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hook up result locations for union initializations

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```zig
export fn entry() void {
    var x = Foo{ .bar = bar() };
}
```

```llvm
define void @entry() #2 !dbg !44 {
Entry:
  %x = alloca %Foo, align 4
  %0 = getelementptr inbounds %Foo, %Foo* %x, i32 0, i32 1, !dbg !68
  store i1 true, i1* %0, align 1, !dbg !68
  %1 = getelementptr inbounds %Foo, %Foo* %x, i32 0, i32 0, !dbg !68
  %2 = bitcast { i32, [4 x i8] }* %1 to %Bar*, !dbg !68
  call fastcc void @bar(%Bar* sret %2), !dbg !68
  call void @llvm.dbg.declare(metadata %Foo* %x, metadata !48, metadata !DIExpression()), !dbg !69
  ret void, !dbg !70
}
```
This commit is contained in:
Andrew Kelley 2019-06-10 11:15:32 -04:00
parent 4e2b2822f1
commit 1a51bf6304
No known key found for this signature in database
GPG Key ID: 7C5F548F728501A9
5 changed files with 56 additions and 128 deletions
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1
BRANCH_TODO
View File

@ -1,7 +1,6 @@
Scratch pad for stuff to do before merging master
=================================================
* union initializations
* bitCast
look at all the ir_gen_node ir_gen_node_extra calls and make sure result locations are properly propagated

13
src/all_types.hpp
View File

@ -2204,7 +2204,6 @@ enum IrInstructionId {
IrInstructionIdResizeSlice,
IrInstructionIdContainerInitList,
IrInstructionIdContainerInitFields,
IrInstructionIdUnionInit,
IrInstructionIdUnreachable,
IrInstructionIdTypeOf,
IrInstructionIdSetCold,
@ -2520,6 +2519,7 @@ struct IrInstructionStorePtr {
struct IrInstructionFieldPtr {
IrInstruction base;
bool initializing;
IrInstruction *container_ptr;
Buf *field_name_buffer;
IrInstruction *field_name_expr;
@ -2536,9 +2536,9 @@ struct IrInstructionStructFieldPtr {
struct IrInstructionUnionFieldPtr {
IrInstruction base;
bool initializing;
IrInstruction *union_ptr;
TypeUnionField *field;
bool is_const;
};
struct IrInstructionElemPtr {
@ -2663,15 +2663,6 @@ struct IrInstructionContainerInitFields {
IrInstructionContainerInitFieldsField *fields;
};
struct IrInstructionUnionInit {
IrInstruction base;
ZigType *union_type;
TypeUnionField *field;
IrInstruction *init_value;
LLVMValueRef tmp_ptr;
};
struct IrInstructionUnreachable {
IrInstruction base;
};

49
src/codegen.cpp
View File

@ -3859,7 +3859,12 @@ static LLVMValueRef ir_render_union_field_ptr(CodeGen *g, IrExecutable *executab
return bitcasted_union_field_ptr;
}
if (ir_want_runtime_safety(g, &instruction->base)) {
if (instruction->initializing) {
LLVMValueRef tag_field_ptr = LLVMBuildStructGEP(g->builder, union_ptr, union_type->data.unionation.gen_tag_index, "");
LLVMValueRef tag_value = bigint_to_llvm_const(get_llvm_type(g, union_type->data.unionation.tag_type),
&field->enum_field->value);
gen_store_untyped(g, tag_value, tag_field_ptr, 0, false);
} else if (ir_want_runtime_safety(g, &instruction->base)) {
LLVMValueRef tag_field_ptr = LLVMBuildStructGEP(g->builder, union_ptr, union_type->data.unionation.gen_tag_index, "");
LLVMValueRef tag_value = gen_load_untyped(g, tag_field_ptr, 0, false, "");
@ -5035,43 +5040,6 @@ static LLVMValueRef ir_render_union_tag(CodeGen *g, IrExecutable *executable, Ir
return get_handle_value(g, tag_field_ptr, tag_type, ptr_type);
}
static LLVMValueRef ir_render_union_init(CodeGen *g, IrExecutable *executable, IrInstructionUnionInit *instruction) {
TypeUnionField *type_union_field = instruction->field;
if (!type_has_bits(type_union_field->type_entry))
return nullptr;
uint32_t field_align_bytes = get_abi_alignment(g, type_union_field->type_entry);
ZigType *ptr_type = get_pointer_to_type_extra(g, type_union_field->type_entry,
false, false, PtrLenSingle, field_align_bytes,
0, 0, false);
LLVMValueRef uncasted_union_ptr;
// Even if safety is off in this block, if the union type has the safety field, we have to populate it
// correctly. Otherwise safety code somewhere other than here could fail.
