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fix regression of storing optional with 0-bit payload

master
Andrew Kelley 2020-01-28 12:32:39 -05:00
parent 5c55a9b4e8
commit e0000c47bd
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GPG Key ID: 7C5F548F728501A9
2 changed files with 8 additions and 2 deletions
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4
src/codegen.cpp
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@ -4731,6 +4731,10 @@ static LLVMValueRef ir_render_optional_unwrap_ptr(CodeGen *g, IrExecutableGen *e
LLVMPositionBuilderAtEnd(g->builder, ok_block);
}
if (!type_has_bits(child_type)) {
if (instruction->initializing) {
LLVMValueRef non_null_bit = LLVMConstInt(LLVMInt1Type(), 1, false);
gen_store_untyped(g, non_null_bit, base_ptr, 0, false);
}
return nullptr;
} else {
bool is_scalar = !handle_is_ptr(maybe_type);

6
src/ir.cpp
View File

@ -10402,6 +10402,7 @@ static Error ir_exec_scan_for_side_effects(CodeGen *codegen, IrExecutableGen *ex
if (instr_is_comptime(instruction)) {
switch (instruction->id) {
case IrInstGenIdUnwrapErrPayload:
case IrInstGenIdOptionalUnwrapPtr:
case IrInstGenIdUnionFieldPtr:
continue;
default:
@ -18671,7 +18672,7 @@ static IrInstGen *ir_resolve_result(IrAnalyze *ira, IrInst *suspend_source_instr
{
bool same_comptime_repr = types_have_same_zig_comptime_repr(ira->codegen, actual_elem_type, value_type);
if (!same_comptime_repr) {
result_loc_pass1->written = false;
result_loc_pass1->written = was_written;
return ir_analyze_unwrap_optional_payload(ira, suspend_source_instr, result_loc, false, true);
}
} else if (actual_elem_type->id == ZigTypeIdErrorUnion && value_type->id != ZigTypeIdErrorUnion) {
@ -29971,7 +29972,6 @@ bool ir_inst_gen_has_side_effects(IrInstGen *instruction) {
case IrInstGenIdReturnPtr:
case IrInstGenIdStructFieldPtr:
case IrInstGenIdTestNonNull:
case IrInstGenIdOptionalUnwrapPtr:
case IrInstGenIdClz:
case IrInstGenIdCtz:
case IrInstGenIdPopCount:
@ -30028,6 +30028,8 @@ bool ir_inst_gen_has_side_effects(IrInstGen *instruction) {
return reinterpret_cast<IrInstGenUnwrapErrCode *>(instruction)->initializing;
case IrInstGenIdUnionFieldPtr:
return reinterpret_cast<IrInstGenUnionFieldPtr *>(instruction)->initializing;
case IrInstGenIdOptionalUnwrapPtr:
return reinterpret_cast<IrInstGenOptionalUnwrapPtr *>(instruction)->initializing;
case IrInstGenIdErrWrapPayload:
return reinterpret_cast<IrInstGenErrWrapPayload *>(instruction)->result_loc != nullptr;
case IrInstGenIdErrWrapCode: