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[spv-out]: Abstract out null constant creation.

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This commit is contained in:
Jim Blandy
2021-06-07 15:14:49 -07:00
committed by Dzmitry Malyshau
parent ac92f09a48
commit 9146942412
1 changed files with 8 additions and 4 deletions
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12
src/back/spv/writer.rs
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@@ -1085,6 +1085,13 @@ impl Writer {
Ok(())
}
fn write_constant_null(&mut self, type_id: Word) -> Word {
let null_id = self.id_gen.next();
Instruction::constant_null(type_id, null_id)
.to_words(&mut self.logical_layout.declarations);
null_id
}
fn write_varying(
&mut self,
ir_module: &crate::Module,
@@ -2788,11 +2795,8 @@ impl Writer {
// Or it may be the end of the function.
None => match ir_function.result {
Some(ref result) if function.entry_point_context.is_none() => {
// create a Null and return it
let null_id = self.id_gen.next();
let type_id = self.get_type_id(LookupType::Handle(result.ty))?;
Instruction::constant_null(type_id, null_id)
.to_words(&mut self.logical_layout.declarations);
let null_id = self.write_constant_null(type_id);
Instruction::return_value(null_id)
}
_ => Instruction::return_void(),