ZigType *union_type = instruction->union_type;
if (union_type->data.unionation.gen_tag_index != SIZE_MAX) {
LLVMValueRef tag_field_ptr = LLVMBuildStructGEP(g->builder, instruction->tmp_ptr,
union_type->data.unionation.gen_tag_index, "");
LLVMValueRef tag_value = bigint_to_llvm_const(get_llvm_type(g, union_type->data.unionation.tag_type),
&type_union_field->enum_field->value);
gen_store_untyped(g, tag_value, tag_field_ptr, 0, false);
uncasted_union_ptr = LLVMBuildStructGEP(g->builder, instruction->tmp_ptr,
(unsigned)union_type->data.unionation.gen_union_index, "");
} else {
uncasted_union_ptr = LLVMBuildStructGEP(g->builder, instruction->tmp_ptr, (unsigned)0, "");
}
LLVMValueRef field_ptr = LLVMBuildBitCast(g->builder, uncasted_union_ptr, get_llvm_type(g, ptr_type), "");
LLVMValueRef value = ir_llvm_value(g, instruction->init_value);
gen_assign_raw(g, field_ptr, ptr_type, value);
return instruction->tmp_ptr;
}
static LLVMValueRef ir_render_panic(CodeGen *g, IrExecutable *executable, IrInstructionPanic *instruction) {
gen_panic(g, ir_llvm_value(g, instruction->msg), get_cur_err_ret_trace_val(g, instruction->base.scope));
return nullptr;
@ -5659,8 +5627,6 @@ static LLVMValueRef ir_render_instruction(CodeGen *g, IrExecutable *executable,
return ir_render_err_wrap_payload(g, executable, (IrInstructionErrWrapPayload *)instruction);
case IrInstructionIdUnionTag:
return ir_render_union_tag(g, executable, (IrInstructionUnionTag *)instruction);
case IrInstructionIdUnionInit:
return ir_render_union_init(g, executable, (IrInstructionUnionInit *)instruction);
case IrInstructionIdPtrCastGen:
return ir_render_ptr_cast(g, executable, (IrInstructionPtrCastGen *)instruction);
case IrInstructionIdBitCastGen:
@ -6874,9 +6840,6 @@ static void do_code_gen(CodeGen *g) {
} else if (instruction->id == IrInstructionIdContainerInitList) {
IrInstructionContainerInitList *container_init_list_instruction = (IrInstructionContainerInitList *)instruction;
slot = &container_init_list_instruction->tmp_ptr;
} else if (instruction->id == IrInstructionIdUnionInit) {
IrInstructionUnionInit *union_init_instruction = (IrInstructionUnionInit *)instruction;
slot = &union_init_instruction->tmp_ptr;
} else if (instruction->id == IrInstructionIdSlice) {
IrInstructionSlice *slice_instruction = (IrInstructionSlice *)instruction;
slot = &slice_instruction->tmp_ptr;

109
src/ir.cpp
View File

@ -164,7 +164,7 @@ static IrInstruction *ir_implicit_cast(IrAnalyze *ira, IrInstruction *value, Zig
static IrInstruction *ir_get_deref(IrAnalyze *ira, IrInstruction *source_instruction, IrInstruction *ptr);
static ErrorMsg *exec_add_error_node(CodeGen *codegen, IrExecutable *exec, AstNode *source_node, Buf *msg);
static IrInstruction *ir_analyze_container_field_ptr(IrAnalyze *ira, Buf *field_name,
IrInstruction *source_instr, IrInstruction *container_ptr, ZigType *container_type);
IrInstruction *source_instr, IrInstruction *container_ptr, ZigType *container_type, bool initializing);
static IrInstruction *ir_get_var_ptr(IrAnalyze *ira, IrInstruction *instruction, ZigVar *var);
static ZigType *ir_resolve_atomic_operand_type(IrAnalyze *ira, IrInstruction *op);
static IrInstruction *ir_lval_wrap(IrBuilder *irb, Scope *scope, IrInstruction *value, LVal lval, ResultLoc *result_loc);
