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stage2: C backend: fix ret AIR instruction

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when operand has 0 runtime bits
This commit is contained in:
Andrew Kelley 2021-07-20 15:56:42 -07:00
parent 9c652cc650
commit f47cf93b47
1 changed files with 8 additions and 4 deletions
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12
src/codegen/c.zig
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@ -1006,11 +1006,15 @@ fn airLoad(o: *Object, inst: Air.Inst.Index) !CValue {
fn airRet(o: *Object, inst: Air.Inst.Index) !CValue {
const un_op = o.air.instructions.items(.data)[inst].un_op;
const operand = try o.resolveInst(un_op);
const writer = o.writer();
try writer.writeAll("return ");
try o.writeCValue(writer, operand);
try writer.writeAll(";\n");
if (o.air.typeOf(un_op).hasCodeGenBits()) {
const operand = try o.resolveInst(un_op);
try writer.writeAll("return ");
try o.writeCValue(writer, operand);
try writer.writeAll(";\n");
} else {
try writer.writeAll("return;\n");
}
return CValue.none;
}