ptr(ira, source_instruction, const_val, ira->codegen->builtin_types.entry_type,
depends_on_compile_var, ConstPtrSpecialNone, ptr_is_const);
depends_on_compile_var, ConstPtrSpecialNone, ptr_is_const, ptr_is_volatile);
}
}
zig_unreachable();
@ -9051,8 +9059,9 @@ static TypeTableEntry *ir_analyze_instruction_field_ptr(IrAnalyze *ira, IrInstru
TypeTableEntry *usize = ira->codegen->builtin_types.entry_usize;
bool ptr_is_const = true;
bool ptr_is_volatile = false;
return ir_analyze_const_ptr(ira, &field_ptr_instruction->base, len_val,
usize, false, ConstPtrSpecialNone, ptr_is_const);
usize, false, ConstPtrSpecialNone, ptr_is_const, ptr_is_volatile);
} else {
ir_add_error_node(ira, source_node,
buf_sprintf("no member named '%s' in '%s'", buf_ptr(field_name),
@ -9074,8 +9083,9 @@ static TypeTableEntry *ir_analyze_instruction_field_ptr(IrAnalyze *ira, IrInstru
TypeTableEntry *usize = ira->codegen->builtin_types.entry_usize;
bool ptr_is_const = true;
bool ptr_is_volatile = false;
return ir_analyze_const_ptr(ira, &field_ptr_instruction->base, len_val,
usize, false, ConstPtrSpecialNone, ptr_is_const);
usize, false, ConstPtrSpecialNone, ptr_is_const, ptr_is_volatile);
} else {
ir_add_error_node(ira, source_node,
buf_sprintf("no member named '%s' in '%s'", buf_ptr(field_name),
@ -9111,15 +9121,17 @@ static TypeTableEntry *ir_analyze_instruction_field_ptr(IrAnalyze *ira, IrInstru
if (field) {
if (field->type_entry->id == TypeTableEntryIdVoid) {
bool ptr_is_const = true;
bool ptr_is_volatile = false;
return ir_analyze_const_ptr(ira, &field_ptr_instruction->base,
create_const_enum_tag(child_type, field->value), child_type, depends_on_compile_var,
ConstPtrSpecialNone, ptr_is_const);
ConstPtrSpecialNone, ptr_is_const, ptr_is_volatile);
} else {
bool ptr_is_const = true;
bool ptr_is_volatile = false;
return ir_analyze_const_ptr(ira, &field_ptr_instruction->base,
create_const_unsigned_negative(child_type->data.enumeration.tag_type, field->value, false),
child_type->data.enumeration.tag_type, depends_on_compile_var,
ConstPtrSpecialNone, ptr_is_const);
ConstPtrSpecialNone, ptr_is_const, ptr_is_volatile);
}
}
}
@ -9142,8 +9154,9 @@ static TypeTableEntry *ir_analyze_instruction_field_ptr(IrAnalyze *ira, IrInstru
const_val->data.x_pure_err = err_table_entry->value;
bool ptr_is_const = true;
bool ptr_is_volatile = false;
return ir_analyze_const_ptr(ira, &field_ptr_instruction->base, const_val,
child_type, depends_on_compile_var, ConstPtrSpecialNone, ptr_is_const);
child_type, depends_on_compile_var, ConstPtrSpecialNone, ptr_is_const, ptr_is_volatile);
}
ir_add_error(ira, &field_ptr_instruction->base,
@ -9152,17 +9165,19 @@ static TypeTableEntry *ir_analyze_instruction_field_ptr(IrAnalyze *ira, IrInstru
} else if (child_type->id == TypeTableEntryIdInt) {
if (buf_eql_str(field_name, "bit_count")) {
bool ptr_is_const = true;
bool ptr_is_volatile = false;
return ir_analyze_const_ptr(ira, &field_ptr_instruction->base,
create_const_unsigned_negative(ira->codegen->builtin_types.entry_num_lit_int,
child_type->data.integral.bit_count, false),
ira->codegen->builtin_types.entry_num_lit_int, depends_on_compile_var,
ConstPtrSpecialNone, ptr_is_const);
ConstPtrSpecialNone, ptr_is_const, ptr_is_volatile);
} else if (buf_eql_str(field_name, "is_signed")) {
bool ptr_is_const = true;
bool ptr_is_volatile = false;
return ir_analyze_const_ptr(ira, &field_ptr_instruction->base,
create_const_bool(ira->codegen, child_type->data.integral.is_signed),
ira->codegen->builtin_types.entry_bool, depends_on_compile_var,
ConstPtrSpecialNone, ptr_is_const);
ConstPtrSpecialNone, ptr_is_const, ptr_is_volatile);
} else {
ir_add_error(ira, &field_ptr_instruction->base,
buf_sprintf("type '%s' has no member called '%s'",
@ -9288,12 +9303,11 @@ static TypeTableEntry *ir_analyze_instruction_store_ptr(IrAnalyze *ira, IrInstru
}
new_ptr_inst->value.type = ptr->value.type;
ir_build_store_ptr(&ira->new_irb, store_ptr_instruction->base.scope,
store_ptr_instruction->base.source_node, new_ptr_inst, casted_value, false);
store_ptr_instruction->base.source_node, new_ptr_inst, casted_value);
return ir_analyze_void(ira, &store_ptr_instruction->base);
}
ir_build_store_ptr_from(&ira->new_irb, &store_ptr_instruction->base, ptr, casted_value,
store_ptr_instruction->is_volatile);
ir_build_store_ptr_from(&ira->new_irb, &store_ptr_instruction->base, ptr, casted_value);
return ira->codegen->builtin_types.entry_void;
}
@ -10337,7 +10351,7 @@ static TypeTableEntry *ir_analyze_instruction_array_len(IrAnalyze *ira,
static TypeTableEntry *ir_analyze_instruction_ref(IrAnalyze *ira, IrInstructionRef *ref_instruction) {
IrInstruction *value = ref_instruction->value->other;
return ir_analyze_ref(ira, &ref_instruction->base, value, ref_instruction->is_const);
return ir_analyze_ref(ira, &ref_instruction->base, value, ref_instruction->is_const, ref_instruction->is_volatile);
}
static TypeTableEntry *ir_analyze_container_init_fields(IrAnalyze *ira, IrInstruction *instruction,