@ -616,10 +616,6 @@ static constexpr IrInstructionId ir_instruction_id(IrInstructionRef *) {
return IrInstructionIdRef;
}
static constexpr IrInstructionId ir_instruction_id(IrInstructionUnionInit *) {
return IrInstructionIdUnionInit;
}
static constexpr IrInstructionId ir_instruction_id(IrInstructionCompileErr *) {
return IrInstructionIdCompileErr;
}
@ -1312,12 +1308,13 @@ static IrInstruction *ir_build_field_ptr_instruction(IrBuilder *irb, Scope *scop
}
static IrInstruction *ir_build_field_ptr(IrBuilder *irb, Scope *scope, AstNode *source_node,
IrInstruction *container_ptr, Buf *field_name)
IrInstruction *container_ptr, Buf *field_name, bool initializing)
{
IrInstructionFieldPtr *instruction = ir_build_instruction<IrInstructionFieldPtr>(irb, scope, source_node);
instruction->container_ptr = container_ptr;
instruction->field_name_buffer = field_name;
instruction->field_name_expr = nullptr;
instruction->initializing = initializing;
ir_ref_instruction(container_ptr, irb->current_basic_block);
@ -1337,9 +1334,10 @@ static IrInstruction *ir_build_struct_field_ptr(IrBuilder *irb, Scope *scope, As
}
static IrInstruction *ir_build_union_field_ptr(IrBuilder *irb, Scope *scope, AstNode *source_node,
IrInstruction *union_ptr, TypeUnionField *field)
IrInstruction *union_ptr, TypeUnionField *field, bool initializing)
{
IrInstructionUnionFieldPtr *instruction = ir_build_instruction<IrInstructionUnionFieldPtr>(irb, scope, source_node);
instruction->initializing = initializing;
instruction->union_ptr = union_ptr;
instruction->field = field;
@ -1517,19 +1515,6 @@ static IrInstruction *ir_build_container_init_fields(IrBuilder *irb, Scope *scop
return &container_init_fields_instruction->base;
}
static IrInstruction *ir_build_union_init(IrBuilder *irb, Scope *scope, AstNode *source_node,
ZigType *union_type, TypeUnionField *field, IrInstruction *init_value)
{
IrInstructionUnionInit *union_init_instruction = ir_build_instruction<IrInstructionUnionInit>(irb, scope, source_node);
union_init_instruction->union_type = union_type;
union_init_instruction->field = field;
union_init_instruction->init_value = init_value;
ir_ref_instruction(init_value, irb->current_basic_block);
return &union_init_instruction->base;
}
static IrInstruction *ir_build_unreachable(IrBuilder *irb, Scope *scope, AstNode *source_node) {
IrInstructionUnreachable *unreachable_instruction =
ir_build_instruction<IrInstructionUnreachable>(irb, scope, source_node);
@ -4121,7 +4106,7 @@ static IrInstruction *ir_gen_field_access(IrBuilder *irb, Scope *scope, AstNode
if (container_ref_instruction == irb->codegen->invalid_instruction)
return container_ref_instruction;
return ir_build_field_ptr(irb, scope, node, container_ref_instruction, field_name);
return ir_build_field_ptr(irb, scope, node, container_ref_instruction, field_name, false);
}
static IrInstruction *ir_gen_overflow_op(IrBuilder *irb, Scope *scope, AstNode *node, IrOverflowOp op) {
@ -5594,7 +5579,7 @@ static IrInstruction *ir_gen_container_init_expr(IrBuilder *irb, Scope *scope, A
AstNode *expr_node = entry_node->data.struct_val_field.expr;
IrInstruction *field_ptr = ir_build_field_ptr(irb, &result_loc->scope_elide->base, expr_node,
container_ptr, name);
container_ptr, name, true);
ResultLocInstruction *result_loc_inst = allocate<ResultLocInstruction>(1);
result_loc_inst->base.id = ResultLocIdInstruction;
result_loc_inst->base.source_instruction = field_ptr;
@ -6105,7 +6090,7 @@ static IrInstruction *ir_gen_for_expr(IrBuilder *irb, Scope *parent_scope, AstNo
IrBasicBlock *continue_block = ir_create_basic_block(irb, parent_scope, "ForContinue");
Buf *len_field_name = buf_create_from_str("len");
IrInstruction *len_ref = ir_build_field_ptr(irb, parent_scope, node, array_val_ptr, len_field_name);
IrInstruction *len_ref = ir_build_field_ptr(irb, parent_scope, node, array_val_ptr, len_field_name, false);
IrInstruction *len_val = ir_build_load_ptr(irb, parent_scope, node, len_ref);
ir_build_br(irb, parent_scope, node, cond_block, is_comptime);
@ -7496,7 +7481,7 @@ static IrInstruction *ir_gen_cancel_target(IrBuilder *irb, Scope *scope, AstNode
IrInstruction *coro_promise_ptr = ir_build_coro_promise(irb, scope, node, casted_target_inst);
Buf *atomic_state_field_name = buf_create_from_str(ATOMIC_STATE_FIELD_NAME);
IrInstruction *atomic_state_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr,
atomic_state_field_name);
atomic_state_field_name, false);
// set the is_canceled bit
IrInstruction *prev_atomic_value = ir_build_atomic_rmw(irb, scope, node,
@ -7575,7 +7560,7 @@ static IrInstruction *ir_gen_resume_target(IrBuilder *irb, Scope *scope, AstNode
IrInstruction *coro_promise_ptr = ir_build_coro_promise(irb, scope, node, casted_target_inst);
Buf *atomic_state_field_name = buf_create_from_str(ATOMIC_STATE_FIELD_NAME);
IrInstruction *atomic_state_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr,
atomic_state_field_name);
atomic_state_field_name, false);
// clear the is_suspended bit
IrInstruction *prev_atomic_value = ir_build_atomic_rmw(irb, scope, node,
@ -7642,12 +7627,12 @@ static IrInstruction *ir_gen_await_expr(IrBuilder *irb, Scope *scope, AstNode *n
IrInstruction *coro_promise_ptr = ir_build_coro_promise(irb, scope, node, target_inst);
Buf *result_ptr_field_name = buf_create_from_str(RESULT_PTR_FIELD_NAME);
IrInstruction *result_ptr_field_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, result_ptr_field_name);
IrInstruction *result_ptr_field_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, result_ptr_field_name, false);
if (irb->codegen->have_err_ret_tracing) {
IrInstruction *err_ret_trace_ptr = ir_build_error_return_trace(irb, scope, node, IrInstructionErrorReturnTrace::NonNull);
Buf *err_ret_trace_ptr_field_name = buf_create_from_str(ERR_RET_TRACE_PTR_FIELD_NAME);
IrInstruction *err_ret_trace_ptr_field_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, err_ret_trace_ptr_field_name);
IrInstruction *err_ret_trace_ptr_field_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, err_ret_trace_ptr_field_name, false);
ir_build_store_ptr(irb, scope, node, err_ret_trace_ptr_field_ptr, err_ret_trace_ptr);
}
@ -7669,7 +7654,7 @@ static IrInstruction *ir_gen_await_expr(IrBuilder *irb, Scope *scope, AstNode *n
Buf *atomic_state_field_name = buf_create_from_str(ATOMIC_STATE_FIELD_NAME);
IrInstruction *atomic_state_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr,
atomic_state_field_name);
atomic_state_field_name, false);
