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spirv: air unwrap_errunion_payload

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Robin Voetter 2023-09-19 20:26:22 +02:00 committed by Andrew Kelley
parent 48ab11639a
commit 4f215a6d28
1 changed files with 16 additions and 0 deletions
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16
src/codegen/spirv.zig
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@ -1732,6 +1732,7 @@ pub const DeclGen = struct {
.unreach, .trap => return self.airUnreach(),
.unwrap_errunion_err => try self.airErrUnionErr(inst),
.unwrap_errunion_payload => try self.airErrUnionPayload(inst),
.wrap_errunion_err => try self.airWrapErrUnionErr(inst),
.is_null => try self.airIsNull(inst, .is_null),
@ -3185,6 +3186,21 @@ pub const DeclGen = struct {
return try self.extractField(Type.anyerror, operand_id, eu_layout.errorFieldIndex());
}
fn airErrUnionPayload(self: *DeclGen, inst: Air.Inst.Index) !?IdRef {
if (self.liveness.isUnused(inst)) return null;
const ty_op = self.air.instructions.items(.data)[inst].ty_op;
const operand_id = try self.resolve(ty_op.operand);
const payload_ty = self.typeOfIndex(inst);
const eu_layout = self.errorUnionLayout(payload_ty);
if (!eu_layout.payload_has_bits) {
return null; // No error possible.
}
return try self.extractField(payload_ty, operand_id, eu_layout.payloadFieldIndex());
}
fn airWrapErrUnionErr(self: *DeclGen, inst: Air.Inst.Index) !?IdRef {
if (self.liveness.isUnused(inst)) return null;