6
src/ir_print.cpp
View File

@ -299,9 +299,6 @@ static void ir_print_store_ptr(IrPrint *irp, IrInstructionStorePtr *instruction)
ir_print_var_instruction(irp, instruction->ptr);
fprintf(irp->f, " = ");
ir_print_other_instruction(irp, instruction->value);
if (instruction->is_volatile) {
fprintf(irp->f, " // volatile");
}
}
static void ir_print_typeof(IrPrint *irp, IrInstructionTypeOf *instruction) {
@ -512,7 +509,8 @@ static void ir_print_array_len(IrPrint *irp, IrInstructionArrayLen *instruction)
static void ir_print_ref(IrPrint *irp, IrInstructionRef *instruction) {
const char *const_str = instruction->is_const ? "const " : "";
fprintf(irp->f, "%sref ", const_str);
const char *volatile_str = instruction->is_volatile ? "volatile " : "";
fprintf(irp->f, "%s%sref ", const_str, volatile_str);
ir_print_other_instruction(irp, instruction->value);
}

17
src/parser.cpp
View File

@ -996,7 +996,7 @@ static PrefixOp tok_to_prefix_op(Token *token) {
/*
PrefixOpExpression : PrefixOp PrefixOpExpression | SuffixOpExpression
PrefixOp = "!" | "-" | "~" | "*" | ("&" option("const")) | "?" | "%" | "%%" | "??" | "-%"
PrefixOp = "!" | "-" | "~" | "*" | ("&" option("const") option("volatile")) | "?" | "%" | "%%" | "??" | "-%"
*/
static AstNode *ast_parse_prefix_op_expr(ParseContext *pc, size_t *token_index, bool mandatory) {
Token *token = &pc->tokens->at(*token_index);
@ -1036,10 +1036,19 @@ static AstNode *ast_parse_prefix_op_expr(ParseContext *pc, size_t *token_index,
}
if (prefix_op == PrefixOpAddressOf) {
Token *token = &pc->tokens->at(*token_index);
if (token->id == TokenIdKeywordConst) {
Token *const_or_volatile_tok = &pc->tokens->at(*token_index);
if (const_or_volatile_tok->id == TokenIdKeywordConst) {
*token_index += 1;
Token *volatile_token = &pc->tokens->at(*token_index);
if (volatile_token->id == TokenIdKeywordVolatile) {
*token_index += 1;
prefix_op = PrefixOpConstVolatileAddressOf;
} else {
prefix_op = PrefixOpConstAddressOf;
}
} else if (const_or_volatile_tok->id == TokenIdKeywordVolatile) {
prefix_op = PrefixOpVolatileAddressOf;
*token_index += 1;
prefix_op = PrefixOpConstAddressOf;
}
}

9
test/cases/misc.zig
View File

@ -566,3 +566,12 @@ fn typeName() {
assert(str.eql(@typeName(&usize), "&usize"));
}
}
fn volatileLoadAndStore() {
@setFnTest(this);
var number: i32 = 1234;
const ptr = &volatile number;
*ptr += 1;
assert(*ptr == 1235);
}