IrInstruction *promise_type_val = ir_build_const_type(irb, scope, node, irb->codegen->builtin_types.entry_promise);
IrInstruction *const_bool_false = ir_build_const_bool(irb, scope, node, false);
@ -7723,12 +7708,12 @@ static IrInstruction *ir_gen_await_expr(IrBuilder *irb, Scope *scope, AstNode *n
ir_set_cursor_at_end_and_append_block(irb, no_suspend_block);
if (irb->codegen->have_err_ret_tracing) {
Buf *err_ret_trace_field_name = buf_create_from_str(ERR_RET_TRACE_FIELD_NAME);
IrInstruction *src_err_ret_trace_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, err_ret_trace_field_name);
IrInstruction *src_err_ret_trace_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, err_ret_trace_field_name, false);
IrInstruction *dest_err_ret_trace_ptr = ir_build_error_return_trace(irb, scope, node, IrInstructionErrorReturnTrace::NonNull);
ir_build_merge_err_ret_traces(irb, scope, node, coro_promise_ptr, src_err_ret_trace_ptr, dest_err_ret_trace_ptr);
}
Buf *result_field_name = buf_create_from_str(RESULT_FIELD_NAME);
IrInstruction *promise_result_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, result_field_name);
IrInstruction *promise_result_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, result_field_name, false);
// If the type of the result handle_is_ptr then this does not actually perform a load. But we need it to,
// because we're about to destroy the memory. So we store it into our result variable.
IrInstruction *no_suspend_result = ir_build_load_ptr(irb, scope, node, promise_result_ptr);
@ -8152,7 +8137,7 @@ bool ir_gen(CodeGen *codegen, AstNode *node, Scope *scope, IrExecutable *ir_exec
build_decl_var_and_init(irb, coro_scope, node, irb->exec->coro_allocator_var, implicit_allocator_ptr,
"allocator", const_bool_false);
Buf *realloc_field_name = buf_create_from_str(ASYNC_REALLOC_FIELD_NAME);
IrInstruction *realloc_fn_ptr = ir_build_field_ptr(irb, coro_scope, node, implicit_allocator_ptr, realloc_field_name);
IrInstruction *realloc_fn_ptr = ir_build_field_ptr(irb, coro_scope, node, implicit_allocator_ptr, realloc_field_name, false);
IrInstruction *realloc_fn = ir_build_load_ptr(irb, coro_scope, node, realloc_fn_ptr);
IrInstruction *maybe_coro_mem_ptr = ir_build_coro_alloc_helper(irb, coro_scope, node, realloc_fn, coro_size);
IrInstruction *alloc_result_is_ok = ir_build_test_nonnull(irb, coro_scope, node, maybe_coro_mem_ptr);
@ -8172,30 +8157,30 @@ bool ir_gen(CodeGen *codegen, AstNode *node, Scope *scope, IrExecutable *ir_exec
Buf *atomic_state_field_name = buf_create_from_str(ATOMIC_STATE_FIELD_NAME);
irb->exec->atomic_state_field_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr,
atomic_state_field_name);
atomic_state_field_name, false);
IrInstruction *zero = ir_build_const_usize(irb, scope, node, 0);
ir_build_store_ptr(irb, scope, node, irb->exec->atomic_state_field_ptr, zero);
Buf *result_field_name = buf_create_from_str(RESULT_FIELD_NAME);
irb->exec->coro_result_field_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, result_field_name);
irb->exec->coro_result_field_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, result_field_name, false);
result_ptr_field_name = buf_create_from_str(RESULT_PTR_FIELD_NAME);
irb->exec->coro_result_ptr_field_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, result_ptr_field_name);
