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memcpy and memset builtins support volatile pointers

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See #238
This commit is contained in:
Andrew Kelley
2017-02-04 22:12:06 -05:00
parent 419e75eb23
commit b840184bb0
4 changed files with 34 additions and 13 deletions
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19
src/ir.cpp
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@@ -11193,9 +11193,13 @@ static TypeTableEntry *ir_analyze_instruction_memset(IrAnalyze *ira, IrInstructi
if (count_value->value.type->id == TypeTableEntryIdInvalid)
return ira->codegen->builtin_types.entry_invalid;
TypeTableEntry *dest_uncasted_type = get_underlying_type(dest_ptr->value.type);
bool dest_is_volatile = (dest_uncasted_type->id == TypeTableEntryIdPointer) &&
dest_uncasted_type->data.pointer.is_volatile;
TypeTableEntry *usize = ira->codegen->builtin_types.entry_usize;
TypeTableEntry *u8 = ira->codegen->builtin_types.entry_u8;
TypeTableEntry *u8_ptr = get_pointer_to_type(ira->codegen, u8, false);
TypeTableEntry *u8_ptr = get_pointer_to_type_volatile(ira->codegen, u8, false, dest_is_volatile);
IrInstruction *casted_dest_ptr = ir_implicit_cast(ira, dest_ptr, u8_ptr);
if (casted_dest_ptr->value.type->id == TypeTableEntryIdInvalid)
@@ -11262,10 +11266,17 @@ static TypeTableEntry *ir_analyze_instruction_memcpy(IrAnalyze *ira, IrInstructi
if (count_value->value.type->id == TypeTableEntryIdInvalid)
return ira->codegen->builtin_types.entry_invalid;
TypeTableEntry *dest_uncasted_type = get_underlying_type(dest_ptr->value.type);
TypeTableEntry *src_uncasted_type = get_underlying_type(src_ptr->value.type);
bool dest_is_volatile = (dest_uncasted_type->id == TypeTableEntryIdPointer) &&
dest_uncasted_type->data.pointer.is_volatile;
bool src_is_volatile = (src_uncasted_type->id == TypeTableEntryIdPointer) &&
src_uncasted_type->data.pointer.is_volatile;
TypeTableEntry *usize = ira->codegen->builtin_types.entry_usize;
TypeTableEntry *u8 = ira->codegen->builtin_types.entry_u8;
TypeTableEntry *u8_ptr_mut = get_pointer_to_type(ira->codegen, u8, false);
TypeTableEntry *u8_ptr_const = get_pointer_to_type(ira->codegen, u8, true);
TypeTableEntry *u8_ptr_mut = get_pointer_to_type_volatile(ira->codegen, u8, false, dest_is_volatile);
TypeTableEntry *u8_ptr_const = get_pointer_to_type_volatile(ira->codegen, u8, true, src_is_volatile);
IrInstruction *casted_dest_ptr = ir_implicit_cast(ira, dest_ptr, u8_ptr_mut);
if (casted_dest_ptr->value.type->id == TypeTableEntryIdInvalid)
@@ -11888,7 +11899,7 @@ static TypeTableEntry *ir_analyze_instruction_can_implicit_cast(IrAnalyze *ira,
if (result == ImplicitCastMatchResultReportedError) {
zig_panic("TODO refactor implicit cast tester to return bool without reporting errors");
}
// TODO in order to known depends_on_compile_var we have to known if the type of the target
// depends on a compile var
bool depends_on_compile_var = true;