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wcc/ww: cgtryprop/cgtryunw gain the nullable arm

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Try-propagation on a nullable value fell to the tagged path and
compared the pointer to a tag — the null check came out inverted.
Mirror ww's own cgtypetest nullable fold (cgenexpr.ww:652) and the
cstage twin (cgen.c:10366/10504). Review item #15.
This commit is contained in:
Hojun-Cho
2026-06-12 19:19:26 +09:00
parent 87367ae332
commit 6f3c896fea
5 changed files with 346 additions and 0 deletions
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7
Makefile
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@@ -320,6 +320,7 @@ TESTS = $(BIN)/test_smoke $(BIN)/test_lex $(BIN)/test_parse $(BIN)/test_check \
$(BIN)/test_tagged_call_arg \
$(BIN)/test_tagged_call_arg_run \
$(BIN)/test_tryprop_tag_remap_run \
$(BIN)/test_nullable_try_run \
$(BIN)/test_nested_union_widen_run \
$(BIN)/test_sret_struct_return \
$(BIN)/test_sret_struct_return_run \
@@ -1764,6 +1765,12 @@ $(BIN)/test_nested_union_widen_run: test/wcc/925_nested_union_widen_run.c \
$(LIB)/libwwrt.a | $(BIN)
$(CC) $(CFLAGS) -o $@ $<
$(BIN)/test_nullable_try_run: test/wcc/949_nullable_try_run.c \
$(BIN)/ww $(BIN)/w6c $(BIN)/w6a $(BIN)/w6l \
$(BIN)/ww_ww $(BIN)/w6c_ww $(BIN)/w6a_ww $(BIN)/w6l_ww \
$(LIB)/libwwrt.a | $(BIN)
$(CC) $(CFLAGS) -o $@ $<
$(BIN)/test_sret_struct_return: test/wcc/721_sret_struct_return.c \
$(BIN)/w6c $(BIN)/w6c_ww | $(BIN)
$(CC) $(CFLAGS) -o $@ $<