irb->exec->coro_result_ptr_field_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, result_ptr_field_name, false);
ir_build_store_ptr(irb, scope, node, irb->exec->coro_result_ptr_field_ptr, irb->exec->coro_result_field_ptr);
if (irb->codegen->have_err_ret_tracing) {
// initialize the error return trace
Buf *return_addresses_field_name = buf_create_from_str(RETURN_ADDRESSES_FIELD_NAME);
IrInstruction *return_addresses_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, return_addresses_field_name);
IrInstruction *return_addresses_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, return_addresses_field_name, false);
Buf *err_ret_trace_field_name = buf_create_from_str(ERR_RET_TRACE_FIELD_NAME);
err_ret_trace_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, err_ret_trace_field_name);
err_ret_trace_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, err_ret_trace_field_name, false);
ir_build_mark_err_ret_trace_ptr(irb, scope, node, err_ret_trace_ptr);
// coordinate with builtin.zig
Buf *index_name = buf_create_from_str("index");
IrInstruction *index_ptr = ir_build_field_ptr(irb, scope, node, err_ret_trace_ptr, index_name);
IrInstruction *index_ptr = ir_build_field_ptr(irb, scope, node, err_ret_trace_ptr, index_name, false);
ir_build_store_ptr(irb, scope, node, index_ptr, zero);
Buf *instruction_addresses_name = buf_create_from_str("instruction_addresses");
IrInstruction *addrs_slice_ptr = ir_build_field_ptr(irb, scope, node, err_ret_trace_ptr, instruction_addresses_name);
IrInstruction *addrs_slice_ptr = ir_build_field_ptr(irb, scope, node, err_ret_trace_ptr, instruction_addresses_name, false);
IrInstruction *slice_value = ir_build_slice(irb, scope, node, return_addresses_ptr, zero, nullptr, false);
ir_build_store_ptr(irb, scope, node, addrs_slice_ptr, slice_value);
@ -8256,7 +8241,7 @@ bool ir_gen(CodeGen *codegen, AstNode *node, Scope *scope, IrExecutable *ir_exec
}
if (irb->codegen->have_err_ret_tracing) {
Buf *err_ret_trace_ptr_field_name = buf_create_from_str(ERR_RET_TRACE_PTR_FIELD_NAME);
IrInstruction *err_ret_trace_ptr_field_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, err_ret_trace_ptr_field_name);
IrInstruction *err_ret_trace_ptr_field_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, err_ret_trace_ptr_field_name, false);
IrInstruction *dest_err_ret_trace_ptr = ir_build_load_ptr(irb, scope, node, err_ret_trace_ptr_field_ptr);
ir_build_merge_err_ret_traces(irb, scope, node, coro_promise_ptr, err_ret_trace_ptr, dest_err_ret_trace_ptr);
}
@ -8291,7 +8276,7 @@ bool ir_gen(CodeGen *codegen, AstNode *node, Scope *scope, IrExecutable *ir_exec
Buf *shrink_field_name = buf_create_from_str(ASYNC_SHRINK_FIELD_NAME);
IrInstruction *implicit_allocator_ptr = ir_build_get_implicit_allocator(irb, scope, node,
ImplicitAllocatorIdLocalVar);
IrInstruction *shrink_fn_ptr = ir_build_field_ptr(irb, scope, node, implicit_allocator_ptr, shrink_field_name);
IrInstruction *shrink_fn_ptr = ir_build_field_ptr(irb, scope, node, implicit_allocator_ptr, shrink_field_name, false);
IrInstruction *shrink_fn = ir_build_load_ptr(irb, scope, node, shrink_fn_ptr);
IrInstruction *zero = ir_build_const_usize(irb, scope, node, 0);
IrInstruction *coro_mem_ptr_maybe = ir_build_coro_free(irb, scope, node, coro_id, irb->exec->coro_handle);
