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C backend: take advantage of Assignment abstraction in airMemset

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This commit is contained in:
Andrew Kelley 2023-04-27 15:44:22 -07:00
parent 42973d73e6
commit cb9e8b0d01
1 changed files with 12 additions and 20 deletions
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32
src/codegen/c.zig
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@ -6335,26 +6335,18 @@ fn airMemset(f: *Function, inst: Air.Inst.Index, safety: bool) !CValue {
try writer.writeAll("; ++");
try f.writeCValue(writer, index, .Other);
try writer.writeAll(") ");
if (lowersToArray(elem_ty, target)) {
// Arrays are not assignable, so we use memcpy here.
try writer.writeAll("memcpy(");
try writeSliceOrPtr(f, writer, dest_slice, dest_ty);
try writer.writeAll("[");
try f.writeCValue(writer, index, .Other);
try writer.writeAll("], ");
try f.writeCValue(writer, value, .FunctionArgument);
try writer.print(", {d});\n", .{elem_abi_size});
} else {
try writer.writeAll("((");
try f.renderType(writer, elem_ptr_ty);
try writer.writeByte(')');
try writeSliceOrPtr(f, writer, dest_slice, dest_ty);
try writer.writeAll(")[");
try f.writeCValue(writer, index, .Other);
try writer.writeAll("] = ");
try f.writeCValue(writer, value, .FunctionArgument);
try writer.writeAll(";\n");
}
const a = try Assignment.start(f, writer, elem_ty);
try writer.writeAll("((");
try f.renderType(writer, elem_ptr_ty);
try writer.writeByte(')');
try writeSliceOrPtr(f, writer, dest_slice, dest_ty);
try writer.writeAll(")[");
try f.writeCValue(writer, index, .Other);
try writer.writeByte(']');
try a.assign(f, writer);
try f.writeCValue(writer, value, .Other);
try a.end(f, writer);
try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs });
try freeLocal(f, inst, index.new_local, 0);