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cbe: elide block result allocation for 0-bit types

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This logic already existed for the void type, but is also necessary for
other 0-bit types. Without it, we try to alloc a local for a 0-bit type
which gets translated to a local of type `void` which C doesn't like.
This commit is contained in:
mlugg 2023-08-19 02:35:00 +01:00 committed by Andrew Kelley
parent 51f6438e07
commit 7a85ad151d
1 changed files with 1 additions and 1 deletions
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src/codegen/c.zig
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@ -4285,7 +4285,7 @@ fn airBlock(f: *Function, inst: Air.Inst.Index) !CValue {
const writer = f.object.writer();
const inst_ty = f.typeOfIndex(inst);
const result = if (inst_ty.ip_index != .void_type and !f.liveness.isUnused(inst))
const result = if (inst_ty.hasRuntimeBitsIgnoreComptime(mod) and !f.liveness.isUnused(inst))
try f.allocLocal(inst, inst_ty)
else
.none;