@ -14722,7 +14707,7 @@ static IrInstruction *ir_analyze_async_call(IrAnalyze *ira, IrInstructionCallSrc
ir_assert(async_allocator_inst->value.type->id == ZigTypeIdPointer, &call_instruction->base);
ZigType *container_type = async_allocator_inst->value.type->data.pointer.child_type;
IrInstruction *field_ptr_inst = ir_analyze_container_field_ptr(ira, realloc_field_name, &call_instruction->base,
async_allocator_inst, container_type);
async_allocator_inst, container_type, false);
if (type_is_invalid(field_ptr_inst->value.type)) {
return ira->codegen->invalid_instruction;
}
@ -16580,7 +16565,7 @@ static IrInstruction *ir_analyze_container_member_access_inner(IrAnalyze *ira,
}
static IrInstruction *ir_analyze_container_field_ptr(IrAnalyze *ira, Buf *field_name,
IrInstruction *source_instr, IrInstruction *container_ptr, ZigType *container_type)
IrInstruction *source_instr, IrInstruction *container_ptr, ZigType *container_type, bool initializing)
{
Error err;
@ -16664,15 +16649,19 @@ static IrInstruction *ir_analyze_container_field_ptr(IrAnalyze *ira, Buf *field_
if (type_is_invalid(union_val->type))
return ira->codegen->invalid_instruction;
TypeUnionField *actual_field = find_union_field_by_tag(bare_type, &union_val->data.x_union.tag);
if (actual_field == nullptr)
zig_unreachable();
if (initializing) {
bigint_init_bigint(&union_val->data.x_union.tag, &field->enum_field->value);
} else {
TypeUnionField *actual_field = find_union_field_by_tag(bare_type, &union_val->data.x_union.tag);
if (actual_field == nullptr)
zig_unreachable();
if (field != actual_field) {
ir_add_error_node(ira, source_instr->source_node,
buf_sprintf("accessing union field '%s' while field '%s' is set", buf_ptr(field_name),
buf_ptr(actual_field->name)));
return ira->codegen->invalid_instruction;
if (field != actual_field) {
ir_add_error_node(ira, source_instr->source_node,
buf_sprintf("accessing union field '%s' while field '%s' is set", buf_ptr(field_name),
buf_ptr(actual_field->name)));
return ira->codegen->invalid_instruction;
}
}
ConstExprValue *payload_val = union_val->data.x_union.payload;
@ -16690,7 +16679,8 @@ static IrInstruction *ir_analyze_container_field_ptr(IrAnalyze *ira, Buf *field_
}
}
IrInstruction *result = ir_build_union_field_ptr(&ira->new_irb, source_instr->scope, source_instr->source_node, container_ptr, field);
IrInstruction *result = ir_build_union_field_ptr(&ira->new_irb, source_instr->scope,
source_instr->source_node, container_ptr, field, initializing);
result->value.type = get_pointer_to_type_extra(ira->codegen, field->type_entry, is_const, is_volatile,
PtrLenSingle, 0, 0, 0, false);
return result;
@ -16826,10 +16816,10 @@ static IrInstruction *ir_analyze_instruction_field_ptr(IrAnalyze *ira, IrInstruc
if (container_type->id == ZigTypeIdPointer) {
ZigType *bare_type = container_ref_type(container_type);
IrInstruction *container_child = ir_get_deref(ira, &field_ptr_instruction->base, container_ptr);
IrInstruction *result = ir_analyze_container_field_ptr(ira, field_name, &field_ptr_instruction->base, container_child, bare_type);
IrInstruction *result = ir_analyze_container_field_ptr(ira, field_name, &field_ptr_instruction->base, container_child, bare_type, field_ptr_instruction->initializing);
