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cbe: cast pointer switch target to int

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This commit is contained in:
Veikka Tuominen 2022-11-27 17:16:01 +02:00
parent 8af5648015
commit 6310186d52
2 changed files with 10 additions and 2 deletions
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11
src/codegen/c.zig
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@ -3894,10 +3894,14 @@ fn airSwitchBr(f: *Function, inst: Air.Inst.Index) !CValue {
const writer = f.object.writer();
try writer.writeAll("switch (");
if (condition_ty.tag() == .bool) {
if (condition_ty.zigTypeTag() == .Bool) {
try writer.writeByte('(');
try f.renderTypecast(writer, Type.u1);
try writer.writeByte(')');
} else if (condition_ty.isPtrAtRuntime()) {
try writer.writeByte('(');
try f.renderTypecast(writer, Type.usize);
try writer.writeByte(')');
}
try f.writeCValue(writer, condition, .Other);
try writer.writeAll(") {");
@ -3914,6 +3918,11 @@ fn airSwitchBr(f: *Function, inst: Air.Inst.Index) !CValue {
for (items) |item| {
try f.object.indent_writer.insertNewline();
try writer.writeAll("case ");
if (condition_ty.isPtrAtRuntime()) {
try writer.writeByte('(');
try f.renderTypecast(writer, Type.usize);
try writer.writeByte(')');
}
try f.object.dg.renderValue(writer, condition_ty, f.air.value(item).?, .Other);
try writer.writeAll(": ");
}

1
test/behavior/switch.zig
View File

@ -548,7 +548,6 @@ test "switch prongs with cases with identical payload types" {
}
test "switch on pointer type" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO