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cbe: avoid emitting code for zero-bit field access

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This commit is contained in:
Jacob Young 2022-11-01 02:28:55 -04:00
parent fb8c08d4ac
commit 8e52be1602
1 changed files with 3 additions and 1 deletions
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4
src/codegen/c.zig
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@ -4223,9 +4223,11 @@ fn airStructFieldVal(f: *Function, inst: Air.Inst.Index) !CValue {
if (f.liveness.isUnused(inst))
return CValue.none;
const inst_ty = f.air.typeOfIndex(inst);
if (!inst_ty.hasRuntimeBitsIgnoreComptime()) return CValue.none;
const ty_pl = f.air.instructions.items(.data)[inst].ty_pl;
const extra = f.air.extraData(Air.StructField, ty_pl.payload).data;
const inst_ty = f.air.typeOfIndex(inst);
const target = f.object.dg.module.getTarget();
const struct_byval = try f.resolveInst(extra.struct_operand);
const struct_ty = f.air.typeOf(extra.struct_operand);