return result;
} else {
IrInstruction *result = ir_analyze_container_field_ptr(ira, field_name, &field_ptr_instruction->base, container_ptr, container_type);
IrInstruction *result = ir_analyze_container_field_ptr(ira, field_name, &field_ptr_instruction->base, container_ptr, container_type, field_ptr_instruction->initializing);
return result;
}
} else if (is_array_ref(container_type)) {
@ -18120,7 +18110,7 @@ static IrInstruction *ir_analyze_instruction_switch_var(IrAnalyze *ira, IrInstru
}
IrInstruction *result = ir_build_union_field_ptr(&ira->new_irb,
instruction->base.scope, instruction->base.source_node, target_value_ptr, field);
instruction->base.scope, instruction->base.source_node, target_value_ptr, field, false);
result->value.type = get_pointer_to_type(ira->codegen, field->type_entry,
target_value_ptr->value.type->data.pointer.is_const);
return result;
@ -18386,11 +18376,10 @@ static IrInstruction *ir_analyze_container_init_fields_union(IrAnalyze *ira, IrI
return result;
}
IrInstruction *new_instruction = ir_build_union_init(&ira->new_irb,
instruction->scope, instruction->source_node,
container_type, type_field, casted_field_value);
new_instruction->value.type = container_type;
ir_add_alloca(ira, new_instruction, container_type);
// this instruction should not get to codegen
IrInstruction *new_instruction = ir_const(ira, instruction, container_type);
// this is how we signal to EndExpr the value is not comptime known
new_instruction->value.special = ConstValSpecialRuntime;
return new_instruction;
}
@ -23907,7 +23896,6 @@ static IrInstruction *ir_analyze_instruction_base(IrAnalyze *ira, IrInstruction
switch (instruction->id) {
case IrInstructionIdInvalid:
case IrInstructionIdWidenOrShorten:
case IrInstructionIdUnionInit:
case IrInstructionIdStructFieldPtr:
case IrInstructionIdUnionFieldPtr:
case IrInstructionIdOptionalWrap:
@ -24353,7 +24341,6 @@ bool ir_has_side_effects(IrInstruction *instruction) {
case IrInstructionIdCast:
case IrInstructionIdContainerInitList:
case IrInstructionIdContainerInitFields:
case IrInstructionIdUnionInit:
case IrInstructionIdFieldPtr:
case IrInstructionIdElemPtr:
case IrInstructionIdVarPtr:

12
src/ir_print.cpp
View File

@ -360,15 +360,6 @@ static void ir_print_container_init_fields(IrPrint *irp, IrInstructionContainerI
fprintf(irp->f, "} // container init");
}
static void ir_print_union_init(IrPrint *irp, IrInstructionUnionInit *instruction) {
Buf *field_name = instruction->field->enum_field->name;
fprintf(irp->f, "%s {", buf_ptr(&instruction->union_type->name));
fprintf(irp->f, ".%s = ", buf_ptr(field_name));
ir_print_other_instruction(irp, instruction->init_value);
fprintf(irp->f, "} // union init");
}
static void ir_print_unreachable(IrPrint *irp, IrInstructionUnreachable *instruction) {
fprintf(irp->f, "unreachable");
}
@ -1590,9 +1581,6 @@ static void ir_print_instruction(IrPrint *irp, IrInstruction *instruction) {
case IrInstructionIdContainerInitFields:
ir_print_container_init_fields(irp, (IrInstructionContainerInitFields *)instruction);
break;
case IrInstructionIdUnionInit:
ir_print_union_init(irp, (IrInstructionUnionInit *)instruction);
break;
case IrInstructionIdUnreachable:
ir_print_unreachable(irp, (IrInstructionUnreachable *)instruction);
break;